穿浪双体船T型水翼状态反馈H∞控制器设计

摘要

穿浪双体船在海洋中高速航行时，纵向运动会对其性能造成不利影响，产生的垂向加速度使乘员晕船，设备短期失效。为了解决此问题，首先建立穿浪双体船纵摇和垂荡运动模型，然后运用切片理论求解运动方程中的水动力系数，将随机海浪作为外界干扰，以T型水翼为纵向运动稳定装置，进而建立带T型水翼的穿浪双体船纵向运动模型。最后以90 m长的穿浪双体船为研究对象，利用状态反馈H∞控制策略设计控制器，对船体的纵摇和垂荡进行仿真实验。结果表明：状态反馈H∞控制器可有效地减小船舶纵向运动，降低晕船率，为减小高速船纵向运动提供可靠实用的方法。%When wave piercing catamaran sails at high speed in the sea, longitudinal motion has a harmful influence on its performance. The vertical acceleration makes crew seasickness and equipments out of work in a short term. In order to solve this problem, pitching and heaving motion model of wave piercing catamaran is established. Then strip theory is used to solve hydrodynamic coefficients of motion equation. Considering random ocean wave as external interference and T-foil as stability device of longitudinal motion, the longitudinal motion model of wave piercing catamaran with T-foil is established. The pitching and heaving motion is experimenting with the 90 -meters wave piercing catamaran using state-feedback H∞algorithm as controller. The results show that state-feedback H∞ controller could reduce the longitudinal motion of the ship and the rate of seasickness effectively. This paper has provided a reliable and practical method to reduce the longitudinal motion of wave piercing catamaran.