基于模型预测的主动式减摇水舱约束控制

Constrained Control of Active Tank Stabilizer Based on Model Prediction

由于边舱高度有限,减摇水舱中的流体在水舱内运动时会引起饱和非线性,给舱内流体运动的估计与控制带来困难.针对饱和非线性所带来的控制问题,建立船舶-水舱系统模型,同时基于约束条件设计了模型预测控制(MPC)策略.仿真结果表明,该控制策略在减少主动式水舱高能耗的同时,增强了对水舱内流体的控制,有效提高了水舱系统的减摇效果.

Liquid in tank stabilizer was difficult to estimate and control because of the saturation induced by tank roof limitation.Based on the ship-tank model,a constrained model prediction control is applied to ship-tank stabilization system to solve the nonlinear problem.Numerical simulation showed that liquid in tank stabilizer became more controllable under this control strategy and the U-tube tank performed more effectively in ship roll mitigation.In addition,more efficient power utilization is acquired.