大型结构小增益分散稳定化容错控制研究

发布时间：2018-01-10 09:27

  本文关键词：大型结构小增益分散稳定化容错控制研究　出处：《工程力学》2017年06期 　论文类型：期刊论文

  更多相关文章： 分散控制 容错控制 小增益 稳定化 完整性 LMI

【摘要】：针对大型土木工程结构,研究了具有完整性的小增益分散稳定化容错控制问题,考虑子控制系统关联项及系统中传感器与作动器出现故障的情况,利用Lyapunov稳定性理论及线性矩阵不等式方法,给出了离散时滞关联系统分散镇定的充分条件,并证明了该条件等价于一组线性矩阵不等式的可行性问题。进而,通过建立和求解一个凸优化问题,提出了具有完整性的小反馈增益参数分散稳定化容错状态反馈控制律的设计方法,所得到的子系统控制器能保持全局渐进稳定。针对ASCE 9层benchmark模型,该文分别从部分独立分散控制和重叠分散控制角度研究分析了正常工况、传感器失效、作动器失效及传感器作动器均失效工况的分散控制设计与数值分析。结果表明,该文提出的小增益分散稳定化控制(LMI-SGDSC)算法能获得与集中控制策略接近的控制效果,且无需更多的控制能量;相对于集中控制,重叠分散控制系统具有更高的可靠性;在发生故障时,具有完整性的分散稳定化容错控制(LMI-SGFTDSC)具有较好的控制效果。
[Abstract]:For large civil engineering structures, the small gain with the integrity of the decentralized control problem of fault-tolerant stabilization, considering the sensor control system and related system with actuator fault conditions, using the method of Lyapunov stability theory and linear matrix inequality, a sufficient condition for decentralized stabilization for discrete time-delay systems is given and proved related. The feasibility of this condition is equivalent to a set of linear matrix inequalities. Then, by establishing and solving a convex optimization problem, put forward with the integrity of the small feedback gain parameter design method of decentralized control law for stabilizing state feedback fault-tolerant subsystem, the proposed controller can maintain global asymptotic stability. According to ASCE 9 the benchmark model, this paper respectively from the part of the independent decentralized control and overlap control perspective to analyze normal dispersion conditions, sensor failure, actuator Sensor failure and dispersion analysis design and numerical control actuator failure conditions. The results show that the decentralized stabilization control of small gain of the proposed (LMI-SGDSC) algorithm can achieve centralized control strategy and control effect of close, and there is no need to control more energy; relative to the centralized control, overlapping decentralized control system is reliable higher; in the event of failure, the decentralized stabilization of fault tolerant control possessing integrity (LMI-SGFTDSC) has a good control effect.

【作者单位】： 湖南大学土木工程学院;广州大学工程抗震研究中心;
【基金】：国家973项目(2012BAJ07B02) 国家自然科学基金项目(97315301-07,51408142) 教育部创新团队项目(IRT13057)
【分类号】：TP273;TU311.3
【正文快照】： 主动、半主动和智能振动控制技术可以有效减小建筑结构在地震或风荷载作用下的振动响应[1 2]。然而,对于大型结构,传统集中控制将使得整个控制系统信息交换异常复杂且极易造成滞后,从而导致控制系统集成和运行成本提高,系统的可靠性降低[3];另外,一旦个别传感器或作动器发生，

本文编号：1404734