MoTeC Interpreter User's Manual
Contents
1. Interpreter User s Manual Introductlori eie Het oeste conten da id kae sassa iva 1 esu E 1 Additional 1 7 lc 3 System Logging Options and 3 Software Summary 6 SoftWare NAVIGALION 6 eite e EVE teer tm 7 Prititingzi oerte rhet tha Me am a er MCI ee 7 Acquiring Data u Au roga reos 8 Dash Logget 2 aqu us e OP na sI lasa 8 Engine Management System 800 880 8 Engine Management System 4 48 8 9 logging MODES 32 uo Ho eatur 9 EA ROAA TE I uu usss 10 Vehicle Details u ette ie RE MED ead 10 Ghanmel Setup ua EA E A A NR su 10 Ahalysis 13 Graphical Analysls gt u te AL 1 13 Track Map 17 Mixture IST 22 Mathematics uuu ei ceret odere shan eed ense oso qe Here 23 alm et 27 Statistic St nce cere tem utenti ies 29 Mirtual Dash s dnte mr rr RO E t ier 30 Pes2. 80 Throttle 944 Samples 70 Throttle 920 Samples 1018 Samples 50 Throttle 1114 Samples 40 Throttle 952 Samples 30 Throttle 866 Samples 20 Throttle 798 Samples 10 Throttle 838 Samples 3 2e 1000 2000 3000 4000 5000 6000 7000 8000 1000 2000 3000 4000 5000 6000 7000 8000 MoTeC Analysis Tools 23 Mathematics Allows for manipulation of data via a number of different functions The main Define Math Functions window is divided into three sections Default Math Current File Math and User Constants Default Math The Default Math functions are those that are applied to all files opened in Interpreter Any calculations that should be applied to all log files can be defined in this screen This includes things such as the Corrected Speed and Cumulative Distance calculations Current File Math Current File Math defines those calculations that are performed on the file that is currently open This is where functions are set up that refer specifically to the car as it was during the current logged session When closing Interpreter or opening another file Interpreter will ask if you wish to save changes to the current file If there have been additions or changes to the Current File Math then saying Yes will save these changes with the log data file User Constants The User Constants are fixed values that can be used in Expression Evaluator calculations of either Default Math or Current File Math Afte
3. Force can be measured in suspension components or in aerodynamic devices such as spoilers and air dams Force measurement is usually achieved using load cells or strain gauges The sensor should be calibrated to read positive for compression and negative for tension Speed The speed of the vehicle is very important as it is the prime input for calculating distance travelled creating track maps allowing comparative overlaying of different laps analysing handling etc As such it is critical that the sensor be solidly mounted shielded from extreme heat and remote from high currents and that the device it is sensing normally a toothed wheel on the back of the hub be rigidly mounted made from a magnetically soft material e g mild steel and have extremely accurate spacing between adjacent teeth MoTeC Analysis Tools 13 Analysis Tools Graphical Analysis Overview Graphical Analysis is a window depicting graphs of various parameters that were logged during the session stored in the current log file The graph options are defined in user templates to allow graphical views to be predefined and then selected as needed Graphs can be toggled between a series of line charts pictured and a single combined graph depending on user preferences Hotkey G A dialog box is also displayed that shows the value of each parameter at the point indicated by the cursor Data can be shown as the entire session entire lap or Zoomed to show
4. lap is also generated which predicts a theoretical fastest lap time based upon the quickest time in each lap section If the section markers are not in the correct place they can be changed by selecting the Modify Sections menu item from the Main menu MoTeC Analysis Tools 21 EM Lap Segments 98041702 LD Ken Douglas Phillip Island 17 04 1998 4 17pm X Main 3 841 4 681 4 856 22 Analysis Tools Mixture Map The mixture map function allows the user to analyze exhaust gas mixture strengths over a wide range of load and rpm to properly establish the optimum mixture strength for all operating conditions It does this by taking individual mixture readings and providing a trend averaging function with or without filtering for all load points The load sites are automatically calculated based on the minimum and maximum loads logged during that session For throttle based engines this is typically zero to 10096 of throttle position For pressure based engines ie turbo charged or super charged engines this tends to be minimum manifold pressure to maximum manifold pressure with ten equal graduations within that range The display can be as either separate graphs for each load point or a combined graph showing all load points and trend lines together This and other display options are selected under the Preferences item of the Main menu 100 Throttle 6450 Samples 90 Throttle 892 Samples
