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针对船舶航行过程中动力装置隔振系统受到振动和冲击综合作用的问题,提出了半主动吸振抗冲击集成控制系统.该控制系统采用半主动吸振器调节自身的频率以实现对振动和冲击的控制.基于动力吸振方法对复杂隔振系统抗冲击规律进行了研究,利用逐步积分法求解了系统的冲击响应,并讨论了动力吸振器的安装位置、质量、刚度以及阻尼对抗冲击效果的影响,提出了优化方法.仿真结果明:在不同设备上分别安装吸振器的抗冲击效果明显优于单独在设备或浮筏上安装吸振器;合理优化吸振器参数后可使设备A、B的时域冲击衰减率达到27.3%和36.7%.
Aiming at the problem that the vibration isolation system of power plant is affected by the vibration and shock in the process of ship navigation, a semi-active shock absorption and impact integrated control system is proposed. The control system uses semi-active vibration absorber to adjust its own frequency in order to control vibration and shock The anti - shock law of complex vibration isolation system is studied based on dynamic vibration absorption method, the impulse response of the system is solved by the method of step - by - step integration, and the influence of the mounting position, mass, stiffness and damping of the dynamic vibration absorber on the impact resistance is discussed. The simulation results show that shock absorbers installed separately on different equipment are better than those installed on the equipment or floating raft alone.After the vibration parameters are optimized properly, the time-domain impact of equipment A and B Decay rate reached 27.3% and 36.7%.