Research On Sensorless Position Control System Of Switched Reluctance Motor Based On ARM

Switched reluctance motor as a new generation motor has unique advantages, it adopts double salient structure, motor ontology of simple structure, low cost, high efficiency, wide range of speed and control method is more flexible. It has been successfully applied to various fields of electric drive. In the running state of the switched reluctance motor, through the motor rotor position accurately, so as to realize the communication between each phase of the motor switch. However, the traditional position sensormake motor structure is becoming more and more complicated, the reliability of the system also decreases, limit the widespread use of the motor. In order to solve the negative factors of traditional position sensor, therefore position sensor is a subject worthy of study.At first, this dissertation simply introduces the SRM and the position detection technology research status and development trend at home and abroad. Establish Fourier series inductance model, using Matab/Simulink software, and has set up the SRM dynamic simulation model based on inductance model.Through the simulation analysis, the established model has good precision. Under the condition of the inductance model, put forward a model of variable coefficients inductance of SRM sensorless position control system, the method simplifies the machine structure and the structure of the controller hardware circuit. It only throught measur the phase current and voltage can be real time to estimate the rotor position.Through the simulation analysis to verify the feasibility of the SRM sensorless position control scheme, and has good precision make the control system has good robustness. Finally, completed the hardware and software design of the S3C2440 A controller as the core of the Samsung Corp, were verified in the test platform system. After analysis experimental results, it can prove the practicability of the position control scheme.