CN105466698A - Method and device for endurance test of auxiliary frame assembly - Google Patents
Method and device for endurance test of auxiliary frame assembly Download PDFInfo
- Publication number
- CN105466698A CN105466698A CN201510977760.2A CN201510977760A CN105466698A CN 105466698 A CN105466698 A CN 105466698A CN 201510977760 A CN201510977760 A CN 201510977760A CN 105466698 A CN105466698 A CN 105466698A
- Authority
- CN
- China
- Prior art keywords
- subframe assembly
- real vehicle
- subframe
- signal
- drive singal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/04—Suspension or damping
Abstract
The invention discloses a method and device for an endurance test of an auxiliary frame assembly. The method for the endurance test of the auxiliary frame assembly comprises the steps that a corresponding driving signal corresponding to an actual vehicle situation related to the endurance test is acquired; and the endurance test is carried out to the auxiliary frame assembly on a testing table frame based on the corresponding driving signal. The device for the endurance test of the auxiliary frame assembly comprises a driving signal storage unit used to store the corresponding driving signal corresponding to the actual vehicle situation, and the testing table frame used to install the auxiliary frame assembly and used to apply the corresponding diving signal or a corresponding driving signal combination to the auxiliary frame assembly on the testing table frame. According to the method and device for the endurance test of the auxiliary frame assembly disclosed by the invention, the driving signal corresponding to the actual vehicle situation is used to test endurance of the auxiliary frame assembly on the testing table frame. In this way, actual fatigue endurance life and a fault mode of the auxiliary frame assembly can be obtained.
Description
Technical field
The present invention relates to a kind of automotive system parts assembly detection field, especially relate to a kind of subframe assembly endurance test method and device.
Background technology
Subframe assembly is one of the most key important support unit assembly of suspension system, supported vehicle propons and suspension, is also the important support unit of steering box etc. simultaneously, also has and intercepts and the effect such as Random Vibration Load reduced from road surface.The resistance to performance of waiting so long of subframe assembly directly has influence on the security of vehicle and the multinomial performance such as turn to behaviour steady.Therefore, the endurancing of subframe assembly is one of Key experiments project of auto parts and components assembly.
Current subframe assembly long duration test mainly based on standard carry out determine frequency, etc. the long duration test of amplitude, this loading method and subframe assembly road load relation indefinite, its result can not embody true lifetime and the failure condition of subframe assembly.
Therefore, wish a kind of technical scheme to overcome or at least alleviate at least one in the above-mentioned defect of prior art.
Summary of the invention
A kind of subframe assembly endurance test method is the object of the present invention is to provide to overcome or at least alleviate at least one in the above-mentioned defect of prior art.
For achieving the above object, the invention provides a kind of subframe assembly endurance test method, described subframe assembly endurance test method comprises: obtain the corresponding drive singal that the real vehicle operating mode relevant to endurancing is corresponding, based on described corresponding drive singal, test-bed carries out endurancing to subframe assembly.
Preferably, determine with the method comprised the steps the corresponding drive singal that the real vehicle operating mode relevant to endurancing is corresponding:
Step S1: gather the real vehicle strain signal of subframe assembly under real vehicle operating mode;
Step S2: on test-bed, analog drive signal is applied to subframe assembly;
Step S3: the response strain signal gathering subframe assembly;
Step S4: judge to respond error between strain signal and real vehicle strain signal whether in allowed band, if not, go to step S5; Otherwise go to step S6;
Step S5: based on error correction analog drive signal, then go to step S2;
Step S6: determine that present day analog drive singal is the corresponding drive singal corresponding with real vehicle strain signal.
Preferably, step S1 comprises:
Step S11: strain-Sensing device is set on subframe assembly;
Step S12: the vehicle with subframe assembly is travelled on road;
Step S13: utilize described strain-Sensing device to gather the real vehicle strain signal of subframe assembly; And
Step S14: preserve described real vehicle strain signal.
Preferably, while the described real vehicle strain signal of preservation, the corresponding relation of described real vehicle strain signal and real vehicle operating mode is preserved.
Preferably, the initial driving signal starting most in determining step 2 to apply is carried out with the method comprised the steps:
Step S21: on test-bed, white noise signal is applied as drive singal to subframe assembly;
Step S22: gather the response strain signal corresponding with described white noise signal;
Step S23: based on frequency response function and the inverse function thereof of the response strain signal determination test-bed of described white noise signal and correspondence;
Step S24: calculate described initial driving signal based on described inverse function and described real vehicle strain signal.
