METHOD OF MOTOR SPEED CONTROL FOR IMPROVING THE PERFORMANCE OF RUNNING RESISTANCE EVALUATION

摘要

The present invention relates to a method for controlling a motor speed for improving performance of a running resistance evaluation and, more specifically, to a method for controlling a motor speed for improving performance of a running resistance evaluation which prevents the driving force of a motor from being transferred to a wheel through a transmission by a reverse drive drag of the transmission during an N-gear running resistance evaluation of a hybrid vehicle by controlling the motor speed to equal the input speed of a transmission to the output speed of the transmission to reduce a deviation in the result of the running resistance evaluation for an individual vehicle. One embodiment of the method for controlling a motor speed for improving the performance of a running resistance evaluation according to the present invention comprises: a step of determining an initiation of the running resistance evaluation in which a control unit determines whether or not a vehicle has an entry condition for a coast-down test; a step of controlling a motor speed in which the control unit controls the input speed (m) of the transmission such that the input speed (m) of the transmission is the same as the output speed (v) of the transmission when the vehicle has the entry condition for the coast-down test; and a step of completing a coast-down test in which the control unit completes the control of the motor speed using the motor speed and the output speed (v) of the transmission.