非线性船舶随机波上的减摇控制器设计  

Anti-roll control on nonlinear ship system under stochastic wave

作　　者：徐荣华[1] 王钦若[1] 宋亚男[1] 

机构地区：[1]广东工业大学自动化学院,广东广州510006

出　　处：《计算机工程与设计》2010年第17期3915-3918,共4页Computer Engineering and Design

基　　金：广东省自然科学基金项目(06300261);广东工业大学青年基金项目(052031)

摘　　要：通过数学变换,将船舶在给定随机波上的、直到颠覆的大幅度横摇方程转化成状态方程描述形式。分析系统条件基础上,通过构造法,验证系统满足控制器设计假设条件。基于随机控制Lyapunov函数设计了横摇情况下船舶的减摇控制器,利用离散相似法构建了随机非线性系统的数值算法。仿真结果表明,被镇定系统的倾覆概率大大降低,验证了该控制器的有效性。Based on mathematic transformation,Large-amplitude rolling motion nonlinear equation of a ship under stochastic wave is changed into state equation expression.It is proved that the assumptions of designing controller with Lyapunov method are satisfied by analyzing the conditions characteristic and using constructive method.Anti-roll control nonlinear ship system under stochastic beam sea is designed based on stochastic control Lyapunov function.Numerical algorithm is built based on discrete-similarity method.Simulation shows that the capsize probability is largely reduced.Examples are given to illustrate the application of the method.

关 键 词：减摇 控制 非线性 随机 颠覆概率 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]