The Study of the Real Time Identification and Control for The Nonlinear System

1 .自适应模态参数识别方法在旋转轴故障诊断中的应用为了对悬臂转子旋转机械进行故障诊断，本文提出了一种自适应模态参数识别方法，该方法能够识别出悬臂转子系统中与良好激励频率相对应的模态参数，并通过仿真验证了该方法对含噪声和时变信号的有效性。其次，它已被证实，该方法可以自适应地识别良好的激励频率分量和ODS在实际满意的精度水平。因此，本研究中所采用的方法可以基于ODS进行状态监测，并利用激励频率信息对结构进行诊断。2.谐波和共振分量的同时跟踪本研究的目的是利用卡尔曼滤波和Vold-Kalman滤波同时跟踪旋转机械中的谐波和共振分量。并进行了实验研究 ...更多信息 艾德使用旋转机械来验证该阶次跟踪装置能够解耦接近阶次和交叉阶次，例如旋转机械中的谐波和谐振分量。在旋转频率扫过其固有频率的情况下测量位移响应。频率和振幅估计从这个响应数据与卡尔曼滤波和Vold-Kalman滤波。在实验中，验证了这种阶次跟踪方法能够同时对旋转机械中的谐波和共振分量进行解耦和跟踪。3.基于增益调度型变超平面的力控制滑模控制器针对伺服系统提出了一种新型的具有时变超平面的滑模控制器。该超平面相对于在真实的时间中识别的环境的刚度连续地改变。与所提出的控制器，力控制可以稳定地进行，而无需在高级阶段的环境刚度的变化的信息。少

1 .Diagnosis for Rotating Shaft Using Adaptive Modal Parameter Identification MethodIn order to make a diagnosis of a rotating machinery with an overhung rotor, we propose an adaptive modal parameter identification method which identify the ODSs corresponds to the well excited frequencies.At first, the effectiveness of this method for the signal including noise and time varying signal has been proved in simulation stage. Next it has been confirmed that this method can adaptively identify the well excited frequency components and ODSs in practically satisfied precision level. Consequently the method we use in this study can perform condition monitoring based on ODSs and diagnose the structure by using information of the well excited frequency.2.Simultaneous Tracking of Harmonic and Resonance ComponentsThe purpose of this study is to track harmonic and resonance components in rotating machinery simultaneously using Kalman Filter and Vold-Kalman Filter. Experimental study was also perform … More ed using a rotating machinery in order to verify that this order tracking means was able to decouple close and crossing order such as harmonic and resonance components in a rotating machinery. Displacement response was measured while rotational frequency was sweeped over its natural frequency. Frequencies and amplitudes were estimated from this response data with Kalman Filter and Vold-Kalman Filter. In this experiment, this order tracking method was verified to capable of decoupling and tracking simultaneously harmonic and resonance components in a rotating machinery.3.Sliding Mode Controller with Gain scheduling Type Variable Hyperplane for Force Controlwe have proposed a new types of sliding mode controller with a time-varying hyperplane for the servo system. This hyperplane is continuously changes with respect to the stiffness of the environment identified in real time. With the proposed controller, force control can be stably performed without information on changes in the environmental stiffness in an advanced stage. Less