Patent ID: 7994748
Filing Date: 2011-08-09
Classification: H02P,Y02T

Abstract:
1. A drive control system of an electric vehicle, comprising: a motor that drives a driving wheel; a motor driving means for generating torque on the motor dependent on a determined driving torque value by supplying power to the motor; a number of revolutions detection means for detecting a number of revolutions of the motor; a grip number of revolutions calculating means for calculating a current grip number of revolutions of the motor based on a number of revolutions stored before a predetermined time, wherein the grip number of revolutions is defined as the number of revolutions of the motor in case where the driving wheel is driven with grip during a predetermined time, and the number of revolutions of the motor before the predetermined time is stored; a limiting torque determining means for determining a limiting torque value of the motor based on a smaller number of revolutions that is determined by a comparison of a current number of revolutions detected by the number of revolutions detection means and the current grip number of revolutions calculated by the grip number of revolutions calculating means; and a driving torque determining means for determining a driving torque value of the motor based on the limiting torque value and outputting to the motor driving means.