论文部分内容阅读
研究了在未知持续激励下结构振动主动控制系统的状态观测与传感器故障的在线检测。根据采用传感器的不同，提出了采用位移或速度传感器和加速度传感器两种情况下状态观测器的设计方法，并以此为基础，进一步提出了以观测器输出和传感器测量之差与观测器输出的比值作为表征传感器故障的参量，通过均值检验与概率检验来判定传感器故障及其类型的传感器故障在线检测方法。最后，以某型号直升机机身减振为例，验证了所提出方法的正确性。
The state observation and sensor fault detection of active vibration control system under unknown continuous excitation are studied. According to the difference of sensors, the design method of state observer under two kinds of displacement or speed sensor and acceleration sensor is put forward. Based on this, the method of observing the difference between the output of the observer and the sensor and the output of the observer Ratio as a parameter to characterize the sensor fault, and determine the sensor fault and its type online fault detection method by mean value test and probability test. Finally, taking a model helicopter body vibration damping as an example, the correctness of the proposed method is verified.