Li, B. and, Yang, H., 2020. Design of active vibration reduction system for intelligent ship mechanical equipment. In: Bai, X. and Zhou, H. (eds.), Advances in Water Resources, Environmental Protection, and Sustainable Development. Journal of Coastal Research, Special Issue No. 115, pp. 235-237. Coconut Creek (Florida), ISSN 0749-0208.
An intelligent shock absorber with active-passive compound and integrated sensing action is developed for engineering needs. It's based on the traditional passive isolation structure, the active actuator, power amplifier, high and low pass filter, acceleration error sensor and subsequent amplifier and filter circuits are integrated. An active damping system for ship machinery equipment is constructed with an active controller running offline. Based on the system, a demonstration platform for active vibration reduction of diesel generator set is established. The entire bench is mounted on an elastic steel plate simulating the hull structure through four intelligent shock absorbers, the vibration performance of the active vibration reduction system is evaluated by measuring the vibration of the elastic steel plate. The demonstration bench test results show that The total vibration level of the intelligent shock absorber within 800 Hz has a passive vibration reduction effect of more than 33 dB, Based on this, active control has a good control effect on multiple lines within 200 Hz, A maximum active attenuation of 30.8 dB, The active attenuation of total vibration level within 200Hz reaches 20 dB.. Synthesizing the effects of active and passive vibration reduction, the intelligent shock absorber can attenuate the total vibration level of the diesel generator set of the demonstration bench O∼ more than 47.2 dB in the range of 800 Hz.