Abstract
Electromagnetic force is crucial to the performance of the micro digital valve. The bigger electromagnetic force is needed to improve the rapidity of the micro digital valve. In the light of the traditional electromagnetic structure, which layouts the spring at the middle of the electromagnet, a new electromagnetic structure which sets the spring at the top of the electromagnet is studied. The relevant parameters and material are researched in the paper. The cross-sectional area of air gas and the electromagnetic force have a positive correlation relationship. The bigger driving current and the more turn of coil can increase the electromagnetic force in a certain range. The magnetic field would get the saturated state while driving current get a bigger value. At the moment, the magnetic force would not increase. Influence of magnetic material and non-magnetic material for valve seat is tiny. Electromagnetic force has a little difference between the two installation shells in the process of demagnetization. The simulation model is accurate and reliable. Using the simulation model, the electromagnetic cross section area, the different shell materials and the magnetic saturation phenomenon are simulated.
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