CN101788651A - Power supply reliability verification method - Google Patents
Power supply reliability verification method Download PDFInfo
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- CN101788651A CN101788651A CN 201010103769 CN201010103769A CN101788651A CN 101788651 A CN101788651 A CN 101788651A CN 201010103769 CN201010103769 CN 201010103769 CN 201010103769 A CN201010103769 A CN 201010103769A CN 101788651 A CN101788651 A CN 101788651A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000012795 verification Methods 0.000 title claims abstract description 11
- 238000012360 testing method Methods 0.000 claims description 29
- 230000004087 circulation Effects 0.000 claims description 6
- 230000005856 abnormality Effects 0.000 claims description 5
- 238000002715 modification method Methods 0.000 claims description 5
- 238000012937 correction Methods 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 abstract description 3
- 230000035882 stress Effects 0.000 description 44
- 238000013461 design Methods 0.000 description 10
- 238000011990 functional testing Methods 0.000 description 4
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Abstract
The invention provides a power supply reliability verification method, including the steps: stress is gradually applied to a power supply to be tested until the power supply to be tested is invalid and can not be corrected, and invalidation limit or operational interface of the power supply to be tested is determined according to the stress applied currently. The method can early discover weak link of power supply reliability and improve the weak link, thus enhancing reliability of power supply.
Description
Technical field
The present invention relates to the power supply design, be specifically related to a kind of power supply reliability verification method.
Background technology
At present, in fields such as computing machine communications, equipment such as server, storage, switch all require the high reliability of 7*24 hour non-stop-machine high availability and 99.9%--99.999%.For reaching this target, very high requirement has been proposed all for the reliability of each critical piece in these equipment.Power supply is as the power system of equipment operation, and the raising of its reliability can play a key effect to the raising of equipment integral reliability undoubtedly.
Therefore, how to improve the power supply reliability design fast and effectively, become the problem of designer's special concern.
Summary of the invention
The technical problem to be solved in the present invention is, proposes a kind of power supply reliability verification method, can find the weak link of power supply reliability early, improved, thereby strengthens the reliability of power supply.
In order to solve the problems of the technologies described above, the present invention proposes a kind of power supply reliability verification method, comprises step:
To tested power supply progressively stress application determine the inefficacy boundary or the operational boundaries of tested power supply according to the current stress that applies up to its inefficacy and can't revise.
Further, said method also can have following characteristics:
If the described tested power supply of interim measure correction is adopted in tested power-fail and can revise the time.
Further, said method also can have following characteristics:
Write down in the following data one or more: abnormality, failure mode, failure cause, modification method during described tested power-fail, and the inefficacy boundary or the operational boundaries that obtain.
Further, said method also can have following characteristics:
Described stress comprises temperature and/or vibration;
When described stress is temperature, operational boundaries that the inefficacy boundary of described tested power supply or operational boundaries are temperature or inefficacy boundary;
When described stress was vibration, the inefficacy boundary of described tested power supply or operational boundaries were the operational boundaries or the inefficacy boundaries of vibration;
When described stress was temperature and vibration, the inefficacy boundary of described tested power supply or operational boundaries were one or more in following 3 kinds: stress operational boundaries or inefficacy boundary that the operational boundaries of the operational boundaries of temperature or inefficacy boundary, vibration or inefficacy boundary, temperature and vibration merge.
Further, said method also can have following characteristics:
The operational boundaries of described temperature or inefficacy boundary comprise: the inefficacy boundary or the operational boundaries of high temperature, and the inefficacy boundary or the operational boundaries of low temperature.
Further, said method also can have following characteristics:
Operational boundaries or inefficacy boundary that described temperature and vibration merge obtain in the following way:
Determine the inefficacy boundary or the operational boundaries of high temperature, and the inefficacy boundary or the operational boundaries of low temperature, and carry out high low temperature circulation according to this;
Since an initial vibration stress, progressively change vibration stress according to incremental manner, each change vibration stress after, maximum temperature and minimum temperature place in each circulation test, up to tested power-fail and can't revise.
Further, said method also can have following characteristics:
After stress changes, wait for a period of time earlier, test again behind the stress stability treating.
A kind of power supply reliability verification method that the present invention proposes, in the power supply development, except that conventional reliability compliance test (as safety test, some temperature rise test etc.), product is carried out high environmental stress confirmatory experiment, this is destructive demonstration test, stress when the stress that it applied will be higher than power supply normal transport, storage, use, by allowing power supply bear different ultimate stresses, the defective of finding out the power supply design fast and making, find the weak link of power supply reliability early, improved, thus the reliability of enhancing power supply.
Description of drawings
Fig. 1 is a kind of power supply reliability verification method process flow diagram of the embodiment of the invention;
Fig. 2 is a kind of power supply reliability verification method process flow diagram of application example of the present invention.
