Journal of the Korea Society of Computer and Information (한국컴퓨터정보학회논문지)

Korean Society of Computer Information (한국컴퓨터정보학회)
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Performance Tradeoff Between Control Period and Delay: Lane Keeping Assist System Case Study

  • Cha, Hyun-Jun (Graduate School of Automotive Engineering, Kookmin University) ;
  • Park, Seong-Woo (Department of Computer Science, Kookmin University) ;
  • Jeong, Woo-Hyuk (Department of Computer Science, Kookmin University) ;
  • Kim, Jong-Chan (Graduate School of Automotive Engineering, Kookmin University)
  • Received : 2015.10.24
  • Accepted : 2015.11.10
  • Published : 2015.11.30
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Abstract

In this paper, we propose a performance-aware workload model for efficient implementation of control systems. When implementing a control algorithm as an embedded computer system, the control code executes periodically. For such systems, its control performance depends on not only the accuracy of the control algorithm itself but also temporal parameters such as control period and sensing to actuation delay. In this regard, this paper studies the relation between control period and delay by measuring and analyzing the control performance of LKAS (Lane Keeping Assist System) with varying period and delay combinations. Through this experimental study, this paper shows that the two timing parameters, i.e.,control period and delay, has a tradeoff relation in terms of control performance.

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