| 제목 |
EPB 시스템의 센서 고장 허용 제어 기법 |
| 분야 |
전기ㆍ전자ㆍ통신 |
| 언어 |
Korean |
| 저자 |
이원구(한양대학교), 이영옥(한양대학교), 장민석(한양대학교), 이충우(한양대학교), 정정주(한양대학교), 정한별(만도) |
| Key Words |
EPB(전자 제어식 주차 브레이크 시스템), Fault tolerant control(고장 허용 제어), Fault detection(고장 검출), Force estimation(힘 추정), Clamp force(제동력) |
| 초록 |
In this paper, a fault tolerant control against sensor faults of electric parking brake (EPB) is proposed. Fault tolerant control method of EPB system is strongly demanded since sensor faults can endanger a driver's safety. In this paper, a clamp force estimation method is presented using motor's armature current and angular velocity. Clamp force estimation method is applied for fault detection method with parity equations. The goal of the detection method is to detect and identify faults in encoder, current sensor, force sensor, and parking cable. And a switching logic for fault tolerant control against the three sensor faults is suggested. Experimental results show that the proposed force estimation method satisfies the specifications of EPB system. The effectiveness of the fault detection method is validated with experimental results. Although a single sensor fault happens, EPB system with the proposed fault detection method does not develop into a failure on subsystem or system level. |
| 원문(PDF) |
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