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The switching control method for the nonlinear response of seismic surface based on the local T-S model
El método de control de conmutación para la respuesta no lineal de la superficie sísmica con base en el modelo local T-S
DOI:
https://doi.org/10.15446/esrj.v24n3.90432Keywords:
Local T-S model, Seismic surface, Nonlinear response, Switching, Control, Damper (en)Modelo local T-S, Superficie sísmica, Respuesta no lineal, Traspuesta, Control, Apagador (es)
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Based on the local T-S model, the switching control method for the nonlinear response of the seismic surface is studied, and the stiffness matrix of the composite interlayer element of viscoelastic damper and herringbone support is derived. The high-order single step ß method is applied to the nonlinear seismic response analysis and the instantaneous optimal active switching control. The local T-S model and controller are designed, and the approach and control of global nonlinear responses are realized through the multi-model switching control. The results show that the proposed method can accurately reflect the reduction of seismic ground load and the switching control of the main structure when the viscoelastic damper is installed. The switching control effect of the maximum spatial displacement becomes more and more obvious with the change of time history, and the control effect of all layers applying the switching control force is the most significant. Whether the controller is disturbed or not, it is always good and stable performance.
Este artículo estudia el método de control de conmutación para la respuesta no lineal de la superficie sísmica con base en el modelo local T-S, y deriva la matriz de rigidez del elemento compuesto de capa intermedia del amortiguador viscoelástico y el soporte de espiga. El método ß de un solo paso de alto orden se aplica al análisis de respuesta sísmica no lineal y al control de conmutación activo óptimo instantáneo. El modelo local T-S y el controlador están diseñados, y el enfoque y el control de la respuesta global no lineal se realizan a través del control de conmutación multimodelo. Los resultados muestran que el método propuesto puede reflejar con precisión la reducción de la carga de tierra sísmica y el control de conmutación de la estructura principal cuando se instala el amortiguador viscoelástico. El efecto de control de cambio del desplazamiento espacial máximo se vuelve cada vez más obvio con el cambio del historial de tiempo, y el efecto de control de todas las capas que aplican la fuerza de control de cambio es el más significativo. Ya sea que el controlador esté alterado o no, siempre es un rendimiento bueno y estable.
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