电动跑步机外转子无刷电机驱动及控制系统研究-电力电子与电力传动专业论文.docxVIP

湖北工业大学硕士学位论文 湖北工业大学硕士学位论文 Abstract Running is one of the rnost popul盯 sports for it is a kind of sirnple rnotion ，and it is a fashion to do exercises by dint of rnotorized treadrnill. Motorized treadrnill is very prornising 岛r practical application and it h描 ve可 broad rnarket prospects. Ac∞rding to the market investigation. the driving rnotor used in rnotorized treadmill at present in the markets rnostly used DC rnotor with brush and AC motor wi由 frequency conversion.This pap町 studied on motorized treadmill out町 rotor pe口nanent-rnagnet brushless DC rnotor and control syst臼n. There are rnany advantages to use outer rotor permanent-magnet brushless DC motor 部 motorized treadrnill drive motor. First. it leaves out gear equiprnent of traditional motorized treadrnill which makes the syst臼n construction sirnple. operation reliable and high efficiency; second ， it keeps the excellent varied speed and control performance that upgrade the quality of motorized treadrnill and realize it intel1igentize; third ，it rnakes the rnotorized treadmil1 syst臼n have high quality value ratio and more advantag臼 on markets competition. Thus ，the research on rnotorized treadmill out町 rotor permanent-magnet brushless DC rnotor and control syst臼n in this subject has higher theoretical and practical value. This paper sumrnarized research situation and the trend of development of the rnotorized treadmill and using outer rotor permanent-magnet brushless DC rnotor as it drive motor has excellent advantage at first. It also overviewed operating principle and characteristics. fraction slot winding and control method of out町 rotor permanent-magnet brushless DC rnotor.lt studied BLDC rnotor magnet field distribution in different pole rnatched with different slot and the coefficient of different pole arc effect on rnotor operation performance by using MAGNEFORE magnet field finite el臼nent method analysis so玩ware. On this basis ，electromagnetic design of the rnotor