Method for determining brake control device vibration test parameters

Abstract

A method for determining brake control device vibration test parameters comprises the following steps: the vibration test parameters of the brake control device are determined by determining the indexof a vibration calculation formula of an electronic product and then calculating the corresponding power spectral density according to the duration required by the test. By adopting the method provided by the invention, any electronic product can actually measure the index in the vibration test formula, formulate a vibration duration test scheme conforming to engineering reality and reduce the test duration and energy waste, and on the other hand, formulation of a wrong test scheme is prevented, and the risk in use is avoided.

Description

technical field [0001] The invention relates to the field of vibration tests of electronic products of civil aircraft, in particular to a method for determining vibration test parameters of a brake control device. Background technique [0002] The brake control device is a typical electronic product. The vibration test parameters include power spectral density, test duration and the size of the index, which is the slope of the vibration fatigue curve in the double-logarithmic coordinate system. [0003] The vibration test duration and power spectral density value of electronic products are determined according to the development requirements during the life of the aircraft. The prior art uses the following two schemes to determine power spectral density and vibration duration: [0004] The first solution: the power spectral density applied in the test is equal to the power spectral density specified in the development agreement, and then the test is completed according to t...

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Problems solved by technology

[0026] 1) In the prior art represented by MIL-STD-810F and GJB150A, the function of power spectral density and vibration test duration is specified, see formula (2), and the index in formula (2) is defined as a constant 4, because the The index is the slope of the vibration fatigue curve in the double-logarithmic coordinate system, which directly affects the vibration power spectrum density and size and the size of the vibration duration. This regulation in the prior art ignores the differences between different types of electronic products and the differences in operating conditions , according to the index of the same size to calculate the vibration test duration of different types of electronic products, there will be a phenomenon that does not conform to the real situation, and the consequences of misjudgment will occur

[0027] 2) Although the technical solutions disclosed in the above-mentioned invention applications are all related to vibration, they do not involve the method of determining the index in the vibration duration calculation formula, and determining the power spectral density and test duration according to the size of the index

In reality, there are many types of electronic products, and the technical status and working conditions of the products are also in a state of updating and changing. Therefore, the existing technology has the disadvantage that it cannot cover the current status of the project.

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