Closed-loop control system for reciprocating swing type motor in electric toothbrush

Abstract

The invention discloses a closed-loop control system for a reciprocating swing type motor in an electric toothbrush, which comprises a control module, a detection module, an operation module and a driving module, and is characterized in that the control module, the detection module, the operation module and the driving module are respectively in communication connection; the control module is used for inputting a swing adjustment instruction and logic information, generating voltage waveform information according to the swing adjustment instruction and the logic information, and sending the voltage waveform information to the driving module; the detection module is used for acquiring physical quantity information generated by a motor output shaft and sending the physical quantity to the operation module; the operation module is used for receiving the physical quantity information, calculating a real-time swing numerical value of the motor according to the physical quantity information and outputting the real-time swing numerical value of the motor; and the driving module is used for receiving the voltage waveform information and adjusting the output power of the motor according to the voltage waveform information. The structure has a good control feedback effect, the output swing of the motor is effectively kept, and the use experience of a user is ensured.

Description

technical field [0001] The invention relates to the technical field of electric toothbrushes, in particular to a closed-loop control system for a reciprocating oscillating motor in an electric toothbrush. Background technique [0002] Electric toothbrush is a new product that has become popular in recent years, and has set off a revolution in the field of oral health care abroad. With the widespread popularity of electric toothbrushes in my country, and with the improvement of people's awareness of it, electric toothbrushes will also become an important member of public health care products. The survey shows that compared with ordinary toothbrushes, electric toothbrushes are more scientific and effective, and can more thoroughly remove plaque, reduce gingivitis and gingival bleeding. Electric toothbrushes use the rapid reciprocating rotation of the motor output shaft to generate high-frequency vibration of the brush head. , so as to instantly decompose the toothpaste into f...

AI Technical Summary

Problems solved by technology

The survey shows that compared with ordinary toothbrushes, electric toothbrushes are more scientific and effective, and can more thoroughly remove dental plaque, reduce gingivitis and gum bleeding. Electric toothbrushes use the rapid reciprocating rotation of the motor output shaft to generate high-frequency vibrations on the brush head , so that the toothpaste is decomposed into fine foam in an instant, and the teeth are deeply cleaned; currently, the drive motor in the electric toothbrush usually uses a reciprocating swing motor, and the high-frequency AC signal is used to drive the motor to rotate and swing. Due to the internal magnetic circuit of each motor, There is a certain difference in the impedance of the coil, which leads to a certain degree of discreteness in the swing angle and driving force of the motor when it is working, and when the toothbrush is working, different people will use different pressures, resulting in different swings of the motor under various loads. piece

Because the existing motor lacks an output feedback mechanism, the rotation angle of the motor output shaft cannot be well determined, so that the current electric toothbrush cannot adjust the swing angle according to the need, so that the swing amplitude is constant or adjusted on demand, which greatly reduces the toothbrush. At the same time, due to the lack of feedback mechanism, it will affect the development and use of subsequent toothbrushes and reduce the user experience

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