5. then Unload ECU menu items For the Windows MoTeC Interpreter program click on the Unload ECU Icon in the toolbar or use the same function from the Pull Down or Pop Up menus Note For M4 ECU s with a serial number of greater than 3000 running version 6 or above software a PCI cable is no longer needed to interface with a PC A standard serial comms cable can be used instead NU RO The PC can download a full 512kB data set from a MoTeC ECU in approximately two minutes Logging Modes The MoTeC ADL data logging system provides a range of techniques for recording information about the performance of an engine and chassis These logging modes are Normal Logging Fastest Lap logging and Burst Logging MoTeC ECU s have only Normal Logging and log whenever the engine is running Normal Logging Normal logging mode is the most common method for recording data and will satisfy the needs of the majority of users Normal logging begins recording data once the Start Logging condition is TRUE and continues logging until the Stop Logging condition becomes TRUE The Channels to be recorded are defined in the configuration of the ADL or ECU The number of samples per second for each channel is defined in the device configuration Fastest Lap Logging 4MB and 8MB Logging Option Only Fastest Lap Logging is similar to Normal Logging where the channels to be recorded and the number of samples per second is defined individu
6. a very small segment only Laps can be overlaid to compare performance between different drivers configurations or track conditions An inset track map Hotkey T will show the position on the track corresponding to the current cursor position with the currently viewed section highlighted 14 Analysis Tools MoTeC Graph Template 5 96100500 LD kd kd kn Bathurst 05 10 1996 3 00pm Main Zoom Cursor Help Motec mz WE Hur Abad 7 e ow Error Status v A Fe AM rv Wer que MAA ny Ww TT Bun e Vy Y Ground Speed 147 2 Status EE ECER EGEE Synced Lateral G Force 0 029 Longitudinal G Force 0 458 40 100 60 Lap 10 2 17 67 Graph Templates The format in which to display the log data is stored in a Graph template The template determines where and how many Channels are displayed the foreground and background colors used to present the channel and the graph size and vertical scale for the channel Thirty templates are available and can be configured for any purpose e g Engine G force Suspension etc The templates can be named and templates 1 9 may be selected via the numeric keys Only five templates are available in Basic Logging 1 RA Templates may be modified by pressing F5 or by Right clicking on either the Channel Label in the graph or the channel nam
7. down by more than 2 km h is and indication of poor sensor mounting or interference Similarly the Lateral G sensor should be reasonably smooth with readings close to zero when driving on straights MoTeC Analysis Tools 19 Reports Rainbow Map The Rainbow map is a representation of the value of a Channel at each point of alap The value of the Channel is displayed as a color gradient with a legend beside the chart indicating the corresponding Channel value The channel to be displayed can be selected from the list of logged channels An example of a set of rainbow maps is illustrated below ia MoTeC Rainbow Map 96100500 LD kn kd kd kn Bathurst 05 10 1996 3 00pm Main Print A a Ground Speed Throttle Position D Lambda 2 pere IM w w n Lambda 1 Battery Voltage J Longitudinal G Force I Mcd H m 2 j Lateral G Force Gear 20 Analysis Tools Reports Lap Map A lap map provides a lap by lap summary of vehicle performance allowing visual determination of differences between laps in a session sn Lap Maps 98041702 LD Ken Douglas Phillip Island 17 04 1998 4 17pm Reports Section Times The section time report displays a breakup of each lap into the time between section markers on the track The fastest time is highlighted in green while times within 296 of the fastest section time are highlighted in red An eclectic
8. it be necessary to disconnect the CAN cable prior to the download being completed the data downloaded to that point will be available for analysis This file will contain the most recent data as the Dash Logger downloads the newest data first 45 The PC can download a 4Mbyte data set from MoTeC ADL approximately one minute Engine Management System M800 M880 Data is downloaded with a MoTeC CAN cable The download is initiated from Interpreter by clicking on the Unload M800 M880ECU icon the toolbar or from the Connect menu Note that Interpreter cannot unload the log data if the EMP tuning software is still running Data from ECU s with software version 1 1 and above are downloaded via a MoTeC CAN cable attached to the parallel port of a Laptop Desktop computer This can be initiated by clicking on the Unload M800 880 ECU icon on the toolbar or by selecting the appropriate item from the Connect menu er The PC can download a 4Mbyte data set from a MoTeC M880 in approximately one minute MoTeC Acquiring Data 9 Engine Management System M4 48 M8 Data is downloaded from the ECU via a MoTeC PC Interface cable attached to the serial port of a Laptop Desktop computer Care must be taken to ensure that the correct labeled end is attached to the ECU as both ends of the cable use the same style of connector The download is initiated from within the DOS MoTeC Interpreter program by choosing the Get Log Data
