The Design And Development Of Low-power Permanent Magnet Synchronous Motor Servo System

National 12 th five-year plan clearly put forward to develop the new industry of energy conservation and environmental protection, in which the motor-system energy saving is the key projects. In recent years, the Permanent Magnet Synchronous Motor with its own advantages, occupies the dominant position in some areas,such as aerospace, military weapons systems and CNC machine tools,in which require high performance of motor and control accuracy. So the research of Permanent Magnet Synchronous Motor servo system has very important social and economic significance.On the basis of vector control and for low cost applications, this thesis designs and develops a set of Permanent Magnet Synchronous Motor servo control system based on hall sensor low-power. To compensate for the lack of the accuracy in hall sensor location accuracy, this thesis optimizes from the two aspects of hardware and software. In the hardware aspect, this thesis chooses the method of hall position automatic setting, which makes the rotor position angle in the hall intermitting position more accurate. In the software aspect, this thesis proposes a dynamic adjustment method of phase difference, make the synchronicity higher between the drive signal phase and rotor position.This thesis with the vector control strategy of id = 0, minutely introduces the hardware and software structure of the control system and the main designing principle and realization method of the function module.This thesis also makes a study on some key technologies of motor servo control system. Motor driven algorithm adopts the technology of Space Vector Pulse Width Modulation(SVPWM), which has high efficiency, low loss, fast response and easy digital realization, and good inhibition in the electromagnetic torque pulsation in the low process of motor. Current detection employs the detection method based on two sampling resistance for three phase current, and studies the sampling frequency and sampling time. The dynamic braking method is adopted to realize the motor brake, and appropriate algorithm is designed to avoid the braking process of impulse current system damage. This thesis uses MATLAB/SIMULINK software to build the system model, and carries on the simulation research in system control principle. In result, the thesis gets the simulation waveforms of torque, rotating speed and three phase current, and verifies the validity and feasibility of the system design through a review of the results of simulation.The special motor control chip STM32F103RBT6 and motor driver chip IR2136 as the core, this thesis designs the hardware system, and then realized the controller software system based on the above control algorithm and the simulation results. The test results of MTS-I motor testing system show that this system meets the design requirements, and realizes nice servo control precision and control quality.