Preferably, subframe assembly arranges strain-Sensing device and comprises: longitudinal half-bridge foil gauge and horizontal half-bridge foil gauge are set in the ball pin of the horizontal swinging arm of described subframe assembly, and strain signal line is directly fixed on the ball pin clip of steering knuckle.
Preferably, described test-bed comprises:
For supporting subframe right support abutment and the subframe left support abutment of subframe body,
Be respectively used to apply the right actuator that is used as power and left actuator to right swing arm and left swing arm;
Be respectively used to the right reaction frame of supports right actuator and left actuator and left reaction frame, and
Be respectively used to distance rod right support abutment and the distance rod left support abutment of supports right distance rod and left distance rod.
Preferably, right actuator is connected with ball pin with buckle by force snesor, oscillating bearing with left actuator, and right actuator and left actuator are 10-20 degree angle with longitudinal direction.
The present invention also provides a kind of subframe assembly durability test apparatus, and described subframe assembly durability test apparatus comprises: drive singal storage unit, for storing the corresponding drive singal corresponding with real vehicle operating mode,
Test-bed, for installing subframe assembly, and applies corresponding corresponding drive singal or the combination of corresponding drive singal to the subframe assembly being arranged on test-bed.
Preferably, described test-bed comprises:
For supporting subframe right support abutment and the subframe left support abutment of subframe body,
Be respectively used to apply the right actuator that is used as power and left actuator to right swing arm and left swing arm, right actuator and left actuator with longitudinally in 10-20 degree angle;
Be respectively used to the right reaction frame of supports right actuator and left actuator and left reaction frame, and
Be respectively used to distance rod right support abutment and the distance rod left support abutment of supports right distance rod and left distance rod.
Preferably, adopt infrared thermometer to measure the liner temperature of subframe assembly, cool with blower fan.
Preferably, adopt power controlled loading, displacement limits protection subframe assembly and equipment frock are set.
In the present invention, utilize the corresponding drive singal corresponding with real vehicle operating mode, test-bed carries out endurancing to subframe assembly.Thus, subframe assembly real fatigue endurance life-span and fault mode can be obtained.
Accompanying drawing explanation
Fig. 1 is the indicative flowchart of subframe assembly test method according to an embodiment of the invention.
Fig. 2 is the schematic diagram of subframe assembly test unit according to an embodiment of the invention.
Reference numeral:
| 1 | Subframe body | 10 | Subframe right support abutment |
| 2 | Distance rod right support abutment | 11 | Subframe left support abutment |
| 3 | Right distance rod | 12 | Left reaction frame |
| 4 | Right swing arm | 13 | Left actuator |
| 5 | Right oscillating bearing and buckle | 14 | Left force snesor |
| 6 | Right force snesor | 15 | Left oscillating bearing and buckle |
| 7 | Right actuator | 16 | Left swing arm |
| 8 | Right reaction frame | 17 | Left distance rod |
| 9 | Ground black iron | 18 | Distance rod left support abutment |
Embodiment
In the accompanying drawings, use same or similar label to represent same or similar element or there is element that is identical or similar functions.Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.
In describing the invention; term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward " etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limiting the scope of the invention.
In subframe assembly test method according to an embodiment of the invention, obtain the corresponding drive singal that the real vehicle operating mode relevant to endurancing is corresponding, based on described corresponding drive singal, test-bed carries out endurancing to subframe assembly.Thus, subframe assembly real fatigue endurance life-span and fault mode can be obtained.
Be understandable that, according to the requirement of endurancing or the difference of object, endurancing may one or more real vehicle operating modes corresponding.For example, if endurancing require inspection real vehicle travels on straight road 100,000 kilometers and on bump course traveling 50,000 kilometers.Then corresponding two kinds of real vehicle operating modes.Certainly, this is for example, and actual endurancing will be more complicated with variation, therefore, by more kinds of for correspondence real vehicle operating mode.And endurancing also will relate to the speed of a motor vehicle, dead weight capacity even weather condition etc. usually.
The corresponding drive singal corresponding with real vehicle operating mode can prestore, and also can record on test-bed before carrying out endurancing.Such as, step S1 below to step S6 can be utilized to record the corresponding drive singal of a certain operating mode.
Fig. 1 is the indicative flowchart of subframe assembly test method according to an embodiment of the invention.Subframe assembly endurance test method shown in Fig. 1 comprises the steps.
