A hypersonic wind tunnel test data processing method with continuously variable angle of attack
A test data, hypersonic technology, applied in aerodynamic tests, testing of machine/structural components, instruments, etc., can solve the problems of difficult installation of accelerometer sensors, unsatisfactory low-frequency noise processing effect, etc., to improve processing accuracy, The effect of improving test efficiency
Active Publication Date: 2021-09-07
中国空气动力研究与发展中心超高速空气动力研究所
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However, this method is not ideal for low-frequency noise processing; in addition, the hypersonic wind tunnel test model is generally small, limited by the model installation space, lead wires, etc., it is difficult to install additional sensors such as accelerometers
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[0021] The invention will be described in detail below with reference to the accompanying drawings and examples.
[0022] This embodiment does not limit the present invention in any way, all the technical solutions adopted equivalents obtained manner, it is within the scope of the present invention.
[0023] like figure 1 , The present invention hypersonic wind tunnels continuously variable angle of attack test data processing method comprising the steps of:
[0024] Step 1: Select hypersonic wind tunnel test data continuously variable angle of attack as the data to be processed 101, selecting a first data point of the data to be processed 101 as segment starting point 102;
[0025] Step 2: Set the minimum segment length 201, 201 based on the minimum length of the segment extracting segment data 202; segment length increasing progressively, sequentially increasing extraction length of the segment data to calculate the variance of the data segment 203, the segment data selected whe...
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The invention discloses a method for processing test data of a hypersonic wind tunnel with continuously variable attack angles. This data processing method is aimed at the actual situation that it is difficult to add additional sensors to the hypersonic wind tunnel model. It is only based on the hypersonic wind tunnel test data itself, and adopts adaptive segmentation based on the minimum variance, segment fitting and data fusion. Steps, to realize the hypersonic wind tunnel continuous variable angle of attack test data processing. The hypersonic wind tunnel continuously variable angle of attack test data processing method of the present invention improves the supersonic wind tunnel continuously variable angle of attack test data processing accuracy, helps to promote the popularization and application of the hypersonic wind tunnel continuously variable angle of attack test, and improves hypersonic speed Wind tunnel test efficiency.
Description
Technical field [0001] The present invention belongs to the technical field hypersonic wind tunnel testing, in particular to a continuously variable hypersonic wind tunnel test data processing method of the angle of attack. Background technique [0002] In a conventional force measurement hypersonic wind tunnel tests, usually uniformed angle of attack test mode, the test mode but not uniformed angle of attack wind tunnel tests for a long time, a limited number of models and the measured angle of attack, it is proposed continuously variable angle of attack test methods, but there is a certain angle of attack becomes continuous during the test model of the resonator, the resonance of the inertial force is superimposed to the balance, the balance of the error introduced into the measurement. [0003] The measurement error is commonly employed method of removing the acceleration compensating, i.e. a specific position of the mounting accelerometers measure vibration acceleration in th...
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IPC IPC(8): G01M9/04G01M9/06
CPCG01M9/04G01M9/06
Inventor 王南天许晓斌邹琼芬王雄孙鹏
Owner 中国空气动力研究与发展中心超高速空气动力研究所