Numerical calculation and experimental study on response characteristics of pneumatic solenoid valves

Abstract

In order to analyze the response characteristics of the solenoid valve in depth, the flow field of the solenoid valve is analyzed by means of the computational fluid dynamics, and the aerodynamic parameters that are difficult to be obtained by the traditional methods are obtained with software FLUENT. We also set up the mathematical model of the solenoid valve, including the aerodynamic model, the circuit model, the magnetic circuit model and the mechanical motion model. The calculation is completed in the Simulink, and the results of the calculation are analyzed. A set of the solenoid valve response characteristic test system is built, and the response characteristic parameters such as response time and maximum action frequency of the solenoid valve are tested. The experimental results are verified by comparing them with the simulation results. The final result shows that the response characteristics are basically irrelevant to the action frequency at a suitable working frequency. The open switching time of the solenoid valve decreases with the increase in the inlet pressure and the driving voltage and increases with the increase in the number of coil turns. The close switching time increases with the increase in the inlet pressure, the driving voltage and the number of coil turns.

Optimization Design of Magnetic Isolation Ring Position in AC Solenoid Valves for Dynamic Response Performances

“…The electromagnetic force-measurement device designed can obtain the force curve of the moving iron core in the whole process of moving, and the measurement resolution reaches 0.01 N. Currently, the measurement methods of response time mainly include the eddy current method, current-voltage analysis method, and displacement detection method, etc. [19,23]. Nevertheless, there is still a lack of equipment that is easy to implement and reliable in performance.…”

“…Currently, the measurement methods of response time mainly include the eddy current method, current-voltage analysis method, and displacement detection method, etc. [ 19 , 23 ]. Nevertheless, there is still a lack of equipment that is easy to implement and reliable in performance.…”

Position control of a pneumatic cylinder actuator using modified PWM algorithm

“…Adopting the approach of physical network modeling technique followed by many researches [11][12][13][14][15] , the dynamic equations for the pneumatic system in this research have been modeled and simulated using Matlab® Simscape toolboxes and discussed in details in [1] . The model has been validated by comparing the predicted dynamic behaviour of the system to the experimentally measured one.…”

“…Pneumatic drives are usually controlled by proportional or servo valves for high accuracy of position control. In these valves, continuous varying of the valve flow resistance leads to vary the airflow mass that enters into and out from the actuator [15] . On/off solenoid DCV is used here to control the varied flow discretely.…”

A predictive control method to improve pressure tracking precision and reduce valve switching for pneumatic brake systems

“…On/off solenoid valves are widely used because they are much cheaper and smaller compared with proportional valves [5,6]. Moreover, they have quick response because of their small airflow areas [7]. However, on/off solenoid valves are either fully open or fully closed [8,9].…”