9. record of the vehicle settings for the session in which the data was logged It is important that this information is updated each time data is downloaded both for keeping accurate records and some Interpreter math calculations Channel Setup There are a wide range of sensors that can be used to record information about the performance of a driver vehicle drivetrain and chassis The following sensors are an example of the most common channels of information used in chassis analysis and the important considerations MoTeC Acquiring Data 11 necessary for the sensor to provide accurate data for display and analysis in MoTeC interpreter G Force Sensor A G force sensor measures the vehicle acceleration in up to three directions The three axes are m Lateral G the left right forces felt when driving around a corner This sensor is conventionally calibrated to read positive for a left turn right force so G sensor arrow points right m Longitudinal G the forces felt during acceleration and braking This sensor is calibrated to read positive for acceleration backwards force so G sensor arrow points backwards m Vertical G the forces felt due to gravity This sensor is calibrated to read positive up downwards force so G sensor arrow points down The G sensor should be mounted as close as possible to the center of gravity of the vehicle and carefully aligned within 2 of the vehicle axis Angles greater than 2 reduce the accurac
10. Alt while making zoom area selection er To view the data adjoining the current zoomed section of a lap use the J jog forward or jog backward Data Overlaying Data from another log file may be overlaid to examine the effect of changing the vehicle setup or to examine differences between driving styles Standard logging allows the overlay of a single lap while Pro Logging allows up to eight laps to be overlayed X9 The variance between the two laps can be displayed to show where 7 time was gained or lost Channel Units Data from most logged channels can be displayed in whatever units are preferred by the user For example Air Pressure can be logged as PSI displayed as kPa and analysed as mm Hg depending on the preferences of the team members Right mouse click on the channel in the Data or on the graph label then select Channel Units and the desired measurement unit 16 Analysis Tools Multiple Views If the main Interpreter window is run in a reduced size mode it is possible to have multiple views displayed simultaneously When one is displayed it can be resized and moved around the screen To then display a second view click on the appropriate icon on the Interpreter shortcut bar See the section below on User Data Selection for an example of this MoTeC Analysis Tools 17 Track Map Overview The Track Map is a graphical representation of a circuit upon which data recorded during a vehicle out
11. Left Click Show zoom area statistics Ctrl amp Double Click Move Left Click 2D zoom vertical scale holds only for one zoom Shift amp Alt amp Double Click Move Left Optional update of Click Histogram and X Y Plot with data from zoomed area Keyboard Action Function Up arrow Zoom In Down arrow Zoom Out R Refocus to last zoom F2 Expand to full session W Expand to full current lap N Jump to same zoom on next lap P Jump to same zoom on previous lap F Jog zoom area forwards B Jog zoom area backwards General Mouse Action Appendices Function Right click on parameter label Right click elsewhere Show popup menu general Keyboard Action Function F3 Toggle overlay variance between none instantaneous and cumulative F4 Hide Show overlay Shift F4 Select Overlay Files and Laps F5 Edit Templates F7 Select Template F8 Select Lap F9 Toggle X axis Time or distance F11 Select Previous Template F12 Select Next Template 1 10 Select Templates 1 to 10 Shift 1 10 Select Templates 11 to 20 Ctrl 1 10 Select Templates 21 to 30 G Toggle graph format single or multiple Show popup menu this parameter only
