关键词: 耦合隔振；钢丝绳隔振器；气动阻尼器隔振；MATLAB 仿真优化

Abstract: In order to solve the problem of unstable vibration during on-board shooting, a coupling vibration isolation system with wire rope isolator and pneumatic damper in parallel is designed. Five nonlinear pneumatic damper schemes with different aperture-varying diameters are proposed, including sine, cosine, velocity, acceleration and displacement. On the basis of the established mechanical model of the parallel coupling of 4 groups of wire rope and 4 groups of pneumatic dampers, the on-board free vibration and excitation vibration conditions are simulated, and the vibration isolation effects of the on-board coupled vibration isolation system between vibration frequency 0.5～30 Hz and vibration acceleration 0.5～2g are obtained. Finally, the key parameters under the displacement change mode are selected. It not only broadens the isolation frequency band of the vibration isolation system, but also improves the stability of the vibration isolation system.

Key words: coupled vibration isolation; wire rope isolator; pneumatic dampers for vibration isolation; MATLAB simulation optimization