Design method for communication system reliability statistic test scheme on basis of competing failure

A communication system and statistical test technology, applied in calculation, special data processing applications, instruments, etc., can solve the problems of large test sample size, unacceptable engineering, long test time, etc.

Inactive Publication Date: 2013-07-24
BEIHANG UNIV
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Problems solved by technology

The current statistical test for the reliability verification of communication systems generally evaluates and verifies the entire communic

Method used

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  • Design method for communication system reliability statistic test scheme on basis of competing failure
  • Design method for communication system reliability statistic test scheme on basis of competing failure
  • Design method for communication system reliability statistic test scheme on basis of competing failure

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Embodiment Construction

[0079] Taking the reliability statistical test scheme design of a certain type of communication system as an example, the present invention will be further described in detail.

[0080] figure 1 It is the flow chart of the system software subsystem reliability failure-free statistical test plan, figure 2 It is a schematic diagram of the series structure of the system; in order to evaluate the reliability of a certain type of communication system, it is planned to design its system reliability statistical test plan through hardware copy test and software test. Now randomly select 50 communication systems as samples, and carry out t 0 =5000h (h is hour) timed censored trial without replacement. at t 0 At any time, 6 samples failed, and their failure times were 589, 842, 1134, 2127, 2651, and 4020 (unit: h). Another sample is taken for software test. In the 5000h test of the communication system, the software test time is t 1 =4000h (that is, the operating ratio is σ=4000 / 5...

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Abstract

A design method for a communication system reliability statistic test scheme on the basis of competing failure includes eight major steps: firstly, on the basis of a reliability requirement R0 of a system at a certain time and under certain conditions, the fact that the reliability of hardware is higher than the reliability requirement is determined; then a software reliability requirement R0S which is higher than the R0 is given, and the Bezier-Platt approximate calculation algorithm is used for calculating the lower confidence limit of software reliability to obtain a corresponding a failure-free statistic test scheme; hardware test data and software failure-free test time are combined for calculating the lower confidence limit of system reliability under a given task time t0; the lower confidence limit of the system reliability is compared with a system reliability requirement; whether the failure-free statistic test scheme is an optional scheme is judged; if the failure-free statistic test scheme is not the optional scheme, the software reliability requirement is improved and then searching is continued; and if the failure-free statistic test scheme is the optional scheme, according to economic feasibility and other actual conditions, the step that the R0S is adjusted for continuing the searching is chosen, or a final scheme is determined. Through the steps, the communication system reliability statistic test scheme which is economical and feasible and can meet project practical requirements can be sorted out.

Description

technical field [0001] The invention relates to a design method of a communication system reliability statistical test scheme based on competition failure, which is applicable to problems such as reliability evaluation, reliability verification and quality control, and belongs to the technical field of reliability and system engineering. Background technique [0002] Reliability verification statistical test is widely used in industrial production, aerospace and other fields. It is a test to verify whether product reliability meets the specified requirements. Through the test, the problems in the design and process of the product can be found. By analyzing the failures, we can find the failure mode and the cause of the failure, and take corrective measures for the specific reasons, so as to ensure that the system reaches the predetermined reliability design index. Therefore, reliability verification statistical test is an important part of reliability engineering and an eff...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 杨军秦晋赵宇
Owner BEIHANG UNIV
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