12. accuracy of the track map is therefore completely dependant on the quality of the data recorded in the log file If the track map looks distorted the calibration of either lateral G or speed is incorrect Longitudinal G is not required however it is used to calculate corrected speed which eliminates the effect of wheel locking and or lifting to improve the Track Map calculation If Longitudinal G is not available it is important to choose a lap which does not have any wheel locking from which to generate the track map Wheel locking can be seen from a sudden downwards spike in wheel speed 2 f the track map is drawn as a mirror image of the real track then J Lateral G force calibration is incorrect Lateral G should be positive for Left hand corners Lateral G can be inverted using channel maths to correct this if necessary lt Check the G sensor calibration by turning it onto its side with the left UV side of the sensor facing up it should read 1G with the right side of the sensor facing up it should read 1G The sensor should be zeroed before each session for best results Check the speed calibration by comparing the lap distance reported in interpret against the stated track length They should be within 100M tv Sensor noise is common cause of being unable to draw a correct Track Map In the Graphical Analysis section check the speed trace for smoothness the data should follow consistent trends data that jumps up and
13. ally for each channel Data is recorded for the time between two lap beacons and stored if the lap time was faster then the previously recorded fastest lap 10 Acquiring Data Fastest Lap Logging is useful for fast recording of chassis channels such as suspension position and force without quickly consuming the logging memory of the device dg Fastest lap logging uses a portion of the main logging memory check logging time display to see how much normal logging is available Burst Logging 4MB and 8MB Logging Option Only Burst Logging allows a fast short duration event to be recorded at a high sampling rate The channels to be recorded are selected as normal however all channels are logged at the same rate A burst logging buffer is recorded when the Burst logging condition is TRUE however the trigger point in the buffer can be set between 0 and 100 to allow data to be recorded before the trigger event happened NU Burst logging uses a portion of the main logging memory check the logging time display to see how much normal logging is available File Format Logged data unloaded from a MoTeC device is stored in the MoTeC data logging format The file structure was designed as a fast flexible and extendable means to store logged data and vehicle details for analysis and display Vehicle Details The MoTeC file format also has the ability to store a wide range of vehicle details to provide a
14. ater sections of this manual MoTeC Software Summary 7 Preferences MoTeC Interpreter has a variety of options for the analysis and display of logged data The user can control the appearance and functionality of the software by adjusting the preferences These are accessible from the File Menu of the main Interpreter screen and from the main menu of each analysis function Printing MoTeC Interpreter has the capability to print all analysis screens on a wide range of printers A standard Windows print dialog is provided for customization of the printing options such as print quality orientation etc 8 Acquiring Data Acquiring Data Data for analysis may be downloaded from a number of MoTeC products if the data logging option has been enabled The data does not have to be unloaded by the computer that is used for data analysis however log files can be up to several megabytes in size therefore a simple computer network would be the preferred way to transfer logged data files between computers Dash Logger Data is downloaded from an ADL Dash Logger via a MoTeC CAN cable attached to the parallel port of a Laptop Desktop computer Downloading can be initiated from either MoTeC Dash Manager or MoTeC Interpreter by selecting the Unload Dash function The CAN cable can be disconnected from the vehicle when the scrolling status bar has disappeared and while the downloaded data is being converted into log file format Should
15. be a diagnostic message indicating why the math channel could not be calculated 26 Analysis Tools Standard and Pro Logging The following Math functions are available with Standard logging Distance Filter Scale Offset and Bike corrected Lateral G All other Math functions require the Pro Logging option MoTeC Analysis Tools 27 Histogram To improve the efficiency of the tuning process a RPM histogram shows the relative time spent at any one rpm point so that tuning effort may be concentrated upon the areas where the engine spends the most time The Histogram is defined by selecting the main channel for display This is broken into ranges on the horizontal axis with the vertical axis showing the amount of time spent in each range The number of bins and their sizes can be entered manually The vertical scaling can also be automatic or manually set to allow easier comparison between different sessions Up to 20 different Histogram Templates can be defined They can be viewed as a chart individual bar graph or stacked bar graph The duration of the Histogram can be for a single lap or the entire logged session Otherwise by using the User Data Selection feature the Histogram sample period can be selected from the graph screen X MoTeC Histogram 96100500 LD kd kd kn Bathurst 05 10 1996 3 00pm BEE Main Help Entire Session User Data Selection Enabling this option allows the user t
