Output feedback disturbance rejection control for building structure systems subject seismic excitations

Qixun Lan,Yajie Li,Weiping Zhu,Jingjing Mu,Xiaoguo Zhang,Huafeng Xu

doi:10.1177/0020294020959743

Abstract

In this paper, the output feedback disturbance rejection control (OFDRC) problem is considered for buildings structures subject seismic excitations. First, based on a mild assumption and a linear transformation, the addressed problem of building structure system is translated into the output feedback disturbance rejection control problem large-scale system with disturbances. Then, by utilizing generalized-proportional-integral observer (GPIO) technique and output feedback domination approach, an output feedback decentralized disturbance rejection control law is derived via a systematic design manner. The multi-overlapping output feedback disturbance rejection controller is obtained according to the inverse transformation of a linear transformation. Strict theory analysis demonstrates that the states of the structure system will be stabilized to a small bounded region. Finally, an 8-story structure system is employed to evaluate the effectiveness of the proposed control strategy. Simulation results demonstrate that the proposed OFDRC exhibits better seismic loads attenuation ability and strong robustness against model uncertainties.

Highlights

Nowadays, more and more tall buildings are mushroomed in the city, which suffers from many natural hazards
In order to reduce the risk of the traditional centralized control methods on failure of control systems and enhance the reliability of control applications, some advanced control methods were proposed
An improved decentralized method for building structure systems was proposed in Ma and Yang[8] based on sliding mode control strategy

Summary

Introduction

More and more tall buildings are mushroomed in the city, which suffers from many natural hazards. An improved decentralized method for building structure systems was proposed in Ma and Yang[8] based on sliding mode control strategy. The result[8] is based on the full information of the whole systems are measurable.[21] proposed decentralized output feedback control method based on sliding mode control technique. To the best of our knowledge, there are few results on the output feedback disturbance rejection control (OFDRC) problem of building structure systems in the literature. Compared to the aforementioned control strategies for building structure systems, the major contribution of this paper could be summarized as follows: (i) Only the displacement information is needed to during the design process; (ii) The seismic excitations is cancelled rather than attenuated, the current OFDRC could offer remarkable disturbance rejection ability; (iii) The current OFDRC has a simple linear structure which is beneficial to practical applications.

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Conclusion