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arXiv 2012.05966eess.SYcs.SY
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具有ATMD的建筑物滑模控制器的整定算法

A tuning algorithm for a sliding mode controller of buildings with ATMD

Antonio Concha, Suresh Thenozhi, Ramón O. Jiménez-Betancourt, S. K. Gadi

摘要:

本文提出了一种基于Ackermann公式的滑模控制器(SMC)的自动整定算法,该控制器用于衰减安装在顶层的主动调谐质量阻尼器(ATMD)的地震激励建筑物的结构振动。滑模控制器的切换增益和滑动面通过所提出的调整算法来设计,以抑制结构振动,通过最小化顶层位移或控制力施加到ATMD。此外,调整算法选择SMC参数,以保证以下闭环特性:1)结构和ATMD的瞬态响应是足够快的和阻尼的; 2)控制力,以及位移和速度的建筑物和ATMD是在可接受的范围内的频段的地震激励。所提出的SMC对未建模的动态,如阻尼器的摩擦具有鲁棒性。实验结果表明,与传统的线性二次型调节器(LQR)和最优滑模控制器(OSMC)相比,在缩小规模的结构许可证证明SMC的调整算法的效率。

英文摘要:

This paper proposes an automatic tuning algorithm for a sliding mode controller (SMC) based on the Ackermann's formula, that attenuates the structural vibrations of a seismically excited building equipped with an Active Tuned Mass Damper (ATMD) mounted on its top floor. The switching gain and sliding surface of the SMC are designed through the proposed tuning algorithm to suppress the structural vibrations by minimizing either the top floor displacement or the control force applied to the ATMD. Moreover, the tuning algorithm selects the SMC parameters to guarantee the following closed-loop characteristics: 1) the transient responses of the structure and the ATMD are sufficiently fast and damped; and 2) the control force, as well as the displacements and velocities of the building and ATMD are within acceptable limits under the frequency band of the earthquake excitation. The proposed SMC shows robustness against the unmodeled dynamics such as the friction of the damper. Experimental results on a reduced scale structure permits demonstrating the efficiency of the tuning algorithm for the SMC, which is compared with the traditional Linear Quadratic Regulator (LQR) and with the Optimal Sliding Mode Controller (OSMC).

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