CN106650010A - Reliability simulation method of microaccelerometer under temperature, humidity and vibration combined stress - Google Patents
Reliability simulation method of microaccelerometer under temperature, humidity and vibration combined stress Download PDFInfo
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- CN106650010A CN106650010A CN201611042333.6A CN201611042333A CN106650010A CN 106650010 A CN106650010 A CN 106650010A CN 201611042333 A CN201611042333 A CN 201611042333A CN 106650010 A CN106650010 A CN 106650010A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
Abstract
The invention relates to a reliability simulation technology of microaccelerometers, in particular to a reliability simulation method of a microaccelerometer under temperature, humidity and vibration combined stress. The problem that at present, no microaccelerometer reliability simulation method based on the high accelerated life test technology is available is solved. The reliability simulation method of the microaccelerometer under the temperature, humidity and vibration combined stress comprises the following steps that 1, a simulation model of a microaccelerometer is established through simulation software, and the mature characteristics of the microaccelerometer are confirmed through the simulation model; 2, reliability simulation is carried out on the microaccelerometer under the temperate stress; 3, reliability simulation is carried out on the microaccelerometer under the vibration stress; 4, reliability simulation is carried out on the microaccelerometer under the temperature, humidity and vibration combined stress. The method is suitable for reliability simulation of various microaccelerometers.
Description
Technical field
The present invention relates to the Reliablility simulation technology of micro-acceleration gauge, specifically a kind of micro-acceleration gauge it is warm, wet, shake it is comprehensive
Reliablility simulation method under combined stress.
Background technology
As microelectromechanical systems（MEMS）An important branch, micro-acceleration gauge is in Aeronautics and Astronautics, automobile, state
The field such as anti-has a wide range of applications.The use environment of micro-acceleration gauge is typically more harsh, therefore in order to ensure that it was used
Reliability in journey, needs are carrying out Reliablility simulation using front to it.With the system complexity of micro-acceleration gauge it is more next
Higher, traditional micro-acceleration gauge Reliablility simulation technology is limited due to itself principle, simulation time generally occurs long and imitative
The problem of true high cost.In recent years, a kind of emerging, widely accepted method for testing reliability --- high accelerated aging examination
Test（HALT）Technology quickly grows.The principle of this kind of technology is：In a stepwise manner a series of single stress are applied to product（Such as multiaxis
Random vibration, temperature cycles, electric stress etc.）And combined stress, and intensity is stepped up up to product failure, then to generation
Each failure carries out basic reason analysis, is constantly tested, analyzes, verified and is improved.Practice have shown that, this kind of technology pair
The latent defect of exposing product, the intensity and reliability for improving product are highly effective.Based on this, it is necessary to which invention is a kind of based on height
The micro-acceleration gauge Reliablility simulation method of accelerated life test technology.But such a method is there is no at present.
The content of the invention
The present invention is imitated to solve to there is no at present a kind of micro-acceleration gauge reliability based on Highly Accelerated Life Test technology
A kind of problem of true method, there is provided Reliablility simulation method of micro-acceleration gauge under warm, wet, combined stress of shaking.
The present invention adopts the following technical scheme that realization：
Reliablility simulation method of the micro-acceleration gauge under warm, wet, combined stress of shaking, the method is realized using following steps
's：
1）The simulation model of micro-acceleration gauge is set up using simulation software；It is special by the material of simulation model validation micro-acceleration gauge
Property；According to the material behavior of micro-acceleration gauge, draw the maximum permissible stress [τ] of micro-acceleration gauge, allow range of strain, maximum
Yield strength [σ]；
2）Reliablility simulation is carried out to micro-acceleration gauge under temperature stress, is comprised the following steps that：
2.1）According to the use environment of micro-acceleration gauge, a vibration of foundation parameter and a base of micro-acceleration gauge are primarily determined that
Plinth humidity parameter；
2.2）According to the use temperature range of micro-acceleration gauge, the testing temperature that heated of setting emulation is less than using temperature range
Higher limit, setting 5 DEG C≤temperature variation Δ T≤10 DEG C；
2.3）According to simulation model, temperature loading is applied to micro-acceleration gauge using the thermodynamic analysis module of simulation software；Temperature
Degree load proceeds by increase by testing temperature has been heated, and often increases maximum temperature variation Δ Tmax and is set as a sub-step；Temperature
Degree load is increasedd to over after the higher limit using temperature range, is further added by two sub-steps；
2.4）Temperature loading is loaded and solved, solving result is checked；Stress distribution cloud atlas in solving result, draws micro- adding
The stress maximum distributed points of speedometer and region of stress concentration；Last sub-step checked in solving result；Assume now
Maximum stress value suffered by micro-acceleration gauge is τt；
2.5）If τt<[τ], shows that the function of micro-acceleration gauge is normal, then continue to increase temperature loading to micro-acceleration gauge, often increases
