CN104457541A - Automobile spiral spring displacement measurement method - Google Patents
Automobile spiral spring displacement measurement method Download PDFInfo
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- CN104457541A CN104457541A CN201410639859.7A CN201410639859A CN104457541A CN 104457541 A CN104457541 A CN 104457541A CN 201410639859 A CN201410639859 A CN 201410639859A CN 104457541 A CN104457541 A CN 104457541A
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- test sensor
- spiral spring
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- displacement
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 42
- 238000000691 measurement method Methods 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 57
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000001228 spectrum Methods 0.000 claims abstract description 14
- 238000011068 loading method Methods 0.000 claims description 27
- 238000009434 installation Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000010606 normalization Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 5
- 238000004904 shortening Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The invention discloses an automobile spiral spring displacement measurement method which is used for accurately measuring the displacement of an automobile spiral spring on an actual road. The method is characterized in that the method sequentially includes the following steps that (1) a sensor for testing is manufactured; (2) the sensor for testing is calibrated; (3) load spectrums are collected; (4) a load is calculated and converted. The measurement method is easy to implement, accurate and reliable. The sensor for testing is manufactured, the sensor for testing is calibrated, the load spectrums on an actually-measured test road are collected, and the load is calculated and converted, so that the displacement of the automobile spiral spring can be accurately measured, an accurate input condition is provided for CAE analysis in the automobile development process, accuracy and reliability of CAE analysis are greatly improved, and a guarantee is provided for shortening the test cycle in the later period and saving the test cost.
Description
Technical field
The present invention relates to displacement measurement, particularly relate to a kind of automobile spiral spring displacement measurement method.
Background technology
In existing automotive development process, in order to make exploitation vehicle parameters close to or reach desired value, early stage generally takes computer-aided engineering (Computer Aided Engineering initialism is CAE) to analyze, the structure of analyzing virtual simulated automotive and performance, its analysis precision is limited by the precision of automobile parameter and the precision of Car body model, need, to each parameter of the set up model accurate value of input as far as possible, wherein to adopt displacement signal to do real-time attitude and the precision that monitoring ensures realistic model.Be necessary to improve displacement measurement method accurately further, for accurately measuring the displacement of the automobile spiral spring in real road.
Summary of the invention
Technical matters to be solved by this invention is the defect making up above-mentioned prior art, provides a kind of automobile spiral spring displacement measurement method.
Technical matters of the present invention is solved by the following technical programs.
This automobile spiral spring displacement measurement method, for accurately measuring the displacement of the automobile spiral spring in real road.
The feature of this automobile spiral spring displacement measurement method is:
There is following step successively:
1) test sensor is made;
2) test sensor is demarcated;
3) loading spectrum is gathered;
4) LOAD FOR transforms.
Technical matters of the present invention is solved by following further technical scheme.
The making test sensor of described step 1), has step by step following successively:
11) select the torsional strain meter be within the term of validity as required, described in be in torsional strain meter within the term of validity, the grid silk comprising strainometer meets the demands without the incomplete and resistance value of strainometer;
12) surface treatment is carried out to volute spring body, comprise polishing, cleaning, strainometer is pasted onto on volute spring body by jail, require without alice;
13) insulation processing is carried out to the strainometer be pasted onto on volute spring, guarantee that every bar lead-in wire of strainometer is contactless with volute spring body, in case bonding;
14) by lead-in wire combination, the bridge-type metering circuit being welded to form needs, to its fixing process of insulating, test sensor is made, for subsequent use for demarcating entrucking.
Preferably, described step by step 11) to be 120 Ω strainometers and resistance value be in the torsional strain meter of 350 Ω one that the torsional strain meter be within the term of validity in is resistance value.
Preferably, the bridge-type metering circuit described step by step 14) is half bridge measurement circuit.
