Research On Three-dimension Demonstration Method For Electric Small Ball's Motion In Compound Field

Virtual Reality is a kind of computer system which can create and experience Virtual World. By relative facilities, a three-dimension (3-D) visual, hearing, and feeling can be experienced. Its goal is to implement real feeling and convenient interaction of human-machine (H-M). A Virtual Reality System is such one whose goal can be reached wholly or partly.VRML-Virtual Reality Modeling Language is a kind of graphic description language which can create 3-D models. It can achieve real effects by creating virtual scenes. It is the second generation Web programming language. It can makes the H-M interaction based on 3-D objects be realized on Web. Especially, it can change present limitations of interaction between network and user. It makes H-M interaction more convenient and flexible and virtual world's reality, interaction, dynamics come true completely.In this study, we investigate emulate demonstration experiment system of electric small ball motion in compound field, and has realized dynamical demonstration and real-time control of an electric small ball in the fictitious scene. MATLAB, Simulink, VR toolbox and VR editing machine have been combined organically in the design of this system. On the platform of MATLAB, dynamic control model, making up of Simulink and VR toolbox, has been set up. This model reads the scene of controlling from VR editing machine, and has realized the dynamic emulation control of physics demonstration experiment scene.The system makes VRML be applied in demonstration experiment teaching and network education. It also enlightens us to use VRML extensively in other teaching fields. With the development and application of science and technology, more and more high-techs will be used in teaching; this trend will offer wild space for VRML's application in modern education.