Research On Open Architecture Liner AC Servo System Based On PC

A PC- based open architecture AC servo system is studied in this paper. Its background, property and advantage are discussed in detail. Open architecture AC servo system is a system of modularization, recombination and expansion. Its core is opening, namely the system is established on the PC platform of general using system construction, and the module is independent each other. The opening of system can make the user embedding advanced control strategy and individuality module in it. Connect agreement of each module is clear and definite, which can make every kind of applied system operating effectively on platform of different supplier. The system has characters of interconversion, retractility, transplant, interplay and enlargement.The design project of PC-based open architecture AC servo system is introduced in this paper firstly. In the design of hardware platform, the Industry Control PC and its I/O periphery interface card are selected. The choice of software exploitation environment and programme language are accomplished in the design of software platform. The function of a graphics language LabVIEW and the basic design principle of system software are introduced and then some capability test of I/O periphery interface card in the LabVIEW is accomplished.This paper researched the realization of PC-based linear AC servo system after hardware and software platform are confirmed. The hardware circuit of the system is designed, which includes sensors and power-driving module. The paper presents compound measure method of magnetic pole position based on position sensor of Hall switch and grating ruler, which realized the precision orientation of magnetic pole position and ensured the performance of vector control.The program of the magnetic field orientated control of linear motor based on LabVIEW language is given. Program structure of standard modularize design is adopted, which mainly consists of panel module, current sampling module, velocity and position calculate module, vector commutation module, PI adjust module, fault handle module, SVPWM produce module. PID control arithmetic of integral detached is used in the design of PID controller.With the development of PC software and hardware technology, the performance and opening degree of PC- based open architecture AC servo system will be further perfection and improvement that have the extensive applied foreground.