Design Of Multifunctional Experimental Platform For Fully Digital Motion Control System

Motion control system, with the characteristics of high practice, rapid update and great teaching difficulty, etc, is the core curriculum of electrical automation major in college. Designing a high open experimental platform fitting for teaching which is matched with the present contents of teaching is necessary, and on which the integrated and designing experiments can be carried out. At the same time, the technologists researching to motion control system are becoming more and more in recent years. In order to verify a new control scheme or algorithm, lots of manpower and material resources are spend on building an actual system, so that the research efficiency is greatly reduced. For these reasons, it is with practical application values to develop a multifunctional, open and fully digital experimental platform for motion control system.In the thesis, with DSP-TMS320LF2407A as the core controller, an open and fully digital experimental platform for motion control system which takes master-slave computer architecture and faces with DC, AC, PMSM and BLDC, etc, is proposed. The whole design scheme of the experimental platform is given out. The PC takes charge of task management, parameter regulation and curve display. The DSP executes the control program of the motor and auxiliary functions.The design scheme of hardware for DSP control system is particularly introduced, including the makeup and the design flow of IPM power conversion circuit, the minimum system of DSP, the current detection circuit, D/A conversion circuit, communication interface circuit and control panel, etc. Concentrating on AC motor, the program of open-loop V/F variable-frequency-adjustable-speed system based on three modulation methods and the program of close-loop slip frequency vector control system are both developed. The program is composed of module structures, and is suit for extending.Through lots of experiments carried on the platform, the results show that the research and development for many kinds of motor motion control system which is with high openness, multifunction, and excellent operating interface, is feasible and that the platform is with extensive practical application foreground.