Design And Optimization On The Control System Of Precision Magnetorheological Finishing Machine

Magnetorheological Finishing(MRF) is an effective optical machining method, which can achieve ultra smooth, high precision optical parts machining without subsurface damage. Xi’an Technological University proposed the method of ring-type Magnetorheological polishing, which has higher processing efficiency and eliminates high-frequency error of optical element surface, the requirements for the accuracy of machine tools mechanical structure are relatively low. The thesis discussed design and optimization on the control system of precision Magnetorheological Finishing machine developed by Xi’an Technological University.The thesis introduced the principle and structure of MRF machine, the specific programs of hardware control and software design. Then according to the different modules of MRF machine control system, the function and assignment were detemined. The mathematical model was presented and the specific motion control method was discussed.In this thesis, a set improvement scheme of high-speed counter module joint grating to achieve accurate positioning was developed, by analyzing the characteristic of the structure of the original servo control system, and a set improvement scheme which fits for a and β angle was proposed according to the characteristic of the optical surfaces which was machined by MRF machine, and the design implementation process was introduced.In this thesis, aimed at two modes of manual and automatic control, the overall software scheme was made and the main program and subroutines were designed. The paper also designed a complete monitoring system of MRF machine, which helped achieve a real-time system monitoring and system maintenance.This thesis gave a brief planning of touch panel interfaces according to the functional requirements of human-computer interaction, determine the relationship between each interface, and to design a functional touch panel could satisfied many operational requests.The improvement control system which is very stabile and reliable was obtained, and it can satisfy all the control requirements by simulation and online debugging. According to the practical usage, the control system is demonstrated to be very reliable and stable, and satisfies all the practical production requirements, thus this work lays a valid basis for the future MRF equipment manufacturing.