A Prognostics Model to Predict Brake Rotor Thickness Variation

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Published Sep 22, 2019
Hamed Kazemi Xinyu Du Samba Drame Regan Dixon Hossein Sadjadi

Abstract

Brake rotor thickness variation causes brake torque variation which can lead to brake judder and pulsation, steering wheel oscillations and chassis vibration. In this paper, we have proposed a prognostics methodology to predict the degradation level of brake rotor due to disc thickness variation. Leveraging the time and frequency domain analysis, this model creates health indicators to assess the health of the rotor and predict the rotor thickness variations of 36 micrometers or more. These health indicators that are calculated during braking events include: (i) envelope or variance of the brake master cylinder pressure (MCP); (ii) envelope or variance of the longitudinal acceleration (AX); (iii) the root mean square amplitude of the average order spectrum of the MCP at order one; and (iv) the root mean square amplitude of the average order spectrum of the AX at order one. This paper demonstrates that the above health indicators are significantly larger for a degraded brake rotor due to thickness variation compared to a healthy rotor.

How to Cite

Kazemi, H., Du, X., Drame, S., Dixon, R., & Sadjadi, H. (2019). A Prognostics Model to Predict Brake Rotor Thickness Variation. Annual Conference of the PHM Society, 11(1). https://doi.org/10.36001/phmconf.2019.v11i1.796
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Keywords

Prognostics, Vehicle Health Management, Brake Rotors, Rotor Thickness Variation, Disc Thickness Variation, Health Indicator, Fault Injection, Fault Detection, Fault Isolation, prognostics and health management, Health Management, Rotor Degradation, Rotor Health Stage, Remaining Useful Life, RUL, Order Analysis

Section
Technical Research Papers

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