Improving existing “reaching law” for better discrete control of seismically-excited building structures

Zhijun LI; Zichen DENG

doi:10.1007/s11709-009-0022-5

Front. Struct. Civ. Eng. ›› 2009, Vol. 3 ›› Issue (2) : 111 -116. DOI: 10.1007/s11709-009-0022-5

RESEARCH ARTICLE

Improving existing “reaching law” for better discrete control of seismically-excited building structures

Zhijun LI ¹^,²^,^*
, Zichen DENG ¹^,³

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Abstract

In this paper, a novel “composite reaching law” was explained in details: 1) the equation of discrete motion for a control system; 2) the design of discrete-time variable structure control. In addition, the model of a three-storey shear-type building structure was used to verify the effectiveness of the discrete variable structure control method. The results of numerical example analysis of the model show that the control law can effectively reduce the peak value of seismic response of the building structure and the chattering effect of the control system.

Keywords

discrete-time variable structure control / composite reaching law / chattering effect / saturated control law

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Zhijun LI, Zichen DENG. Improving existing “reaching law” for better discrete control of seismically-excited building structures. Front. Struct. Civ. Eng., 2009, 3(2): 111-116 DOI:10.1007/s11709-009-0022-5

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