Step S1: gather the real vehicle strain signal of subframe assembly under real vehicle operating mode.Be understandable that, real vehicle strain signal is the strain signal of subframe assembly under real vehicle operating mode, or perhaps with the strain signal be arranged at subframe assembly on real vehicle under specific operation.Design parameter kind or the design parameter numerical value of real vehicle operating mode can be arranged as required, generally include: the speed of a motor vehicle, road conditions (evenness of road surface situation, climb and fall, turning etc.), load condition, weather condition (environment temperature, rain, snow, the moon, fine) etc.
Step S2: on test-bed, drive singal is applied to subframe assembly.Be understandable that, this drive singal comprises two kinds: a kind of is the initial driving signal starting most to apply, and another kind is the revised drive singal of follow-up applying.Revised drive singal adjusts relative to initial driving signal.The determination of initial driving signal can be taked various ways to determine, such as one rule of thumb determines, another kind determines according to the funtcional relationship between drive singal and strain signal.If adopt funtcional relationship to determine, funtcional relationship can obtain based on theory calculate, also can detect by experiment to determine, can also rule of thumb determine.
Step S3: the response strain signal gathering subframe assembly.
Step S4: judge to respond error between strain signal and real vehicle strain signal whether in allowed band, if not, go to step S5; Otherwise go to step S6.That is, when error exceeds allowed band, analog drive signal is adjusted, until error is within allowed band.
Step S5: based on error correction drive singal, then go to step S2.The mode revised is such as, if response strain signal exceeds real vehicle strain signal, then reduces amplitude or the frequency of analog drive signal, correspondingly to reduce the amplitude or the frequency that respond strain signal, makes it more to mate real vehicle strain signal; If response strain signal lower than real vehicle strain signal, then increases amplitude or the frequency of analog drive signal, correspondingly to increase amplitude or the frequency of response strain signal, make it more to mate real vehicle strain signal.
Step S6: determine that current drive singal is the corresponding drive singal corresponding with real vehicle strain signal.In other words, namely determine that current drive singal is the corresponding drive singal corresponding with corresponding real vehicle operating mode, because real vehicle strain signal is actually corresponding with specific real vehicle operating mode.
Be understandable that, above-mentioned step S1-S6 is the method obtaining the corresponding drive singal corresponding with certain operating mode.If need the corresponding corresponding drive singal obtaining various working, then need above-mentioned steps is performed for each specific operation.
Step S7: choose corresponding drive singal according to the requirement of endurancing, test-bed carries out endurancing to subframe assembly.
Advantageously, corresponding with various real vehicle operating mode corresponding drive singal is stored in a database.When carrying out endurancing, first determine whether corresponding drive singal corresponding to the various real vehicle operating modes relevant to endurancing is determined, if there are one or more real vehicle operating modes there is no ready-made corresponding drive singal, then perform step S1-S6, determine corresponding corresponding drive singal.
Particularly, in an embodiment, step S1 comprises following step.
Step S11: strain-Sensing device is set on subframe assembly.Described strain-Sensing device comprises longitudinal half-bridge foil gauge in the ball pin of the horizontal swinging arm being arranged on described subframe assembly and horizontal half-bridge foil gauge, and strain signal line is directly fixed on the ball pin clip of steering knuckle.Described strain-Sensing device can also be included in the strain rosette or foil gauge of sticking the lower position of the weld seam of subframe assembly, the bending equal stress place of concentrating or intensity.
Step S12: the vehicle with subframe assembly is travelled on road.Described road is testing field road normally, also can be actual road.Advantageously, described road is road conditions segmentation road clearly, clearly, more easily to set up load conditions or the corresponding relation between real vehicle operating mode and real vehicle strain signal.
Step S13: utilize described strain-Sensing device to gather the real vehicle strain signal of subframe assembly.Be understandable that, the real vehicle strain signal utilizing described strain-Sensing device to gather subframe assembly generally includes and carries out analyzing and processing, more to be standardized or more succinct strain signal to the signal collected (strain signal that foil gauge or strain rosette export).In one embodiment, described analyzing and processing comprises passage extraction, resampling, filtering, road surface signal subsection etc.Advantageously, the real vehicle strain signal of collection is transverse axis is the time, the longitudinal axis is the squiggle of strain intensity.If have multiple foil gauge or strain transducer, then will obtain many curves.When carrying out error judgment, need to consider many curves of real vehicle strain signal and the composition error between corresponding many curves responding strain signal.
