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An AC contactor contact pressure dynamic testing device and testing method thereof

An AC contactor, contact pressure technology, applied in measuring devices, force/torque/work measuring instruments, instruments, etc., can solve the problem of inability to accurately obtain the dynamic signal of the contact pressure of the AC contactor, and achieve a good human-machine Interactive operation interface, wide range of force measurement, high precision effect

Active Publication Date: 2015-10-07
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the existing technology cannot accurately obtain the dynamic signal of the contact pressure of the AC contactor, the present invention provides a device and a testing method for testing the dynamic signal of the contact pressure of the AC contactor using PVDF piezoelectric film

Method used

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  • An AC contactor contact pressure dynamic testing device and testing method thereof
  • An AC contactor contact pressure dynamic testing device and testing method thereof
  • An AC contactor contact pressure dynamic testing device and testing method thereof

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Embodiment

[0044] Embodiment: (detailed in conjunction with accompanying drawing):

[0045] The composition of AC contactor contact pressure dynamic testing device of the present invention is as follows: figure 1 As shown, it is divided into upper computer and lower computer; the upper computer is an industrial computer (6), and the lower computer includes: contact contact pressure sensor (2), charge amplifier (3), signal conditioning circuit (4), high-speed data acquisition card (5), closing phase angle controller (7); AC contactor (1) is the test sample.

[0046] The connection method is: the contact contact pressure sensor (2) is bonded to the contactor test object (1), the signal output end of the contact contact pressure sensor (2) is connected to the charge amplifier (3) through the shielded wire; the charge amplifier ( The output end of 3) is connected to the signal conditioning circuit (4) through a shielded wire; the output end of the signal conditioning circuit (4) is connecte...

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PUM

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Abstract

The invention discloses a device for dynamic testing of the contact pressure of a contact terminal of an alternating-current contactor. The device for dynamic testing of the contact pressure of the contact terminal of the alternating-current contactor comprises an upper computer and a lower computer, wherein an industrial personal computer serves as the upper computer, the lower computer comprises a contact terminal contact pressure sensor, a charge amplifier, a signal conditioning circuit, a high-speed data acquisition card and a closing phase angle controller, and the alternating-current contactor is a testing sample. The device can directly reflect the dynamic changing process of the contact pressure of the contact terminal, reflect the bouncing condition of the contact terminal more visually, and solve the problem of asynchronization of two contacts of the same touch bridge during closing. Contact pressure signals of the contact terminal can provide new data for the study of the dynamic parameters, such as the optimal closing phase angle, of the alternating-current contactor in the future, the intensive study of the relations between the contact pressure of the contact terminal and other parameters such as the contact resistance and the contact vibration at the moment of contact terminal contacting, and the optimization design of the alternating-current contactor.

Description

Technical field: [0001] The invention relates to a testing method and a device for dynamic characteristic parameters in the field of low-voltage electrical appliances, in particular to a testing method and a device for testing a contact pressure dynamic signal of an AC contactor. Background technique: [0002] AC contactor is an automatic electromagnetic device with large production volume and wide application. The mechanical parameters of AC contactor contacts mainly include contact opening distance, overtravel, contact pressure and asynchrony of main contacts. The contact pressure of the contact is divided into the initial pressure and the final pressure of the contact. It is one of the important contact parameters and has a direct impact on the performance of the electrical appliance. In order to deeply study the relationship between the contact pressure of the contact at the instant of contact and other parameters such as contact resistance and vibration, it is necessar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/00
Inventor 苏秀苹李俊峰陆俭国李胜利李文华乔愉程文
Owner HEBEI UNIV OF TECH
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