Intelligent electric control valve

Such control valve with intelligent servo amplifiers, digital operation, the gear box, valve position detection transmission device and electric control valves and other components. With the General electric control valve The main difference is the use of intelligent servo amplifier. pneumatic accessory
The intelligent servo amplifier is a micro computer, it receives standard analog current or voltage signal by the analog-to-digital converter into a digital signal, the input signal and set by the microprocessor will signal comparison, the control law according to a certain operation, the output signal the electric control valve is driven by a digital-to-analog conversion. Similar to the pneumatic control valve works with smart valve positioner, smart electric control valve The main difference is the use of electric control valve Therefore, the output signal sent to the motor (single-phase or three-phase motor) and change after deceleration devices electric valve opening. The intelligent electric valve is used to set the nonlinear characteristics of the circuit to compensate for the controlled object nonlinear characteristic, therefore, to avoid the nonlinear feedback loop caused by the control system instability. The same time, due to the use of digital nonlinear compensating, therefore, can be determined according to the control valve pressure drop ratio and the required work flow characteristics nonlinear compensating links point position of each fold line.pneumatic fitting