16. ci 31 Appendix 1 Graph Hot Keys 33 uA C 33 tercer raten e e ei ge e go d tec 33 LOOM M Saya 34 Copyright Motec Pty Ltd 1998 2002 The information in this document is subject to change without notice While every effort is taken to ensure correctness no responsibility will be taken for the consequences of any inaccuracies or omissions in this manual 26 August 2002 MoTeC Introduction Introduction Welcome Thank you for purchasing a MoTeC Data Acquisition and Analysis System MoTeC provides a range of powerful and flexible Engine Management Systems and Dash Loggers all of which incorporate data acquisition facilities This manual provides an introduction to data acquisition using these systems and documents the features of the MoTeC Interpret program which is used for data analysis and display A Throughout this manual look for this icon to find interesting tips and y information Additional Documentation Additional documentation is available in the form of User Manuals Drawings and Tech Notes MoTeC can supply the latest Indexes to these documents and any of these items as required User Manuals cover the individual MoTeC products such as Engine Management Systems Dash Data Acquisition Systems Lap Beacons Professio
17. der bar indicating the position of the car in the current lap The cursor can be positioned by using the mouse pointer to move the slider bar or by using the control buttons The lap chosen can be replayed in real time or at half or quarter speed by clicking on the green buttons at the bottom of the display EX Virtual Dashboard 19 Douglas Philip Island 18 02 1998 3 15pm View Add Movement Track MB log MB ECU Diagnostics Demo Main Wheel Speed Front Left km 2 N 24007 600 3000 0 800 0 930 1 000 Engine Oil Pressure kPa 0 0 231 0 3448 Throttle Position 2 0 0 Damper Temp Front L Suspension Position Front L Suspension Position Front R 20 0 360 Damper Temp Rear L jejeje aja j 3088 Lap5 1 44303 Normal Speed MoTeC Analysis Tools 31 XY Graph The XY Graph generates a scatter plot that allows for comparison of any parameter against any other parameter It is possible to select data that falls within defined values to further refine the analysis The colour of the graph can be displayed in terms of a selected parameter In the example below RPM is shown against Road Speed with the color of the trace being the gear selected As with the Histogram the time period of the X Y Graph can be for a single lap or the entire logged session Otherwise by using the User Data Selection feature the sample period can be selec
18. e in the data box Data Viewing By default data is organized by lap if lap beacon information was included in the log file The fastest lap is displayed when the graph is selected A specific lap can be selected from a list of laps logged by pressing F8 or the next or previous lap may be selected Hotkeys P amp N The cursor which can be moved by the pointing device or the arrow keys allows a specific point in the data to be highlighted The value at the cursor location for each graphed MoTeC Analysis Tools 15 channel is displayed in the graph title The Data Box displays the value of every logged channel at the current cursor location while the track map displays the track location for the current cursor position Click on a point on the track map to move the cursor to that location in 7 the data Zooming The graph may be zoomed to enable more detailed evaluation of a specific section of the data The same zoomed area can be viewed on different laps or different templates Zooming can be performed using either the keyboard up down arrows or the pointing device Double click at the start of the desired zoom area and move the pointing device to extend the selection click to zoom selected area A full list of Zoom functions is given in appendix A On Statistics can be calculated on the zoom area hold Shift while JU making zoom area selection V Data can be re scaled vertically while zooming hold
