MOTOR DRIVER OF A MOTOR-DRIVEN POWER STEERING SYSTEM, CAPABLE OF DRIVING NORMALLY A MOTOR WITH A MALFUNCTION OF ONE OF THE SWITCHING MODULES FOR AN INVERTER

摘要

PURPOSE: A motor driver of a motor-driven power steering system is provided to continuously control a motor by driving normally the motor with a malfunction of the switch of one phase.;CONSTITUTION: A motor driver of a motor-driven power steering system comprises a sensor(10), a neutral point driving element(20), and a control unit(30). The sensor senses the malfunction of an A-phase switching module(A), a B-phase switching module(B), and a C-phase switching module(C) in an inverter. The neutral point driving element is connected to the neutral point of a motor for adjusting the phase of the motor. The control unit controls the phase of the motor using the neutral point driving element and a switching module in a normal state according to the detection of the sensor.;COPYRIGHT KIPO 2013;[Reference numerals] (10) Sensor; (30) Control unit