基于离散模糊多模型的船舶航向控制器设计  

Controller Design for Ship Steering Based on Discrete Fuzzy Multi-model

作　　者：张松涛[1] 

机构地区：[1]哈尔滨商业大学物流学院,黑龙江哈尔滨150076

出　　处：《控制工程》2009年第3期274-277,281,共5页Control Engineering of China

基　　金：辽宁省教育厅科研基金资助项目(20060106);中国博士后科学基金资助项目(20080430929)

摘　　要：应用模糊控制系统探讨船舶航向控制器设计问题。建立船舶航向控制系统的离散T-S模糊模型,并基于输入采用双交叠模糊分划的模糊控制系统的性质,通过在最大交叠规则组中构造分段离散型Lyapunov函数,提出一个新的判定闭环离散T-S模糊控制系统稳定性的充分条件,该条件仅需在每个最大交叠规则组中分别寻找各自公共的正定矩阵。较之以往稳定性判定方法,所提出的方法不仅克服了需要寻找一个公共矩阵的不足,而且也大大减少了求解Lyapunov不等式的个数。应用并行分布补偿方法(PDC)设计一种船舶航向离散模糊控制器。仿真例子验证了此方法的有效性和优越性。The controller design problem of ship steering is discussed based on fuzzy control systems. A discrete T-S fuzzy model of ship steering is established. Based on the properties of fuzzy systems with two-overlapped fuzzy partition（TFP） inputs, a sufficient condition to check the stability of closed-loop fuzzy control systems is proposed via piecewise discrete Lyapunov function constructed in maximal overlapped-rule group. This condition only requires finding a common positive-definite matrix in each maximal overlapped-rule group, it can overcome the defect of finding a common positive-definite matrix, and reduce the number of solving Lyapunov inequalities. By using the method of parallel distributed compensation（ PDC）, a discrete T-S fuzzy controller for ship steering is designed. Simulation example shows the effectiveness and advantage of the method .

关 键 词：船舶航向 模糊多模型 控制器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] U664[自动化与计算机技术—控制科学与工程]