19. if these have been recorded by the Dash Logger Up to four different sets of logging conditions can be defined for the Engine Logs Also available is the Lap Report which shows details of a list of channels on a lap by lap basis The channels viewed can be selected by clicking on the Preferences button Statistics 98041702 LD Ken Douglas Phillip Island 17 04 1998 4 17pm Normal Log Fastest Lap Log Burst Log 1 Burst Log 2 Diagnostic Status Lap Report 564 1208 670 1208 702 1216 724 1215 753 1213 767 1209 78 6 11 98 822 3240 6702 68 8 4 759 1211 3414 6888 719 13 758 1205 6744 1 5 30 Analysis Tools Virtual Dash You can re drive any lap in real time with all logged channels available for viewing This can be a useful tool for viewing the inter relationships between data As with the MoTeC Telemetry Monitor program multiple views can be created from a choice of many different objects The different types can be selected from the Add menu and the channel to be displayed assigned along with other properties of the display object The properties of an object can be changed by right clicking on it and then selecting Properties from the menu Once a view is created it can be saved or modified for re use The user can open multiple views and switch between them by clicking on the name tag Each view can display a different set of information At the bottom of the window is a sli
20. ility Software Navigation Moving around within MoTeC Interpreter as in any Windows program can be achieved via either the Keyboard or a Pointing Device Mouse Trackball etc Keyboard Hot Keys pop up and pull down menus are all provided to allow the user to navigate using their preferred technique The use of a combination of keyboard Hot Keys keys and the pointing device is usually the fastest way to control a program especially when using the sometimes difficult pointing device supplied with most notebook computers The Alt key will activate the pull down menus of the application currently running while the arrow keys allow navigation through the menu and the Enter key activates the menu item currently highlighted number of more frequently used functions may have Hot Keys to enable direct access without using the menus These Hot Keys will be shown against the pull down menu items memorize the ones that may be useful to you The screen cursor moves in response to movement of the Mouse Pointing Device Using the left mouse button when the cursor is on top of a menu item or command button will activate that function Double clicking an object will usually select the object while a right click will generally display the relevant menu items for an object in a Popup Menu This is usually a more convenient way of accessing the menu functions A description of specific shortcut keys is included in l
21. ing is displayed in a easy to understand format This provides a useful tool to determine what is happening to the vehicle at a particular point on the circuit The track map offers a number of reports for different analysis of session data The Track Map shown below is a lap of Bathurst with throttle usage gear change points maximum and minimum speeds and braking points displayed EM Track Map 96100500 LD kn kd kd kn Bathurst 05 10 1996 3 00pm Main Reports Window Help Lap 10 217 670 2 A Avg Speed 163 5 Kph Full Throttle 48 5 Brake 85 100 16 84 TP 0 15 TP amp speed Distance 6 25 Km Throttle 63 8 01 Calculations and Requirements The Track Map is a representation of the line that was driven around the track and not the exact shape of the track itself although for the purposes for which they are used they are effectively the same The Track Map can be generated from data recorded during a vehicle outing or an existing Track Map may be used for data display lf an existing track map is used to display new data the only requirement is that vehicle speed exists in the log file 18 Analysis Tools However if a new track map is to be calculated and drawn some extra information must be logged The necessary channels are m Speed m Lateral force B Lap Beacon The Track Map is automatically generated from an analysis of vehicle speed and lateral G force The
22. ith several options as listed below Basic logging is optional on the MoTeC M800 or M4 48 Engine Management Systems There is 1Mb of memory available with the M800 4Mb with the M880 and 512kB with the M4 48 The ADL allows user defined logging rates of 1 1000 samples second and 1 200 samples second on an M800 880 Several analysis techniques are provided with basic logging including Graphical Analysis Mixture Maps and Statistics However the more advanced functions are available only with the Pro Logging option 4 Overview ADL Logging Options 1MB Upgrade Upgrades the MoTeC Dash Loggers logging memory from 384kB to 1MB 2MB Upgrade Upgrades the MoTeC Dash Loggers logging memory from 1MB to 2MB 4MB Upgrade Upgrades the MoTeC Dash Loggers logging memory from 2MB to 4MB Also includes Fastest Lap and Burst Logging Modes 8MB Upgrade Upgrades the MoTeC Dash Loggers logging memory from 4MB to 8MB Note that this is only available with the ADL 8 Pro Logging Pro Logging is optional on both the MoTeC M800 Engine Management System and MoTeC Dash Logger Pro Logging adds sophisticated functionality to the capabilities offered in Basic Logging These extra functions include Multiple Graph Overlays extra Mathematics Virtual Dash and others Backlit Display Available at time of order the ADL can be specified with an electro luminescent backlit display Extended Inputs and Outputs Increases the number of Input and Out
