Steps for controlling the piezoelectric valve with a Siemens positioner

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　　Siemens positioners use microprocessors to compare the set position with the target value. If the microprocessor detects a deviation, it uses a five-step switching program to control the piezoelectric valve, which in turn adjusts the flow rate of air entering the actuator’s air chamber. 　　Siemens positioners can be used to control angular actuators or pneumatic linear actuators, which enables their wide application in various fields; they are mainly used in industries such as pharmaceuticals and food processing ； Wastewater and water ； Chemical and petrochemical industries, power plants ； Fields such as glass and papermaking. 　　Siemens positioners use microprocessors to compare the set position with the target value. If the microprocessor detects a deviation, it uses a five-step switching program to control the piezoelectric valve, which in turn adjusts the flow rate of air entering the actuator’s air chamber. The specific five steps are: 1. Determine the positive or negative action mode of the Siemens positioner; 2. Determine the zero point and range of the Siemens positioner; 3. Determine the opening and closing time of the valve; 4. Determine the minimum positioning increment; 5. Optimize the transient response based on the actual conditions of the actuator