Configure Virtual Vehicle Data

Step 2 of 7 in Get Started with the Virtual Vehicle Composer

Before completing this step, see Setup Virtual Vehicle, which began the setup of an EV with one electric motor.

Next, use the Data and Calibration options to configure the virtual vehicle chassis, tire, brake type, powertrain, environment and driver. The available options depend on the virtual vehicle Powertrain architecture and Model template parameter settings.

Chassis

Use the Chassis parameter to select the body dynamics and mass properties. The available options depend on the virtual vehicle Setup > Vehicle dynamics parameter.

For this example, set Chassis to Vehicle Body 3DOF Longitudinal, and use the default values for the mass properties.

Tire and Brake

Use the Tire and Brake Type options to specify the tire and brake parameters.

1. Set Tire to MF Tires Longitudinal to configure a tire model suitable for drive cycle analysis.

   • On the Tire Data tab, enter the tire parameters for your virtual vehicle, including:

     • PlntWhlLdRadius — Tire loaded radius

     • PlntWhlPrsFrnt — Front tire pressure

     For this example, use the default parameter values.

2. Set Brake Type to Disc.

   • Enter the brake parameters for your virtual vehicle, including:

     • PlntBrkStcFricCffFrnt — Static friction coefficient for front brakes

     • PlntBrkKinFricCffFrnt — Kinetic friction coefficient for front brakes

     For this example, use the default parameter values.

Powertrain

Under the Powertrain tab, set parameters for the powertrain systems such as the engine, electric motor, transmission, drivetrain, differential system, and electrical system for your virtual vehicle. The available options depend on the virtual vehicle Powertrain architecture and Model template parameter settings.

For this example, under Powertrain, set:

1. Vehicle Control Unit to EV 1EM with BMS.

2. Drivetrain to Front Wheel Drive.

3. Drivetrain > Front Differential System to Open Differential.

4. Electrical System to Electrical System.

   • Specify the DC-DC Converter parameters, such as electrical conversion losses and measured efficiency:

     • PlntDCDCEff — Overall converter efficiency

     • PlntDCDCLossTbl — Conversion losses

     For this example, use the default parameter values.

   • Click Electric Machine 1 > Parameters to specify the motor parameters, including:

     • PlntEM1Spd — Vector of rotational speeds in torque table

     • PlntEM1Trq — Corresponding vector of maximum torque values

     For this example, use the default parameter values.

   • Click Energy Storage, then select Mapped Battery (Electric Vehicle 1EM) to specify parameters for a mapped lithium-ion battery model, including:

     • PlntBattOpenCirctVolt — Open circuit voltage table data

     • PlntBattVoltSocBpt — Open circuit voltage breakpoints

     For this example, use the default parameter values.

Driver

Under the Driver tab, set the driver parameters. The available options depend on the virtual vehicle Powertrain architecture and Model template parameter settings.

For this example, set Driver to Longitudinal Driver to implement a driver suitable for drive-cycle tracking.

• Enter the driver data for your virtual vehicle, including:

  • DriverPreviewDist — Preview distance

  • DriverTimeConst — Time constant

  For this example, use the default parameter values.

Environment

Under the Environment tab, set the environment parameters. Set Environment to Standard Ambient.

• Enter the environment data for your virtual vehicle, including:

  • EnvAirTemp — Ambient air temperature

  • EnvWindVelX — Ambient wind velocity in X direction

  For this example, use the default parameter values.

After completing this step, see Configure Virtual Vehicle Scenario and Test.