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http://dx.doi.org/10.7467/KSAE.2015.23.5.553

A Study on Prevention of Secondary Collision considering Failure of Brake Actuator  

Yang, Heecheol (Graduate School of Automotive Engineering, Kookmin University)
Kim, Dooyong (Graduate School of Automotive Engineering, Kookmin University)
Kang, Taewan (Graduate School of Automotive Engineering, Kookmin University)
Soh, Minwoo (Graduate School of Automotive Engineering, Kookmin University)
Kwon, Jaejoon (Graduate School of Automotive Engineering, Kookmin University)
Park, Kihong (Department of Automotive Engineering, Kookmin University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.23, no.5, 2015 , pp. 553-563 More about this Journal
Abstract
Reportedly the fatality rate from secondary collision is six times higher than the average fatality rate from all traffic accidents. So prevention of the secondary collision is attracting significant attention from automotive industries. However, the secondary collision prevention systems that have been developed are not considering possibility of brake actuator failure that can occur by the impact during the initial collision. In this paper, a new system has been developed that could prevent secondary collision even in case of brake actuator failure by taking advantage of still operating actuators. In this system, a steering control is performed for maintaining a lane by using linear quadratic regulator. Additionally, the system attempts differential brake control with the remaining braking capability to stop the vehicle in the shortest distance. Through simulation in various collision scenarios, the system has demonstrated significant potential of preventing secondary collision that could otherwise have resulted in severe fatality.
Keywords
Secondary collision; Rear-end collision; Differential braking; Friction circle; Dugoff tire model;
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