Straight stroke actuatorBy driving the screw nut mechanism or gear transmission device with a motor, the rotational motion of the motor is converted into linear displacement, thereby driving the controlled objects such as valves and dampers to perform linear motion, achieving precise control of parameters such as opening and flow rate. According to the driving mode, it can be divided into three types: electric, pneumatic, and hydraulic. Among them, electric linear actuators have become the mainstream choice in the industrial field due to their high control accuracy, fast response speed, and ease of integration into automation systems.
Straight stroke actuatorCore components:
Motor: As a power source, its type (AC/DC), power, and speed directly affect the performance of the actuator. High performance motors, such as rare earth permanent magnet synchronous motors, have anti blocking and multi-stage speed regulation functions, and can adapt to complex working conditions.
Transmission mechanism: Gear or chain transmission device converts the high speed and low torque of the motor into low speed and high torque, meeting the torque requirements for valve opening/closing.
Motion conversion mechanism: Ball screws have become the mainstream choice due to their high efficiency, high precision, and long lifespan; Sliding screws are suitable for cost sensitive scenarios.
Feedback system: Position sensors (such as high-precision multi turn potentiometers) monitor the actuator position in real-time, with a resolution of up to 0.4%, ensuring control accuracy; Speed sensors can monitor operating speed and optimize dynamic response.
Control system: integrates servo amplifiers, microprocessors, etc., processes feedback signals, adjusts motor output according to preset programs (such as PID algorithm), and achieves precise control.
Shell: protects internal components while providing support and connection. The protection level (such as IP55) needs to adapt to the working environment and prevent dust and moisture from entering.