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An Experimental and Theoretical Study on the Vehicle Brake Judder
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 17, 2012 by SAE International in United States
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In this paper, vibrations caused by brake judder are investigated theoretically and experimentally, in a vehicle. The experimental results of a road test are compared with the theoretical results obtained from a simplified model of the transfer path between the brake system and the steering wheel.
Two accelerometers are used in order to measure the vibrations observed by the driver on the brake pedal and the steering wheel. The acquired signals are analyzed through waterfall analysis during the braking procedure. On the other hand, a similar condition is simulated by using a simplified model of transfer path between the brake disc and the steering wheel. Finally, a qualitative comparison is made between the results of simulations and experiments.
The results show that both natural frequencies of the transfer path are observed in the experiments as well as simulations. The first two orders of the wheel are the dominant vibrations as stated in the literature. The vibration signal of the brake pedal has similar components to the steering wheel, except for showing lower vibration amplitudes in the natural frequencies of the transfer path.
|Ground Vehicle Standard||Automotive Brake Noise and Vibration Standard Nomenclature|
|Journal Article||Systematic Brake Development Process and Optimized Robust Design of Front Axle Kinematics in Order to Reduce Oscillation Sensitivity|
|Technical Paper||Brake Pedal Feel Control Model|
CitationHajnayeb, A., Baghi Abadi, M., and Hosseingholizadeh, A., "An Experimental and Theoretical Study on the Vehicle Brake Judder," SAE Technical Paper 2012-01-1820, 2012, https://doi.org/10.4271/2012-01-1820.
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