A real-time fault-tolerant scheduling algorithm with low dependability cost in on-board computer system |
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| Authors: | WANG Pei-dong WEI Zhen-hua |
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| Affiliation: | 1. College of Computer Science and Technology, Harbin University of Science and Technology, Harbin 150080, China
2. Dept. of Computer Science and Technology, North China Electric Power University, Beijing 102206, China |
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| Abstract: | To make the on-board computer system more dependable and real-time in a satellite, an algorithm of the fault-tolerant scheduling in the on-board computer system with high priority recovery is proposed in this paper. This algorithm can schedule the on-board fault-tolerant tasks in real time. Due to the use of dependability cost, the overhead of scheduling the fault-tolerant tasks can be reduced. The mechanism of the high priority recovery will improve the response to recovery tasks. The fault-tolerant scheduling model is presented simulation results validate the correctness and feasibility of the proposed algorithm. |
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| Keywords: | on-board computer system fault-tolerant scheduling dependability cost priority |
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