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A Space Vector Force Calibration Method

A technology of space vector and calibration method, which is applied in the direction of calibration/testing of force/torque/power measuring instruments, measuring devices, instruments, etc., which can solve problems such as the inability to realize space vector force calibration, and achieve the effect of improving measurement accuracy

Active Publication Date: 2020-01-14
AECC SICHUAN GAS TURBINE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing domestic vector stage calibration technology is limited to the calibration of a single direction in three directions, and cannot realize the calibration of space vector forces with different spatial angles and different force values.

Method used

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  • A Space Vector Force Calibration Method
  • A Space Vector Force Calibration Method
  • A Space Vector Force Calibration Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] 1 Establish vector thrust measurement model

[0036] Engine vector thrust can be calculated by the following method:

[0037]

[0038]

[0039]

[0040] F--vector thrust;

[0041] K--coefficient matrix;

[0042] B--constant item matrix;

[0043] Fx--decompose the vector force in the x direction;

[0044] Fy--decompose the vector force in the y direction;

[0045] Fz--decompose the vector force in the z direction;

[0046] Fx1-x, Fx2-x--the measured value of the main thrust direction sensor;

[0047] Fy1-y, Fy2-y, Fy3-y--measured value of vertical sensor;

[0048] Fz1-z-- side sensor measurement value;

[0049] The coefficient matrix K and the constant term matrix B are obtained from on-site vector thrust calibration.

[0050] 2 space vector thrust calibration

[0051] Before the space vector thrust calibration, loosen all moving frame locking devices, and collect the zero point values ​​of the six load cells when the loading mechanism is disengaged fro...

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Abstract

The invention belongs to the field of aeroengine test, and particularly relates to a space vector force calibration method which is characterized in that multiple standard force and multiple sets of measuring force are measured by using a space vector force simulation loading device, and a coefficient matrix K and a constant term matrix B are calculated by establishing a vector thrust measuring model. Compared with the one-way calibration method, the standard vector force can more accurately simulate the size and the direction of the real engine vector force so that the disadvantage of insufficient vector force representation in case of one-way loading calibration can be compensated and the measurement accuracy of the engine vector force can be enhanced.

Description

technical field [0001] The invention belongs to the field of aero-engine testing, and in particular relates to a space vector force calibration method. Background technique [0002] With the rapid development of modern aerospace technology, especially the thrust vector technology has become an important direction of engine development. Thrust vectoring technology can greatly improve the performance, efficiency and battlefield survivability of combat aircraft, and improve the maneuverability of combat aircraft, but the premise of this technology is that vector thrust must be accurately measured. [0003] The measurement of the vector thrust requires a vector thrust test bench. In order to ensure the accuracy of the vector thrust measurement, the vector force calibration must be carried out on the vector thrust test bench. The existing domestic vector table calibration technology is limited to the calibration of a single direction in three directions, and cannot realize the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L25/00
CPCG01L25/00
Inventor 宋子军赵涌张聪姜海良庞洪江尹骥
Owner AECC SICHUAN GAS TURBINE RES INST