| 海洋平台磁流变阻尼器控制技术研究 |
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| 引用本文： | 嵇春艳,万乐坤,尹群.海洋平台磁流变阻尼器控制技术研究[J].海洋工程,2008,26(3). |
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| 作者姓名： | 嵇春艳 万乐坤 尹群 |
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| 作者单位： | 江苏科技大学,船舶与海洋工程学院,江苏,镇江,212003 |
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| 摘 要： | 为了更有效地减小海洋平台动力响应,采用基于模糊控制算法的磁流变阻尼器对海洋平台的振动进行控制.以海洋平台位移响应误差和误差变化为输入变量,以最优控制力为输出变量,优化设计出模糊控制器.考虑实际磁流变阻尼器输出控制力上限存在限制,采用半主动控制算法计算接近于最优控制力的半主动控制力.以一固定式海洋平台为算例研究磁流变阻尼器的振动控制效果及其模糊性,仿真结果表明模糊磁流变控制器对于平台的振动可以实现非常有效的控制,且控制效果对结构阻尼和环境的不确定性具有较好的模糊性.
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| 关 键 词： | 磁流变阻尼器 模糊控制器 半主动控制 海洋平台 |
Study on magnetorheological fluid damper vibration control for offshore platforms based on fuzzy control strategy |
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| JI Chun-yan,WAN Le-kun,YIN Qun.Study on magnetorheological fluid damper vibration control for offshore platforms based on fuzzy control strategy[J].Ocean Engineering,2008,26(3). |
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| Authors: | JI Chun-yan WAN Le-kun YIN Qun |
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| Abstract: | In order to reduce the dynamic responses of offshore platforms more effecuively,a fuzzy magnetorheological fluid damper(MRFD) is adopted to control the vibration of offshore platforms in this paper.Taking the error of offshore platform displacement response and error variety as input,and the optimal control force as output,the optimal fuzzy controller is designed.Considering the limits for output force which is generated by MRFD,semi-active control strategy is used to revise the output control force,which approximates the optimal active control force calculated by the fuzzy control strategy.Finally a numerical example of a fixed offshore platform is utilized to investigate the effectiveness of the proposed method and its fuzziness.The simulation results show that vibration of offshore platforms by using fuzzy control method is reduced effectively.In addition,the proposed method has good fuzziness on uncertainty of structural damping and uncertainties of external load parameters. |
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| Keywords: | magnetorheological fluid damper fuzzy controller semi-active control offshore platform |
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