可控被动式减摇水舱的建模与仿真

通过对气体的受力分析，推导了气阀的控制方程。在查德惠克U型被动式减摇水舱理论的基础上，建立了“船舶一可控被动式减摇水舱”系统的数学模型。研究了气阀最佳控制策略的理论依据，并运用常规控制策略和最佳控制策略对规则波和不规则波作用下的“船舶一可控被动式减摇水舱”系统进行了仿真研究。仿真结果表明，采用最佳控制策略对气阀进行控制，能够取得理想的减摇效果。可控被动式减摇水舱只要控制气阀的时机得当，在非谐摇区尤其是低频段区域能有效地减小船舶的横摇运动，比被动式减摇水舱有更宽的减摇范围。

Modeling and Simulation of Passively Controlled Anti-rolling Tank

The control equation is developed after analyzing air pressure. The mathematical model of passively controlled anti-rolling tank is set up based on theories of U-type passive anti-rolling tank. The bases of best control strategy are obtained according to mathematical model. Both routine control strategy and best control strategy are applied in the simulations toward system that disturbed by regular wave and irregular wave. Simulation results show that stabilizer effect adopting best control strategy is better than that using routine control strategy in the non-resonance range. The passively controlled anti-rolling tank can obtain wider stabilizer range if control time is suitable especially in low frequency range.