Asymmetric load buffer and parameter determination method
A buffer and asymmetric technology, applied in the field of aircraft strength test loading, can solve problems such as overrun stop, feedback and command error, poor loading response characteristics, etc., to avoid commutation impact, reduce stiffness, and ensure loading accuracy.
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[0051] The actuator test loading stroke should be adjustable between 5mm-10mm, and the maximum tensile load is F 拉 =1530N, the maximum pressure load is F 压 =4630N. Determine the parameters of the spring according to the tension and compression load and the required deformation (see Table 1). During use, it is required that there should be no gap between the large spring and the small spring to ensure the continuity of the feedback load curve.
[0052] Table 1 Spring parameter table
[0053]
[0054] According to F 压 =4630N, when the large spring is compressed, the small spring is fully extended, and the compression amount of the large spring is f n =F 压 / F'=4630N / 433N / mm=10.7mm, when the spring is installed, the total compression of the two springs is 10.7mm. When the two springs are assembled and press against each other:
[0055] f 小 ’ X1=F 大 '·X2 and X1+X2=10.7
[0056] where F 小 '=178N / mm, F 大 ’=433N / mm
[0057] Obtain: X1=7.6mm, X2=3.1mm, that is, the compr...
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