状态变量分析法在系统辨识中的应用  

Application of Analysis Method of State Variable in System Identification

作　　者：于连栋[1] 费业泰[1] 

机构地区：[1]合肥工业大学仪器仪表学院,合肥230009

出　　处：《中国机械工程》2004年第16期1472-1475,共4页China Mechanical Engineering

基　　金：国家自然科学基金(59735120);高等学校博士学科点专项科研基金(20000035905)

摘　　要：针对传统时域和频域系统辨识方法在动态测试系统描述中的不足,提出不依赖于系统输入和输出的状态变量分析方法。运用该方法对电感位移传感器动态测试系统进行建模,量化了传递函数的参数,并对模型的理论输出进行了求解。给出模型计算结果与实验结果的比较,结果表明,状态变量分析方法适用于复杂系统的建模,有助于对系统内部信息的了解。Aiming at the disadvantages of classical system identification methods of time—domain and frequency-domain in modeling on dynamic measurement system, analysis method of state variable which was independent on the system's inputs and outputs was presented. Employing this method, model on dynamic measurement system based on inductance displacement transducer was established. Coefficients of the transfer function were calculated, and the outputs of the model were solved. The calculated output results and experimental results had been compared. The results indicate that analysis method of state variable is useful for modeling the complex systems and helpful for understanding the information inside the systems.

关 键 词：状态变量 拉氏变换 传递函数 电感位移传感器 

分 类 号：TH113[机械工程—机械设计及理论]