Described step 2) demarcation test sensor, have step by step following successively:
21) install the test sensor fixedly made, installation site is consistent with real vehicle installation site as far as possible, and guarantee stress in stand loading procedure and real vehicle travel in stress be consistent;
22) stand servosystem is adopted first to carry out full scale reverse cyclic loadings, unloading to test sensor, to reduce hysteresis error, then full scale is divided into many parts of loadings, unloading, and real time record loading force or displacement, mean value is read to the multi-group data of record;
23) the corresponding strain of data acquisition equipment record test sensor is adopted, or the output voltage values of record half bridge measurement circuit, except sampling rate and cutoff frequency, guarantee that tunnel name, sensitivity coefficient, bridge road coefficient, driving voltage and the range gathered with road in file is arranged and be consistent;
24) matching, normalization are carried out to the multi-group data of record, draw the relation of the corresponding strain of test sensor or the output voltage of bridge-type metering circuit and loading force or displacement, obtain calibration coefficient, complete the demarcation of test sensor.
The collection loading spectrum of described step 3), has step by step following successively:
31) install the fixing test sensor demarcated, installation site requires to determine according to vehicle associated technical parameters;
32) arrange collector and cable, in advance test sensor is comprised to the inspection of wiring and polarity;
33) steering vehicle carries out the time-domain signal data acquisition of multiple sample in the test roads of regulation, and carries out corresponding record to each time-domain signal data that gather, and is formed and gathers loading spectrum.
The LOAD FOR of described step 4) transforms, and is calculate helical spring displacement, has step by step following successively:
41) in the collection loading spectrum formed, more satisfactory test roads load is filtered out, and the test time domain channel load of sensor respective channel;
42) in the software calculating helical spring displacement, input step by step 24) in the calibration coefficient that obtains;
43) will step by step 41) time domain channel load transform through the software calculating helical spring displacement, calculate the precise displacement amount of volute spring in the test roads of regulation, in automotive development process, cae analysis provides accurate initial conditions.
The present invention's beneficial effect is compared with prior art:
Measuring method of the present invention is simple, accurately and reliably, transformed by the loading spectrum on making test sensor, demarcation test sensor, collection measured test road and LOAD FOR, can the accurate helical spring displacement of measured automobiles, for in automotive development process, cae analysis provides accurate initial conditions, greatly improve the accuracy and confidence of cae analysis, for the later stage shortens the test period, save experimentation cost and provide safeguard.
Embodiment
Below in conjunction with embodiment, the present invention will be described.
A kind of automobile spiral spring displacement measurement method, for accurately measuring the displacement of the automobile spiral spring in real road, has following step successively:
1) make test sensor, have step by step following successively:
11) the torsional strain meter be within the term of validity is selected as required, the described torsional strain meter be within the term of validity, the grid silk comprising strainometer meets the demands without the incomplete and resistance value of strainometer, the one that be resistance value to be 120 Ω strainometers and resistance value be in the torsional strain meter of 350 Ω.
12) surface treatment is carried out to volute spring body, comprise polishing, cleaning, strainometer is pasted onto on volute spring body by jail, require without alice;
13) insulation processing is carried out to the strainometer be pasted onto on volute spring, guarantee that every bar lead-in wire of strainometer is contactless with volute spring body, in case bonding;
14) by lead-in wire combination, the half bridge measurement circuit being welded to form needs, to its fixing process of insulating, test sensor is made, for subsequent use for demarcating entrucking.
2) demarcate test sensor, have step by step following successively:
21) install the test sensor fixedly made, installation site is consistent with real vehicle installation site as far as possible, and guarantee stress in stand loading procedure and real vehicle travel in stress be consistent;
22) utilize servosystem first to carry out full scale reverse cyclic loadings, unloading to test sensor, to reduce hysteresis error, then full scale is divided into many parts of loadings, unloading, and real time record loading force or displacement, mean value is read to the multi-group data of record;
23) the corresponding strain of data acquisition equipment record test sensor is utilized, or the output voltage values of record half bridge measurement circuit, except sampling rate and cutoff frequency, guarantee that tunnel name, sensitivity coefficient, bridge road coefficient, driving voltage and the range gathered with road in file is arranged and be consistent;
24) matching, normalization are carried out to the multi-group data of record, draw the relation of the corresponding strain of test sensor or the output voltage of half bridge measurement circuit and loading force or displacement, complete the demarcation of test sensor.
