The Theoretical Study Of Mainland Method Ship Model Motor Speed Regulating Intelligently Control

The self-sailing experiment of ship model is that ship model sails in the water under the driver of the motor. The experiment can obtain the driver and the torsion of the screw propeller of relative speed and is an important method to analyze the efficient part of push. At present , the self-sailing method includes two kinds that they are English Method and Mainland method. Now the most experiments of the kind use English Method because the speed of ship model is difficult to be controlled by the motor . The English Method has two shortcoming in the long time' s practice . Firstly, the precision can not meet with the need.Secondly, it is complex.In AC regulating speed , V. F. V. R is a major direction of development of the mordern power driver. It plays an important role in such aspects as saving the electricity, reducing the maintenance, realizing the automation and so on.Becauce of its difference from D. C. motor, it is a complex controlled-object for its nonlinear, multiple variable , high order, compulsive coupling. So it is very difficult to set up the mathematical model.With the development of the technology of electronics and controlling, it is probable to realize the Mainland Method. Through the practice, the effect that the AC Speed Adjusting System is controlled by Fuzzy Control is good.The main content of this thesis is to design a kind of Self-Adaptive Fuzzy Controller applying in VFSR for ship model experiment to meet with the request mentioned above.This thesis is composed of seven chapters:The first chapter is the introduction of this thesis. It is summary of the background, the technology method, and the significance of research; In the second chapter, the writer propounded the new method for speed regulating to realize the Mainland method. The introduction of the foundation of fuzzy control is the content of the thirdchapter.The main content of the fourth chapter is the theoretical foundation of Fuzzy Control;In the fifth chapter, the writer propounded a kind of Self-Adaptive Fuzzy Controller according to the defnult of the conventional Fuzzy Controller and its properties and structure are alse illustrated at the same time;The main content of the sixth chapter is the design of SA Fuzzy Controller;the seventh chapter is the summary of hardware and software of VFSR for controlling system.In fact, this SA Fuzzy Controller is a kind of SA Fuzzy controller without the reference model. Its design is simple because it only need to add three function blocks.This is to say that the whole controller is composed of two parts:the basic link and the adaptive link. The basic link carries out the function of the conventional Fuzzy Controller;The adaptive link performs the modification of the control rules and includes three keys:the properties measurement, the rectification of controlling variable and the modification of the control rules.This method is simple.It is also flexible and convenience to modify.The result of the will testify that the design way is correct and the SA Fuzzy Controller is useful.For short of time, 1 just focused on theoretical discussion of ACVF Speed Regulating System of SA Fuzzy Control. Further designs in practice will take much more time later.