Digital servo energy-saving controller for fume hood automatic doors

Abstract

The invention relates to the technical field of fume hood automatic door control equipment, and in particular to a digital servo energy-saving controller for fume hood automatic doors. The digital servo energy-saving controller comprises an MCU controller, a speed giving circuit, a voltage stabilizing circuit, a driving circuit, an inverter, a BLDC motor, a current detection circuit, an overcurrent detection circuit and a rotor position detection circuit, wherein the speed giving circuit is electrically connected with the MCU controller; a power supply is electrically connected with each of the voltage stabilizing circuit and the inverter; the voltage stabilizing circuit is electrically connected with each of the MCU controller and the driving circuit; the MCU controller is electrically connected with the inverter through the driving circuit; and the inverter is electrically connected with each of the BLDC motor and the current detection circuit. According to the digital servo energy-saving controller, the MCU controller is adopted to accurately control the working state of the BLDC motor, the motor rate tracking is high in speed and stable, and through a mechanical decelerator, higher power output can be obtained. Meanwhile, the digital servo energy-saving controller for fume hood automatic doors has the advantages of being simple in structure, long in service life, convenientto maintain and good in universality.

Description

technical field [0001] The invention relates to the technical field of control equipment for automatic doors of fume hoods, in particular to a digital servo energy-saving controller for automatic doors of fume hoods. Background technique [0002] The traditional laboratory fume hood automatic door motor is an AC clutch motor. The output power of the efficient flow asynchronous motor is only about 70% of the input power. The torque is transmitted to the drive shaft of the automatic door through the friction clutch, and the efficiency is only about 70%. Because some of its total efficiency is only about 40% to 50%. Therefore, it is particularly necessary to find a high-efficiency and easy-to-control energy-saving motor and control method. In recent years, the permanent magnet brushless DC motor has been the focus of research due to its small size and high efficiency. It has the advantages of simple structure, reliable operation, and no mechanical It has the characteristics of...

AI Technical Summary

Problems solved by technology

[0002] The traditional laboratory fume hood automatic door motor is an AC clutch motor. The output power of the efficient flow asynchronous motor is only about 70% of the input power. The torque is transmitted to the drive shaft of the automatic door through the friction clutch, and the efficiency is only about 70%. Because some of its total efficiency is only about 40% to 50%

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