Plus maximum temperature variation Δ Tmax is set as a sub-step；Repeat step 2.4）, until τt>When [τ], show micro-acceleration gauge
Dysfunction；The previous sub-step now checked in solving result, determines the minimum during dysfunction of micro-acceleration gauge
Temperature loading；Continue to increase temperature loading to micro-acceleration gauge, often increase by 1 DEG C and be set as a sub-step；Repeat step 2.4）, really
Make the upper limit of rupture temperature of micro-acceleration gauge；
3）Reliablility simulation is carried out to micro-acceleration gauge under vibration stress, is comprised the following steps that：
3.1）According to the use environment of micro-acceleration gauge, a basal temperature parameter and a base of micro-acceleration gauge are primarily determined that
Plinth humidity parameter；
3.2）According to the use acceleration range of micro-acceleration gauge, the initial vibration acceleration of emulation is set as 1gn, setting vibration
Acceleration change amount Δ a is 0.5gn；
3.3）According to simulation model, vibration acceleration is applied to micro-acceleration gauge using the static numerical simulation module of simulation software and is carried
Lotus；Vibration acceleration load proceeds by increase by initial vibration acceleration, often increases vibration acceleration variation delta a and is set as
One sub-step, the retention time of each sub-step is 10min；
3.4）Vibration acceleration load is loaded and solved, solving result is checked；Stress and strain distribution in solving result
Cloud atlas, draws stress maximum distributed points, region of stress concentration and the strain maximum distributed points of micro-acceleration gauge；Assume now
Maximum stress value suffered by micro-acceleration gauge is τs；
3.5）If τs<[τ], shows that the function of micro-acceleration gauge is normal, then continue to increase micro-acceleration gauge vibration acceleration load
Lotus；Repeat step 3.4）, until τs>When [τ], show the dysfunction of micro-acceleration gauge；Assume that vibration acceleration now is carried
Lotus is a1, it is assumed that now the maximum strain value suffered by micro-acceleration gauge is εs；If maximum strain value εsPermitting less than micro-acceleration gauge
Perhaps range of strain, then continue to increase vibration acceleration load to micro-acceleration gauge；Repeat step 3.4）, until maximum strain value εs
More than the permission range of strain of micro-acceleration gauge；Assume that vibration acceleration load now is a2；If a1>A2, then determine a2
For the maximum vibration acceleration that micro-acceleration gauge can bear；If a1<A2, then be defined as what micro-acceleration gauge can bear by a1
Maximum vibration acceleration；
4）Reliablility simulation is carried out to micro-acceleration gauge under temperature, humidity, vibration integrated stress, is comprised the following steps that：
4.1）Repeat step 2.2）；Repeat step 3.2）；According to the use humidity range of micro-acceleration gauge, the starting of emulation is set
Humidity, sets humidity variation delta H；
4.2）According to simulation model, temperature loading is applied to micro-acceleration gauge using the thermodynamic analysis module of simulation software；Temperature
Degree load proceeds by increase by testing temperature has been heated；According to simulation model, using the static numerical simulation module pair of simulation software
Micro-acceleration gauge applies vibration acceleration load；Vibration acceleration load proceeds by increase by initial vibration acceleration；According to
Simulation model, to micro-acceleration gauge humidity load is applied；Humidity load proceeds by increase by start humidity, often increases humidity and becomes
Change amount Δ H is set as a sub-step；Humidity load is increasedd to over after the higher limit using humidity range, is further added by two sons
Step；
4.3）Humidity load is loaded and solved, solving result is checked；Stress and strain cloud charts in solving result, obtain
Go out stress maximum distributed points, region of stress concentration and the strain maximum distributed points of micro-acceleration gauge；Assume now micro- acceleration
The suffered maximum concentrated stress value of degree meter is Σ；
4.4）If Σ<[σ], shows that the function of micro-acceleration gauge is normal, then continue to increase humidity load to micro-acceleration gauge；Repeat
Step 4.3）, until Σ>When [σ], show the dysfunction of micro-acceleration gauge；The previous height now checked in solving result
Step, determines the minimum humidity load during dysfunction of micro-acceleration gauge, and the minimum humidity load is defined as into Current Temperatures
The working limit humidity of corresponding micro-acceleration gauge under load and current vibration acceleration load；
4.5）Continue to increase vibration acceleration load to micro-acceleration gauge；Often increase vibration acceleration variation delta a and be set as one
Individual sub-step；Humidity load is applied to micro-acceleration gauge；Humidity load proceeds by increase by start humidity again, often increases humidity
Variation delta H is set as a sub-step；Repeat step 4.3）-4.4）, determine that each vibration acceleration is carried under Current Temperatures load
The working limit humidity of the corresponding micro-acceleration gauge of lotus；
4.6）Continue to increase temperature loading to micro-acceleration gauge；Often increase maximum temperature variation Δ Tmax and be set as a son
Step；Vibration acceleration load is applied to micro-acceleration gauge；Vibration acceleration load is proceeded by by initial vibration acceleration again
Increase, often increase vibration acceleration variation delta a and be set as a sub-step；Humidity load is applied to micro-acceleration gauge；Humidity is carried
Loading newly proceeds by increase by start humidity, often increases humidity variation delta H and is set as a sub-step；Repeat step 4.3）-
4.4）, determine that the working limit of corresponding micro-acceleration gauge under each temperature loading and each vibration acceleration load any combination is wet
Degree.
