A motor noise reduction control circuit and method applied to an intelligent clothes dryer

Abstract

A motor noise reduction control circuit applied to an intelligent laundry machine, including an MCU controller, a phase voltage phase detection module, a current phase detection module, a first and a second drive circuit and a first and a second thyristor; the first , The second thyristor is respectively connected between the AC power supply of the motor and the forward and reverse voltage input terminals of the motor; the MCU controller inputs the phase voltage phase detection signal output by the phase voltage phase detection module and the phase voltage phase detection signal output by the current phase detection module The current phase detects and processes the signal, outputs the first control signal to the first drive circuit, controls the conduction angle of the first thyristor, thereby controls the input voltage of the forward rotation of the motor, or outputs the second control signal to the second drive circuit , to control the conduction angle of the second thyristor, thereby controlling the input voltage for motor reversal. The invention also proposes a motor noise reduction control method applied to the intelligent laundry machine. Even if the motor runs under light load, the present invention does not increase the torque and running speed of the motor, and has low noise.

Description

technical field [0001] The invention relates to a motor noise reduction control circuit applied to an intelligent clothes dryer and a method thereof. Background technique [0002] With the development of the smart clothes dryer industry, AC tubular motors are widely used to realize the lifting function of smart clothes dryers. At present, the traditional control methods of AC tubular motors are all controlled by relays, and the control mode of direct start relays is used to drive the AC tubular motors. , no matter the load of the motor is light load or heavy load, the relay works at full voltage, under the rated load, the AC tubular motor runs stably with little noise, under light load, the torque of the AC tubular motor increases under the full voltage , the line speed increases, while the motor running speed increases, causing the motor noise to increase. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior...

AI Technical Summary

Problems solved by technology

[0002] With the development of the smart clothes dryer industry, AC tubular motors are widely used to realize the lifting function of smart clothes dryers. At present, the traditional control methods of AC tubular motors are all controlled by relays, and the control mode of direct start relays is used to drive the AC tubular motors. , no matter the load of the motor is light load or heavy load, the relay works at full voltage, under the rated load, the AC tubular motor runs stably with little noise, under light load, the torque of the AC tubular motor increases under the full voltage , the line speed increases, and the motor running speed increases, which causes the motor noise to increase

Images