Step S14: preserve described real vehicle strain signal.Be understandable that, preserve described real vehicle strain signal and comprise the squiggle preserving real vehicle strain signal, and preserve the real vehicle operating mode corresponding with described squiggle.
As previously mentioned, the road that the vehicle with subframe assembly travels can be real road, also can be testing field road.Advantageously, described road is testing field road, thus can distinguish the type of road easily, sets up the corresponding relation between the state and real vehicle strain signal of the upper traveling of different road (having different road conditions).It is pointed out that state or the real vehicle operating mode of described traveling, also comprise the speed of a motor vehicle.Further, the state of described traveling, can also comprise other any suitable parameters such as load.The parameter considered is more, and the degree of accuracy of follow-up test and analysis also will be higher, and the long duration test test result obtained also will be more accurate.
In a preferred embodiment, the initial driving signal starting most in determining step S2 to apply is carried out with the method comprised the steps.
Step S21: on test-bed, white noise signal is applied as drive singal to subframe assembly.
Step S22: gather the response strain signal corresponding with described white noise signal.
Step S23: based on frequency response function and the inverse function thereof of the response strain signal determination test-bed of described white noise signal and correspondence.Wherein, the dependent variable (output) of the frequency response function of test-bed is response strain signal, and independent variable (input) is the drive singal applied.That is, the frequency response function of test-bed represents the funtcional relationship between the drive singal of applying and response strain signal.Be understandable that, any suitable method can be adopted to determine described frequency response function.Such as, the mode of Function Fitting can be adopted repeatedly to determine described frequency response function.
Step S24: calculate described initial driving signal based on described inverse function and described real vehicle strain signal.
Be understandable that, the frequency response function of test-bed and inverse function thereof also can rule of thumb be determined, or determine according to theory calculate.Preferably, while the described real vehicle strain signal of preservation, the corresponding relation of described real vehicle strain signal and road conditions and the speed of a motor vehicle is preserved.Such as, an example real vehicle strain signal and with road conditions and speed of a motor vehicle corresponding relation as table one.
The real vehicle strain signal that table one stores and the example with road conditions and speed of a motor vehicle corresponding relation thereof
| Sequence number | Road conditions | The speed of a motor vehicle | Real vehicle strain signal |
| 1 | La (such as, smooth) | V1 (such as, 40km/h) | S1 |
| 2 | La (such as, smooth) | V2 (such as, 60km/h) | S2 |
| 3 | Lb (such as, rising and falling) | V1 (such as, 40km/h) | S3 |
| 4 | Lb (such as, rising and falling) | V2 (such as, 60km/h) | S4 |
Above-mentioned various real vehicle strain signals are processed, then can obtain corresponding drive singal.As previously mentioned, corresponding with real vehicle strain signal corresponding drive singal is determined by multiple steps of step S1 above to step S6.Be understandable that, for each real vehicle strain signal, in other words, need the real vehicle strain signal (or real vehicle operating mode) detected in long duration test, all need to determine corresponding corresponding drive singal.Advantageously, multiple real vehicle strain signal or real vehicle operating mode and corresponding drive singal corresponding are with it stored in a database.Before a durability test is performed, first determine whether the various real vehicle operating mode that will detect or real vehicle strain signal have corresponding drive singal.
The real vehicle strain signal of an example can see table two with the corresponding example of corresponding drive singal.
The example of table two real vehicle strain signal and corresponding drive singal
| Sequence number | Real vehicle strain signal | Corresponding drive singal |
| 1 | S1 | S10 |
| 2 | S2 | S20 |
| 3 | S3 | S30 |
| 4 | S4 | S40 |
Preferably, based on the requirement of endurancing for road conditions and the speed of a motor vehicle, apply corresponding drive singal or the combination of corresponding drive singal.
Such as, the testing requirements of an example is as table three.
The life requirement of table three pair vehicle
| Sequence number | Road conditions | The speed of a motor vehicle | Duration |
| 1 | La (such as, smooth) | V2 (such as, 60km/h) | T1 (such as, 500h) |
| 2 | Lb (such as, rising and falling) | V1 (such as, 40km/h) | T2 (such as, 300h) |
Then, corresponding with it drive singal combination is as table four.
