大型舰船综合减摇系统无模型自适应控制

Model-free adaptive control of integrated roll-reducing system for large warships

针对减摇鳍单独控制,减摇水舱单独控制和鳍/被动水舱综合控制3种减摇系统设计了无模型自适应控制方案,并对相应的减摇效果进行仿真研究.仿真研究结果表明:大型舰船采用基于无模型自适应控制的鳍/被动水舱联合减摇方案,其工作性能好于单独使用减摇鳍或减摇水舱等减摇装置的性能,在各种航态下都能满足系统设计要求.另外,无模型自适应控制仅用系统I/O数据,不必事先建立系统精确的数学模型,可适应海况的变化,且参数调整少,计算量小,还能适应系统对快速性的要求.

We propose a model-free adaptive control（MFAC） scheme to tackle the rolling of a large warship by integrating three separate roll-reducing strategies of the warship, i.e., the single fin stabilizer control, the single roll-reducing tank control and the integrated fin/roll-reducing tank control. Simulation results show that this integrated scheme provides much better performance than that of the fin-control or the roll-reducing tank control in independent operation. The integrated roll-reducing strategy has the roll-reducing ability in full-conditions; it deals with encountering waves in different directions and different ship speeds. Furthermore, since the MFAC-based controller only uses the I/O data, the exact mathematic model is not needed in advance; this makes it adaptable to various sea situations. The adjustable parameters are few, and the computation required is little.