High-efficiency MTBF (Mean Time Between Failures) proof test method applied to ship navigation product

A technology for navigating products and guaranteeing tests, applied in the direction of measuring devices, instruments, etc., can solve the problems of many steps, cumbersome and complicated test process, huge manpower, material resources and test time, etc., to achieve simple test method, reduce test time, shorten The effect of the trial period

Inactive Publication Date: 2012-06-13
TIANJIN NAVIGATION INSTR RES INST
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Problems solved by technology

[0003] Ship navigation products mainly refer to inertial navigation system, radio navigation equipment, speed log, magnetic compass, platform compass, electrostatic gyro monitor and other instruments. Due to the characteristics of small samples and high reliability of navigation products, the minimum test time is acceptable The value is usually (1200 ~ 3000) h, although the above lists many relevant reliability acceptance test standards at home and abroad, be

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  • High-efficiency MTBF (Mean Time Between Failures) proof test method applied to ship navigation product
  • High-efficiency MTBF (Mean Time Between Failures) proof test method applied to ship navigation product
  • High-efficiency MTBF (Mean Time Between Failures) proof test method applied to ship navigation product

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Embodiment Construction

[0034] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be noted that the embodiments are illustrative, not restrictive, and cannot limit the protection scope of the present invention.

[0035] A high-efficiency MTBF guarantee test method suitable for ship navigation products, comprising the following steps: (1) determine the test time:

[0036] The test time is r ~ 2r, where r = 0.212M (P S =0.98) or r=0.148M (P S =0.99), where:

[0037] r—the value of the interval between failures, in hours (h);

[0038] M—the minimum acceptable value of MTBF for navigation products, in hours (h);

[0039] P S — the probability value of passing the MTBF guarantee test.

[0040] The test time of the guarantee test is usually determined by formula (1). When it is difficult to undertake high-reliability product tests for a long time, the test time can also be determined by formula (2).

[0041] (2) Determi...

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Abstract

The invention relates to a high-efficiency MTBF (Mean Time Between Failures) proof test method applied to a ship navigation product, which comprises the following steps of: (1), determining test time; (2) determining environmental parameters; (3) determining a test section; and (4) determining test passing criterion. The method disclosed by the invention is a reliable acceptance test method, which is particularly applied to being used by the navigation product; a test program can be simplified by adopting the test method disclosed by the invention; the test time is shortened to r=(0.148-0.212)M from r=(1.1-45)M; the test time is greatly reduced; furthermore, the test section is greatly simplified; the development cycle can be greatly shortened; and a lot of test funds and resources, such as manpower, material and the like, can be saved.

Description

technical field [0001] The invention relates to the technical field of reliability, in particular to a reliability acceptance test method for small samples and high-reliability products. Background technique [0002] There are many methods of reliability acceptance test, such as GB 5058.7-86 "Verification test plan for failure rate and mean time between failures under the assumption of constant failure rate in equipment reliability test" is equivalent to the adoption of IEC 605.7-1978 "Equipment reliability test No. Part 7: Verification test plan for failure rate and mean time between failures under the assumption of constant failure rate", this standard stipulates 10 sequential test plans and 10 timing (fixed number) test plans. GJB899A-2009 "Reliability Appraisal and Acceptance Test", in which 21 reliability acceptance test schemes are specified, including 8 sequential test statistical schemes, 12 timed censored test statistical schemes and full test statistical schemes. ...

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Application Information

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IPC IPC(8): G01C25/00
Inventor 杜建华刘玉明史克勇张园园滕国栋洪浩
Owner TIANJIN NAVIGATION INSTR RES INST
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