摘要
针对汽车制动时制动副间摩擦产生的制动尖叫问题,笔者搭建了汽车盘式制动器制动噪声实验台架,对制动尖叫进行了实验研究。测试了制动尖叫产生时的制动盘转速、制动压力、制动扭矩参数及噪声信号,并研究了一定初始转速下,制动盘和制动衬块之间摩擦系数随制动压力、制动副表面温度、转速及时间的变化关系。使用时域和频域方法分别对制动尖叫的声压信号进行分析,获得了其信号特征和频谱成分。本研究工作有助于理解和揭示汽车盘式制动器制动尖叫的产生机理。
Aimed at the squeal problem induced by friction between brake pair when vehicle brakes,a test bench for researching the noise of automotive disc brake is set up,and the experimental research on brake squeal is performed.The time history of some key parameters affecting brake squeal such as the rotational speed of brake disc,brake pressure,torque parameter,and the noise signal for brake squeal are tested.Based on these signals,the relations of the coefficient of friction between the brake disc and pads with the brake pressure,the temperature of surface of brake pair,rotational speed and time,are investigated for the specific initial speed.Time domain and frequency domain methods are used to analyze the sound pressure signal obtained from brake squeal,respectively,and the signal characteristics and spectral components are also researched.These efforts will be helpful for understanding and revealing the generation mechanism of automotive brake squeal.
出处
《振动．测试与诊断》
EI
CSCD
北大核心
2013年第5期746-750,907-908,共5页
Journal of Vibration,Measurement & Diagnosis
基金
国家自然科学基金资助项目(51275022)
汽车噪声振动和安全技术国家重点实验室基金资助项目(NVHSKL-201108)
