Permanent Magnet Synchronous Linear Motor Servo Control System

After the period of 90's, Science technology is changing quickly, Especially, because of the development of computer science, micro-electronics, and modern control theory, Electrical Machinery and its interrelated subjects develop swiftly and violently. It is feasible and inevitable that digital control method has been taking the place of analog control method in this field. At the same time, The technology about the linear motor is widely used in the precise location field. Especially, with the requirement of the digital controlled machine tools increasing, The hyper speed, the hyper precision, the hyper reactivity, what is called zero mechanical gearing control theory, are easy to put in practice for the linear motor's servo system.Compared with the conventional rotary motor and scroll lever, the linear motor's servo system has removed the bad effects which are caused by the mechanical gearing. But it adds the difficulties in the aspect of electrical control. We should stand a higher level and take deeper consideration about some disturbs or some uncertain factors in situation of higher precision and tinier process. Otherwise, Zero mechanical gearing has nonsense. So we should take more effective control technologies, Such as using the Digital Signal Processing Chip, adopting Voltage Sinusoid Pulse Width Modulation, Voltage Space Vector Pulse Width Modulation, Adaptive Control, Neural Control, Fuzzy Control. In order to get higher efficiency, It is worth replacing some big and heavy mechanical components by the micro-electronics and software method.The content of this paper can be summarized as follows: Chapter 1 contains the basic principle of linear motor, its control technology, history and classification. Chapter 2 describes several state-of-art control methods of PMSM and gives a intensive description of the method which has been used in the experiment system. Chapter 3 covers the software programme flowchart and hardware circuit scheme about the experiment system. Chapter 4 deals with the simulation based on MATLAB/Simulink and the analysis of simulation result. Finally, Chapter 5 and Chapter 6 discuss the result and the unresolved problem of the experiment, and some possible improved methods to solve this problem are also discussed.