Modeling Analysis of Seismic Wave Generation and Control Based on Twin Rotary Valve

The earthquake simulation shaking table is an indispensable equipment for earthquake research. A new seismic wave generation and control method based on the twin rotary valve is proposed to meet the requirements of the flexible regulation of simulated seismic waves for large-scale testing. Meanwhile, the static and dynamic regulation characteristics are analyzed based on the mathematical model of the novel system aiming to further improve the frequency bandwidth and amplitude of the system. The research results show that the novel structure and control method are feasible in terms of the flexible regulation of the waveform frequency and amplitude, which provides new ideas to further enhance the level of the seismic wave control technology for large-scale testing.