STEERING FORCE CONTROL DEVICE FOR POWER STEERING DEVICE

PURPOSE:To eliminate a handle torque sensor and a steering output torque sensor, by a method wherein based on information from a car speed sensor and a steering angle sensor, handle torque and steering output torque are computed, and based on the torque, control of steering is performed. CONSTITUTION:A car speed V and a steering angle theta, changed momentarily according to the running state of an automobile, is detected by a car speed sensor 40 and a steering angle sensor 45 to input the results to a resistor. After a car speed Va and a steering angle thetaa stored in the resistor, are read, a CPU 51 computes a handle torque TMa responding to the car speed Va and the steering angle thetaa from a characteristic map stored in an ROM 52. From a characteristic map stored in the ROM 52, a steering angle TSa responding to the car speed Va and the steering angle thetaa is computed. The CPU 51 computes a control current value, responding to the computed handle torque and steering output torque, from a characteristic map stored in the ROM 52. By means of a computed current value, a solenoid valve is controlled.