Patent ID: 8159173
Filing Date: 2012-04-17
Classification: H02P,Y02T

Abstract:
1. A control device for a travel motor mounted to a vehicle which is equipped with a travel motor and a resolver, where the travel motor drives the vehicle, and the resolver works as a rotation angle sensor to detect a rotation angle of the travel motor, generate and output rotation detection signals, which correspond to a rotation angle of the travel motor, such as a first rotation detection signal and a second rotation detection signal, the first rotation detection signal has a waveform obtained by amplitude modulation of an exciting signal by sin θ which is an angle obtained by multiplying the rotation angle of the travel motor by an integer of “n” times of not less than 1, and the second rotation detection signal has a waveform obtained by amplitude modulation of an exciting signal by cos θ, the control device capable of controlling a supply of an electric power to the travel motor based on a rotation angle output value φ, comprising: