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RACELOGIC Support Centre

Tyre Test - Tyre Traction

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This page contains an overview of the Test Setup in the Tyre Traction Plugin.

The Tyre Traction plugin for VBOX Test Suite gives you the ability to compare the traction forces and wheel slip of different tyres.

Ribbon - Test Setup

The Tyre Traction plugin has a unique Test Setup ribbon, from which you can configure the test.

VBTS_TyreTraction_TestSetup.svg

Test Section

VBTS_TestSetup_TestSection.svg

Configure

Click on the Configure button to open the Settings window where you can define the parameters of the test.

Report

Click on the Report button to create a report from the current test results.

Maths Channel

Click on the Maths Channels button to open the Maths Channels window to configure unique maths channels. You can find more information about maths channels in the Test Setup section.

Save Settings

Click on the Save Settings button to save the current test setup and add it to the Saved Settings area in the Add Test window.

The test will also be added to the list under the Performance Test button on the Home tab for easy access.

Export

Click on the Export button to display a dropdown menu with the export options. You can export the selected results or line results to a .csv or a .txt file. 

Gate Section 

VBTS_TestSetup_GateSection.svg

Add Gate
VBTS_TestSetup_GateSection_AddGateButton.svg

Click on the Add Gate button to add a virtual gate to the chart and map at the point of the cursor. Gates are indicated by green lines. The currently selected gate will be indicated by a blue line.

You can now use the gates to define start and/or end conditions.

Note: Opening a plugin (either as a new tab or overwriting an existing one) will clear all set gates, requiring you to redefine the gates before you amend the test configuration to set start/end conditions.
Gate Name

When you have added a gate, the name of the currently selected gate will be displayed in the name box. Click on the arrow in the box to see a dropdown list of all the added gates. The gates will be named according to the type of gate (if applicable) and the order it was added.  

Note: You cannot have multiple gates with the same name.   
Width

When you have added a gate, you can specify the gate width. The default gate width is 20 m.

Type the required width in the Width (m) value box. 

Note: If you change the gate width, the last used gate width will be used as the default width for the next gate. 
Rename

Click on the Rename button to edit the currently selected gate line.

Delete

Click on the Delete button to delete the currently selected gate line. 

Export

Click on the Export button to export the created gate(s) as an .spl file. This file can be reused at a later date and with another VBOX product.

Import

Click on the Import button to import a previously saved or provided .spl file. When the file is imported, the gates will be added in the order that they were saved in the .spl file.

Data Column Section 

VBTS_TestSetup_DataColumnSection.svg

Add

The Add button adds a column to the Test Results area. Click this button to open a dropdown menu where you can select a channel to display in the test results window.

Channel 

When you select a column header in the Test Results area, the channel name will be displayed in the Channel box (the top box in the Data Column section). Some columns will have required channels and cannot be changed, but if you can change the channel, the Channel box will become a drop-down list with the available channels.    

Data column_SelectedColumn_DefaultChannel.svg

Data column_SelectedColumn_EditChannel.svg
Result Condition

When you select a column header in the Test Results area, and it is a changeable channel, the Condition dropdown menu becomes available. The conditions will depend on the test and selected channel.

Examples are:

  • Avg
  • Max
  • Min
  • Delta 
  • At Start
  • At End
Sort Ascending

The Sort Ascending button will sort the values in the currently selected column in the Test Results area in alphabetical order from A to Z.

Sort Descending

The Sort Descending button will sort the values in the currently selected column in the Test Results area in alphabetical order from Z to A.

Run Section 

VBTS_TestSetup_RunSection.svg

Select All

Click on the Select All button to select every run in the Test Results area with one click.

Deselect All

Click on the Deselect All button to deselect every run in the Test Results area with one click.

Session Section
Edit Data 

VBTS_TestSetup_SessionSection.svg

Click on the Edit Data button to open the Session Data window and add various vehicle and test information, such as:

 VBTS_TyreTraction_SessionData.svg

  • Tyre Size
  • Rim size
  • Pattern name
  • Inflated pressure
  • Purpose
  • Comments

When in Offline mode, the Session Data will be saved into the VBOX file.  This information will be recalled every time the file is loaded into VBOX Test Suite.

When in Online mode, a newly created session will be populated with session data from the previous session.

To save time, you can import and export the session data for other sessions. When you have completed the Session Data, you can export the data to a .vbses file by clicking on the Export button in the Session Data window. The exported file will contain all the session data and can be imported into another session via the Import button in the Session Data window.

Help Section 
Help

VBTS_TestSetup_HelpSection.svg

Click on Help to automatically open an Internet browser and load the relevant section of the User Guide on the Racelogic Support Centre.

Note: This page will only be displayed if there is a valid internet connection. If there is no valid internet connection, a cached version of the relevant section (from the last software update) will be presented in PDF form.

Test Settings

If you are creating a new test, the Settings window will open when you add the new test. This is where you can define the test parameters.

If you have already added a test and you have it open, you can click on the Configure button to open the Settings window to define or amend the test parameters.

VBTS_TyreTraction_Settings.svg

Test Details

The test details will form the header of the report page:
 

Test Request No.

Enter the request number for the test.
 

Date

Enter the test date.
 

Track

Enter the name of the test track.
 

Vehicle

Enter the identification you want to use for the test vehicle. 
 

Vehicle Mass (kg)

Enter the weight of the vehicle mass. This will be used to calculate the force value. Use the arrow buttons next to the value box to increase/decrease the value or click in the value box to type it directly in the box. 
 

