Abstract

Disc brakes are widely used in various kinds of light vehicles. Currently, it has become a tendency to reduce mass and volume of the brake systems because of the increasing lightweight requirement for vehicles, especially for passenger vehicles in the populated cities and outdoor sport. However, there is often conflict between lightweight and reliability. In this paper, braking characteristics of a thin disc brake were investigated experimentally, using a self-developed inertia braking platform. The platform was designed to very conveniently measure multi-field characteristics in real-time. The goal of the experiment is to verify special performance of a brake system with a very thin solid disc. Measurements were implemented for transient temperature, lateral vibration, and noise in the dry friction contacts of a steel solid thin disc and two resin circular pads. And then, frequency-time analysis method was used for the lateral vibration of the disc and braking noise. The results suggest that one of the reasons causing the lateral vibration is the mounting error of the thin disc-shaft system, and should be of extra attention for safety. In addition, the braking noise is structural-borne.

摘要

盘式制动器广泛用于各种轻型车辆。当前，由于对车辆，特别是在人口稠密的城市和户外运动中的乘用车的轻量化需求的增加，减小制动系统的质量和体积的趋势已经成为趋势。但是，轻量级和可靠性之间经常存在冲突。本文使用自行开发的惯性制动平台，对薄盘制动器的制动特性进行了实验研究。该平台旨在非常方便地实时测量多场特性。实验的目的是验证具有非常薄的实心盘的制动系统的特殊性能。测量了瞬态温度，横向振动，坚固的钢制薄盘和两个树脂圆形垫片的干式摩擦接触中的噪音。然后，将频率-时间分析方法用于盘的横向振动和制动噪声。结果表明，引起侧向振动的原因之一是薄盘轴系统的安装误差，并且在安全方面应格外注意。此外，制动噪音是结构性的。