The load signal that table four is determined
| Sequence number | Load signal | Load duration | Or loading number of times |
| 1 | S20 | T1 (such as, 500h) | N1 (such as, 50000 times) |
| 2 | S30 | T2 (such as, 300h) | N2 (such as, 30000 times) |
Be understandable that, the example of the simplification that above-mentioned example is only used to be convenient to the present invention is described and makes.Concrete transport condition parameter, the corresponding relation etc. of parameter, determines from the different of vehicle according to testing requirements.Thus, adopt the mode reappearing load spectrum on stand, carry out endurancing with road associated payload.
In one embodiment, concrete signal transacting and the method for simulation as follows.
Signal transacting: the analyzing and processing such as passage extraction, resampling, filtering, road surface signal subsection are carried out to the response signal (i.e. the signal of foil gauge, strain rosette output) of power, obtains real vehicle strain signal, i.e. the echo signal of bench simulation.
System model identification: the white noise signal generated by input drives 2 actuator to obtain frequency response function matrix and the inverse matrix thereof of pilot system.
Echo signal is simulated: obtain first drive singal by inverse frequency response function matrix and echo signal by computing, pilot system is driven with first drive singal, obtain stand strain-responsive signal, calculate the error between echo signal and stand strain-responsive signal, if error within the acceptable range, finishing iteration, if error can not accept, then obtain new drive singal with error correction drive singal last time, again with new drive singal drive ram, again obtain stand strain-responsive signal and the error with echo signal thereof.Constantly revise drive singal by said process, until the error of stand strain-responsive signal and echo signal reaches in acceptable scope, namely drive singal is now the corresponding drive singal corresponding with corresponding real vehicle corresponding signal or operating mode.
Durable test signal generates: according to the requirement of endurancing, and the final durable test signal applied is determined in corresponding drive singal or the combination of corresponding drive singal of choosing correspondence.The cycle index that equivalent damage and the close principle of rain stream calculate the corresponding drive singal of each operating mode is responded according to stand response and testing field, then layout combination producing durable test signal is carried out to the cycle index of each operating mode, drive pilot system to carry out reappearing the endurancing of load spectrum with this signal.
See Fig. 2, described test-bed comprises:
For supporting subframe right support abutment 10 and the subframe left support abutment 11 of subframe body 1;
Be respectively used to apply the right actuator 7 that is used as power and left actuator 13 to right swing arm 4 and left swing arm 16;
Be respectively used to right reaction frame 8 and the left reaction frame 12 of supports right actuator 7 and left actuator 13; And
Be respectively used to distance rod right support abutment 2 and the distance rod left support abutment 18 of supports right distance rod 3 and left distance rod 17.
As shown in drawings, subframe body about 1 two end is connected respectively on subframe left support abutment 11, subframe right support abutment 10, and second mate's frame support is fixed on ground black iron 9; Be separately fixed at bottom left actuator 13, right actuator 7 on left reaction frame 12 and right reaction frame 8, two reaction frames are fixed on ground black iron 9, left actuator 13 front portion is connected with the ball pin of buckle 15 with left swing arm 16 by left force snesor 14, left oscillating bearing, right actuator 7 front portion is connected with the ball pin of buckle 5 with right swing arm 4 by right force snesor 6, right oscillating bearing, and left and right actuator axis is all 10-20 degree angle with longitudinal direction; Left distance rod 17 is connected on distance rod left support abutment 18, and right distance rod 3 is connected to distance rod right support abutment 2 and connects, and two propelling rod supports are fixed on ground black iron 9.Build by stand mounting means and its state on real vehicle finally making subframe assembly in pilot system to be consistent.
Advantageously, subframe assembly durability test apparatus comprises according to an embodiment of the invention: drive singal storage unit, for storing the corresponding drive singal corresponding with real vehicle operating mode, and above-mentioned test-bed, for installing subframe assembly, and corresponding corresponding drive singal or the combination of corresponding drive singal are applied to the subframe assembly being arranged on test-bed.Be understandable that the corresponding drive singal that right actuator 7 and left actuator 13 in order to Control experiment stand apply also comprises control module.Preferably, adopt power controlled loading, displacement limits protection subframe assembly and equipment frock are set.Arrange displacement high-low limit value in long duration test process to protect pilot system, once displacement exceeds limit value, namely pilot system stops action or shutdown automatically according to facilities, avoids subframe assembly, testing equipment and frock etc. to be subject to abnormal destruction.
In a preferred embodiment, left and right actuator is connected with ball pin with buckle by force snesor, oscillating bearing, and left and right actuator axis and longitudinal direction are in 10-20 degree angle.Concrete angle value is determined according to the size cases of vertical transverse force, takes into account the effect of transverse force when guaranteeing with this based on longitudinal force.
