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The working principle and components of electric actuator

The electric actuator consists of two parts: the actuator and the regulating mechanism (also known as the control valve). The main difference is that the actuators are different, as the type and structure of the coordination mechanism for each actuator are roughly the same. The regulators all use various general-purpose control valves, which are beneficial to both production and use.

The actuator is the push device of the actuator, which generates appropriate thrust according to the size of the control signal and drives the coordination mechanism to move. The adjustment mechanism is the adjustment part of the actuator. According to the thrust of the actuator, the adjustment structure will produce a constant displacement or rotation angle, and directly adjust the flow of the fluid.

The electric actuator is an important part of the electric adjustment system. Receives the 4~20m ADC signal output from the electrical controller and converts the adjustment mechanism into the appropriate force or torque for operation to continuously adjust the fluid flow in the pipeline during production. Of course, the electrical implementation can also adjust materials, energy, etc. during the production process for automatic adjustment. The electric actuator consists of two parts: the electric actuator and the adjustment mechanism, and the part that converts the control signal of the electric controller into force or torque is called the electric actuator. Various types of control valves or other similar regulating devices are collectively referred to as regulating organs.

Electric actuators are simple and complex, depending on the usage requirements. The simplest is the electronic stone on the solenoid valve, in addition to that, the electric motor is used as the power element to drive the adjustment mechanism. The most commonly used control valves for regulating mechanisms are identical to those used for pneumatic actuators.

The electric actuator and the regulating device are connected in various ways, and both are fixed on the instrument to form a complete actuator, such as solenoid valve, electric control valve, etc. Linear travel, angular travel, multi-rotation electric actuators, etc., are also useful for connecting the two in situ.

The electric actuator also realizes the mutual switching between automatic operation and manual operation of the control system through the electric actuator. When the operator's toggle switch is tangent to the "manual" position, the power to the servo motor can be directly controlled by the forward/stop/reverse three states of the output shaft and the forward and reverse buttons of the manipulator for remote control of motion. The handle of the actuator can also be rotated to operate directly on site. The electric actuator receiving 4 ~ 20m ADC signal is a position servo mechanism driven by two-phase asynchronous servo motor. According to the installed coordination mechanism, there are three output methods: linear stroke, angular stroke and multiple rotations. The configuration and working principle are the same as the reducer.