23. nal Lambda Meter Drawings cover the following categories Accessories ECUs Looms Ignition Modules Combined Module amp Trigger Systems Trigger Systems Valves Sensors Miscellaneous Tech Notes cover topics such as m Traction Control B Boost Control Introduction B Idle Speed Control m Drive By Wire B Wide Band Lambda Sensor MoTeC Overview 3 Overview MoTeC Interpreter is an advanced analysis tool to assist in unloading of logged data from MoTeC products and for quick efficient data analysis and display Data may also be retrieved from alternate file formats and converted to MoTeC log data for users migrating from alternate data acquisition systems contact MoTeC for details The information contained within the log files may be viewed in a variety of formats from a short summary of the session for a quick systems check through to many formats of graphical and text display including Graphing against time or distance Track mapping Rainbow charts Engine Histogram XY Scatter Plot Air Fuel mixture map Statistics Etc Mathematical data analysis is also included to smooth data calculate handling traits such as understeer oversteer and other powerful analysis tools The capabilities of MoTeC Interpreter are controlled by the options enabled in the MoTeC ECU or ADL Dash Logger System Logging Options and Accessories Basic Logging The MoTeC Dash Logger has 384kB as standard this can be upgraded w
24. o link the Histogram and X Y plot to a section of the data selected on the graph display When the histogram 28 Analysis Tools template has been defined this feature can be used to examine the behaviour of channels over a certain section of the data To enable this function select Preferences from the File menu on the main Interpreter window and click on the Graph tab The shows a section for User Data Selection with options to update XY Graph and Histogram To update a histogram or XY graph with data from a section of the graph display hold Alt Shift then double click and select an area The duration of the Histogram data and or X Y graph will now be over the time period highlighted in the graph screen Note For this feature to work effectively it is recommended that Interpreter be run in a reduced size mode ie not maximised on the screen This will make it easier to display multiple types of data graph and histogram and or track map In the screen capture below the three windows displayed have been resized and positioned on the screen to make best use of the screen space Surpencion Frant Lap 1244303 MoTeC Analysis Tools 29 Statistics The statistics screen shows a summary of the logged session selectable by the logging type Normal Fastest Burst etc Along with occurrences of diagnostic errors and their duration and a summary of the Engine Logs
25. put pins available for MoTeC Dash Loggers See the appropriate User manual or brochure for further details Wideband Lambda Inputs Two wideband temperature compensated Lambda exhaust gas mixture strength inputs are optional on both the MoTeC M800 Engine Management System and MoTeC Dash Logger The M4 48 has the option for a single wideband Lambda input MoTeC Overview 5 Telemetry Gives in the pits viewing of real time data of a vehicle in action Supports both continuous and end of lap data transmission The user can define a multiple page setup to view the data as text warning alarms numerics bar charts gauges scrolling charts and moving track maps Lap Beacon Transmitter Receiver The MoTeC infrared beacon system provides 990 unique channels for lap timing A lap beacon is essential for logging lap times generating track maps and overlaying data See the beacon user manual for further details 6 Software Summary Software Summary MoTeC Interpreter is designed for the Windows95 98 ME XP and Windows NT 20000 operating system Note The log data unload feature is only available when operating in Windows MoTeC Interpreter requires a Pentium or equivalent processor with 16Mb of RAM recommended 32Mb 6Mbytes of hard drive space is required for installation however it is recommended that at least 30Mbytes of hard drive space is free at all times for new log data storage and general system reliab
