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A hybrid control approach is proposed to achieve the desired performance. Firstly a robustinput shaper is designed to reduce the transient vibration and residual vibration of the containerefficiently. Then a simple fuzzy logic controller is designed to eliminate the residual vibrationcompletely in order to guarantee the positioning precision. Such a hybrid approach is simple instructure and readily realizable. Simulation results verify the fine performance of this hybrid controlapproach. It can achieve perfect elimination of residual vibration and concise positioning of thecontainer load, and it is robust to parameter variations (mainly for cable length) and externaldisturbances.
A simple control algorithm is designed to reduce the transient vibration and residual vibration of the containerefficiently. Then a simple fuzzy logic controller is designed to eliminate the residual vibrationcompletely in order to guarantee the positioning precision Such a hybrid approach is simple instructure and readily realizable. Simulation results verify the fine performance of this hybrid controlapproach. It can achieve perfect elimination of residual vibration and concise positioning of thecontainer load, and it is robust to parameter variations ) and externaldisturbances.