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A capacitor plate adjustment device and method

A capacitor plate and capacitor technology, which is applied in the direction of using electrical devices, measuring devices, and electromagnetic means, can solve the problems of low reliability of the adjustment method of capacitor plates.

Active Publication Date: 2021-05-11
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a device and method for adjusting and installing capacitor plates in order to solve the problem of low reliability of the adjustment and installation methods of existing capacitor plates

Method used

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  • A capacitor plate adjustment device and method
  • A capacitor plate adjustment device and method
  • A capacitor plate adjustment device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1 provides a capacitor plate adjustment device, which is used to adjust the parallelism and / or coaxiality between capacitor plates in capacitive displacement sensing, such as figure 1 As shown, including capacitance plate unit, capacitance test unit, mobile adjustment unit;

[0046] 1. The capacitive plate unit includes a first capacitive plate 1 and a second capacitive plate 2 placed oppositely; wherein, the first capacitive plate 1 includes four capacitive detection areas, and the four capacitive detection areas are respectively Symmetrically distributed on the X-axis and / or the Y-axis; the second capacitive plate 2 includes a total of two capacitive detection areas, the first capacitive detection area and the second capacitive detection area, wherein the first capacitive detection area is an external capacitor, and its There is at least one set of orthogonal symmetry axes, and the second capacitive detection area is an internal capacitance, which is adjace...

Embodiment 2

[0054] Embodiment 2 is a modification of Embodiment 1. The difference is that a control circuit, four four-degree-of-freedom movement adjustment structures 7 and four drive motors are added to the movement adjustment unit, and the input end of the control circuit is connected to the capacitor. The output terminals of the differential signal measuring instrument, the four output terminals of the control circuit are respectively connected to the input terminals of the four driving motors, and the output terminals of the four driving motors are respectively connected to the input terminals of the four four-degree-of-freedom mobile adjustment structures 7. The output ends of the four four-degree-of-freedom moving adjustment structures 7 are all fixedly connected to the first capacitor plate 1 . It should be noted that the four-degree-of-freedom moving adjustment structure 7 can be directly obtained from the market, and the corresponding products can be purchased according to actual...

Embodiment 3

[0057] Based on the above embodiments, this embodiment 3 provides a method for adjusting and installing capacitor plates, such as Image 6 As shown, the following will describe the general process of parallelism adjustment and coaxiality adjustment:

[0058] First, adjust the parallelism between the first capacitor plate 1 and the second capacitor plate 2:

[0059] A0. Preliminary adjustment, so that the center of the first capacitor plate 1, the projection on the second capacitor plate 2 falls on the internal capacitance of the second capacitor plate 2; the internal capacitance on the second capacitor plate 2, The external capacitor is connected, and then connected to the capacitance test unit;

[0060] A1. Generate positive and load wave signals and input them into the first capacitor plate 1, so that the first capacitor plate 1 and the second capacitor plate 2 form a differential capacitance;

[0061] A2. The capacitance testing unit performs filtering and amplification p...

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Abstract

The invention discloses a capacitor plate adjustment device and method, which are applied to adjust the parallelism and coaxiality between capacitor plates in a capacitive displacement sensing device, including a capacitor plate unit, a capacitance test unit, a moving adjustment unit; the capacitive plate unit includes a first capacitive plate and a second capacitive plate oppositely placed; the first capacitive plate includes four capacitive detection areas, and the second capacitive plate includes two capacitive detection areas, when the two When the two capacitance detection areas are electrically connected, they form four independent capacitances with equal area and unequal spacing with the four capacitance detection areas of the first capacitance plate. Real-time testing of the capacitance test unit and real-time adjustment of the mobile adjustment unit realize the capacitance plate The parallelism between them is adjusted; when one capacitance detection area of ​​the second capacitance plate is grounded, the other capacitance detection area and the four capacitance detection areas of the first capacitance plate form four independent capacitances with equal intervals and different areas. Realize the adjustment of the coaxiality between the capacitor plates.

Description

technical field [0001] The invention relates to the technical field of capacitor plates, in particular to a device and method for adjusting and installing capacitor plates. Background technique [0002] Capacitive displacement sensor has the advantages of large signal-to-noise ratio, high sensitivity, small zero drift, wide frequency response, small nonlinearity, and convenient operation. It has a wide range of applications in physical measurement of displacement, acceleration, and pressure. High-precision sensor technology It is an inevitable choice for the high development of science and technology. [0003] Among them, the adjustment of the capacitive plates in the capacitive displacement sensor is an important factor affecting the overall accuracy of the capacitive displacement sensor. For the coaxiality and parallelism between the two capacitive plates, most of them are evaluated by human eyes to adjust the two capacitive plates. position, this adjustment method that r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/30G01B7/312G01B7/02
CPCG01B7/02G01B7/30G01B7/312
Inventor 李祝邹恕黄祥青张宪刘祺杨山清涂良成
Owner SUN YAT SEN UNIV
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