Robust LSSVM-LQR based time-delay intelligent control algorithm for reducing seismic responses of structures

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (7) : 109-114.

Aiming at the stability problem of the LSSVM-LQR intelligent control algorithm for reducing seismic responses of structures, a stability controlling algorithm is proposed to ensure that the LSSVM-LQR intelligent control algorithm has good robustness. The main idea of this algorithm is that the limit condition of control forces is imposed on the LSSVM-LQR intelligent control algorithm. If the limit condition of control forces is fulfilled, the control procedure continues to run. However, if the limit condition of control forces is not fulfilled, the control procedure automatically jumps out and then, executes the stability control algorithm, referred also to as the stable/robust LSSVM-LQR intelligent control algorithm, which ensures the stability of the system mainly through controlling actuator operation with resorting to adjusting feedback. The numerical results show that the developed stability controlling algorithm can effectively guarantee the stability/robustness of LSSVM-LQR intelligent control algorithm. The time-delay LSSVM-LQR intelligent control algorithm and stability/robust time-delay LSSVM-LQR intelligent control algorithm add each other in action.

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Abstract

Aiming at the stability problem of the LSSVM-LQR intelligent control algorithm for reducing seismic responses of structures, a stability controlling algorithm is proposed to ensure that the LSSVM-LQR intelligent control algorithm has good robustness. The main idea of this algorithm is that the limit condition of control forces is imposed on the LSSVM-LQR intelligent control algorithm. If the limit condition of control forces is fulfilled, the control procedure continues to run. However, if the limit condition of control forces is not fulfilled, the control procedure automatically jumps out and then, executes the stability control algorithm, referred also to as the stable/robust LSSVM-LQR intelligent control algorithm, which ensures the stability of the system mainly through controlling actuator operation with resorting to adjusting feedback. The numerical results show that the developed stability controlling algorithm can effectively guarantee the stability/robustness of LSSVM-LQR intelligent control algorithm. The time-delay LSSVM-LQR intelligent control algorithm and stability/robust time-delay LSSVM-LQR intelligent control algorithm add each other in action.

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Intelligent control algorithms / Time-delay / LSSVM-LQR / Stability / Earthquakes

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Li Chunxiang1 Zhao Deqi2 Lan Shengning1. Robust LSSVM-LQR based time-delay intelligent control algorithm for reducing seismic responses of structures[J]. Journal of Vibration and Shock, 2015, 34(7): 109-114

References

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