Embodiment
Describe embodiment of the present invention in detail below in conjunction with accompanying drawing.
Referring to Fig. 1, this illustrates a kind of power supply reliability verification method of the embodiment of the invention, in the power supply development, power supply is carried out high environmental stress demonstration test, stress when the stress that is applied will be higher than power supply normal transport, storage, use, concrete proof procedure is as follows:
Step S101: to tested power supply progressively stress application lost efficacy up to it;
The reason of tested power-fail may be each side such as electrical property, structure, thermal design.In when test, can only pay close attention to the failure conditions that needs, for example, only pay close attention to electrical property, when electrical property breaks down, think inefficacys, execution in step S102, and structure is not thought specifically to determine inefficacy according to testing requirement when going wrong, and repeats no more here.
It is described that to add all stress in tested power supply can be temperature and/or vibration.
This step is since a primary stress, progressively changes stress according to the mode that increases progressively or successively decrease and tests, up to tested power-fail.Wherein, after changing stress, wait for a period of time earlier, behind the stress stability that wait changes, test again.
Step S102: analyze failure cause, judge whether to revise the inefficacy of tested power supply,, then enter step S103,, then enter step S104 if can not revise if can revise;
Step S103: revise the inefficacy of tested power supply, return step S101 then;
Revise the inefficacy of tested power supply by change design,, can adopt some interim measures earlier, when the fly line situation for example occurring, use that adhesive tape etc. is reinforced product etc. temporarily in order to accelerate test.
When tested power-fail, abnormality, failure mode, failure cause that tested power supply is produced, and modification method etc. carries out record;
Step S104: inefficacy boundary or the operational boundaries of determining tested power supply according to the current stress that applies;
Described operational boundaries is meant the service condition ultimate value that finally offers the client, and described inefficacy boundary is meant the stress value when product can't be repaired.
By allowing power supply bear different ultimate stresses, power supply designs and the defective of manufacturing thereby find out fast dexterously in the present invention, finds the weak link of power supply reliability early, improved, thus the reliability of enhancing power supply.
Step S105: safeguard a designed capacity database, the test data in the entire test is saved to described designed capacity database.
Described test data comprises abnormality, failure mode, failure cause, the modification method that tested power supply produces, and the temperature operation boundary that finally obtains or Temperature Failure boundary, vibration operational boundaries or vibration inefficacy boundary, merging stress operational boundaries or merging stress failures boundary etc.
This database is the product design ability, and the basic data of product reliability can be used as the important evidence of research and development in the future.
Describe embodiment of the present invention in detail with a concrete application example below, when selected stress is temperature and vibration, utilize the method for ladder stress to add all in tested power supply, so that find product defects, operational design limit and structural limit in early days, in time improve design defect, increase power supply reliability, the important evidence that also can set up the basic data of designed capacity, product reliability simultaneously and research and develop in the future, specifically comprise three examination journeys, referring to Fig. 2:
Step S201: carry out the temperature stress test, determine the operational boundaries or the inefficacy boundary of temperature;
The operational boundaries of described temperature is meant the temperature service condition ultimate value that finally offers the client, and the inefficacy boundary of described temperature is meant the temperature stress value when product can't be repaired.
Specifically, can carry out the low temperature stress test according to flow process shown in Figure 1 earlier, to determine low-temperature operation boundary or inefficacy boundary.To tested power supply progressively stress application in the process of its inefficacy, be since an initial temperature, per stage cooling uniform temp, keep a period of time after phase temperature is stable, carry out a functional test in the stage equilibrium temperature, as the uniform temp of normally lowering the temperature again, carry out functional test after treating to keep the identical time behind the temperature stabilization, and the like until functional fault takes place.After finishing low-temperature test, carry out the high temperature stress test according to same program, determine high-temperature operation boundary or high temperature failure boundary.
Step S202: carry out the vibration stress test, determine the operational boundaries or the inefficacy boundary of vibration;
The operational boundaries of described vibration is meant the vibration service condition ultimate value that finally offers the client, and the inefficacy boundary of described vibration is meant the vibration stress value when product can't be repaired.
Specifically, can carry out the vibration stress test according to flow process shown in Figure 1, to determine low-temperature operation boundary or inefficacy boundary.To tested power supply progressively stress application in the process of its inefficacy, be since an initial acceleration of gravity G value, per stage increases identical G value, carries out a functional test after keeping a period of time in each stage under the condition that vibration continues, and the rest may be inferred until functional fault takes place.
Step S203: carry out temperature and merge stress test, determine to merge the operational boundaries or the inefficacy boundary of stress with vibration;
Specifically, can be with the low temperature that obtains in the temperature stress test and high-temperature operation boundary as herein high low-temperature limit, in this interval, carry out a plurality of high low temperature circulations with rate of temperature change fast, simultaneously random vibration is begun to cooperate from initial G value, each circulation increases identical G value, continue for some time in each round-robin highest temperature and lowest temperature place, treat to carry out functional test behind the temperature stabilization, test process is flow process as shown in Figure 1, thereby determines the operational limit or the inefficacy boundary of temperature and vibration.
