Virtual Laboratory Of Automatic Control Theory Research And Development

The virtual experimental technology is generated with the development of computer technology, multimedia and network technology. Especially with the development of distance education, remote experimental teaching is gradually taken by the people. It can break restrictions of time and space effectively, researchers or students can study with peers, share or monopolizes equipments, share data and computer resources, get remote guidance of teachers. Because of the demand for distance education and traditional experiment defects, the development of virtual experiment using computer is of great significance.This paper introduces the development situation of virtual experiment and several virtual experimental technology, and then researches virtual experimental development based on MATLAB Web Server and discusses the advantages and disadvantages of this technique, presents the technology based on MATLAB and Flash, using Flash to simulate scene and MATLAB to compute and correspondence. The technology adopts the advantages of them and makes the scene more realistic. The subject constructs Automatic Control Principles virtual lab using Dreamweaver powerful web function, Flash powerful graphic processing function and MATLAB powerful drawing, computing and web functions. The construction of this lab includes web server configuration, virtual experimental circuit design, input documents creation, M-Files creation and output documents creation. The paper introduces structure and development of the lab. The lab has ten experiments, covering time and frequency domain analysis of linear system, root locus and series compensation of linear system, analysis of discrete and nonlinear system. At last the process of developing the virtual lab is introduced by two typical virtual experiments.The lab has lower software and hardware requirement of client, has advantages of easy expansion, maintenance and upgrading, also it has beautiful interface and simple operation. Every experiment has objection, theory and steps, also circuit diagram and virtual circuit, you can input parameters in parameter boxes and click submit button to get the results. The lab breaks the restrictions of time and space, students can do experiments at any time and any where, alter parameters repeatedly, it can deepen the understanding of knowledge and enhance the sets and the ability of innovate.