公开(公告)号：US20160001813A1

公开(公告)日：2016-01-07

申请号：US14857882

申请日：2015-09-18

Applicant: NSK LTD.

Inventor： Satoh KOUICHI ,  Keiji KASHIMOTO ,  Haruhiko KAMIGUCHI

IPC: B62D5/04

CPC classification number: B62D5/0463 ,  B62D5/0421 ,  B62D5/0469 ,  B62D5/0481 ,  B62D5/0496 ,  H02P6/28 ,  H02P29/028 ,  H02P29/032

Abstract: An electric power steering apparatus for generating a PWM signal based on a calculated steering assist command value, PWM-controlling a motor via a motor drive circuit including switching elements, and assist-controlling a steering system that a motor relay is inserted between the motor drive circuit and the motor, comprises a steering status detecting section that detects a steering status of a steering wheel, outputs a longtime steering holding signal when detecting that the steering status is a longtime steering holding status, and outputs a normal steering signal when detecting that the steering status is a normal steering status, and a motor current control section that determines a motor current control value for controlling a motor current flowing in the motor relay in accordance with the longtime steering holding signal or the normal steering signal.

Abstract translation: 一种电动助力转向装置，用于基于计算出的转向辅助指令值产生PWM信号，经由包括开关元件的电动机驱动电路对电动机进行PWM控制，以及辅助控制电动机继电器插入电动机驱动 电路和电动机包括检测方向盘的转向状态的转向状态检测部，当检测到转向状态为长时间转向保持状态时输出长时间转向保持信号，并且当检测到转向状态时，输出正常转向信号 转向状态是正常的转向状态，以及电动机电流控制部，其根据长时间的转向保持信号或正常的转向信号，确定用于控制在电动机继电器中流动的电动机电流的电动机电流控制值。