Research Of Driver System In Intelligent Wheelchair Based On DSP

With the advancement of biomedicine,human win over and control a lots of infection sick,this make human being's health improve a lot.So human life prolong long and long.Today,the number of senior citizen become more greater The sick such as cardiopathy,cerebrovascular sick,cancer etc. threaten the health of human being. The atherosclerosis,diabetes mellitus lead to hemiplegia and paralysis which make people can't walk freely.At the same time ,with the number of vehicle become more greater,traffic accident lead to truncation of lower limbs.All of people like this need wheelchair.This is the question which will be solved in this paper.In this paper,we design the driver system of intelligent wheelchair by TMS320LF2407A DSP( Digital Signal Processor),which used BLDCM(Brushless DC Motor) replaced Brush DC Motor in tradition wheelchair.This design avoid complex structure,bad security,easy excursion from zero,spark and noises etc. in tradition wheelchair because of passivity touch between machine electric brush and commutator.This improved controll capability and precision in wheelchair.So it will benefit to handicapped.It is a mechanical and electric system for the driverr system of intelligent wheelchair.In this paper,at first ,the structure of the driver system is analysed .Then,the mathematical model of the system is designed.Accord to the parameter in electric wheelchair of international standard,logical parameteres were calculated and fixed on.The third,parts of an apparatus were chosed by the parameteres. The driver system was simulated and emulated by the softwere of Matlab/Simlink,the controlled paremeteres of PID were filtered once and again.At last,the system's hardware was designed,compiled programme by assemble language and C.The conclusion had been educed.It will be base for farther investigation.This is the driver module for intelligent wheelchair,other modules will been solved by others.