Research Of Adjusting Speed System For PMSM Based On STM32

Permanent magnet synchronous motor (PMSM) has been long favored byits outstanding characteristics of high efficiency, high energy density, simplestructure, small rotational inertness etc. In the field of servo control, althoughinfluenced by price and other factors, permanent magnet synchronous motorservo system still has a wide application in the accurate control situation. Inrecent years, with the state support for industrial control, the development ofelectronics technology and the cost reduction and cycle acceleration ofresearch, the technology development and market application of permanentmagnet synchronous motor servo control system becomes very hot.In this context, for learning and research the theory and method of servocontrol, this paper designed an adjusting speed system of permanent magnetsynchronous motor by consulting a large number of books and literature. Inthis system, the core chip is STM32F407VET6, the vector control way is basedon the rotor flux orientation, the method of driving is space vector pulse widthmodulation (SVPWM), the algorithm is PI control with current and speedfeedback.Firstly, the principles and methods of PMSM speed control werediscussed, analyzed and verified. In this paper, a mathematical model ofPMSM with the vector control way based on rotor flux orientation is derived,the principles and methods of SVPWM are emphasized, and a simulationmodel of adjusting speed system is built to obtain the simulation results andprove the feasibility of this design by using Simulink.Then, the entity of PMSM adjusting speed system is designed and tested.In this paper, the hardware design and software processes are showed, manykey technologies are analyzed, and simple tests and experiments are made toobtain experimental result and demonstrate the feasibility and practicability of PMSM adjusting speed system by using the prototype.Finally, all kind of work completed during the study are summarized, somedeficiencies of the work are described, and the possible direction in futureresearch are forecasted.