Patent ID: 8676469
Filing Date: 2014-03-18
Classification: B60K,B60L,B60W,H02P,Y02T

Abstract:
1. A vehicle drive motor control system comprising: voltage conversion means for converting a direct-current voltage to an alternating-current voltage and supplying the alternating-current voltage to a vehicle drive motor; accelerator actuation amount detection means for detecting an accelerator actuation amount for a vehicle; brake actuation amount detection means for detecting a brake actuation amount for the vehicle; control means for calculating a requested drive torque value based on the accelerator actuation amount detected by the accelerator actuation amount detection means, and controlling the alternating-current voltage output from the voltage conversion means, according to the requested drive torque value; and motor locking determination means for determining whether or not the vehicle drive motor is in a locked state, wherein the control means gradually decreases a maximum drive torque value to a preset value if the motor locking determination means determines that the motor is in a locked state; wherein the control means limits the maximum drive torque value to the preset value until the brake actuation amount detection means detects that a brake of the vehicle is turned on; and wherein the control means sets the time required from the detection of turning-on of the brake by the brake actuation amount detection means to cancellation of the limitation of the maximum drive torque value to be equal to or shorter than the time normally required to make a switch from actuation of the brake to actuation of an accelerator.