Reseach Of The Digital Prototype Technology Of Electromagnetic Valve And Performance Simulation

The electromagnetic valve, which is widely used in the industrial process, is animportant industrial component. The number of the electromagnetic valve in a satelliteranges from a handful to more than dozens. If people design these valves, which are indifferent size but have similar structure, in the traditional way, the development efficiencywill be very low and the performance and security of the valves will hardly meet theaerospace application require at the first time because of all kinds of human factors.Digital design technology, also named functional prototype technology, is a kind oftechnology developed before the first physical prototype is built. This technology creates adigital model which is used to simulate, analyze and display graphically all kinds ofcharacteristics in the real engineering condition with computer technology. Then designerscan modify and get the optimized design from the model. This technology is developed onthe base of CAD/CAM/CAE technology and virtual prototype technology. The mainfunction of the digital prototype is three-dimensional modeling and performancesimulation. Three-dimensional modeling can have the physical model of electromagneticvalve digitized and this process can make the observation of the internal and overallstructure more easily. The meaning of performance simulation is simulating andcalculating all kinds of performance using the model built by the three-dimensionalmodeling. This process can help designers have a general judgment and estimate beforethey actually test the performance of the electromagnetic valve. Digital functionalprototype technology focuses on performance analysis and optimized design in the systemlayer. It contributes to reducing costs and improving efficiency by virtual test which canaccurately and quickly predict the system performance of the product tested.By far, digital prototype technology published in the literatures focuses ondigitization of physical model and operates simulation manually. They only integratesoftware together and clients will call the program conveniently. However, calculation and setting the parameters of software still need the operation of designers and this cannotembody the core advantage of digital prototype. This kind of digital prototype technologyhas not been used in design and development of electromagnetic valve.In order to enhance the efficiency of design and development and the securityperformance of electromagnetic valve, this paper develops a new kind of digital prototypeand combines it with many kinds of performance simulation software, basing on theprogram language Visual C++. This prototype makes it comes true that all the processes ofmodeling, performance simulation and optimization of structural parameters are fullyautomated and embodies the advantages of digital prototype to the utmost extent. Besides,this paper also verifies the reliability of the digital prototype by experiments. The maincontents are as follows:(1) Three-dimensional parametric modeling and auto performance simulation: themain reason why digital prototype can enhance the efficiency of development of theelectromagnetic valve significantly is the realization of parametric modeling and autoperformance simulation by redevelopment of software. This paper focuses on studying themechanism and process of redevelopment of software and redeveloping the Pro/E, Fluent,Maxwell and Ansys and making them possessed with function of parametric operation andbackground automatically call.(2) Performance simulation: researching and discussing the performance simulationinvolved in design and development of the electromagnetic valve. There are three aspects:flow simulation which inspects the flow resistance, electromagnetic simulation whichinspects the distribution of electromagnetism and structural simulation which inspects thestrength of structure.(3) Optimization of structural parameters: basic engineering calculations and digitalmodel of electromagnetic valve built can only meet the basic needs of the engineering.Optimizing the structure size can further enhance the working performance of theelectromagnetic valve, which makes it have better economic benefits. This paper makes thevolume of electromagnetic valve as the final goal of optimization, optimizes the size ofelectromagnetic valve using grid node searching method and gives a comparison ofperformance simulation results before and after the optimization, which validates thesuperiority of the digital prototype optimized.(4) The development of the digital prototype: this paper develops a new kind of digitalprototype with the program language Visual C++and combines it with many kinds ofsoftware. Besides, the program language Fortran also is used to calculate and optimize thestructural size of electromagnetic valve and the operation is practical and friendly. (5) Experiments validation: in order to verify the reliability of digital prototype, thephysical product of electromagnetic valve has been manufactured with thetwo-dimensional engineering drawing and tested with experiments. After the comparisonof experimental results recorded and the results from the performance simulation,something can be found that the error between performance simulation results andexperimental results within the acceptable range of works, which shows the reliability ofthe digital prototype of electromagnetic valve.