论文部分内容阅读
在构建的以压电陶瓷为执行器、电阻式应变片为传感器的挠性悬臂梁物理实验系统基础上 ,优化设计多正弦辨识输入信号 ,利用频域极大似然法辨识得到了整个系统的数学模型 ,并根据该模型进行了数字和物理控制仿真 ,验证了模型的有效性 .良好的控制效果表明 :对于挠性结构 ,频域极大似然法是一种有效的模型辨识方法
Based on the constructed flexible cantilever physical experiment system with piezoelectric ceramic as actuator and strain gage as sensor, the multi-sinusoidal input signal is optimized and the whole system is identified by the frequency-domain maximum likelihood method Mathematical model and numerical and physical control simulation based on the model to verify the validity of the model.The good control effect shows that for the flexible structure, the frequency-domain maximum likelihood method is an effective model identification method