Active control and experiment study of a flexible hub-beam system  

作　　者：Guoping Cai Youyou Teng C. W. Lira 

机构地区：[1]Department of Engineering Mechanics, State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, 200240 Shanghai, China [2]Department of Building and Construction, City Universityof Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China

出　　处：《Acta Mechanica Sinica》2010年第2期289-298,共10页力学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(10772112 and 10472065);the Key Project of Ministry of Education of China(107043);the Key Scientific Project of Shanghai Municipal Education Commission(09ZZ 17);the Specialized Research Fund for the Doctoral Program of Higher Education of China(20070248032);the Research Project of State Key Laboratory of Ocean Engineering of China(GKZD010807)

摘　　要：The first-order approximation coupling （FOAC） model was proposed recently for dynamics and control of flexible hub-beam systems. This model may deal with system dynamics for both low and high rotation speed, while the classical zeroth-order approximation coupling （ZOAC） model is only available for low rotation speed. This paper assumes the FOAC model to present experimental study of active positioning control of a flexible hub-beam system. Linearization and nonlinear control strategies are both considered. An experiment system based on a DSP TMS320F2812 board is introduced. The difference between linearization and nonlinear control strategies are studied both numerically and experimentally. Simulation and experimental results indicate that, linearized controller can make the system reach an expected position with suppressed vibration of flexible beam, but the time taken to position is longer than expected, whereas nonlinear controller works well with precise positioning, suppression of vibration and time control.The first-order approximation coupling （FOAC） model was proposed recently for dynamics and control of flexible hub-beam systems. This model may deal with system dynamics for both low and high rotation speed, while the classical zeroth-order approximation coupling （ZOAC） model is only available for low rotation speed. This paper assumes the FOAC model to present experimental study of active positioning control of a flexible hub-beam system. Linearization and nonlinear control strategies are both considered. An experiment system based on a DSP TMS320F2812 board is introduced. The difference between linearization and nonlinear control strategies are studied both numerically and experimentally. Simulation and experimental results indicate that, linearized controller can make the system reach an expected position with suppressed vibration of flexible beam, but the time taken to position is longer than expected, whereas nonlinear controller works well with precise positioning, suppression of vibration and time control.

关 键 词：Flexible hub-beam system First-order approximation coupling （FOAC） model Linearizationcontrol Nonlinear control Experiment 

分 类 号：TN624[电子电信—电路与系统] N941.3[自然科学总论—系统科学]