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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。
In order to make the application of unknown input observer wider, a method to solve the linear correlation problem of object measurement output during the design of unknown input observer (UIO) is proposed. Through the linear correlation analysis of the measurement output, the measurement outputs can be reasonably grouped so that each group contains part of the linearly independent of the measurement output and ensure that these groups cover all the measurement output sensor needs diagnosis; in this way to meet the design UIO existing conditions, and on this basis for different groups to design UIO for sensor fault diagnosis algorithm design. For a project example, the sensor fault diagnosis design using UIO verifies the feasibility of this method.