DC motor brush position calibration device

A DC motor, brush position technology, applied in the direction of using electric devices, electromagnetic measuring devices, electric/magnetic position measurement, etc., can solve the problems of time-consuming brush position adjustment, discontinuous signal, poor safety, etc., to achieve structural Simple, continuous and stable signal, fast calibration effect

Pending Publication Date: 2019-01-22
HUAQIAO UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The DC induction calibration method needs a pulse (square wave) signal source, and the signal is not continuous and not stable enough; other calibration methods need to start the motor or even start the motor repeatedly, and some also need live operation, and the adjustment of the brush position takes a lot of time. High energy consumption and poor security

Method used

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  • DC motor brush position calibration device
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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0018] see figure 1 with figure 2 As shown, a DC motor brush position calibration device of the present invention includes a DC motor M to be calibrated, a transformer T and a measuring instrument I; the measuring instrument I is used to measure current and / or voltage; the excitation coil of the DC motor M Terminals B1 and B2 are respectively connected to the output terminals of the transformer T; the armature winding terminals S1 and S2 of the DC motor M are respectively connected to the two ends of the measuring instrument I; when calibrating, release the DC motor Fasten the bolts of the brush holder, turn on the power supply of the voltage regulator, and slowly rotate to adjust the angle of the brush. When the brush is on the neutral line, ...

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Abstract

The invention discloses a DC motor brush position calibration device. The device is mainly applied to the field of electric equipment manufacturing and comprises a to-be-calibrated DC motor, a transformer and a measurement instrument, wherein the measurement instrument is used for measuring current and/or voltage; an excitation coil terminal of the DC motor is connected with an output of the transformer; an armature winding terminal of the DC motor is connected with the measurement instrument; and during the calibration, a brush frame fastening bolt of the DC motor is loosened, a power supplyof a voltage regulator is turned on, rotation is carried out to regulate the angle of a brush, and when the measurement instrument expresses a minimum number which is close to zero, the position of the brush is a neutral line position and the calibration is finished. Compared with traditional devices/methods for calibrating brush positons, the device is simple in structure, safe and rapid to operate, continuous and stable in signal, high in calibration speed and high in precision.

Description

technical field [0001] The invention relates to the field of electrical equipment manufacturing, in particular to a DC motor brush position calibration device. Background technique [0002] The development of DC motors has a history of hundreds of years, and its design, development and manufacturing technologies are becoming more and more perfect. Due to the advantages of good starting, speed regulation and overload performance, DC motors are widely used in machinery manufacturing, mining, metallurgy, textile printing and dyeing, papermaking, printing, chemical industry, transportation and household appliances and other fields. [0003] During the factory test of DC motors, the position calibration of the brushes is very important. If the brushes are not at the neutral line position, the efficiency of the motor will be reduced, the heat will be serious, the forward and reverse performance will be different, and there will be a gap between the commutator and the brushes. Ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/00
CPCG01B7/003
Inventor 彭长青尚荣艳方瑞明
Owner HUAQIAO UNIVERSITY
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