1种未知输入观测器的推广设计方法

为使未知输入观测器的应用范围更广,提出1种解决在未知输入观测器(UIO)设计过程中对象测量输出线性相关问题的方法。通过对测量输出的线性相关性分析,测量输出可以被合理分组,使得各组内包含部分互相线性无关的测量输出并且保证这些分组涵盖了所有需要诊断的测量输出传感器;以这种方式来满足设计UIO的存在条件,并在此基础上针对不同分组来设计UIO以进行关于传感器的故障诊断算法设计。针对1个工程实例,使用UIO进行传感器的故障诊断设计验证了该方法的可行性。

A Promoted Design Approach for Unknown Input Observer

This paper presents a promoted Unknown Input Observer (UIO) design approach to solve linear correlation problem while designing UIO. It is a generalized method in UIO designing. Through the linear correlation analysis of measurement output, the measured output can be reasonable grouping so that each group contains partially linearly independent output and ensure that these groups cover all the measurement output sensors that need to be diagnosed. Based on those conditions above, the existence condition of those UIOs are met and they were designed for different groups, those UIOs were used to carry out on the sensor fault diagnosis algorithm. Ultimately, a case study in aero engine has employed for confirming the feasibility of this new approach. It has been certificated that the new approach has extensively good engineering application result.