PURPOSE: To provide a rear wheel steering angle control device with which smooth motor response can be realized even in a motor encoder with low resolution.
CONSTITUTION: Not only a signal of a motor encoder but also a signal of a rear wheel steering angle sensor is used for motor position control. Computation based on detection values of the encoder is conducted from a step S2 to a step S4, and computation based on detection values of the rear wheel steering angle sensor 3 is conducted from a step S5 to a step S8. Based on thus computed values, (P1+P2+I1+I2-D1-D2) is computed at a step S9 to be outputted as a current command value to a motor driver. Even in the case of a motor encoder with low revolution, by combining it with the rear wheel steering angle sensor, smooth motor position control can be realized.
SEGAWA AKIRA
ISHIDA AKIRA
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