多自由度体系非线性振动控制装置失效的拟力法-多市场机制研究

发布时间：2018-04-03 23:56

本文选题：多自由度体系　切入点：半主动控制　出处：《建筑结构学报》2017年01期

【摘要】：随着结构自由度的增多,控制信息量大幅度增加,控制系统的失效概率将增大。集中式控制策略存在明显的不足,分散控制已成为研究的热点。基于市场机制控制(market-based control,MBC)理论作为一种典型的基于非经典信息的控制方法,只需离散层的信息,属于分布式控制。拟力法(force analogy method,FAM)作为一种弹塑性结构动力分析方法,具有计算速度快,存储空间小等优点。将拟力法与多市场机制控制(multi-MBC,MMBC)策略相结合,可以高效地求解结构非线性控制问题。基于拟力法基本理论,构造了对数供需函数模型,提出了非线性MMBC分散控制器的设计方法。数值分析表明,设计的非线性MBC分散控制器可以取得很好的控制效果,在控制装置失效时,非线性MBC控制策略具有较强的自适应性;并且可以通过价格机制实时对结构进行最优控制,具有较强的鲁棒性。
[Abstract]:With the increase of the degree of freedom of the structure, the amount of control information increases greatly, and the failure probability of the control system increases.Centralized control strategy has obvious shortcomings, decentralized control has become a hot spot.As a typical control method based on non-classical information, the theory of market-based control based on market mechanism only needs discrete layer information and belongs to distributed control.As a dynamic analysis method for elastic-plastic structures, the pseudo-force analogy method (FAM) has the advantages of fast calculation speed and small storage space.By combining the quasi-force method with the multi-market mechanism control strategy, the structural nonlinear control problem can be solved efficiently.Based on the basic theory of quasi force method, the logarithmic supply and demand function model is constructed, and the design method of nonlinear MMBC decentralized controller is presented.Numerical analysis shows that the designed nonlinear MBC decentralized controller can achieve good control effect. When the control device fails, the nonlinear MBC control strategy has strong adaptability.And the structure can be controlled in real time by price mechanism, so it has strong robustness.
【作者单位】：沈阳建筑大学土木工程学院;大连理工大学辽宁大连辽宁工程防灾减灾协同创新中心;
【基金】：国家自然科学基金重大国际合作项目(51261120375),国家自然科学基金创新研究群体项目(51121005) 国家重点基础研究计划(973计划)(2011CB013605)
【分类号】：TU311.3

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