电动助力转向系统模块解决方案

Release time:2018-11-27
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source:Ameya360
reading:1752

1、 前言

电动助力转向系统(Electric Power Steering,缩写 EPS)是一种直接依靠电机提供辅助扭矩的动力转向系统,与传统的液压助力转向系统 HPS(Hydraulic Power Steering)相比,EPS 系统具有很多优点。EPS 主要由扭矩传感器、车速传感器、电动机、减速机构和电子控制单元(ECU)等组成。

电动助力转向系统模块解决方案

我们常见的助力转向有机械液压助力、电子液压助力、电动助力三种。使用大而宽的轮胎以及前轴载荷(整车载荷)增加、转向时需要较大的力、人没有转动的力 ,所以为了改善驾驶人的操控性,很有必要增加辅助转向机构。

2、 方案概述

Ameya360 电动助力转向系统模块解决方案将转矩传感器与转向轴(小齿轮轴)连接在一起,当转向轴转动时,转矩传感器开始工作,把输入轴和输出轴在扭杆作用下产生的相对转动角位移变成电信号传给 ECU,ECU 根据车速传感器和转矩传感器的信号决定电动机的旋转方向和助力电流的大小,从而完成实时控制助力转向。因此它可以很容易地实现在车速不同时提供电动机不同的助力效果,保证汽车在低速转向行驶时轻便灵活,高速转向行驶时稳定可靠。

电动助力转向系统模块解决方案

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