抑制船舶非线性横摇的主动陀螺减摇装置  

Active Gyro-stabilizer for Nonlinear Roll Suppression of Marine Vehicles

作　　者：陆建辉[1] 陈少楠[1] 

机构地区：[1]中国海洋大学工程学院,青岛266100

出　　处：《机械工程学报》2011年第19期86-90,共5页Journal of Mechanical Engineering

基　　金：国家自然科学基金(46976019);国家科技重大专项(2011ZX05056-003-012)资助项目

摘　　要：考虑船舶在横浪中运动恢复力矩、阻尼力矩的非线性,建立船舶在不规则波浪中单自由度非线性横摇运动方程,提出一种基于控制力矩陀螺的船舶横摇抑制装置,研究船舶和减摇装置系统非线性动力学性质,设计变增益控制律控制陀螺减摇装置的进动,以产生期望的控制力矩,达到有效抑制船舶横摇的目的。以某船为研究对象,以随机横浪激励为干扰输入,研究所设计的减摇装置在不同海况下的横摇抑制效果,在有义波高分别为1 m和4 m时,横摇减摇率分别达到83.64%和79.04%。仿真结果表明,所设计的减摇装置能有效抑制船舶非线性横摇。Considering the nonlinear damping and nonlinear restoring moment,an equation of marine vehicles roll in random wave is established.A stabilizer based on control-moment-gyro is also presented to attenuate roll motion.According to the characteristics of the gyro,the nonlinear dynamics equations of the ship and the gyro-stabilizer system are established,and a variable control gain method is used to control the precession angle of the gyro,so that a desired control moment can be generated and the ship roll will be restrained effectively.Taking a fishery administration ship as the research object,the effectiveness of the controller to suppress the ship roll motion is simulated under the random wave excitation as the perturbation in different sea state.When the significant wave height is 1 m and 4 m,the roll of the ship is reduced by 83.64% and 79.04% respectively.The simulation results show that the gyro stabilizer can attenuate the ship roll motion effectively.

关 键 词：非线性横摇 随机波浪 陀螺减摇装置 变增益控制 

分 类 号：U661[交通运输工程—船舶及航道工程] TP273[交通运输工程—船舶与海洋工程]