Pressure control electric device used for measuring contact resistance
A pressure control and electrical device technology, applied in the pressure control field of pressure control electrical device and contact resistance measurement, can solve the problem of inability to pressure closed-loop control, and achieve the effect of good pressure control accuracy and high stability
Inactive Publication Date: 2012-07-04
HOHAI UNIV CHANGZHOU
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Problems solved by technology
The contact resistance measurement for resistance spot welding needs to consider the influence of pressure factors on the contact resistance. It is necessary to measure the contact resistance under the condition of controllable pressure. However, the existing contact resistance measurement equipment does not have a pressure control device. During the contact resistance measurement process Real-time closed-loop control of pressure is not possible
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[0012] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0013] Such as figure 1 As shown, a pressure control electrical device for contact resistance measurement includes a pressurization device 1, an AC servo motor 2, an AC servo drive controller 3, a data acquisition card 5 and an industrial control computer 6, the pressurization device 1 Including a clamping device and a pressure sensor 4, the industrial control computer 6 sends control signals through the data acquisition card 5 to control the AC servo drive controller 3, the AC servo drive controller 3 controls the AC servo motor 2, and the AC servo motor 2 Control the pressurizing device 1, the pressure sensor 4 converts the pressure received by the clamping device into an electrical signal and sends it to the data acquisition card 5, and the data acquisition card 5 performs A / D conversion on the received electrical signal and then sends it to the industrial...
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The invention discloses a pressure control electric device used for measuring a contact resistance. The pressure control electric device comprises a pressure device, an alternating current servo motor, an alternating current servo driving controller, a data acquisition card and an industrial control computer, wherein the pressure device comprises a clamping device and a pressure sensor; the industrial control computer sends a control signal through the data acquisition card to control the alternating current servo driving controller; the alternating current servo driving controller controls the alternating current servo motor; the alternating current servo motor controls the pressure device; the pressure sensor converts the pressure of the clamping device into electric signals and transmits the electric signals to the data acquisition card; and the data acquisition card performs A / D conversion on the received electric signals and transmits the converted signals to the industrial control computer. The pressure control electric device can perform real time closed-loop control on the pressure when used for measuring the contact resistance and has a high pressure control precision andreliability.
Description
technical field [0001] The invention relates to a pressure control technology for contact resistance measurement, more specifically, relates to a pressure control electrical device for contact resistance measurement, and belongs to the field of automatic control. Background technique [0002] Resistance spot welding is widely used in aerospace, sheet metal, electrical manufacturing and other industries, especially the automotive industry that uses a large number of metal sheets. Contact resistance is one of the main factors affecting the fusion shape of resistance spot welding, electrode burning and spattering, and is the key factor that ultimately affects the quality of resistance spot welding. Therefore, it is very necessary to measure the contact resistance. The contact resistance measurement for resistance spot welding needs to consider the influence of pressure factors on the contact resistance. It is necessary to measure the contact resistance under the condition of c...
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IPC IPC(8): B23K11/36B23Q17/00G01R27/02
Inventor 郁中太包晔峰蒋永锋
Owner HOHAI UNIV CHANGZHOU