Reliablility simulation method of the micro-acceleration gauge of the present invention under warm, wet, combined stress of shaking takes into account temperature, wet
The impact of degree, three kinds of stress of vibration to micro-acceleration gauge, and realized to micro-acceleration gauge based on Highly Accelerated Life Test technology
Carry out Reliablility simulation, thus effectively overcome that traditional micro-acceleration gauge Reliablility simulation technology simulation time is long and emulation
The problem of high cost.
The present invention is efficiently solved and there is no a kind of micro-acceleration gauge reliability based on Highly Accelerated Life Test technology at present
The problem of emulation mode, it is adaptable to the Reliablility simulation of various micro-acceleration gauges.
Specific embodiment
Reliablility simulation method of the micro-acceleration gauge under warm, wet, combined stress of shaking, the method is using following steps reality
Existing：
1）The simulation model of micro-acceleration gauge is set up using simulation software；It is special by the material of simulation model validation micro-acceleration gauge
Property；According to the material behavior of micro-acceleration gauge, draw the maximum permissible stress [τ] of micro-acceleration gauge, allow range of strain, maximum
Yield strength [σ]；
2）Reliablility simulation is carried out to micro-acceleration gauge under temperature stress, is comprised the following steps that：
2.1）According to the use environment of micro-acceleration gauge, a vibration of foundation parameter and a base of micro-acceleration gauge are primarily determined that
Plinth humidity parameter；
2.2）According to the use temperature range of micro-acceleration gauge, the testing temperature that heated of setting emulation is less than using temperature range
Higher limit, setting 5 DEG C≤temperature variation Δ T≤10 DEG C；
2.3）According to simulation model, temperature loading is applied to micro-acceleration gauge using the thermodynamic analysis module of simulation software；Temperature
Degree load proceeds by increase by testing temperature has been heated, and often increases maximum temperature variation Δ Tmax and is set as a sub-step；Temperature
Degree load is increasedd to over after the higher limit using temperature range, is further added by two sub-steps；
2.4）Temperature loading is loaded and solved, solving result is checked；Stress distribution cloud atlas in solving result, draws micro- adding
The stress maximum distributed points of speedometer and region of stress concentration；Last sub-step checked in solving result；Assume now
Maximum stress value suffered by micro-acceleration gauge is τt；
2.5）If τt<[τ], shows that the function of micro-acceleration gauge is normal, then continue to increase temperature loading to micro-acceleration gauge, often increases
Plus maximum temperature variation Δ Tmax is set as a sub-step；Repeat step 2.4）, until τt>When [τ], show micro-acceleration gauge
Dysfunction；The previous sub-step now checked in solving result, determines the minimum during dysfunction of micro-acceleration gauge
Temperature loading；Continue to increase temperature loading to micro-acceleration gauge, often increase by 1 DEG C and be set as a sub-step；Repeat step 2.4）, really
Make the upper limit of rupture temperature of micro-acceleration gauge；
3）Reliablility simulation is carried out to micro-acceleration gauge under vibration stress, is comprised the following steps that：
3.1）According to the use environment of micro-acceleration gauge, a basal temperature parameter and a base of micro-acceleration gauge are primarily determined that
Plinth humidity parameter；
3.2）According to the use acceleration range of micro-acceleration gauge, the initial vibration acceleration of emulation is set as 1gn, setting vibration
Acceleration change amount Δ a is 0.5gn；
3.3）According to simulation model, vibration acceleration is applied to micro-acceleration gauge using the static numerical simulation module of simulation software and is carried
Lotus；Vibration acceleration load proceeds by increase by initial vibration acceleration, often increases vibration acceleration variation delta a and is set as
One sub-step, the retention time of each sub-step is 10min；
3.4）Vibration acceleration load is loaded and solved, solving result is checked；Stress and strain distribution in solving result
