Robust Clamping Force Control of an Electro-Mechanical Brake System for Application to Commercial City Buses

Sangjune Eum, Jihun Choi, Sang-Shin Park, Changhee Yoo and Kanghyun Nam
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Sangjune Eum: Graduate School of Mechanical Engineering, Yeungnam University, Gyeongsan-si, Gyensangbuk-do 38541, Korea
Jihun Choi: Graduate School of Mechanical Engineering, Yeungnam University, Gyeongsan-si, Gyensangbuk-do 38541, Korea
Sang-Shin Park: Graduate School of Mechanical Engineering, Yeungnam University, Gyeongsan-si, Gyensangbuk-do 38541, Korea
Changhee Yoo: Advanced Development Team, Sangsin Brake Co., Ltd., Dalsung-gun, Daegu Metropolitan City 43023, Korea
Kanghyun Nam: Graduate School of Mechanical Engineering, Yeungnam University, Gyeongsan-si, Gyensangbuk-do 38541, Korea

Energies, 2017, vol. 10, issue 2, 1-12

Abstract: This paper proposes a sensor-less robust force control method for improving the control performance of an electro-mechanical brake (EMB) which is applicable to commercial city buses. The EMB generates the accurate clamping force commanded by a driver through an independent motor control at each wheel instead of using existing mechanical components. In general, an EMB undergoes parameter variation and a backdrivability problem. For this reason, the cascade control strategy (e.g., force-position cascade control structure) is proposed and the disturbance observer is employed to enhance control robustness against model variations. Additionally, this paper proposed the clamping force estimation method for a sensor-less control, i.e., the clamping force observer (CFO). Finally, in order to confirm the performance and effectiveness of a proposed robust control method, several experiments are performed and analyzed.

Keywords: electro-mechanical brake; disturbance observer; clamping force control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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