Motor-driven power steering control system

摘要

A motor-driven power steering control system comprises desired current determining means for determining previously a desired value of a current to be supplied to a motor, motor current detecting means for detecting said motor current. Alternatively, the system comprises motor current control means having a first control process for performing a closed loop control of the motor current to be supplied to said motor by using at least a proportional term and an integral term of the control process on the basis of said detected motor current and said desired value and a second control process for performing a closed loop control by using said proportional term on the basis of said detected motor current and said desired value; or desired voltage determining means for determining a desired value of an application voltage to be applied to said motor, and motor current control means having a first control process for performing a closed loop control of a motor current to be supplied to said motor in accordance with a desired value of the current to be supplied to said motor and said detected motor current and a second control process for controlling the voltage applied to the motor on the basis of the desired value of said application voltage.