基于输出延迟反馈方法的船舶电力系统混沌控制.pdfVIP

SHIP ENGINEERING 船 舶 工 程 Vol.31 No.6 2009 总第 31 卷，2009 年第 6 期 基于输出延迟反馈方法的船舶电力系统混沌控制 朱志宇，刘维亭，蔡立勇 （江苏科技大学电子与信息学院，镇江 212003 ） 摘 要：为了抑制船舶电力系统在周期电磁扰动下产生的混沌振荡，建立了船舶电力系统的双机并 联数学模型，应用Melnikov 方法得到了船舶电力系统产生混沌振荡的解析条件，采用输出延时反馈控制 方法，通过选择合适的延迟时间和反馈系数，破坏系统发生混沌运动的参数条件.仿真结果表明，基于输 出延时反馈控制方法的混沌控制器结构简单，所需的控制能量小，可以将系统的混沌运动状态控制为周 期一运动，提高了船舶电力系统的稳定性. 关键词：船舶电力系统；混沌振荡；输出延时；反馈控制 中图分类号：TM712, U665.13 文献标识码：A 文章编号：1000-6982 (2009) 06-0036-05 Chaos control of ship electrical power system based on output delay feedback method ZHU Zhi-yu, LIU Wei-ting, CAI Li-yong (School of Electronics and Information, Jiangsu University of Science and Technology, Zhenjiang 212003, China) Abstract: In order to suppress chaotic vibration of ship electrical power system which was excited by periodic electromagnetism perturbation, twin-engine paralleling mathematical model was constructed and Melnikov method was applied to acquire the analytic condition of chaotic vibration. Output delay feedback idea was used to destroy such condition through selecting appropriate delay time and feedback coefficient. The simulation results show that the designed controller can restrain the chaotic oscillation into period one state with simple structure and less control energy that can enhance stability of ship electrical power system. Key words: ship electrical power system; chaos vibration; output delay; feedback control 0 引言 待进一步深入研究.和陆上电力系统不同，船舶电力系 在船舶航行中多次观测到船舶电力系统出现了混 统有很多特殊性，并且随着船舶电力系统的容量不断 沌振荡现象，至今尚不完全清楚其机理，但是这种振 增加，船舶电力系统的复杂性也在增加，船舶电力系 荡对船舶电网的安全运行构成了潜在的威胁.文献[1] 统的稳定性和可