基于传递路径的整车制动抖动试验分析
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摘要
为了在实车上客观评估制动抖动的强度,在制动抖动传递路径的理论基础上确认振动传感器的实车布置方案并进行相关的整车测试,对测量的数据信号进行时域、频率和阶次分析。基于数据处理分析的结果可以证实制动抖动的整车试验方案是可行的,制动抖动会向制动踏板、车身底板和转向盘进行传递且转向盘处的振动强度明显高于制动踏板和车身地板。随后选取转向盘Y向的振动强度作为考核指标,分析了制动盘的初始制动温度、厚薄差及测试速度对整车制动抖动的影响。
To objective evaluate brake judder intensity of vehicle level test. Fix vibration sensors package scheme based on vibration transfer path theory and execute relevant vehicle level brake judder test. And then execute time, frequency and order analysis for raw data. The data processing result approve that vehicle level brake judder test scheme is reliable. Brake judder will transfer to brake pedal, body rail and steering wheel and vibration intensity is highest of steering wheel. Finally, study the brake rotor temperature, Disc thickness, and vehicle test speed influence factors based on steering wheel Y axis vibration.
To objective evaluate brake judder intensity of vehicle level test. Fix vibration sensors package scheme based on vibration transfer path theory and execute relevant vehicle level brake judder test. And then execute time, frequency and order analysis for raw data. The data processing result approve that vehicle level brake judder test scheme is reliable. Brake judder will transfer to brake pedal, body rail and steering wheel and vibration intensity is highest of steering wheel. Finally, study the brake rotor temperature, Disc thickness, and vehicle test speed influence factors based on steering wheel Y axis vibration.
引文
[1]余卓平,尹东晓,张立军,宁国宝.盘式制动器制动抖动问题概述[J].汽车工程,2005,27(3):372-376.
[2]Jacobsson H,Aspects of Disc Brake Judder.Proc.Instit Mech.Engi Vol.217 Part D;[J].Automobile Engineering.2003,217(6):419-430.
[3]Jacobsson H,Analysis of Brake Judder by Use of Amplitude Functions.SAE Paper 1999-01-1779.
[4]Jacobsson H,Disc Brake Judder Considering Instantaneous Disc Thickness and Spatial Friction Variation.Proc.Instit Mech.Engi,Vol.217 Part D;[J].Automobile Engineering,2003,217(5):325-342.
[5]孟宪皆、吴光强,汽车制动盘和摩擦片振动的数值解[J].江苏大学学报,2011,23(3):292-296.
[6]李莉、尹东晓、张立军,盘式制动器制动抖动现象机理研究[J].汽车工程,2006 28(4):361-365
[7]李运超、吴光强、盛云,盘式制动器制动抖动研究综述[J].噪声与振动控制.2008,(5):6-9.
[8]宁国宝、张立军、尹东晓、余卓平,制动盘端面跳动引起制动力矩波动的建模分析[J].同济大学学报(自然科学版),2006,34(8):1094-1097.
[9]Lab view STFT help document[S].
[10]尹东晓、张立军、宁国宝、余卓平.制动力矩波动台架试验研究[J].振动、测试与诊断,2005,25(2):117-121.
[2]Jacobsson H,Aspects of Disc Brake Judder.Proc.Instit Mech.Engi Vol.217 Part D;[J].Automobile Engineering.2003,217(6):419-430.
[3]Jacobsson H,Analysis of Brake Judder by Use of Amplitude Functions.SAE Paper 1999-01-1779.
[4]Jacobsson H,Disc Brake Judder Considering Instantaneous Disc Thickness and Spatial Friction Variation.Proc.Instit Mech.Engi,Vol.217 Part D;[J].Automobile Engineering,2003,217(5):325-342.
[5]孟宪皆、吴光强,汽车制动盘和摩擦片振动的数值解[J].江苏大学学报,2011,23(3):292-296.
[6]李莉、尹东晓、张立军,盘式制动器制动抖动现象机理研究[J].汽车工程,2006 28(4):361-365
[7]李运超、吴光强、盛云,盘式制动器制动抖动研究综述[J].噪声与振动控制.2008,(5):6-9.
[8]宁国宝、张立军、尹东晓、余卓平,制动盘端面跳动引起制动力矩波动的建模分析[J].同济大学学报(自然科学版),2006,34(8):1094-1097.
[9]Lab view STFT help document[S].
[10]尹东晓、张立军、宁国宝、余卓平.制动力矩波动台架试验研究[J].振动、测试与诊断,2005,25(2):117-121.