3) gather loading spectrum, have step by step following successively:
31) install the fixing test sensor demarcated, installation site requires to determine according to vehicle associated technical parameters;
32) arrange collector and cable, in advance test sensor is comprised to the inspection of wiring and polarity;
33) steering vehicle carries out the data acquisition of multiple sample in the test roads of regulation, and does corresponding record to each collection, is formed and gathers loading spectrum.
4) calculate helical spring displacement, have step by step following successively:
41) in the collection loading spectrum formed, more satisfactory testing field road load is filtered out, and the test time domain channel load of sensor respective channel;
42) in the software calculating helical spring displacement, the calibration coefficient obtained in calibration process is inputted;
43) the precise displacement amount of volute spring in the test roads of regulation is calculated, in automotive development process, cae analysis provides accurate initial conditions.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention; make some equivalent alternative or obvious modification without departing from the inventive concept of the premise; and performance or purposes identical, all should be considered as belonging to the scope of patent protection that the present invention is determined by submitted to claims.
Claims (7)
1. an automobile spiral spring displacement measurement method, for accurately measuring the displacement of the automobile spiral spring in real road, is characterized in that:
There is following step successively:
1) test sensor is made;
2) test sensor is demarcated;
3) loading spectrum is gathered;
4) LOAD FOR transforms.
2. automobile spiral spring displacement measurement method as claimed in claim 1, is characterized in that:
The making test sensor of described step 1), has step by step following successively:
11) select the torsional strain meter be within the term of validity as required, described in be in torsional strain meter within the term of validity, the grid silk comprising strainometer meets the demands without the incomplete and resistance value of strainometer;
12) surface treatment is carried out to volute spring body, comprise polishing, cleaning, strainometer is pasted onto on volute spring body by jail, require without alice;
13) insulation processing is carried out to the strainometer be pasted onto on volute spring, guarantee that every bar lead-in wire of strainometer is contactless with volute spring body, in case bonding;
14) by lead-in wire combination, the bridge-type metering circuit being welded to form needs, to its fixing process of insulating, test sensor is made, for subsequent use for demarcating entrucking.
3. automobile spiral spring displacement measurement method as claimed in claim 1 or 2, is characterized in that:
Described step by step 11) to be 120 Ω strainometers and resistance value be in the torsional strain meter of 350 Ω one that the torsional strain meter be within the term of validity in is resistance value.
4. automobile spiral spring displacement measurement method as claimed in claim 1 or 2, is characterized in that:
Described step by step 14) the bridge-type metering circuit in is half bridge measurement circuit.
5. automobile spiral spring displacement measurement method as claimed in claim 1, is characterized in that:
Described step 2) demarcation test sensor, have step by step following successively:
21) install the test sensor fixedly made, installation site is consistent with real vehicle installation site as far as possible, and guarantee stress in stand loading procedure and real vehicle travel in stress be consistent;
22) stand servosystem is adopted first to carry out full scale reverse cyclic loadings, unloading to test sensor, to reduce hysteresis error, then full scale is divided into many parts of loadings, unloading, and real time record loading force or displacement, mean value is read to the multi-group data of record;
23) the corresponding strain of data acquisition equipment record test sensor is adopted, or the output voltage values of record half bridge measurement circuit, except sampling rate and cutoff frequency, guarantee that tunnel name, sensitivity coefficient, bridge road coefficient, driving voltage and the range gathered with road in file is arranged and be consistent;
24) matching, normalization are carried out to the multi-group data of record, draw the relation of the corresponding strain of test sensor or the output voltage of bridge-type metering circuit and loading force or displacement, obtain calibration coefficient, complete the demarcation of test sensor.
