Web-based Three-phase Circuit Experiment System,

This dissertation take the application of Internet in the long-distance control as research background, take accomplishment of three-phase circuit experiment in the distance as research purpose. Firstly, the dissertation discuss the current development of correlated subject around the world, the similarity and difference with these subjects, the unique characteristic and the value of application in the learn. Further more, the dissertation introduce the design of software and hardware of system. In hardware design, there expound the characteristic and control principle of computer parallel port, the design method and control principle of periphery control circuit. The software parts include ASP, SQL database, control program of parallel port etc. There insert the principle of cooperation of system hardware and software in the process of introducing the design of hardware and software. The experiment data collected by system is be disposed by Least square method that the contours fit, which adjust the non-linearity of experiment data. Finally, we analysis the design of hardware and software of system externally, put forward the disadvantage and limitation of system, and give the prospect of further optimization and improvement of system.