Low-power digital phase-locked loop DC motor speed adjusting device

A digital phase-locked loop, DC motor technology, applied in the direction of excitation or armature current control, etc., can solve the problem of lack of good human-computer interaction interface, inability to accurately control the motor speed, affecting the speed control accuracy, etc., to achieve good human-computer interaction function. , Simple structure, low cost effect

Inactive Publication Date: 2016-08-24
TIANJIN VOCATIONAL INST
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AI Technical Summary

Problems solved by technology

[0002] At present, low-voltage and low-power DC motor speed control products on the market mostly use PWM open-loop control. The product controls the motor speed by adjusting a given voltage value with an external potentiometer. Temperature changes or component aging will affect the control accuracy of the speed and load changes. It has a great influence on the speed, cannot precisely control the speed of the motor, and does not have a good human-computer interaction interface

Method used

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  • Low-power digital phase-locked loop DC motor speed adjusting device
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  • Low-power digital phase-locked loop DC motor speed adjusting device

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Embodiment Construction

[0014] The implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0015] A low-power digital phase-locked loop DC motor speed control device, such as figure 1 Or as shown in 2, including the device shell, a liquid crystal display is installed on the top of the front panel of the device shell, and a set key for setting the motor speed and an up-adjustment key for the motor speed used in conjunction with the set key are arranged sequentially below the liquid crystal display And down key, power key and motor start key of the whole device, a power interface is provided on the left side wall of the device casing, and a motor drive interface for driving the motor and a motor drive interface for receiving and testing are respectively arranged on the right side wall of the device casi...

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Abstract

The invention relates to a low-power digital phase-locked loop DC motor speed adjusting device, which comprises a liquid crystal display screen, wherein the liquid crystal display screen is arranged on a housing; functional keys are arranged at the lower part of the liquid crystal display screen; a power interface is arranged in the left side of a shell; a motor drive interface and an encoding interface are arranged in the right side of the shell; a control circuit board is arranged in the shell and comprises a single chip microcomputer for reading set values of various keys; the single chip microcomputer is connected with the liquid crystal display screen, an encoder arranged on the motor and a phase-locked loop circuit respectively; the phase-locked loop circuit is simultaneously connected with the encoder and a drive circuit; and the drive circuit is connected with a DC motor. With the keys and the liquid crystal display screen as human-computer interaction equipment, setting of the rotating speed of the motor by a user is facilitated; with the single chip microcomputer as a core, the control flexibility on the rotating speed of the motor is improved; with the phase-locked loop circuit as the core, the set rotating speed is tracked by the output rotating speed of the motor; and the control accuracy on the rotating speed of the motor is improved.

Description

technical field [0001] The invention relates to the technical field of low-power DC motor speed regulation, in particular to a low-power digital phase-locked loop DC motor speed regulation device. Background technique [0002] At present, low-voltage and low-power DC motor speed control products on the market mostly use PWM open-loop control. The product controls the motor speed by adjusting a given voltage value with an external potentiometer. Temperature changes or component aging will affect the control accuracy of the speed and load changes. It has a great influence on the speed, cannot precisely control the speed of the motor, and does not have a good human-computer interaction interface. Contents of the invention [0003] The purpose of the present invention is to propose a low-power digital phase-locked loop DC motor speed regulating device for the deficiencies of the prior art. [0004] The present invention solves its technical problem and realizes by taking the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P7/06
CPCH02P7/06
Inventor 卫俊玲董春霞石梅香
Owner TIANJIN VOCATIONAL INST
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