CN203881541U - Measuring device - Google Patents
Measuring device Download PDFInfo
- Publication number
- CN203881541U CN203881541U CN201420184778.8U CN201420184778U CN203881541U CN 203881541 U CN203881541 U CN 203881541U CN 201420184778 U CN201420184778 U CN 201420184778U CN 203881541 U CN203881541 U CN 203881541U
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- China
- Prior art keywords
- foil gauge
- data
- measuring
- strain gauge
- swing arm
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- Expired - Fee Related
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 30
- 239000011888 foil Substances 0.000 claims description 53
- 230000001133 acceleration Effects 0.000 claims description 23
- 238000005259 measurement Methods 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 14
- 238000010030 laminating Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 14
- 230000005284 excitation Effects 0.000 abstract description 12
- 238000012360 testing method Methods 0.000 abstract description 11
- 238000001228 spectrum Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 6
- 239000000725 suspension Substances 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000006096 absorbing agent Substances 0.000 abstract 4
- 230000035939 shock Effects 0.000 abstract 4
- 238000004088 simulation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model relates to a measuring device, and particularly relates to a device used for acquiring wheel center force data and wheel center vertical displacement data. The measuring device comprises a first strain gauge, a second strain gauge, a third strain gauge, a displacement sensor and a data acquisition instrument, wherein the first strain gauge is attached to a swing arm ball head and used for measuring stress data of the swing arm ball head; the second strain gauge is attached to a steering tie rod and used for measuring axial force data of the steering tie rod; the third strain gauge is attached to a shock absorber rod and used for measuring axial force data of the shock absorber rod; and the displacement sensor is connected with a shock absorber spring and used for measuring displacement of the shock absorber spring. The measuring device uses the strain gauges and the displacement sensor which are low in cost, measures a load spectrum of connecting points, which are easily measured in a suspension frame, during the road test process, virtualizes iteration technologies so as to be able to realize reproduction of wheel core excitation including the force data and the vertical displacement data by using the acquired load spectrum.
Description
Technical field
The utility model relates to a kind of measurement mechanism, particularly relates to a kind of device that contributes to obtain core wheel force data and core wheel vertical deviation data.
Background technology
The fatigue durability of automobile can be the important symbol of car load product quality.Car load dynamic load is the basic data of vehicle structure permanance, in actual road test, completely directly measure these loading spectrum costs conventionally very high, so generally by car load Simulation Analysis on Multi-body Dynamics, six component using wheel disk encourage as initial conditions, obtain the Dynamic Load Spectrum of vehicle body and chassis tie point.
But in actual road test process, the measurement of core wheel excitation is a more difficult problem always, need to directly measure with six component instrument, but this equipment is very expensive.And six component instrument can only measure the force data of core wheel, cannot obtain the vertical displacement data of core wheel, while making to implement car load Dynamics Simulation, lack necessary displacement class input, the not convergence problem while causing car load Dynamics Simulation.For head it off, the common practice of industry is on tire, to load a spring, control the drift of vehicle, but this has brought larger error undoubtedly, therefore how can facilitate and to obtain accurately core wheel force data, can obtain again the vertical displacement data of core wheel becomes automobile analyst urgent problem simultaneously.
Utility model content
The object of the utility model embodiment is to provide a kind of measurement mechanism, and this measurement mechanism solves prior art measuring wheel mental and physical efforts data and core wheel vertical deviation data simultaneously.
To achieve these goals, the utility model provides following technical scheme:
A kind of measurement mechanism, comprising:
For measuring the first foil gauge of swing arm bulb stress data, with described swing arm bulb laminating;
For measuring the second foil gauge of track rod axial force data, with described track rod laminating;
For measuring the 3rd foil gauge of vibration damper axial force data, with described damper stem laminating;
For measuring the displacement transducer of damper spring displacement data, be connected with described damper spring;
Data collecting instrument, connects described the first foil gauge, described the second foil gauge, described the 3rd foil gauge and described displacement transducer.