Cloud atlas, draws stress maximum distributed points, region of stress concentration and the strain maximum distributed points of micro-acceleration gauge；Assume now
Maximum stress value suffered by micro-acceleration gauge is τs；
3.5）If τs<[τ], shows that the function of micro-acceleration gauge is normal, then continue to increase micro-acceleration gauge vibration acceleration load
Lotus；Repeat step 3.4）, until τs>When [τ], show the dysfunction of micro-acceleration gauge；Assume that vibration acceleration now is carried
Lotus is a1, it is assumed that now the maximum strain value suffered by micro-acceleration gauge is εs；If maximum strain value εsPermitting less than micro-acceleration gauge
Perhaps range of strain, then continue to increase vibration acceleration load to micro-acceleration gauge；Repeat step 3.4）, until maximum strain value εs
More than the permission range of strain of micro-acceleration gauge；Assume that vibration acceleration load now is a2；If a1>A2, then determine a2
For the maximum vibration acceleration that micro-acceleration gauge can bear；If a1<A2, then be defined as what micro-acceleration gauge can bear by a1
Maximum vibration acceleration；
4）Reliablility simulation is carried out to micro-acceleration gauge under temperature, humidity, vibration integrated stress, is comprised the following steps that：
4.1）Repeat step 2.2）；Repeat step 3.2）；According to the use humidity range of micro-acceleration gauge, the starting of emulation is set
Humidity, sets humidity variation delta H；
4.2）According to simulation model, temperature loading is applied to micro-acceleration gauge using the thermodynamic analysis module of simulation software；Temperature
Degree load proceeds by increase by testing temperature has been heated；According to simulation model, using the static numerical simulation module pair of simulation software
Micro-acceleration gauge applies vibration acceleration load；Vibration acceleration load proceeds by increase by initial vibration acceleration；According to
Simulation model, to micro-acceleration gauge humidity load is applied；Humidity load proceeds by increase by start humidity, often increases humidity and becomes
Change amount Δ H is set as a sub-step；Humidity load is increasedd to over after the higher limit using humidity range, is further added by two sons
Step；
4.3）Humidity load is loaded and solved, solving result is checked；Stress and strain cloud charts in solving result, obtain
Go out stress maximum distributed points, region of stress concentration and the strain maximum distributed points of micro-acceleration gauge；Assume now micro- acceleration
The suffered maximum concentrated stress value of degree meter is Σ；
4.4）If Σ<[σ], shows that the function of micro-acceleration gauge is normal, then continue to increase humidity load to micro-acceleration gauge；Repeat
Step 4.3）, until Σ>When [σ], show the dysfunction of micro-acceleration gauge；The previous height now checked in solving result
Step, determines the minimum humidity load during dysfunction of micro-acceleration gauge, and the minimum humidity load is defined as into Current Temperatures
The working limit humidity of corresponding micro-acceleration gauge under load and current vibration acceleration load；
4.5）Continue to increase vibration acceleration load to micro-acceleration gauge；Often increase vibration acceleration variation delta a and be set as one
Individual sub-step；Humidity load is applied to micro-acceleration gauge；Humidity load proceeds by increase by start humidity again, often increases humidity
Variation delta H is set as a sub-step；Repeat step 4.3）-4.4）, determine that each vibration acceleration is carried under Current Temperatures load
The working limit humidity of the corresponding micro-acceleration gauge of lotus；
4.6）Continue to increase temperature loading to micro-acceleration gauge；Often increase maximum temperature variation Δ Tmax and be set as a son
Step；Vibration acceleration load is applied to micro-acceleration gauge；Vibration acceleration load is proceeded by by initial vibration acceleration again
Increase, often increase vibration acceleration variation delta a and be set as a sub-step；Humidity load is applied to micro-acceleration gauge；Humidity is carried
Loading newly proceeds by increase by start humidity, often increases humidity variation delta H and is set as a sub-step；Repeat step 4.3）-
4.4）, determine that the working limit of corresponding micro-acceleration gauge under each temperature loading and each vibration acceleration load any combination is wet
Degree.
