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Method for testing potential failure risks of antiskid braking control boxes by aid of quick temperature variation

A technology of anti-skid braking and temperature change, applied in the direction of electrical testing/monitoring, etc., can solve the problems of limitations, few introduction of reliability strengthening test equipment, etc., and achieve the effect of improving welding quality

Inactive Publication Date: 2013-09-11
XIAN AVIATION BRAKE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] State-owned enterprises rarely introduce reliability enhancement test equipment, and the promotion of this method is limited by insufficient equipment

Method used

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  • Method for testing potential failure risks of antiskid braking control boxes by aid of quick temperature variation
  • Method for testing potential failure risks of antiskid braking control boxes by aid of quick temperature variation
  • Method for testing potential failure risks of antiskid braking control boxes by aid of quick temperature variation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] This embodiment is a method for testing the anti-skid brake control box of a certain type of conveyor under the condition of rapid temperature change.

[0080] The specific steps of this embodiment are:

[0081] Step 1. Determine the high temperature value of the rapid temperature change test of the anti-skid brake control box

[0082] A method of applying high-temperature step stress and working stress to the anti-skid brake control box to test the damage limit of the anti-skid brake control box. The high temperature damage limit of the anti-skid brake control box in this embodiment is improved to be greater than 115°C;

[0083] Determine the high temperature value of the rapid temperature change of the comprehensive environmental test box. The high temperature value of the rapid temperature change is 5℃~10℃ lower than the high temperature damage limit. The high temperature value taken in this embodiment is 110℃, which is 5℃ lower than the high temperature damage limit. 110℃ i...

Embodiment 2

[0121] Examples 2 and 3 both include determining the high temperature value of the anti-skid brake control box rapid temperature change test, determining the low temperature value of the anti-skid brake control box rapid temperature change test, determining the rapid temperature change rate value, and determining the anti-skid brake during the test. The operating current applied by the control box, determine the temperature retention time of the anti-skid brake control box under high and low temperature conditions, develop a rapid temperature change test profile, test according to the rapid temperature change test profile, and test and verify the improved antiskid brake control box For each step, the specific process is the same as that of Example 1, and the difference is that the test data in Example 2 and Example 3 are different from the test data in Example 1, as shown in Table 3.

[0122] The main test data of the 3 examples are summarized in Table 3.

[0123] Table 3 Summary t...

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Abstract

The invention discloses a method for testing potential safety risks of antiskid braking control boxes by the aid of quick temperature variation. The method includes determining high-temperature numerical values of an antiskid braking control box in quick temperature variation tests; determining low-temperature numerical values of the antiskid braking control box in the quick temperature variation tests; determining a quick temperature variation rate; determining working currents applied to the antiskid braking control box in test procedures and determining temperature holding durations of the antiskid braking control box under high-temperature and low-temperature conditions; establishing a quick temperature variation test profile according to a determined high temperature of a test chamber, a determined low temperature of the test chamber and a determined temperature variation rate of the test chamber; performing five cycle quick temperature variation tests according to the established test profile; comprehensively applying an antiskid braking working current to truly stimulate potential failure risks of the antiskid braking control box. The method has the advantages that the comprehensive environmental test chamber is utilized, the temperatures are accessorily controlled via liquid nitrogen, the potential failure risks of the antiskid braking control box during temperature variation can be stimulated within two days, and accordingly purposes of improving the development efficiency, saving energy and reducing consumption are achieved.

Description

Technical field [0001] The invention relates to the field of electronic products of transportation aircraft brake systems, in particular to a method for testing the hidden trouble of the anti-skid brake control box under the condition of rapid temperature changes. Background technique [0002] It is one of the contents of the highly accelerated life test to stimulate and correct the hidden troubles of electronic products under the conditions of rapid temperature changes. [0003] The anti-skid brake control box is an electronic product in the aircraft's anti-skid brake system. It is designed with take-off line brake function, anti-skid function during landing brake, ground protection function during landing, and inter-wheel protection of left and right landing gear wheels during landing. And many other functions, any one of the functions does not meet the design requirements is a failure. [0004] The condition of rapid temperature change is an environmental condition often encounte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
Inventor 乔建军柯少昌
Owner XIAN AVIATION BRAKE TECH
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