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

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. ...

AI Technical Summary

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, because the test time is usually (1.1 ~ 45) times the minimum acceptable value, even if the navigation product adopts the above short time For high-risk test schemes, the test time should also be 1.1 times (r=1.1M) the minimum acceptable value, so the test process using the existing test acceptance method is cumbersome and complicated, with many steps, requiring huge manpower, material resources and test time. Unaffordable for products like navigation products

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