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Fault Tolerant Control of Sensor Fault of EPB System  

Lee, Won-Goo (Department of Electrical Engineering, Hanyang University)
Lee, Young-Ok (Department of Electrical Engineering, Hanyang University)
Jang, Min-Seok (Department of Electrical Engineering, Hanyang University)
Lee, Choong-Woo (Department of Electrical Engineering, Hanyang University)
Chung, Chung-Choo (Division of Electrical and Biomedical Engineering, Hanyang University)
Chung, Han-Byul (MANDO Corporation, Central R&D Center)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.18, no.4, 2010 , pp. 8-17 More about this Journal
Abstract
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.
Keywords
EPB; Fault tolerant control; Fault detection; Force estimation; Clamp force;
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Times Cited By KSCI : 2  (Citation Analysis)
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