Preferably, when carrying out endurancing, particularly in the step s 7, adopt infrared thermometer to measure the liner temperature of subframe assembly, cool with blower fan.When temperature exceedes limit value, pilot system stops action, when temperature drops to lower limit, continues test, guarantees that the temperature of lining is in normal scope with this.
The present invention gathers strain-responsive signal on real road, then analyzing and processing and iteration are carried out to signal, finally obtain the drive singal for endurancing, carry out long duration test with this drive singal, thus obtain subframe assembly real fatigue endurance life-span and fault mode.
Finally it is to be noted: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit.Those of ordinary skill in the art is to be understood that: can modify to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; These amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a subframe assembly endurance test method, is characterized in that, comprising:
Obtain the corresponding drive singal that the real vehicle operating mode relevant to endurancing is corresponding, based on described corresponding drive singal, test-bed carries out endurancing to subframe assembly.
2. subframe assembly endurance test method as claimed in claim 1, is characterized in that, determine with the method comprised the steps the corresponding drive singal that the real vehicle operating mode relevant to endurancing is corresponding:
Step S1: gather the real vehicle strain signal of subframe assembly under real vehicle operating mode;
Step S2: on test-bed, analog drive signal is applied to subframe assembly;
Step S3: the response strain signal gathering subframe assembly;
Step S4: judge to respond error between strain signal and real vehicle strain signal whether in allowed band, if not, go to step S5; Otherwise go to step S6;
Step S5: based on error correction analog drive signal, then go to step S2;
Step S6: determine that present day analog drive singal is the corresponding drive singal corresponding with real vehicle strain signal.
3. subframe assembly endurance test method as claimed in claim 2, it is characterized in that, step S1 comprises:
Step S11: strain-Sensing device is set on subframe assembly;
Step S12: the vehicle with subframe assembly is travelled on road;
Step S13: utilize described strain-Sensing device to gather the real vehicle strain signal of subframe assembly; And
Step S14: preserve described real vehicle strain signal.
4. subframe assembly endurance test method as claimed in claim 3, is characterized in that, while the described real vehicle strain signal of preservation, preserves the corresponding relation of described real vehicle strain signal and real vehicle operating mode.
5. subframe assembly endurance test method as claimed in claim 2, is characterized in that, carrys out the initial driving signal starting most in determining step 2 to apply with the method comprised the steps:
Step S21: on test-bed, white noise signal is applied as drive singal to subframe assembly;
Step S22: gather the response strain signal corresponding with described white noise signal;
Step S23: based on frequency response function and the inverse function thereof of the response strain signal determination test-bed of described white noise signal and correspondence;
Step S24: calculate described initial driving signal based on described inverse function and described real vehicle strain signal.
6. subframe assembly endurance test method as claimed in claim 2, it is characterized in that, subframe assembly arranges strain-Sensing device comprise: in the ball pin of the horizontal swinging arm of described subframe assembly, arrange longitudinal half-bridge foil gauge and horizontal half-bridge foil gauge, and strain signal line is directly fixed on the ball pin clip of steering knuckle.
7. subframe assembly endurance test method as claimed in claim 1, it is characterized in that, described test-bed comprises:
For supporting subframe right support abutment (10) and the subframe left support abutment (11) of subframe body (1),
Be respectively used to apply the right actuator (7) that is used as power and left actuator (13) to right swing arm (4) and left swing arm (16);
Be respectively used to right reaction frame (8) and the left reaction frame (12) of supports right actuator (7) and left actuator (13), and
Be respectively used to distance rod right support abutment (2) and the distance rod left support abutment (18) of supports right distance rod (3) and left distance rod (17).
8. subframe assembly endurance test method as claimed in claim 7, it is characterized in that, right actuator (7) is connected with ball pin with buckle by force snesor, oscillating bearing with left actuator (13), and right actuator (7) and left actuator (13) are 10-20 degree angle with longitudinal direction.
9. a subframe assembly durability test apparatus, is characterized in that, comprising:
Drive singal storage unit, for storing the corresponding drive singal corresponding with real vehicle operating mode,
Test-bed, for installing subframe assembly, and applies corresponding corresponding drive singal or the combination of corresponding drive singal to the subframe assembly being arranged on test-bed.
