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Part-Turn Electric Actuator Widely Used
- Jul 07, 2017 -

Valve is an important part of pipeline transportation system, widely used in electric power, chemical, petroleum and metallurgical industries, Part-Turn Electric Actuator the system pressure, flow and temperature and other parameters to adjust. Electric actuator is an important device to control and drive the valve, Part-Turn Electric Actuator is the valve to achieve remote control, centralized control and automatic control of an indispensable implementation of components. With the development of electromechanical integration technology, Part-Turn Electric Actuator electric actuators in industrial production reflects a huge advantage. Part-Turn Electric Actuator Reliable operation of the valve electric actuator is inseparable from the detection module, good performance and stable operation Reliable detection module is essential for the safe and stable operation of the valve electric actuator.

Valve electric actuator (Figure 1) mainly by the man-machine interface, controller, electric actuator and detection module. The man-machine interface mainly includes liquid crystal display, key input and remote control input. The electric actuators mainly include digital signal processor (DSP), Part-Turn Electric Actuator intelligent power module (IPM) and asynchronous motor. The detection module includes power detection, Part-Turn Electric Actuator motor detection and valve inspection.

The man-machine interface can set the operating parameters, send control signals to the controller, and display all kinds of information feedback from the device to complete the real-time monitoring of the system. The controller receives the control signal sent from the man-machine interface, Part-Turn Electric Actuator controls the operation of the electric actuator according to the control signal, real-time detects the feedback signal of the position and the stroke of the valve, adjusts the corresponding control instruction, Part-Turn Electric Actuator and the controller can send the control command to the man- Working status and fault diagnosis signal. Electric actuator is the main actuator, DSP receiver controller instructions, through the vector control technology to drive the asynchronous motor, Part-Turn Electric Actuator the motor output shaft after the gears by dragging the valve opening and closing.

The detection module detects the working status of the power supply, the motor and the valve respectively, and transforms the detected signals into digital signals which can be recognized by the controller. Power supply detection mainly for power phase detection, asynchronous motor drive voltage and current detection, IPM module temperature detection. Motor detection is mainly carried out motor speed detection, Part-Turn Electric Actuator motor rotor position detection, torque detection, motor and gearbox temperature detection. Valve detection is mainly carried out valve position detection, valve stroke detection. Power supply detection and motor detection signal feedback to the DSP for processing, Part-Turn Electric Actuator valve detection signal feedback to the controller MSP430 for processing.

The detection function is mainly realized by the detection circuit and the DSP in the main controller and the electric actuator.

The main controller uses 16-bit ultra-low power, Part-Turn Electric Actuator streamlined instruction set MCU MSP430. SCM should be able to deal with strong, Part-Turn Electric Actuator fast operation, on-chip integrated FLASH memory, 16-bit A / D and communication interfaces.

Electric actuator DSP using fixed-point 32-bit chip TMS320F2812. Part-Turn Electric Actuator The chip should be capable of computing and has a rich set of peripherals.

The detection module of the electric actuator of the valve takes full account of the actual environment of the industrial scene in the hardware and software design of the system, adopts the perfect anti-jamming measures and the fault protection measures, Part-Turn Electric Actuator and greatly improves the system reliability so that the system can be applied to Various industrial scene environment.