MDLLIB for Advanced Driver

It is highly recommended that the vehicle models used to driving analysis are built using the MDLLIB for the advanced driver. They cover all the dependencies of the driver on several vehicle systems. There are some API’s even at the solver level that are required by the driver.

This MDLLIB also provides an interface to model Brakes and Powertrain systems. These systems are required by the driver. Driver also requires a signal generator containing five solver variables. This signal generator is an interface to feed user defined signals to the driver.

Assembly Wizard Changes

1.	Model type – new options “Full vehicle with advanced driver”.

altair_driver_assembly_wizard_full_vehicle_driver_mv

2.	Primary systems for full vehicle with advanced driver model.

a.	Powertrain:

I.	Manual transmission: IC Engine Friction Clutch Powertrain.

II.	Linear Torque Map Powertrain: Engine that applies torque directly proportional to driver throttle output.

b.	Driver Signal Generator: Five solver variables which provide and interface to link user defined signals to the driver.

altair_driver_assemb_wizard_primary_sys_mv

3.	Select a driveline system.

a.	Disk brakes: Apply braking torque on the wheel joint proportional to the driver brake output.

altair_driver_assemb_wizard_disk_brakes_mv

Task Wizard Changes

There should be only one option for the full vehicle with advanced driver.

1.	Altair Driver Analysis: At the end of the selection procedure and after the FINISH button is clicked, the Driver analysis with the driver panel should appear.

altair_driver_task_wizard_full_vhcle_mv

Driver Outputs

Driver Outputs	F2: Steering Angle F3: Throttle F4: Brake F6: Gear F7: Clutch
Driver Inputs (1)	F2: Vehicle CG (x) wrt Gyro F3: Vehicle CG (y) wrt Gyro F4: Yaw angle wrt Gyro F6: Roll Angle F7: Pitch Angle
Driver Inputs (2)	F2: Longitudinal velocity wrt gyro F3: Lateral velocity wrt gyro F4: Yaw rate wrt gyro F6: Roll rate F7: Pitch rate F8: Engine Speed *Only in case of manual transmission
Driver Inputs (3)	F2: Longitudinal acceleration (wrt gyro) F3: Lateral acceleration (wrt gyro)
Signal Channel (1)	F2: OL Signal 0 F3: OL Signal 1 F4: OL Signal 2 F6: OL Signal 3 F7: OL Signal 4
Driver Requests general	F2: Distance traveled
Driver Requests – Long Controller	F2: Demand Signal (Acceleration/Velocity) F3: Control Signal (Acceleration/Velocity) F4: Error (Demand – Control Signal) , e F6: Error derivative , F7: Error integral, Acceleration if type = follow acceleration Velocity if type = follow velocity **Works only if Longitudinal Controller is closed loop type.
Driver Requests- Steer Controller	F2: Path x coordinate F3: Path y coordinate F4: Distance along centerline F6: Laps completed F7: Error (Demand – Control Signal) F8: Reserved **Works only if Steering Controller is closed loop type.

Driver Analysis Components

Typically it is not necessary to edit the analysis components, however advanced use may require editing these properties.