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A motor control circuit

A motor control and circuit technology, applied in the field of excitation or armature current control, etc., can solve the problems that the motor speed cannot be accurate, constant speed, smooth speed regulation, etc.

Inactive Publication Date: 2016-12-07
OCEANKING DONGGUAN LIGHTING TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a motor control circuit, aiming to solve the problem that the current control of the motor speed cannot achieve the effect of accurate, constant speed and smooth speed regulation

Method used

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Embodiment Construction

[0014] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0015] figure 1 The circuit structure of the motor control circuit provided by the first embodiment of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown, and the details are as follows.

[0016] A motor control circuit, the motor control circuit comprising:

[0017] Resistor R1, resistor R2, resistor R3, variable resistor L1, diode D1, diode D2, diode D3, capacitor C1, capacitor C2, inverter U1, inverter U2, battery BT, motor M1 and switch tube 100;

[0018] The positive pole of the battery BT is connect...

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Abstract

The invention belongs to the field of control circuits, in particular to a motor control circuit. In the present invention, the motor control circuit is composed of common discrete components. Resistor R2, variable resistor L1, diode D1, diode D3, capacitor C2, and inverter U1 form a multivibrator, which generates pulses, and the variable resistor The device L1 is used to adjust the duty ratio. The frequency and period of the pulse are variable with the duty ratio. The working voltage of the motor is adjusted through the change of the pulse to adjust the speed of the motor. The motor control circuit can control the motor speed accurately and constantly. Speed, smooth effect of speed regulation.

Description

technical field [0001] The invention belongs to the field of control circuits, in particular to a motor control circuit. Background technique [0002] As a common power device, motors are used in various industries to drive various actuators to work. [0003] At present, the duty cycle is mainly used to control the motor speed, specifically, the pulse width modulation is used to control the motor, which can achieve the purpose of controlling the motor speed. [0004] However, the current control of the motor speed cannot achieve accurate, constant speed, and smooth speed regulation, which will greatly affect the work and also affect the performance of the motor. Contents of the invention [0005] The purpose of the embodiments of the present invention is to provide a motor control circuit, aiming at solving the problem that the current control of the motor speed cannot achieve the effect of accurate, constant speed and smooth speed regulation. [0006] The embodiment of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P7/28
Inventor 周明杰刘金财
Owner OCEANKING DONGGUAN LIGHTING TECH