Electric Seats With Rare Earth Permanent Magnet Brushless Dc Motor Drive System

In this dissertation, a novel drive system used in electromotion chair, rare earth permanent magnet brushless direct current machine(REPM BLDCM) drive system is proposed,which is provided background by Ministry of Nation Science andTechnology " SHIWU " programming momentous critical item-rare earthapplication project item-direct current brushless superior reliability rare earthpermanent magnet machines.Digital signal processor(DSP) combined with REPM BLDCM,which build up a DC adjustable speed system, achieve to control multiple motor speed,positive and negative rotate,protect and fault exemine by a true single chip.Design and present a electromagnetism scheme of REPM BLDCM used in electromotion chair drive system.Select electronical components and chips in the drive board by contrast with variant drive mode.design the drive board principle picture,make a drive board PCB and debug it.Design a principle picture with DSP core.Workout the motor control code introduced popular programme modle.Test the programme reliability and control performance by linking TMS320LF2407 EVM ,PC,drive borad and the BLDCM. The BLDCM swatch is prepare experiment.