Driver

Enter the driver identification. 

 

 VBTS_TyreTraction_Settings_TestDetails.svg
Test Condition
Start Speed (km/h)

Enter the speed that the test will start at. 

Use the arrow buttons next to the value box to increase/decrease the value or click in the value box to type it directly in the box. 

Note: Do not start this test from zero as this will lead to the presence of noise that occurs at low GPS and wheel speeds.
 

End Slip (%)

Enter the percentage of slip that the test will end at.

Use the arrow buttons next to the value box to increase/decrease the value or click in the value box to type it directly in the box. 

 VBTS_TyreTraction_Settings_TestCondition.svg
Wheel Speeds
Front Left

Choose the channel that the software will use to calculate the speed of the front left wheel.
 

Front Right

Choose the channel that the software will use to calculate the speed of the front right wheel.
 

Rear Left

Choose the channel that the software will use to calculate the speed of the rear left wheel.
 

Rear Right

Choose the channel that the software will use to calculate the speed of the rear right wheel.
 

Driven

The Driven tick boxes specify if the vehicle is front wheel drive, rear wheel drive or 4-wheel drive.Tick one or both to make set your vehicle configuration.
 

Omit Calibration

Tick the Omit Calibration box to make VBOX Test Suite calculate the wheel slip channel from the start of the test without calibration.

 VBTS_TyreTraction_Settings_WheelSpeeds.svg
Slip Analysis
Slip % Low

Enter a Slip % Low condition that will be the lower limit used in the Area under the curve evaluation.

Use the arrow buttons next to the value box to increase/decrease the value or click in the value box to type it directly in the box. 
 

Slip % High

Enter a Slip % High condition that will be the upper limits used in the Area under the curve evaluation.

Use the arrow buttons next to the value box to increase/decrease the value or click in the value box to type it directly in the box. 

 VBTS_TyreTraction_Settings_SlipAnalysis.svg
Throttle Rate Pass Conditions

This setting is an optional channel that is only required if you want to look at the throttle application as part of the test.

If any test run exceeds the set criteria, the run will be highlighted in the results table.
 

Channel

Select which channel the software will reference when calculating the Throttle Rate.

Click on the dropdown arrow to see the list of available channels.
 

Average Low / Average High

To make sure that the tests are undergoing the same rate of throttle application, you can enter the upper and lower limits for the Average of the throttle application.
 

Std Dev Low / Std Dev High

To make sure that the tests are undergoing the same rate of throttle application, you can enter the upper and lower limits for the Standard Deviation of the throttle application.

 VBTS_TyreTraction_Settings_ThrottleRatePassConditions.svg

 Test Results Area

The Test Results area is the area that displays all of the results from the current test. In this area, you can include/exclude results from the Chart area, display the average/max/min values and also easily identify any runs that have not met the pass criteria.

Every time you start a new test (via the START button on the dashboard), or load a new file, a new tab will be added to the Test Results area. This gives you the ability to switch between separate tests or files and compare runs from each. You can remove a session from the Test Results area by clicking on the X icon on the session tab.

Note: Whenever you make any changes to the test configuration, maths channels, vehicle dimensions, test units or session data, Test Suite will perform a file scan to apply the changes to the loaded files and update the Test Results, Map and Chart areas.  If you, for any reason, want to cancel this results scan, you can click the red X in the top right corner of the workspace. This will keep the updated settings but will not update the Test Results, Map and Chart areas accordingly.  
Rename File

You can rename a session tab by double-clicking the tab header. Changing the name on the session tab in the software will automatically change the name of the locally saved VBOX file (.vbo or .vbb).

Edit Session Data

By pressing the Edit Data button next to the name of the session in the Test Results area or on the Test Setup tab on the ribbon, you can add vehicle and test information to the session.

  • When in Offline mode, this information will be saved into the VBOX file, meaning that this information will be recalled every time the file is loaded into VBOX Test Suite.
  • When in Online mode, a newly created session will be populated with session data from the previous session.

This information will be included in the test report to make it easier to see under what conditions the test was conducted.

To save time, you can import and export the session information for use in other sessions (the entire range of data is exported, not just the visible screen).

Once the session information has been completed, you can export the data to a .vbses file. This file will contain all the session information that can then be imported into the open session information field.

Result Columns

VBTS_TyreTraction_Results.svg

The Test Results area has the following default columns:

Run Indicates which run number the results relate to, with run one being the first run completed.

There is also a selection box that, when ticked, includes that run in the graph and into the Average/Max/Min/Standard Deviation calculations. Once selected, a coloured square will appear to indicate which colour this run is displayed as on the graph.
 
Note: If you are loading a file in Offline mode, all valid runs will automatically be ticked.
Time (s) The total time the run has taken.
Distance (m) The total distance travelled in that run.
Force (Max) (N) The maximum force experienced during the run.
Slip @ Force Max (%) The slip % experienced at the maximum force measurement.
Speed (Max) (km/h) The maximum speed attained during the run.

The software will automatically add columns based on your configured test settings:

Throttle rate Max The maximum rate of throttle application.

Note: This result is only displayed if a Throttle Rate channel has been selected.
Throttle Rate Average The average rate of throttle application.

Note: This result is only displayed if a Throttle Rate channel has been selected.
Throttle Rate StdDev The standard deviation of the rate of throttle application.

Note: This result is only displayed if a Throttle Rate channel has been selected.
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