Preferably, described measurement mechanism also comprises:
With the acceleration transducer that the core wheel of wheel is fitted, described acceleration transducer is for measuring the acceleration of described core wheel.
Preferably, described displacement transducer is stay wire sensor.
Preferably, described the first foil gauge comprises the first foil gauge A and the first foil gauge B;
Described the first foil gauge A and the first foil gauge B are spaced apart around swing arm bulb.
Preferably, the quantity of described acceleration transducer is four, the core wheel laminating of each described acceleration transducer and a wheel.
At least there is following technique effect in the utility model embodiment:
1) the utility model utilization each foil gauge and displacement transducer cheaply, in actual road test process, by recording the data of the inner tie point of easily measuring of suspension (displacement of the stressed and damper spring of vibration damper axial force, track rod axial force, swing arm bulb) and forming loading spectrum, the loading spectrum that virtual iterative technique utilization obtains can be realized the reproduction of the core wheel excitation that comprises force data and vertical deviation data.
2) core wheel that comprises force data and vertical deviation data encourages, the not convergence problem can effectively solve car load Dynamics Simulation time, and played the computational accuracy that improves core wheel excitation and the effect that reduces experimentation cost.
Brief description of the drawings
Fig. 1 is the first foil gauge of the utility model exemplary embodiment and the position view of swing arm bulb;
Fig. 2 is the track rod exploded view of the utility model exemplary embodiment;
Fig. 3 is the first foil gauge A and the direction of measurement schematic diagram of the first foil gauge B to swing arm bulb of the utility model exemplary embodiment;
Number in the figure is as follows:
101-the first foil gauge A, 102-the first foil gauge B;
200-swing arm bulb;
300-track rod;
In institute's drawings attached, identical label is indicated similar or corresponding feature or function
Embodiment
For making object, technical scheme and the advantage of the utility model embodiment clearer, below in conjunction with accompanying drawing, specific embodiment is described in detail.
The utility model embodiment provides a kind of measurement mechanism, comprising:
The first foil gauge, fits with the swing arm bulb 200 shown in Fig. 1, and described the first foil gauge is for measuring the stress data of swing arm bulb 200;
The second foil gauge, fits with the track rod 300 shown in Fig. 2, and described the second foil gauge is for measuring the axial force data of track rod 300;
The 3rd foil gauge, with damper stem laminating, described the 3rd foil gauge is for measuring the axial force data of vibration damper;
Displacement transducer, is connected with damper spring, and described displacement transducer is for measuring the displacement data of described damper spring;
Data collecting instrument, is connected with above-mentioned each foil gauge and displacement transducer data, the data that described data collecting instrument records for gathering above-mentioned each foil gauge and displacement transducer.
Each foil gauge (the first foil gauge, the second foil gauge, the 3rd foil gauge) and displacement transducer that measurement mechanism of the present utility model uses are lower than six component instrument costs, in actual road test process, by recording the data of the inner tie point of easily measuring of suspension (displacement of the stressed and damper spring of vibration damper axial force, track rod axial force, swing arm bulb) and forming loading spectrum, the loading spectrum that virtual iterative technique utilization obtains can be realized the reproduction of the core wheel excitation that comprises force data and vertical deviation data.
Fig. 3 is the first foil gauge A and the direction of measurement schematic diagram of the first foil gauge B to swing arm bulb of the utility model exemplary embodiment, as shown in Figure 3, described the first foil gauge comprises the first foil gauge A101 and the first foil gauge B102, and described the first foil gauge A101 and the first foil gauge B102 are spaced apart around swing arm bulb 200.Wherein, the first foil gauge A101 is for the stress data of the x direction of survey sheet 3 swing arm bulbs 200, and the first foil gauge B102 is for the stress data of the y direction of survey sheet 3 swing arm bulbs 200.