10. automobile accessory frame assembly test unit according to claim 9, it is characterized in that, described test-bed comprises:
For supporting subframe right support abutment (10) and the subframe left support abutment (11) of subframe body (1),
Be respectively used to apply the right actuator (7) that is used as power and left actuator (13) to right swing arm (4) and left swing arm (16), right actuator (7) and left actuator (13) with longitudinally in 10-20 degree angle;
Be respectively used to right reaction frame (8) and the left reaction frame (12) of supports right actuator (7) and left actuator (13), and
Be respectively used to distance rod right support abutment (2) and the distance rod left support abutment (18) of supports right distance rod (3) and left distance rod (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510977760.2A CN105466698B (en) | 2015-12-23 | 2015-12-23 | A kind of subframe assembly endurance test method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510977760.2A CN105466698B (en) | 2015-12-23 | 2015-12-23 | A kind of subframe assembly endurance test method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105466698A true CN105466698A (en) | 2016-04-06 |
| CN105466698B CN105466698B (en) | 2018-03-27 |
Family
ID=55604640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510977760.2A Active CN105466698B (en) | 2015-12-23 | 2015-12-23 | A kind of subframe assembly endurance test method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105466698B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872129A (en) * | 2016-12-23 | 2017-06-20 | 北汽福田汽车股份有限公司 | One kind support class bracket assembly endurance test method and device |
| CN107271204A (en) * | 2017-03-30 | 2017-10-20 | 中车齐齐哈尔车辆有限公司 | Non- constant amplitude thresholding data compression method and device |
| CN107917814A (en) * | 2017-11-09 | 2018-04-17 | 哈尔滨东安汽车发动机制造有限公司 | It is a kind of that the durable experimental rig of real vehicle road Pascal and method are simulated on rack |
| CN108168391A (en) * | 2017-12-08 | 2018-06-15 | 安徽凯密克企业管理咨询有限公司 | A kind of detection of subframe and clamping integrated device |
| CN110704938A (en) * | 2019-07-21 | 2020-01-17 | 南京金龙客车制造有限公司 | Electric commercial vehicle whole vehicle or part endurance test method based on four-column rack |
| CN111623909A (en) * | 2019-02-28 | 2020-09-04 | 北京新能源汽车股份有限公司 | Stress test method for double-fork-arm two-force rod |
| GB2617126A (en) * | 2022-03-30 | 2023-10-04 | Jaguar Land Rover Ltd | Vehicle load testing for active suspension systems |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007178351A (en) * | 2005-12-28 | 2007-07-12 | Bridgestone Corp | Fatigue testing device and fatigue testing method |
| CN201464190U (en) * | 2009-07-07 | 2010-05-12 | 重庆理工大学 | Motorcycle frame fatigue test apparatus |
| CN202661263U (en) * | 2012-07-09 | 2013-01-09 | 中国长安汽车集团股份有限公司四川建安车桥分公司 | Test device for rack test of front suspension and lower swing arm |
| CN102944430A (en) * | 2012-11-28 | 2013-02-27 | 重庆理工大学 | Motorcycle frame actual running load spectrum fatigue reproduction test method |
| CN102944422A (en) * | 2012-12-13 | 2013-02-27 | 重庆理工大学 | Driving load fatigue representing and testing method for transmission system of automobile |
| CN103471856A (en) * | 2013-08-30 | 2013-12-25 | 奇瑞汽车股份有限公司 | Device and method for testing front sub-frame assembly of automobile |
| CN104344962A (en) * | 2013-08-02 | 2015-02-11 | 重庆车辆检测研究院有限公司 | Motorcycle road simulation test method |
-
2015
- 2015-12-23 CN CN201510977760.2A patent/CN105466698B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007178351A (en) * | 2005-12-28 | 2007-07-12 | Bridgestone Corp | Fatigue testing device and fatigue testing method |
| CN201464190U (en) * | 2009-07-07 | 2010-05-12 | 重庆理工大学 | Motorcycle frame fatigue test apparatus |
| CN202661263U (en) * | 2012-07-09 | 2013-01-09 | 中国长安汽车集团股份有限公司四川建安车桥分公司 | Test device for rack test of front suspension and lower swing arm |
| CN102944430A (en) * | 2012-11-28 | 2013-02-27 | 重庆理工大学 | Motorcycle frame actual running load spectrum fatigue reproduction test method |
| CN102944422A (en) * | 2012-12-13 | 2013-02-27 | 重庆理工大学 | Driving load fatigue representing and testing method for transmission system of automobile |
| CN104344962A (en) * | 2013-08-02 | 2015-02-11 | 重庆车辆检测研究院有限公司 | Motorcycle road simulation test method |
