The control system of the electric butterfly valve is currently in the intelligent control stage
With the progress of other related technologies, the control system of the electric butterfly valve has undergone two changes, totaling three major development stages: mechanical control, electronic control and intelligent control. However, no matter what kind of control system, it generally includes three sub modules: air supply system (air source), control components (including software), and safety device (to ensure the normal operation of electric butterfly valve).
The air source and safety device of the three control systems will have some differences with the different control components, but their most fundamental difference lies in the control components. For the mechanical control system, its control components are mainly height control valves, which are used to automatically inflate and exhaust the electric butterfly valve to achieve the height control of the electric butterfly valve; The electronic control system is a qualitative leap forward compared with the mechanical control system. It uses the electronic controller (ECU) to collect the signals from various sensors, analyze the signals, and send the control signals to the actuator (mainly various solenoid valves), so as to control the electric butterfly valve; The intelligent control system is developed on the basis of the electronic control system with the help of today's automatic control theory. It mainly improves the software part of the ECU. It can not only control the height and stiffness of the electric butterfly valve, but also control the nonlinear characteristics of the electric butterfly valve by using control techniques such as fuzzy neural network.