The Study And Design Of Numerical Control System Based On DSP

Numerical control machine is an automatic machining tool with high flexibility and efficiency. Along with the development of production and technology, the use of numerical control machine is becoming more widespread. Numerical control systems are the critical parts of numerical control machines. The quality and efficiency mainly depend upon the functions and performance of numerical control systems. A good numerical control system is essential to the price and the market of the machine.This paper introduces a numerical control system controlled digitally by DSP controllers.Today's high-performance, low-cost digital signal processor controllers, such as the Texas Instruments' TMS320LF2407A, provide an improved and low-cost solution for numerical control system.Firstly it makes a brief introduction of the history of numerical control technology, the characteristic of numerical control technology, the object of the study and its developing tendence.Then introduce the composition of the system, interpolation theory, the application of DSP on motor control, the vector control theory of pernmanent magnet synchrouous motor and DSP control theory of direct-current brushless motor.Thirdly the structure design of numerical control system, hardware design of numerical system, including: the servo motor and its driver's choice, up and down CPU's choice, the interfaces, the powers, the clocks, the reset circuits; DSP preliminary software design and base children programs design.In the end of this paper, the conclusion of the study on DSP-based numerical control system is given, the prospect of numerical control system and some advices for further study is persented.The paper comes from actuality, being a typical mechanical and electrical thesis, it had some theory meanings and actual value, it is a good reference for the people who work on numerical control system.