Simulation analysis of control algorithm for smart isolated structure based on Simulink S-Function

A new simulation module is created based on the Simulink S-Function to meet the main characteristic of the active sequential optimal control (SOC) algorithm, in which the gain matrix is time variation, and embed into the Simulink Standard Block Library. Based on this new block library, a numerical simulation is carried out on the seismic responses of a five-storey base-isolated frame structure. Six key indices recommended by the ASCE are calculated to evaluate the control effects among the classical optimal control (COC), linear quadratic Gaussian (LQG) control and SOC in the case of the sensors normal working and sensors contaminated by white noise with different magnitudes, respectively. The results show that the new S-Function module is convenient and efficient in implementing a control algorithm simulation, and comparison with other two, the SOC algorithm has the best noise-resisting ability and the stable advantage in overall control effect.