No-load parameter detecting device for DC motor

A technology of parameter detection and DC motor, applied in the direction of motor generator testing, etc., can solve the problems of easy introduction of errors, randomness of waveform generation, etc., and achieve the effect of increasing test accuracy, simplifying signal processing operations, and removing harmonic content

Inactive Publication Date: 2017-04-26
HARBIN INST OF TECH
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Problems solved by technology

Research has proved that due to factors such as motor rotor slotting, air gap eccentricity, and load oscillations in the actual use of the motor, the signal processing in the time domain is not a simple sine wave, and the waveform generation is random, which is very easy to introduce errors

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  • No-load parameter detecting device for DC motor

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0033] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0035] like figure 1 As shown, the no-load parameter detection device of the DC motor in this embodiment includ...

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Abstract

The invention provides a no-load parameter detecting device for a DC motor and belongs to the field of motor no-load parameter detection, and solves the inconvenient use of a current switching operation order pallet in special circumstances. The no-load parameter detecting device comprises a frequency-domain signal acquisition module, a motor no-load starting voltage detection module, a motor no-load starting current detection module and a motor no-load speed measuring module. The frequency-domain signal acquisition module converts the operating current of the motor to be detected in a no-load state into a frequency-domain signal. The motor no-load starting voltage detection module and the motor no-load starting current detection module monitor the peak value of the frequency-domain signal. When the peak value exceeds a preset value, the supply voltage and the supply current are the motor no-load starting voltage and the motor no-load starting current respectively. The motor no-load speed measuring module selects the fundamental wave of the frequency-domain signal, reads out the frequency value of the fundamental wave, and obtains the motor no-load speed according to the frequency value and the number of pole pairs of the detected motor. The no-load parameter detecting device has the advantages of fast test speed, high measurement precision and low test error.

Description

technical field [0001] The invention relates to a no-load parameter detection device of a motor, in particular to a frequency domain analysis-based no-load parameter detection device of a DC motor, which belongs to the field of motor no-load parameter detection. Background technique [0002] Testing technology is an important link that cannot be completely bypassed in product development, performance testing, production supervision, and quality supervision. Especially in recent years, more and more advanced detection technologies have been applied to automatic control systems in engineering technology, and the important position of control systems has been tightly occupied by detection devices. At present, the instrument data is read manually, and then manually input for subsequent data operations. This method is cumbersome and inefficient. The current mainstream speed measurement technology is mainly divided into analog and digital detection methods, which are basically di...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/34
CPCG01R31/34
Inventor 关宇东张兴瑞郭倩韩媞提纯利冯健颖
Owner HARBIN INST OF TECH
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