Measurement mechanism of the present utility model also comprises:
Acceleration transducer (not shown), with the core wheel laminating of wheel, described acceleration transducer is for measuring the acceleration of core wheel.Acceleration transducer of the present utility model is directly measured the acceleration of core wheel, is defined as actual acceleration herein.The acceleration of the core wheel of extrapolating by virtual iterative technique, is defined as herein as calculating acceleration.By actual acceleration and the comparison of calculating acceleration, the realization that can reappear for the virtual iterative technique of upchecking comprises the result of the core wheel excitation of force data and vertical deviation data.
Described displacement transducer is stay wire sensor, and this stay wire sensor is arranged in the flexible direction of described bumper spring.
The quantity of described acceleration transducer is four, the core wheel laminating of each described acceleration transducer and a wheel, and Czech obtains the actual acceleration of four core wheels like this.
Illustrate that the core wheel that utilizes virtual iterative technique to reappear the utility model encourages the process of processing: the measuring-signal y that first obtains the inner tie point of suspension (vibration damper axial force data, track rod axial force data, swing arm bulb stress data) by test below
desired(s); Next sets up suspension multi-body Dynamics Model (referred to as many body Models), repeatedly moves many body Models by solver, and with the measuring-signal y that obtains in test
desired(s) be verification standard, constantly revise pumping signal u
n(s).As simulate signal y
n(s) with measuring-signal y
desired(s), when consistent, can judge that the excitation source signal that iteration goes out is consistent with testing field excitation source signal.
Virtual iterative computation step is as follows:
Step 1, calculation of transfer function transfer function (MBS):
F(s)＝y
0(s)/u
0(s)
Step 2, calculating excitation for the first time:
u
1(s)＝F
-1(s)y
Desired(s)
Step 3, calculate more iteration:
u
n+1(s)＝u
n(s)+F
-1(s)(y
Desired(s)-y
n(s))。
F(s) be transport function;
U
0(s) be white noise signal;
Y
0(s) response signal for being produced by white noise signal;
U
n(s) be pumping signal;
Y
desired(s) be measuring-signal;
Y
n(s) be simulate signal.
Particularly, can adopt relative damage value to be used as the criterion of convergence and the accuracy of virtual iterative technique result of calculation, the size of relative damage value has embodied the consistent degree of simulate signal statistical value and measuring-signal statistical value, relative damage value is more close to 1, the consistance of simulate signal and measuring-signal is better, generally, relative damage value, within the scope of 0.5-2, thinks that iteration result can accept.In certain concrete test of the present utility model, in the time that iteration proceeds to the 8th time [p2], the relative damage value of each signal (stress data of swing arm bulb 200x direction and y direction, the axial force data of track rod 300, the axial force data of vibration damper and the displacement of damper spring) levels off to 1, therefore the core wheel that while using the 8th time, iteration obtains excitation is as the core wheel excitation in this actual road test, it should be noted that and differ this number of times to establish a capital be 8 times, relevant with the accuracy of data measured with the accuracy of many body Models.
As from the foregoing, the utility model embodiment has following advantage:
1) the utility model utilization each foil gauge (the first foil gauge, the second foil gauge, the 3rd foil gauge) and displacement transducer cheaply, in actual road test process, by recording the data of the inner tie point of easily measuring of suspension (displacement of the stressed and damper spring of vibration damper axial force, track rod axial force, swing arm bulb) and forming loading spectrum, the loading spectrum that virtual iterative technique utilization obtains can be realized the reproduction of the core wheel excitation that comprises force data and vertical deviation data.
2) core wheel that comprises force data and vertical deviation data encourages, the not convergence problem can effectively solve car load Dynamics Simulation time, and played and improved computational accuracy, reduce the effect of experimentation cost.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. a measurement mechanism, is characterized in that, comprising:
Be used for measuring the first foil gauge of swing arm bulb (200) stress data, fit with described swing arm bulb (200);
Be used for measuring the second foil gauge of track rod (300) axial force data, fit with described track rod (300);
For measuring the 3rd foil gauge of vibration damper axial force data, with described damper stem laminating;
For measuring the displacement transducer of damper spring displacement data, be connected with described damper spring;
Data collecting instrument, connects described the first foil gauge, described the second foil gauge, described the 3rd foil gauge and described displacement transducer.