When being embodied as, the step 1）-4）In, simulation software is ANSYS simulation softwares.
Claims (2)
1. Reliablility simulation method of a kind of micro-acceleration gauge under warm, wet, combined stress of shaking, it is characterised in that：The method is
Realized using following steps：
1）The simulation model of micro-acceleration gauge is set up using simulation software；It is special by the material of simulation model validation micro-acceleration gauge
Property；According to the material behavior of micro-acceleration gauge, draw the maximum permissible stress [τ] of micro-acceleration gauge, allow range of strain, maximum
Yield strength [σ]；
2）Reliablility simulation is carried out to micro-acceleration gauge under temperature stress, is comprised the following steps that：
2.1）According to the use environment of micro-acceleration gauge, a vibration of foundation parameter and a base of micro-acceleration gauge are primarily determined that
Plinth humidity parameter；
2.2）According to the use temperature range of micro-acceleration gauge, the testing temperature that heated of setting emulation is less than using temperature range
Higher limit, setting 5 DEG C≤temperature variation Δ T≤10 DEG C；
2.3）According to simulation model, temperature loading is applied to micro-acceleration gauge using the thermodynamic analysis module of simulation software；Temperature
Degree load proceeds by increase by testing temperature has been heated, and often increases maximum temperature variation Δ Tmax and is set as a sub-step；Temperature
Degree load is increasedd to over after the higher limit using temperature range, is further added by two sub-steps；
2.4）Temperature loading is loaded and solved, solving result is checked；Stress distribution cloud atlas in solving result, draws micro- adding
The stress maximum distributed points of speedometer and region of stress concentration；Last sub-step checked in solving result；Assume now
Maximum stress value suffered by micro-acceleration gauge is τt；
2.5）If τt<[τ], shows that the function of micro-acceleration gauge is normal, then continue to increase temperature loading to micro-acceleration gauge, often increases
Plus maximum temperature variation Δ Tmax is set as a sub-step；Repeat step 2.4）, until τt>When [τ], show micro-acceleration gauge
Dysfunction；The previous sub-step now checked in solving result, determines the minimum during dysfunction of micro-acceleration gauge
Temperature loading；Continue to increase temperature loading to micro-acceleration gauge, often increase by 1 DEG C and be set as a sub-step；Repeat step 2.4）, really
Make the upper limit of rupture temperature of micro-acceleration gauge；
3）Reliablility simulation is carried out to micro-acceleration gauge under vibration stress, is comprised the following steps that：
3.1）According to the use environment of micro-acceleration gauge, a basal temperature parameter and a base of micro-acceleration gauge are primarily determined that
Plinth humidity parameter；
3.2）According to the use acceleration range of micro-acceleration gauge, the initial vibration acceleration of emulation is set as 1gn, setting vibration
Acceleration change amount Δ a is 0.5gn；
3.3）According to simulation model, vibration acceleration is applied to micro-acceleration gauge using the static numerical simulation module of simulation software and is carried
Lotus；Vibration acceleration load proceeds by increase by initial vibration acceleration, often increases vibration acceleration variation delta a and is set as
One sub-step, the retention time of each sub-step is 10min；
3.4）Vibration acceleration load is loaded and solved, solving result is checked；Stress and strain distribution in solving result
Cloud atlas, draws stress maximum distributed points, region of stress concentration and the strain maximum distributed points of micro-acceleration gauge；Assume now
Maximum stress value suffered by micro-acceleration gauge is τs；
3.5）If τs<[τ], shows that the function of micro-acceleration gauge is normal, then continue to increase micro-acceleration gauge vibration acceleration load
Lotus；Repeat step 3.4）, until τs>When [τ], show the dysfunction of micro-acceleration gauge；Assume that vibration acceleration now is carried
Lotus is a1, it is assumed that now the maximum strain value suffered by micro-acceleration gauge is εs；If maximum strain value εsPermitting less than micro-acceleration gauge
Perhaps range of strain, then continue to increase vibration acceleration load to micro-acceleration gauge；Repeat step 3.4）, until maximum strain value εs
More than the permission range of strain of micro-acceleration gauge；Assume that vibration acceleration load now is a2；If a1>A2, then determine a2
For the maximum vibration acceleration that micro-acceleration gauge can bear；If a1<A2, then be defined as what micro-acceleration gauge can bear by a1
