Research On Embedded Intelligent Apparatus For Magnetization And Demagnetization Based On RTLinux

Nowadays, the magnetic material has been widely used in electronic, information,communication, medical treatment and other industries, and becomes the basic mate-rial in the fields of electrical engineering, automobile industry, bio-engineering and soon, then it has good prospects for market. It is the key of production and developmentof permanent magnet devices, which achieves the function of charging and discharging,and its application has been strengthened. With the development of embedded tech-nology, computer technology and network technology, there is the way to the directionof high performance, low power, multi-function, and intelligence.In this paper, the apparatus for magnetization and demagnetization is designedin the demands of high-precision for the symmetry and saturation of magnetic dis-tribution of NdFeB motor in practical engineering. Its development status, prospect,key technology, and application are analyzed. With the application of embedded tech-nology in the industrial areas, it is designed using hardware and software co-designmethod, which S3C2410 is the hardware core and RTLinux is the software platform. Ithas achieved the intelligent control of the process of magnetizing and demagnetizing,on-line measurement and calibration. Also, it has provided visual graphics and digitalinterface to magnetic pulse and properties.Its principle and realized approach is introduced, and system scheme is demon-strated from the angle of power supply, processor, and control mode, then systemarchitecture is presented. System hardware circuit structure and function modulesare introduced, including main circuit module, external basic circuit module, datasampling circuit module, constant current circuit module, and trigger circuit module,etc. System software architecture and its concrete implementation is also presented,including establishment of cross-compiler, RTLinux transplantation, development ofsome character device driver, establishment of QT/Embedded interface environment,application development, and the design of self-tuning PID controller, etc. After re-peated debugging, the desired objective has been basically achieved, and it gets theaccuracy of±1% for constant current. Now, it's in trial, the equipment will be furtherimproved by solving the hidden problems, and in-depth study will be made on thisbasis.The embedded intelligent apparatus for magnetization and demagnetization de-signed in this paper meets the need of development in automation, intelligence, andinformation, and further broadens the industrial application of ARM-Linux embed-ded technology. It has practical value to the development of the industry and relatedindustries.