6. automobile spiral spring displacement measurement method as claimed in claim 1, is characterized in that:
The collection loading spectrum of described step 3), has step by step following successively:
31) install the fixing test sensor demarcated, installation site requires to determine according to vehicle associated technical parameters;
32) arrange collector and cable, in advance test sensor is comprised to the inspection of wiring and polarity;
33) steering vehicle carries out the time-domain signal data acquisition of multiple sample in the test roads of regulation, and carries out corresponding record to each time-domain signal data that gather, and is formed and gathers loading spectrum.
7. automobile spiral spring displacement measurement method as claimed in claim 6, is characterized in that:
The LOAD FOR of described step 4) transforms, and is calculate helical spring displacement, has step by step following successively:
41) in the collection loading spectrum formed, more satisfactory test roads load is filtered out, and the test time domain channel load of sensor respective channel;
42) in the software calculating helical spring displacement, input step by step 24) in the calibration coefficient that obtains;
43) will step by step 41) time domain channel load transform through the software calculating helical spring displacement, calculate the precise displacement amount of volute spring in the test roads of regulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410639859.7A CN104457541A (en) | 2014-11-13 | 2014-11-13 | Automobile spiral spring displacement measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410639859.7A CN104457541A (en) | 2014-11-13 | 2014-11-13 | Automobile spiral spring displacement measurement method |
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| CN104457541A true CN104457541A (en) | 2015-03-25 |
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| CN201410639859.7A Pending CN104457541A (en) | 2014-11-13 | 2014-11-13 | Automobile spiral spring displacement measurement method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118524A (en) * | 2019-05-15 | 2019-08-13 | 胡天旭 | A kind of adhesion type resistance strain sensor assembly and its mounting process |
Citations (5)
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|---|---|---|---|---|
| CN1403264A (en) * | 2001-08-30 | 2003-03-19 | 周政明 | Stroke regulating method and device |
| CN1667387A (en) * | 2005-04-08 | 2005-09-14 | 北京交通大学 | Measuring method in normal stress and shear stress test of compression spring |
| JP2008003032A (en) * | 2006-06-26 | 2008-01-10 | Mitsutoyo Corp | Digital displacement measuring instrument |
| CN102128584A (en) * | 2010-12-26 | 2011-07-20 | 中国第一汽车集团公司 | Method for testing work displacement of helical spring of automobile suspension |
| CN103018056A (en) * | 2012-12-14 | 2013-04-03 | 奇瑞汽车股份有限公司 | Fatigue test device of automobile sliding column assembly and experiment method thereof |
-
2014
- 2014-11-13 CN CN201410639859.7A patent/CN104457541A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403264A (en) * | 2001-08-30 | 2003-03-19 | 周政明 | Stroke regulating method and device |
| CN1667387A (en) * | 2005-04-08 | 2005-09-14 | 北京交通大学 | Measuring method in normal stress and shear stress test of compression spring |
| JP2008003032A (en) * | 2006-06-26 | 2008-01-10 | Mitsutoyo Corp | Digital displacement measuring instrument |
| CN102128584A (en) * | 2010-12-26 | 2011-07-20 | 中国第一汽车集团公司 | Method for testing work displacement of helical spring of automobile suspension |
| CN103018056A (en) * | 2012-12-14 | 2013-04-03 | 奇瑞汽车股份有限公司 | Fatigue test device of automobile sliding column assembly and experiment method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 方剑光 等: "车身疲劳载荷谱的位移反求法", 《同济大学学报（自然科学版）》 * |
| 杨清梅 等: "《传感技术及应用》", 31 January 2014 * |
| 陈曦 等: "基于应变片的自由活塞斯特林制冷机位移测试研究", 《低温与超导》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118524A (en) * | 2019-05-15 | 2019-08-13 | 胡天旭 | A kind of adhesion type resistance strain sensor assembly and its mounting process |
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Application publication date: 20150325 |