Author(s): WU Jin-bo, ZHANG Song-kui
Pages: 49-53
Year: 2016 Issue:  9
Journal: Ship Science and Technology
Keyword:  air spring; floating raft; vibration isolation; attitude adjustment; fuzzy control;
Abstract: Air springs are equipped on ship floating raft vibration isolation system, and the attitude adjustment of float-ing raft can be realized by controlling the air bag charging and discharging. To solve the control problem of pressure distribu-tion and raft oscillating in the course of raft's attitude adjustment, an control strategy is proposed based on air spring's height and press, which contains two stages:first, output shaft alignment is achieved using fuzzy control;then, using a strategy of 'high-discharge or low-charge' to adjust the horizon attitude precisely. Tests are carried out to verify the efficacy of this strategy, and the test results indicate that the designed control system is effective.