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对于建筑结构主动控制系统,传感器或执行器在实际工程中可能会出现故障而失效,这将严重影响结构的减震效果。针对AMD建筑结构系统传感器出现故障的情况,基于AMD建筑结构模型,提出建筑结构主动控制系统的故障诊断与隔离技术(fault detection and isolation,FDI),设计基于容错控制技术(fault tolerant control,FTC)的主动容错控制器。将FDI和FTC的设计过程转化为H∞控制问题,利用变量替换法推导线性矩阵不等式(linear matrixinequality,LMI)凸约束,通过LMI算法解算出结果。最后通过带有AMD装置的三层框架结构数值算例,考虑位移传感器出现故障而失效,应用故障检测隔离技术,设计容错控制器,并且验证故障检测隔离技术和容错控制的有效性。
For the active control system of building structure, sensors or actuators may fail in practical engineering, which will seriously affect the damping effect of the structure. Aiming at the fault of AMD building system sensor, based on AMD building structure model, fault detection and isolation (FDI) of active control system of building structure is proposed. Fault tolerant control (FTC) Active fault-tolerant controller. The design process of FDI and FTC is transformed into the H∞ control problem. The linear matrix inequality (LMI) convex constraint is deduced by the variable substitution method, and the result is calculated by LMI algorithm. Finally, numerical examples of the three-tier frame structure with AMD device are taken into account, and the failure of the displacement sensor is considered. Fault detection and isolation technology is applied to design fault-tolerant controller. The effectiveness of fault detection and isolation technology and fault-tolerant control is verified.