Patent ID: 9689774
Date: 2017-06-27
CPC Classifications: B60L,G01M,H02P,Y02T

Claim:
1. A torque command generation device that generates a motor-generated-torque command signal for driving a motor in a drivetrain test system for generating a torque imitating an engine of a vehicle with a motor connected to a shaft of a drivetrain of the vehicle, the device comprising: a limit value calculation unit for calculating a limit value for a value of the motor-generated-torque command signal according to a revolution speed of the motor; a DC signal generation unit for generating a DC signal; an AC signal generation unit for generating an AC signal; and a compositing unit for compositing the DC signal and the AC signal to generate the motor-generated-torque command signal, wherein the AC signal generation unit includes: a surplus amplitude calculation unit for calculating a surplus amplitude by subtracting the limit value from a sum of a value of the DC signal and a predetermined base amplitude; and a transmission unit for generating the AC signal of an amplitude obtained by subtracting the surplus amplitude from the base amplitude, wherein the AC signal generation unit generates the AC signal of an amplitude such that the value of the motor-generated-torque command signal does not exceed the limit value, by using the surplus amplitude calculation unit and the transmission unit.