The working principle of bus air-conditioning damper actuator

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The working principle of bus air-conditioning damper actuator 2020-07-14

The common damper actuator mainly decelerates through the micromotor transmission gear system, and then drives the output gear to rotate, outputting a certain speed and torque to drive the rocker arm. Its rotation position is controlled by a spring brush mounted on the output gear. The position of the spring brush on the circuit board determines the rotation angle. There are generally three kinds of control circuits. One is controlled by the transmission chip. This motor is mainly used On the mode damper; one is to determine the rotation position of the output gear by the feedback voltage. In this way, there is a carbon film on the circuit board, and the panel controls the angle through the feedback voltage value of the spring brush. This motor is generally used in the mode Or on temperature dampers, such motors are generally used on new return dampers.

In addition, the stepper motor is now also used in many HVAC. The stepper motor can work in a 360-degree range, and its control method is pulse control. All dampers can use stepper motors, so stepper motors are more suitable for platform products.

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