| CN103471856A (en) * | 2013-08-30 | 2013-12-25 | 奇瑞汽车股份有限公司 | Device and method for testing front sub-frame assembly of automobile |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872129A (en) * | 2016-12-23 | 2017-06-20 | 北汽福田汽车股份有限公司 | One kind support class bracket assembly endurance test method and device |
| CN106872129B (en) * | 2016-12-23 | 2019-03-22 | 北汽福田汽车股份有限公司 | A kind of support class bracket assembly endurance test method and device |
| CN107271204A (en) * | 2017-03-30 | 2017-10-20 | 中车齐齐哈尔车辆有限公司 | Non- constant amplitude thresholding data compression method and device |
| CN107271204B (en) * | 2017-03-30 | 2019-07-23 | 中车齐齐哈尔车辆有限公司 | Non- constant amplitude thresholding data compression method and apparatus |
| CN107917814A (en) * | 2017-11-09 | 2018-04-17 | 哈尔滨东安汽车发动机制造有限公司 | It is a kind of that the durable experimental rig of real vehicle road Pascal and method are simulated on rack |
| CN108168391A (en) * | 2017-12-08 | 2018-06-15 | 安徽凯密克企业管理咨询有限公司 | A kind of detection of subframe and clamping integrated device |
| CN111623909A (en) * | 2019-02-28 | 2020-09-04 | 北京新能源汽车股份有限公司 | Stress test method for double-fork-arm two-force rod |
| CN111623909B (en) * | 2019-02-28 | 2021-07-30 | 北京新能源汽车股份有限公司 | Stress test method for double-fork-arm two-force rod |
| CN110704938A (en) * | 2019-07-21 | 2020-01-17 | 南京金龙客车制造有限公司 | Electric commercial vehicle whole vehicle or part endurance test method based on four-column rack |
| GB2617126A (en) * | 2022-03-30 | 2023-10-04 | Jaguar Land Rover Ltd | Vehicle load testing for active suspension systems |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105466698B (en) | 2018-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105466698A (en) | Method and device for endurance test of auxiliary frame assembly | |
| CN101592552B (en) | Method for predicting multiaxial fatigue of automobile rear suspension | |
| CN104849039A (en) | Automobile gearbox suspension test method and system | |
| US7841232B2 (en) | Method of dynamically measuring stiffness of a wheel and tire assembly | |
| US20220274599A1 (en) | Method and System for the Recognition of the Irregularities of a Road Pavement | |
| Zhao et al. | Failure mode analysis of torsion beam rear suspension under service conditions | |
| CN105865813A (en) | Test tool for steel plate spring suspension system and test method thereof | |
| CN109238601A (en) | A kind of automobile front and rear covers fixed point stiffness test method | |
| US10410290B2 (en) | Vehicle damage detector | |
| CN105865812A (en) | Test bed for commercial vehicle air suspension system and test method thereof | |
| CN104678128A (en) | Automobile speedometer and odometer inspection-correction test system and method | |
| CN104925270A (en) | Method, torsion load testing system, pressure load testing system and adjustment assembly | |
| CN105651473A (en) | Method for automatic determination of dynamic stiffness of object | |
| CN108228994B (en) | Stress calculation method for vehicle and working device under random excitation of off-road | |
| CN110967197B (en) | Automobile rollover stability analysis method | |
| CN111241724B (en) | Fatigue life prediction method for wide-body mining vehicle frame | |
| CN104849029A (en) | Sun shield test system | |
| Jang et al. | A feasible strain-history extraction method using machine learning for the durability evaluation of automotive parts | |
| Kepka et al. | From Dynamic Models of Buses to Reliable Prediction of the Fatigue Life of Their Bodyworks | |
| ITRE20000085A1 (en) | METHOD AND EQUIPMENT TO DETECT THE EFFICIENCY OF THE SHOCK ABSORBERS OF A VEHICLE | |
| Kang et al. | Improving the durability of automobile suspension systems by optimizing the elastomeric bushing compliance | |
| CN103852251A (en) | Method and system for detecting durability of automobile frame | |
| Pavel et al. | Equipment and Methodology for Detecting Clearance in Front Suspension Joints of Passenger Vehicles by Using Dynamic Acceleration | |
| Ventura et al. | Development and experimental validation of a numerical multibody model for the dynamic analysis of a counterbalance forklift truck | |
| CN112041653A (en) | Method for testing an interaction point of a vehicle component by means of a vehicle testing device and such a testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |