Wind tunnel test balance assessment method based on strain signal energy
A wind tunnel test and signal energy technology, applied in aerodynamic tests, machine/structural component testing, measuring devices, etc., can solve the problem of inaccurate and reliable evaluation of aerospace vehicle performance, mechanical data accuracy and reliability Difficult to determine, unable to evaluate the dynamic characteristics of the balance, etc., to achieve the effects of saving test costs, reliable evaluation, and easy equipment installation
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[0026] figure 1 Shown, a kind of embodiment of the present invention is, a kind of evaluation method of the wind tunnel test balance based on strain signal energy, and its steps are as follows:
[0027] A, before the test, install model three-way strain gauge 1a, frame three-way strain gauge 2a and balance three-way strain gauge 3a respectively on the top inner wall of aircraft model 1, model frame 2 and balance 3, model three-way strain gauge 1a, The signal output ends of the frame three-way strain gauge 2a and the balance three-way strain gauge 3a are connected to the signal conditioning instrument; the signal conditioning instrument is also connected to the computer through the data acquisition device;
[0028] B, simulate actual working conditions, carry out wind tunnel test to aircraft model; Test simultaneously, model three-way strain gauge 1a, frame three-way strain gauge 2a and balance three-way strain gauge 3a measure respectively the strain signal f pv (t) Sampling ...
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