Final drive

Final Drive block diagram

Role of subsystem in vehicle
The ‘final drive’ block transmits torque and speed requests from the ‘wheel and axle’ to the ‘gearbox’ or whatever physically inputs torque to the final drive. It also transmits actual torque and speed from the ‘gearbox’ back to the ‘wheel and axle.’

Description of modeling approach
The final drive model includes the effects of losses, inertia, and gear ratio in both the ‘request’ and ‘actual’ data flow paths. Torque loss is assumed to be constant. The gear ratio reduces the speed input by ‘gearbox’ or whatever other input exists, and increases torque. Inertia is measured and losses are applied at the input side of the gear reduction.

Variables used in subsystem

See Appendix A.2: Input Variables

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