气囊支撑浮筏隔振系统姿态控制研究

Research on attitude control of floating raft vibration-isolation system with air spring

将气囊隔振器应用于舰船浮筏隔振装置,通过控制气囊充、排气可实现浮筏的姿态调整。目前以气囊工作高度为指标的控制方法,存在各个气囊压力分布不均和调节过程振荡的问题,针对该问题提出一种基于气囊工作高度、实际压力与最优压力偏差的浮筏姿态控制策略。将调整分为高度调整和水平姿态调整2个阶段:首先采用模糊控制快速将输出轴调整到对中高度,然后以"高排低充"的策略精确调整浮筏水平姿态。试验结果表明,该控制策略能更加快速、平稳、精确地调整浮筏姿态。

Air springs are equipped on ship floating raft vibration isolation system, and the attitude adjustment of floating raft can be realized by controlling the air bag charging and discharging. To solve the control problem of pressure distribution 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.