Abstract
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.
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The project was 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 (09ZZ17), the Specialized Research Fund for the Doctoral Program of Higher Education of China (20070248032) and the Research Project of State Key Laboratory of Ocean Engineering of China (GKZD010807).
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Cai, G., Teng, Y. & Lim, C.W. Active control and experiment study of a flexible hub-beam system. Acta Mech Sin 26, 289–298 (2010). https://doi.org/10.1007/s10409-009-0312-0
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DOI: https://doi.org/10.1007/s10409-009-0312-0