A Fuzzy Comprehensive Evaluation Method for Spacecraft Control Systems under Different Scheduling Strategies
Guangliang Yu, Guan Xin, Yang Mengfei · 2019
The spacecraft control system is a typical cyber-physical system (CPS). Its performance includes many aspects, such as control performance, real-time performance, resource utilization, system trustworthiness, and so on. These aspects are closely related to the scheduling strategy of system tasks. To select an optimized scheduling strategy, it is necessary to evaluate the performance of the spacecraft control system considering various factors. However, there is currently no effective method in this regard. In this paper, we propose a fuzzy comprehensive evaluation method to evaluate the performance of spacecraft control systems. Control, real-time and other aspects of performance under different scheduling strategies are taken into account. We first define time models, task models and scheduling models of spacecraft control systems. Then, we discuss the evaluation metrics and their membership functions, and finally give the implementation process of the method and demonstrate the method through an example. This work can be used for comprehensive performance evaluation of spacecraft control systems and other cyber-physical systems.