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A Design Method of RVDT Based on Black Box

A design method and black box technology, applied in the field of electronic information, can solve problems such as unknown parameters, inaccurate acquisition, difficulty in RVDT design, etc., and achieve the effect of simplifying the design

Active Publication Date: 2018-07-24
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0036] These parameters are either unknown or cannot be obtained accurately, which brings certain difficulties to the RVDT design

Method used

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  • A Design Method of RVDT Based on Black Box
  • A Design Method of RVDT Based on Black Box
  • A Design Method of RVDT Based on Black Box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] 1. According to a black box-based RVDT design method, a certain type of RVDT is designed, including the following steps:

[0065] 1) Design the prototype according to the parameters of each primary coil N1=60 turns and each secondary coil N2=113 turns, and press image 3 Arrange 2 primary coils according to Figure 4 Arrange 4 secondary coils according to Figure 5 , Image 6 Connect 2 primary coils and 4 secondary coils, measure the input and output characteristics, see Table 1;

[0066] Table 1 Input and output characteristics of RVDT prototype

[0067]

[0068] 2) According to the voltage value U corresponding to the maximum deflection angle of the RVDT prototype o =5.6782V and required output voltage U R_O =3.7V to design the actual number of turns required by the secondary coil

[0069]

[0070]

[0071] 5) According to the number of primary coil turns N 1 =60, the number of turns of the secondary coil N R_2 =74, for the convenience of engineering application, and accordi...

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PUM

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Abstract

The invention belongs to the technical field of electronic information, and relates to a black box-based RVDT design method. The design method of the present invention does not need to measure the relevant characteristic parameters of the designed RVDT housing, stator and collar wire, including air gap thickness, air permeability, and does not need to calculate the current density of the primary coil with a specific number of turns under a given voltage , drawing lessons from the black box test method, these parameters are reduced in the design, thus simplifying the design of RVDT.

Description

Technical field [0001] The invention belongs to the technical field of electronic information and relates to a black box-based RVDT design method. Background technique [0002] Sensors that can measure angular displacement include inductive synchronizers, gratings, magnetic grids, laser sensors, and rotary variable differential transformer angular displacement sensors (RVDT). Among them, RVDT is the most widely used in industry. Compared with other sensors, RVDT has the following advantages: it adopts a non-contact structure, has no contact, no noise, high sensitivity, high repeatability, high reliability, unlimited resolution, theoretical unlimited life, and good high frequency response. Due to its strong environmental applicability, in the field of aviation electronic control, RVDT has more and more applications and functions, such as the position of the engine fuel valve, the displacement of the rudder surface, the control rod command, and the opening of the solenoid valve. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/30G01D5/14H01F38/18
Inventor 杜永良
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA