单输入单输出系统故障检测中匹配混沌激励的设计

摘要

In this paper, for the fault detection of a single-input single-output (SISO) system, we define a concept of matching chaotic stimulation with a measured system, establish a criterion of matching chaotic stimulation with a measured system, and propose a method of adjusting the matching of chaotic stimulation with a measured system. Finally, the improved prediction error is used to detect faults in the SISO system. The simulation results show that matched chaotic stimulation can be used to detect faults effectively, while unmatched ones can add uncertainty into the fault detection.%针对单输入单输出系统故障检测定义了混沌激励与被测系统匹配的概念，建立了混沌激励与被测系统匹配的标准，提出了调整混沌激励与被测系统匹配的方法。利用改进的预测误差实现了对单输入单输出系统的故障检测。仿真结果表明，匹配混沌激励能够对被测系统故障进行有效检测，而不匹配混沌激励对被测系统进行故障检测时存在不确定性。