The Simulation Research Of Non-Position Sensor Of The Switched Reluctant Motor System Based MATLAB

The simulation research of non-position sensor of the switched reluctant motor (SRM) system have gained more attention since 1980 due to its flexible control method, compactness, robustness and good electric characteristics. Both relevant research for theory and application in this field have made great progress. However because of relatively shorter time spent in this research and the complex nonlinearity of controlling system, a lot of problems still exist in further research. In research of controlling system about the switched reluctance motor system (SRD), there are two prominent problems, one is that it is difficult to set up accurate mathematical model of SRM due to serious nonlinearity caused by double-salient structure, The other is that the previous schemes of SRD are always equipped with rotor position sensor, which determines the system's high speed performance, reliability and cost. As a result, how to detect the position of non-position sensor rotor has become one major direction in the study of SRD.The dissertation is organized as follow: First, the characteristics of SRM and its control system's development are introduced. Previously major methods used to implement non-position sensor detection and the significance of making search for this direction is generated. And the configuration and fundamental operating principle of SRM are analyzed; some study of linear model and nonlinear model with phase coil as fundamental parameter are presented and SR's linear model and nonlinear model are set up. In this study, the nonlinear model of SR is mainly described. All of work above can work as the basic knowledge for further research for operating characteristics and simulation, the detecting principle and implementing method with sensor as the means for requirement of information about rotor position are described. Next, a novel inductance method and rotor position angle estimation using fuzzy logic are studied. In this dissertation, some knowledge about error signals are detailed, at the same time, some research for improving precision is also provided. Last, MATLAB6.1 as simulation tool is used to make research for the whole SRD system and operating characteristics and rotor position angle estimation.The UI are designed for the simulation of SRD system, This UI is shortcut and simple.