How To Control A Piezo Valve

Piezoelectric valve is one of the main products of our company. I wonder if you who have been following our website have a good understanding of piezoelectric valve? How to control piezoelectric valve? Pneumatic valve and piezoelectric valve are used together. Talk about how to control the piezoelectric valve!

The piezoelectric element in the intelligent valve positioner is a pneumatic reversing valve made by using the inverse piezoelectric effect. The bent part in the middle is a piezoelectric sheet composed of piezoelectric material, which will deform under the action of an electric field to realize the closing of the pneumatic valve. When a control electric field is applied, the piezoelectric sheet deforms and upturns. The upturned piezoelectric sheet closes the exhaust port, and the intake port communicates with the output port, which is equivalent to a 2-position 3-way reversing valve to control the closing of the pneumatic valve. . Piezoelectric materials have another feature. The deformation of piezoelectric materials is proportional to the intensity of the electric field applied to it. This feature can be used to make proportional pressure regulating valves.

Applying different voltages, the piezoelectric sheet produces different deformations. In this way, the three-lobe roots vacuum pump forms different proportions of airflow channels between the air inlet, output, and exhaust, so that the output air port can get different gas pressures. So as to continuously control the opening of the pneumatic valve. The intelligent valve positioner is equipped with a microprocessor. According to the deviation of the input signal and the position feedback signal, after pid calculation, the output digital signal acts on the piezoelectric valve to control the pneumatic signal to drive the actuator and change the valve opening to achieve Process control. The adjustment control signal and the position feedback signal from the feedback potentiometer are converted into digital signals after the microprocessor undergoes pid calculation to control the piezoelectric valve.