Research On The Modeling And Simulation Of The Pneumatic System Based On Amesim

Along with the rapid development of industry of pneumatic transmission and control, the performance of the system and the control accuracy put forward higher request. Using computer simulation technology, the performance of systems can be forecasted, the design cycle can be shorten, and the whole system can be analyzed and evaluated. So the purposes of optimizing system, shorting design cycle and improving the stability of system can be achieved.AMESim as IMAGINE company to develop a multi-disciplinary field complex system modeling simulation software, to provide users with a system of engineering design, user can complete platform in the same platform for complex multi-disciplinary field system is modeled and simulated on the basis of calculation and in-depth research. And it is based on the above advantages, This paper AMESim in pneumatic system modeling simulation application is studied.However, its pneumatic library has very few modules, and those modules are very simple, which is quite inconvinient to use. Firstly the paper uses its two development tools, namely AMESet and AMECustom, to construct more modules for those typical components and elements that are widely used in real pneumatic system, and the submodels for pneumatic control component, actuator component are created. Conservation law of mass,the state equation for ideal gas,thermodynamic equation and flow rate equation are used to establish first order differential mathematic model,and a special investigation on mass flow rate coefficient for different components are carried out to make the model more accuarate.Two mathematical modeling methods on pneumatic proportional system are presented. One method is by means of powerful Simulink nonlinear modeling function, built a firenew nonlinear model of pneumatic proportional position control system based on the proportional directional valve. According to utilized linearization tools of Simulink to linearly treat at concreted operating point for the system model, a more accurate mathematical model is attained in order to the basis for further research. The other method is using AMESim and Simulink co-simulation technology, building systems for the further simulation analysis,simulationed performance prediction results show, the details of the system can be considered at utmost. And by using the details of their respective advantages, two software has excellent control effect.Third, Basing on the simulation model, uses AMESim software to make fault simulation of pneumatic proportional position control system. Throughusing simulated the common failure of position system, btain fault simulation curve samples of common fault of the position system.Through fault simulation systems revealed a state of failure.Fourth is the method study of building up pneumatic system half-physicssimulation and check trial method. The paper adopts AMESim and MATLab real time simulation function,xPC Target station and pneumatic component to set up half-physics simulation system in order to realize pneumatic system half-physics simulation.