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Frequency coefficient correction method of inductor

A frequency coefficient and inductor technology, applied in the field of frequency coefficient correction of inductors, can solve the problems of inconsistency and high inductance value accuracy requirements, and achieve a wide range of effects.

Inactive Publication Date: 2019-11-12
HUNAN INST OF METROLOGY & TEST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the standard inductor is a physical instrument for detecting inductance meters of various grades, it has high requirements for the accuracy of the inductance value. When working at a non-detection frequency, the inductance of the standard inductor will be inconsistent with the nominal value. Therefore, it is necessary to Standard inductors are corrected to improve accuracy

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  • Frequency coefficient correction method of inductor
  • Frequency coefficient correction method of inductor
  • Frequency coefficient correction method of inductor

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Embodiment Construction

[0038] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0039] The invention discloses a method for correcting the frequency coefficient of an inductor. The method is as follows: figure 1 shown, including the following steps:

[0040] S1. Zero-adjust the measurement and display equipment, that is, the signal generator and the lock-in amplifier LIA;

[0041] S2. Connect the measurement circuit:

[0042] according to figure 2 The signal generator is connected to the inductor and the sampling resistor Rs in turn through the shielded coaxial line, and the lock-in amplifier LIA is connected to the sampling resistor Rs to measure the voltage on the sampling resistor Rs; the natural frequency of the sampling resistor Rs should be ...

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Abstract

The invention relates to the induction field, and discloses a frequency coefficient correction method of an inductor. The frequency coefficient correction method comprises steps that: S1, measuring display equipment is reset; S2, a measuring circuit is connected; S3, the measuring circuit is adjusted, an angular frequency omega m when modulus of impedance reaching the maximum value is acquired; S4, an inherent capacitance of the inductor is calculated; S5, the frequency coefficient correction of the inductor actual value under a condition of non-detection frequency can be carried out; S6, therelative deviation of the inductor can be calculated, and within the maximum allowed deviation range, the accuracy of the inductor can be improved.

Description

technical field [0001] The invention relates to the technical field of inductors, in particular to a frequency coefficient correction method for inductors. Background technique [0002] The inductance describes the circuit parameters that cause the induced electromotive force effect in the coil or in another coil due to the change of the coil current. The standard inductor is a physical instrument for detecting inductance meters of various levels. According to different structures, it can be divided into wire wound Type standard inductors, network analog standard inductors and electronic standard inductors, among which wire wound standard inductors are the most common. [0003] When the standard inductor is used at the detection frequency, its nominal value or actual value can be used. For the standard inductor whose frequency characteristics are determined by the inherent capacitance, it can be used at the non-detection frequency specified in the technical conditions. The s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/26G01R35/00
CPCG01R27/2611G01R35/005
Inventor 柏文琦张遥奇向德李庆先刘良江王晋威朱宪宇熊婕
Owner HUNAN INST OF METROLOGY & TEST