2. measurement mechanism according to claim 1, is characterized in that, also comprises:
With the acceleration transducer that the core wheel of wheel is fitted, described acceleration transducer is for measuring the acceleration of described core wheel.
3. measurement mechanism according to claim 1, is characterized in that,
Described displacement transducer is stay wire sensor.
4. measurement mechanism according to claim 1, is characterized in that,
Described the first foil gauge comprises the first foil gauge A(101) and the first foil gauge B(102);
Described the first foil gauge A(101) and the first foil gauge B(102) spaced apart around swing arm bulb (200).
5. measurement mechanism according to claim 2, is characterized in that,
The quantity of described acceleration transducer is four, the core wheel laminating of each described acceleration transducer and a wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420184778.8U CN203881541U (en) | 2014-04-16 | 2014-04-16 | Measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420184778.8U CN203881541U (en) | 2014-04-16 | 2014-04-16 | Measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203881541U true CN203881541U (en) | 2014-10-15 |
Family
ID=51682027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420184778.8U Expired - Fee Related CN203881541U (en) | 2014-04-16 | 2014-04-16 | Measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203881541U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092261A (en) * | 2015-06-03 | 2015-11-25 | 北京汽车股份有限公司 | Road load test method and system |
| CN107290148A (en) * | 2017-07-31 | 2017-10-24 | 北京新能源汽车股份有限公司 | Test bench of drive shaft NVH |
| WO2018050009A1 (en) * | 2016-09-19 | 2018-03-22 | 舍弗勒技术股份两合公司 | Online acquisition method and apparatus for load of bearing, and method and apparatus for evaluating lifetime of bearing |
| CN109115378A (en) * | 2018-07-27 | 2019-01-01 | 江铃汽车股份有限公司 | A kind of flexural pivot force test device and its test method |
| CN114838919A (en) * | 2022-03-21 | 2022-08-02 | 江铃汽车股份有限公司 | Force decoupling method of swing arm ball pin, readable storage medium and computer equipment |
| CN114894138A (en) * | 2022-06-14 | 2022-08-12 | 广汽本田汽车有限公司 | Method, system, equipment and storage medium for detecting vertical displacement difference of automobile wheel |
-
2014
- 2014-04-16 CN CN201420184778.8U patent/CN203881541U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092261A (en) * | 2015-06-03 | 2015-11-25 | 北京汽车股份有限公司 | Road load test method and system |
| CN105092261B (en) * | 2015-06-03 | 2018-03-13 | 北京汽车股份有限公司 | Road load method of testing and system |
| WO2018050009A1 (en) * | 2016-09-19 | 2018-03-22 | 舍弗勒技术股份两合公司 | Online acquisition method and apparatus for load of bearing, and method and apparatus for evaluating lifetime of bearing |
| CN107843428A (en) * | 2016-09-19 | 2018-03-27 | 舍弗勒技术股份两合公司 | Bearing load online obtaining method and device and bearing service life evaluation method and device |
| CN107290148A (en) * | 2017-07-31 | 2017-10-24 | 北京新能源汽车股份有限公司 | Test bench of drive shaft NVH |
| CN109115378A (en) * | 2018-07-27 | 2019-01-01 | 江铃汽车股份有限公司 | A kind of flexural pivot force test device and its test method |
| CN114838919A (en) * | 2022-03-21 | 2022-08-02 | 江铃汽车股份有限公司 | Force decoupling method of swing arm ball pin, readable storage medium and computer equipment |
| CN114894138A (en) * | 2022-06-14 | 2022-08-12 | 广汽本田汽车有限公司 | Method, system, equipment and storage medium for detecting vertical displacement difference of automobile wheel |
| CN114894138B (en) * | 2022-06-14 | 2023-06-30 | 广汽本田汽车有限公司 | Method, system, equipment and storage medium for detecting vertical displacement difference of automobile wheel |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |