Patent ID: 8525463
Filing Date: 2013-09-03
Classification: F02D,Y02T

Abstract:
1. A malfunction determination device for a motor control system that includes a position signal output section that outputs a position signal that indicates a moved position of a movable member of a motor and a direction signal output section that outputs a direction signal that indicates a movement direction of the movable member to execute operation control of the motor, the malfunction determination device comprising: a malfunction determination section that determines a malfunction has occurred if a relationship between the position signal and the direction signal differs from that when no malfunction has occurred in the motor control system, wherein: the position signal output section outputs a pulse signal that varies periodically along with variations in the moved position of the movable member as the position signal, the direction signal output section outputs a periodic pulse signal in the same phase with the position signal as the direction signal if the movable member is moving in one of a forward direction and a reverse direction, and the direction signal output section outputs a periodic pulse signal in an opposite phase to the position signal as the direction signal if the movable member is moving in the other of the forward direction and the reverse direction.