基于arm的液压扳手泵控制器的分析word格式论文.docxVIP

优秀毕业论文 精品参考文献资料 Specialty : Electronics and communication engineering Name : Cui Hao-jun （Signature） Instructor : Ni Yun-feng （Signature） ABSTRACT Hydraulic wrench pump is the power source of the hydraulic wrench to tighten the bolts. Its output pressure accuracy directly affects the quality of the coupling bolt. Currently the hydraulic wrench pumps’ pressure is mainly controlled by relief valve control and uses mechanical pressure gauge to measure pressure on the market. This method has large error and low control accuracy. In order to improve the hydraulic wrench precise control of preload and preload, this article designs the hydraulic wrench pump controller based on ARM and Linux operating systems, and discusses the design and development process in detail. The controller uses the S3C2440 microprocessor and Linux embedded real-time operating system as the hardware and software development platform to design and develop which on the basis of in-depth study of a particular model a hydraulic wrench, summaries up the problems in the course of usage and combined with the development in the world. Selecting a specific electronic components on hardware for the controller which comprehensives consideration of factors such as system requirements, reliability, interfaces convenience. Analysing and transplanting BootLoader and Linux kernel of the S3C2440 processor on the software. And then writing each module drivers and system applications. The controller system has a lot of advantage such as a strong real-time ability, easy functionality expansion, system stability, to adapt to the environment ability. Compared with the original controller, the controller achieves the function of the automatic hydraulic wrench tightening and loosening bolts, uses LCD touch screen and graphical user interface to facilitate human-computer interaction. In addition, analysing the pressure control system detaily. Establishing the mathematical model of the pump system, determining the acc