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International Journal of Automotive Technology 2005;6(1): 71-77. |
| OPTIMAL PERIOD SELECTION TO MINIMIZE THE END-TO-END RESPONSE TIME |
| M. SUNWOO1, M. SHIN1, W. LEE2 |
1Hanyang University
2Changwon National University |
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| ABSTRACT |
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This paper presents a systematic approach which determines the optimal period to minimize performance measure subject to the schedulability constraints of a real-time control system by formulating the scheduling problem as an optimal problem. The performance measure is derived from the summation of end-to-end response times of processed I/Os scheduled by the static cyclic method. The schedulability constraint is specified in terms of allowable resource utilization. At first, a uniprocessor case is considered and then it is extended to a distributed system connected through a communication link, local-inter network, LIN. This approach is applied to the design of an automotive body control system in order to validate the feasibility through a real example. By using the approach, a set of optimal periods can easily be obtained without complex and advanced methods such as branch and bound (B&B) or simulated annealing. |
| Key Words:
End-to-end response time, LIN, Static cyclic schedule, Optimization |
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