【摘要】 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更多还原

【Abstract】 Based on the cantilever beam physical system with piezoelectric ceramics as actuator and resistance strain gauge as sensor, the model of the system is identified with the optimized multi sine identification input signal and the frequency domain maximum likelihood method. Digital and physical control simulation is made, which validates the identified model. Good vibration suppression effects show that the maximum likelihood estimator is effective for identification of the flexible structure.更多还原