26. r adding a user constant click on Save and then reopen Maths to use the constant in an expression 24 Analysis Tools Default Math Current File Math User Constants D e Calculate Corrected S peed Calculate Cummulative Distance Calculate Oversteer Cancel Help Change Clear On Off 4 Defining a Math Function Select and highlight a blank line they are numbered 1 through 60 in either Default or Current File math and then click on the Change button This will bring up a window showing the different types of calculations available Interpreter includes a range of pre defined functions to simplify performing Math operations For more complex calculations Interpreter includes the Expression Evaluator where users can enter the expression or function that they wish to calculate Whether using the Expression Evaluator or the pre defined functions it will be necessary to select one or more Source input channels Clicking on the Select button next to each source channel will bring up a list of all available channels not just those in the currently logged file After choosing the Source channel and selecting any other options choose the result channel Again a list of all channels is displayed after clicking on the Select button Care should be taken to select a channel with appropriate units for the result MoTeC Analysis Tools 25 Next the type of measurement voltage tempe
27. rature pressure etc is selected followed by the actual units for that measurement type Click OK to go back to the main math window EM Current File Mathematics 20001029 0013002 Id Ant Phillip Island 29 10 2000 2 43pm Divide Multiply Expression Evaluator Miscellaneous User Math Module Copy Rename Scale Offset Filter Differentiate Integrate Subtract Add Average Average Channel 1 and Channel 2 Result Average Source 1 Source 2 Source Channel Source 1 Wheel Speed Front Select Clear Source 2 Wheel Speed Rear Select Clear Result Speed 1 Large Linear Speed Result Channel kilometre hou Select Clear DK Cancel Help After setting up one or more math channels click on Save to close the Math window and the calculations will be performed Be sure to Save calculations before moving between the three sections Use the Math Status View to determine if the calculations have been performed successfully Note when using a negative number in an expression the value must be bracketed so that the negation is not confused with another operator Eg SOURCE lt 1 5 is true if Source is less than 1 5 Details on the specific functions available are given in the Interpreter Help file Math Status This display will show the results of math channel calculations If they have been unsuccessful then there will
28. ted from the graph screen See the Histogram section above for details Up to 20 different X Y Graph templates can be defined MoTeC XYGraph 96100500 LD kn kd kd Bathurst 05 10 1996 3 00pm Main Help RPM Template 1 Speed Vs RPM 3659 Samples Entire Session Throttle Position Greater Than 90 0 000 6000 BOOM 100 0 150 0 200 0 260 0 Dig Input 1 Speed MoTeC Appendices Appendix 1 Graph Hot Keys Cursor Mouse Action Function 33 Left click on graph Reposition cursor to mouse position Left drag on graph Move cursor to mouse position Keyboard Action Function A Animate cursor Left or right arrow Move cursor left or right small Ctrl left or right arrow Move cursor left or right large Home Move cursor to start of window End Move cursor to end of window Components Keyboard Action Function C Cross hairs show hide E Error amp Status details show hide L Graph label show hide O Font size small large S Lap Section markers show hide T Track map show hide V Values box show hide 34 Appendices Zoom Mouse Action Function Double Click Move Left Click Zoom In horizontal Alt amp Double Click Move Left Click Zoom In vertical Shift amp Double Click Move
29. y of the sensor A G sensor can be easily tested by turning the sensor so that the arrow points down The sensor should read 1G the force of gravity Steered Angle The Steered angle sensor measures the angle of the road wheel where 0 is straight ahead and positive degrees is a right turn The sensor is typically mounted to the steering column but calibrated in degrees of road wheel steering not steering wheel angle The sensor should be calibrated using the outside wheel i e the right wheel for left turn and vice versa especially if the vehicle has Ackerman steering The steered angle sensor can be calibrated as follows 1 Place the front suspension on axle stands so the front wheels are off the ground but the front suspension is loaded 2 Using the Sensor Calibration function in the MoTeC Dash Manager calibrate the sensor according to the table below A table of the measured distance at the rim for 13 to 18 wheels is included below The measurements are millimeters difference between the front and rear of the rim to a parallel reference line 12 Acquiring Data 13 14 15 16 17 18 2 11 5 12 4 13 3 14 2 15 1 16 0 4 23 0 24 8 26 6 28 3 30 1 31 9 6 34 5 37 2 39 8 42 5 45 1 47 8 8 46 0 49 5 53 0 56 6 60 1 63 6 10 57 3 61 7 66 2 70 6 75 0 79 4 Suspension Position The position of suspension components can be measured Suspension position positive for bump compression and negative for rebound droop Force
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