Real-time Multi-task Scheduling Method Research And Applications

Due to the development of computer and atuocontrol,real-time system also be applied to avitation, astronautics and navigation widely.Real-time scheduling is the core question of real-time system and so on becomes a hot research in modern industry and military.The mostly work of the paper is summarized as follows:1. According to the characteristic of real-time system, real-time scheduling is researched from theory deeply,and given the parameter of evaluation of real-time scheduling algorithm.2. On the basic of the previous fruit, static and dynamic scheduling algorithm scheduling which are the two main type algorithms of real-time scheduling are discussed separately on the kind of single processor and multiprocessor, and given the scheduling model of task and the condition.Through the C++ program to describe these algorithms,and the advantage,defect and suitable condition of them are compared, so that to find the fittest algorithm according to the needs of practice.3. Because the research of majority real-time scheduling is limited only to the simple system, and the complex real-time multitask system is researched very little.According to these question, static and dynamic scheduling algorithms of real-time multitask are discussed emphasis in this paper, and given the fittest scheduling algorithm of the multiprocessors to the complex multitask system. And applied these algorithms to the multitask model of underwater vehicle control and guidance system.4. In order to enhance the reliability of the real-time system, adopted the technique of real-time scheduling and Fault-tolerant scheduling combined to the system, and the fault-tolerant scheduling algorithm be introduced with emphsis. And used C++ to programme, simulate and compare.Finally, in order to apply research and proof the algorithm much more.and applied the real-time scheduling algorithm to complex practical system truly. This paper introduces the frame and function of underwater vehicle control and guidance hardware-in-the-loop simulation system in detail, which actor as the test flat, through...