Step S204: the test data in the record entire test, comprise abnormality, failure mode, failure cause, modification method that tested power supply produces, and the temperature operation boundary that finally obtains or Temperature Failure boundary, vibration operational boundaries or vibration inefficacy boundary, merging stress operational boundaries or merging stress failures boundary etc.
Test data in the entire test is write down and gathers, set up the designed capacity database, this database is the product design ability, and the basic data of product reliability can be used as the important evidence of research and development in the future.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those skilled in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (7)
1. a power supply reliability verification method is characterized in that, comprises step:
To tested power supply progressively stress application determine the inefficacy boundary or the operational boundaries of tested power supply according to the current stress that applies up to its inefficacy and can't revise.
2. the method shown in claim 1 is characterized in that:
If the described tested power supply of interim measure correction is adopted in tested power-fail and can revise the time.
3. the method shown in claim 1 is characterized in that:
Write down in the following data one or more: abnormality, failure mode, failure cause, modification method during described tested power-fail, and the inefficacy boundary or the operational boundaries that obtain.
4. the method shown in claim 1 is characterized in that:
Described stress comprises temperature and/or vibration;
When described stress is temperature, operational boundaries that the inefficacy boundary of described tested power supply or operational boundaries are temperature or inefficacy boundary;
When described stress was vibration, the inefficacy boundary of described tested power supply or operational boundaries were the operational boundaries or the inefficacy boundaries of vibration;
When described stress was temperature and vibration, the inefficacy boundary of described tested power supply or operational boundaries were one or more in following 3 kinds: stress operational boundaries or inefficacy boundary that the operational boundaries of the operational boundaries of temperature or inefficacy boundary, vibration or inefficacy boundary, temperature and vibration merge.
5. the method shown in claim 4 is characterized in that:
The operational boundaries of described temperature or inefficacy boundary comprise: the inefficacy boundary or the operational boundaries of high temperature, and the inefficacy boundary or the operational boundaries of low temperature.
6. the method shown in claim 5 is characterized in that, operational boundaries or inefficacy boundary that described temperature and vibration merge obtain in the following way:
Determine the inefficacy boundary or the operational boundaries of high temperature, and the inefficacy boundary or the operational boundaries of low temperature, and carry out high low temperature circulation according to this;
Since an initial vibration stress, progressively change vibration stress according to incremental manner, each change vibration stress after, maximum temperature and minimum temperature place in each circulation test, up to tested power-fail and can't revise.
7. as any one described method among the claim 1-6, it is characterized in that:
After stress changes, wait for a period of time earlier, test again behind the stress stability treating.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010103769 CN101788651A (en) | 2010-01-29 | 2010-01-29 | Power supply reliability verification method |
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| CN 201010103769 CN101788651A (en) | 2010-01-29 | 2010-01-29 | Power supply reliability verification method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646269A (en) * | 2016-06-20 | 2017-05-10 | 哈尔滨工业大学 | High-voltage power source fault excitation monitoring device and method |
| CN106842068A (en) * | 2017-01-12 | 2017-06-13 | 郑州云海信息技术有限公司 | A kind of method and device of the reliability for improving server power supply |
| CN107102230A (en) * | 2017-05-26 | 2017-08-29 | 哈尔滨工业大学 | A kind of resistance to environmental reliability analysis method for sealed electronic module |
| CN110412497A (en) * | 2019-06-11 | 2019-11-05 | 国网重庆市电力公司电力科学研究院 | A kind of intelligent electric energy meter weak links of reliability localization method and device |
-
2010
- 2010-01-29 CN CN 201010103769 patent/CN101788651A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646269A (en) * | 2016-06-20 | 2017-05-10 | 哈尔滨工业大学 | High-voltage power source fault excitation monitoring device and method |
| CN106646269B (en) * | 2016-06-20 | 2020-02-11 | 哈尔滨工业大学 | High-voltage power supply fault excitation monitoring device and monitoring method thereof |
| CN106842068A (en) * | 2017-01-12 | 2017-06-13 | 郑州云海信息技术有限公司 | A kind of method and device of the reliability for improving server power supply |
| CN107102230A (en) * | 2017-05-26 | 2017-08-29 | 哈尔滨工业大学 | A kind of resistance to environmental reliability analysis method for sealed electronic module |
| CN110412497A (en) * | 2019-06-11 | 2019-11-05 | 国网重庆市电力公司电力科学研究院 | A kind of intelligent electric energy meter weak links of reliability localization method and device |
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Application publication date: 20100728 |