On Stabilizing Sets of PI Controllers for Multiple Time Delayed Process

This paper considers the problem of stabilizing multiple time delayed processes using proportional integral (PD controller. The presented approach is based on finding all possible values of control parameters which will result in pure imaginary roots of closed loop characteristic equation under all process parameters fixed. The ergedic search of three PI control parameters are converted from the range of infinity to finite range by introducing trigonometric tangent function. After all possible stability boundaries are obtained, the Nyquist stability method is used to determine the actual stability region of the controller parameters. This method also permits design for simultaneous minimum gain and phase margin requirement. An illustrative example case is also presented.     

随机干扰下降阶时延混沌系统的自适应广义投影同步

研究随机干扰下降阶时延混沌系统的广义投影同步(RLGPSS).结合自适应控制方法和反馈控制技术,设计控制器和参数自适应更新律,实现混沌系统的RLGPSS问题,同时,对于系统未知参数能够有效的辨识.数值仿真结果证实了所提出控制策略的有效性.     

Fuzzy Control of Chaotic System with Genetic Algorithm

ＩｎｔｒｏｄｕｃｔｉｏｎＩｎｒｅｃｅｎｔｙｅａｒｓ,ｔｈｅｒｅｈａｓｂｅｅｎｉｎｃｒｅａｓｉｎｇｉｎｔｅｒｅｓｔｉｎｔｈｅａｐ ｐｌｉｃａｔｉｏｎｓｏｆｃｈａｏｓｔｏｔｅｃｈｎｏｌｏｇｙ .Ｏｎｅｏｆｔｈｅｐｒｏｂｌｅｍｓｆａｃｅｄｉｓｔｏｉｎｖｅｓｔｉｇａｔｅｔｅｃｈｎｉｑｕｅｓｆｏｒｅｆｆｉｃｉｅｎｔｌｙｍａｎｉｐｕｌａｔｉｎｇｃｈａｏｔｉｃｓｙｓｔｅｍｓ.Ｓｏｍｅｒｅｓｅａｒｃｈｅｒｓｈａｖｅｐｒｏｐｏｓｅｄｔｏｕｓｅｃｌａｓｓｉｃａｌｍｅｔｈｏｄｓｓｕｃｈａｓｆｅｅｄｂａｃｋｃｏｎｔｒｏｌ[1]…