Maximum vibration acceleration；
4）Reliablility simulation is carried out to micro-acceleration gauge under temperature, humidity, vibration integrated stress, is comprised the following steps that：
4.1）Repeat step 2.2）；Repeat step 3.2）；According to the use humidity range of micro-acceleration gauge, the starting of emulation is set
Humidity, sets humidity variation delta H；
4.2）According to simulation model, temperature loading is applied to micro-acceleration gauge using the thermodynamic analysis module of simulation software；Temperature
Degree load proceeds by increase by testing temperature has been heated；According to simulation model, using the static numerical simulation module pair of simulation software
Micro-acceleration gauge applies vibration acceleration load；Vibration acceleration load proceeds by increase by initial vibration acceleration；According to
Simulation model, to micro-acceleration gauge humidity load is applied；Humidity load proceeds by increase by start humidity, often increases humidity and becomes
Change amount Δ H is set as a sub-step；Humidity load is increasedd to over after the higher limit using humidity range, is further added by two sons
Step；
4.3）Humidity load is loaded and solved, solving result is checked；Stress and strain cloud charts in solving result, obtain
Go out stress maximum distributed points, region of stress concentration and the strain maximum distributed points of micro-acceleration gauge；Assume now micro- acceleration
The suffered maximum concentrated stress value of degree meter is Σ；
4.4）If Σ<[σ], shows that the function of micro-acceleration gauge is normal, then continue to increase humidity load to micro-acceleration gauge；Repeat
Step 4.3）, until Σ>When [σ], show the dysfunction of micro-acceleration gauge；The previous height now checked in solving result
Step, determines the minimum humidity load during dysfunction of micro-acceleration gauge, and the minimum humidity load is defined as into Current Temperatures
The working limit humidity of corresponding micro-acceleration gauge under load and current vibration acceleration load；
4.5）Continue to increase vibration acceleration load to micro-acceleration gauge；Often increase vibration acceleration variation delta a and be set as one
Individual sub-step；Humidity load is applied to micro-acceleration gauge；Humidity load proceeds by increase by start humidity again, often increases humidity
Variation delta H is set as a sub-step；Repeat step 4.3）-4.4）, determine that each vibration acceleration is carried under Current Temperatures load
The working limit humidity of the corresponding micro-acceleration gauge of lotus；
4.6）Continue to increase temperature loading to micro-acceleration gauge；Often increase maximum temperature variation Δ Tmax and be set as a son
Step；Vibration acceleration load is applied to micro-acceleration gauge；Vibration acceleration load is proceeded by by initial vibration acceleration again
Increase, often increase vibration acceleration variation delta a and be set as a sub-step；Humidity load is applied to micro-acceleration gauge；Humidity is carried
Loading newly proceeds by increase by start humidity, often increases humidity variation delta H and is set as a sub-step；Repeat step 4.3）-
4.4）, determine that the working limit of corresponding micro-acceleration gauge under each temperature loading and each vibration acceleration load any combination is wet
Degree.
2. Reliablility simulation method of the micro-acceleration gauge according to claim 1 under warm, wet, combined stress of shaking, it is special
Levy and be：The step 1）-4）In, simulation software is ANSYS simulation softwares.
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|---|---|---|---|---|
| CN101639488A (en) * | 2009-08-22 | 2010-02-03 | 中北大学 | Test method of micro-accelerometer reliability intensifying test |
| CN103258080A (en) * | 2013-04-10 | 2013-08-21 | 中北大学 | Microaccelerometer reliability simulation method |
| WO2014099419A1 (en) * | 2012-12-17 | 2014-06-26 | Abbott Point Of Care Inc | A portable clinical analysis system for hematocrit measurement |
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- 2016-11-24 CN CN201611042333.6A patent/CN106650010A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639488A (en) * | 2009-08-22 | 2010-02-03 | 中北大学 | Test method of micro-accelerometer reliability intensifying test |
| WO2014099419A1 (en) * | 2012-12-17 | 2014-06-26 | Abbott Point Of Care Inc | A portable clinical analysis system for hematocrit measurement |
| CN103258080A (en) * | 2013-04-10 | 2013-08-21 | 中北大学 | Microaccelerometer reliability simulation method |
Non-Patent Citations (2)
| Title |
|---|
| 杨江涛 等: "MEMS 微加速度计在振动环境下的可靠性研究", 《电子器件》 * |
| 陈员娥 等: "温湿度环境下高量程加速度计可靠性研究", 《传感技术学报》 * |
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Application publication date: 20170510 |