Modeling and simulation of key characteristics of micro gas flow regulating valve

Regarding the problems of micro gas flow regulating valve, including micron assembly, precise trim of the valve spool and dynamic sealing of the valve port, if we do not master its working principle and simulation method, it is challenging to optimize better products just using a large number of experiments. Herein, the flow regulating valve is modeled theoretically by using the circuit model, magnetic circuit model, dynamic model, and nozzle model with the help of MATLAB software. The simulation and analysis includes the study of the dynamic characteristics, voltage displacement characteristics, and voltage flow characteristics of the valve spool, along with the effect of preload height, air gap height, stiffness coefficient, and temperature on the key characteristic of the flow regulating valve. The experimental results are consistent with the simulations, indicating that the model developed in this paper is accurate and the simulation results are reliable. It can be used for the iterative design and optimization of flow regulating valves, as well as in the assembly of flow regulating valves and the fine-tuning of their characteristics in the manufacturing process.