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Universal wind-tunnel balance body axis static correction rack reset method

A reset method and wind tunnel balance technology, which is applied in the testing of machines/structural components, measuring devices, instruments, etc., can solve problems such as unsuitable parallel reset system, compensating complex movement interference, etc., to achieve fast reset speed and ensure accuracy , Simple and convenient operation

Active Publication Date: 2018-11-16
CHINA ACAD OF AEROSPACE AERODYNAMICS
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Problems solved by technology

However, this method is not suitable for the parallel reset system. There is more complex interference between the compensation movements of each degree of freedom in the parallel reset system. Even if the angle and displacement changes are measured after the balance is loaded, complex inverse calculations are required corresponding to each motor

Method used

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  • Universal wind-tunnel balance body axis static correction rack reset method
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  • Universal wind-tunnel balance body axis static correction rack reset method

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0021] The technical problem solved by the present invention is to provide a reset method with fast reset speed, simple and convenient operation and adaptable to different reset systems in order to meet the reset system requirements of series, parallel or combined series and parallel.

[0022] A general wind tunnel balance body axis static calibration frame reset method, such as figure 1 Shown is a schematic diagram of the reset process, which includes the following steps:

[0023] Step (1), such as figure 2 Shown is a schematic diagram of the reset mechanism, as can be seen from the figure, adjust the first motor, the second motor, the third motor, the fourth motor, the fifth motor and the sixth motor inside the reset mechanism 1; make the balance coordinate system O' of the balance 4 X'Y'Z' coincides with the pre-established earth axis coor...

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Abstract

The present invention provides a universal wind-tunnel balance body axis static correction rack reset method, and relates to the technical field of wind-tunnel balance static correction. The method comprises the following steps of: the step (1),overlapping a balance coordinate system of a balance of a pre-established earth axis coordinate system, and marking as a mechanical zero; the step (2), performing increment drive of a first motor, a second motor, a third motor, a fourth motor, a fifth motor and a sixth motor, and employing six motor coded disc readings and six laser displacement sensorreadings; the step (3), calculating a transition matrix A of the coded disc readings and the sensor readings; the step (4), calculating a target coded disc reading; and the step (5), according to theobtained target coded disc reading through calculation, controlling the 6 motors to reset in order until the readings of the six displacement sensors to return the reading prior to weight loading. Theuniversal wind-tunnel balance body axis static correction rack reset method is suitable for reset systems in a serial mode, a parallel mode or a combination mode of series and parallel, is fast in reset speed, simple and convenient to operate and adapt reset systems with different modes.

Description

technical field [0001] The invention relates to the technical field of wind tunnel balance calibration technology, in particular to a general wind tunnel balance body axis static calibration frame reset method. Background technique [0002] The wind tunnel balance is the key core equipment for the aerodynamic test of the aircraft wind tunnel, and the balance calibration system is a special metering device used for the balance calibration of the wind tunnel. Its performance directly affects the performance of the balance, and then affects the aerodynamic force of the aircraft wind tunnel. The accuracy of the test results. [0003] According to the different loading coordinate axis systems, the wind tunnel sky calm calibration system can be divided into the earth axis sky calm calibration system and the body axis sky calm calibration system. The balance calibration system of the earth axis system does not consider the deformation of the balance after being loaded. Although th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/06
CPCG01M9/062
Inventor 张娜蒋坤闫万方马洪强
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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