CN201819802U - Device for recognizing rigid model parameters of power assembly - Google Patents
Device for recognizing rigid model parameters of power assembly Download PDFInfo
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- CN201819802U CN201819802U CN2010205222227U CN201020522222U CN201819802U CN 201819802 U CN201819802 U CN 201819802U CN 2010205222227 U CN2010205222227 U CN 2010205222227U CN 201020522222 U CN201020522222 U CN 201020522222U CN 201819802 U CN201819802 U CN 201819802U
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- power assembly
- rigid body
- data acquisition
- acceleration transducer
- assembly rigid
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Abstract
The utility model discloses a rigid model parameter recognition device of a power assembly, and aims to provide a device for recognizing the rigid model parameters of a power assembly. The utility model adopts the technical scheme that an excitation source, an acceleration sensor, data acquisition equipment, and a computer are included; and the acceleration sensor is arranged on the surface of the rigid measuring point of the power assembly, and is connected to the data acquisition equipment, and the data acquisition equipment is connected with the computer. The device has simple, direct, and quick measuring process, and the working efficiency is improved greatly.
Description
Technical field
The utility model relates to a kind of experimental analysis device, particularly relates to a kind of recognition device of automobile power assembly rigid body mode parameter.
Background technology
The Hyundai Motor design develops towards the direction that improves engine capacity and body lightening, adopt the novel high-strength light material can alleviate complete vehicle quality, and the quality of engine is difficult to alleviate, and quality proportion in complete vehicle quality of engine is risen to some extent.So engine luggine increases to the influence of car load, becomes a main vibration source of vehicle, its vibration causes the vibration of vehicle body after the suspension system transmission.For optimize power assembly to car load NVH [the Noise(noise), Vibration(vibration), the Harshness(sound vibration roughness)] vibration effect of performance, power assembly rigid body mode parameter recognition just seems particularly important in power assembly suspension system design and coupling.
General power assembly rigid body mode parameter recognition is to obtain three major parameters of mode (model frequency, damping ratio, Mode Shape) by match transport function (Frequency Response Functions), and transport function need be by applying the exciting force of certain feature on by geodesic structure, and obtaining the vibration response signal of structure under certain degree of freedom could obtain.Therefore, in traditional rigid body mode parameter recognition process, must measure exciting force.
For many civil engineerings and plant equipment, because factors such as their size, shape, frangible, position, be difficult to by vibrator or the excitation of power hammer, and since these civil engineering equipment at extraneous power and machinery under the vibration condition that self produces, for example: the engine in wind-force, the vehicle that travels and the work etc., in these cases, obtaining of exciting force is difficult to, some or even impossible.Therefore, need a kind of new proving installation, obtain under the condition of exciting force not needing, identify the rigid body mode parameter of power assembly.
November 19 2008 day for announcing, notification number is that the power assembly experimental apparatus of CN201152811Y discloses such technical scheme: it comprises engine and dynamometer machine, engine is connected with variator, the output shaft of variator respectively and left half axle, right axle shaft links to each other, right axle shaft is linked to each other with upper transfer gear by right shaft coupling, upper transfer gear and the engagement of right neutral gear, right neutral gear is fixed by intermediate shaft, right neutral gear and lower transmissioning gear engagement, transmission shaft is connected on the lower transmissioning gear, the other end of the transmission shaft driven gear that is connected down, following driven gear and the engagement of left neutral gear downside, left half axle is connected with last driven gear by middle shaft coupling, last driven gear and the engagement of left neutral gear upside, the output shaft of left neutral gear is connected by the main shaft of Left-wing Federation's axial organ and dynamometer machine, and dynamometer machine is fixed on the basic platform.It has adopted the power drive mechanism of new model, reduces by a dynamometer machine, can test the performance of engine assembly and permanance etc.This scheme can not be tested power assembly rigid body mode parameter as can be seen, more can not discern modal parameter.
The utility model content
Technical problem to be solved in the utility model provides and a kind ofly need not to discern under the situation of exciting force, can identify the novel recognition device of power assembly rigid body mode parameter.
The technical solution of the utility model is: a kind of power assembly rigid body mode parameter recognition device, comprise driving source, acceleration transducer, data acquisition equipment, computing machine, acceleration transducer is arranged on power assembly rigid body measurement point surface, and be connected to data acquisition equipment, data acquisition equipment is connected with computing machine.Acceleration transducer is bonded in the measurement point surface by carriage, avoids punching to install.Acceleration transducer is sent to computing machine by data acquisition equipment after receiving the vibration of driving source initiation, and computing machine carries out analyzing and processing to vibration data, identifies power assembly rigid body mode parameter through special algorithm.
As preferably, acceleration transducer is distributed on the geometrical body line of power assembly rigid structure.Power assembly is the car load installment state, and the branch of measurement point will roughly sketch the contours of by the geometric configuration of geodesic structure.
As preferably, acceleration transducer is adhesively fixed on the power assembly measurement point by carriage.Influence power assembly rigid structure parameter for preventing that punching from installing, degree of will speed up sensor is bonded on the measurement point by the aluminum carriage.
As preferably, be provided with the data analysis treating apparatus in the computing machine.This data analysis treating apparatus can carry out data acquisition, parameter setting, make up the initial geometric model of power assembly, and the vibration time domain raw data that will gather is carried out processing such as Fourier analysis, transport function structure, Modal Parameter Identification, modal parameter are related with geometric model, Mode Shape animation display, identify power assembly rigid body mode parameter at last.
As preferably, the excitation that driving source sends is the transient impact excitation that applies by artificial mode, or the broadband excitation of rotating by engine self.
Compared with prior art, the utility model obviously is better than traditional rigid body mode parameter recognition device, the vibration acceleration response that this device only need be measured under the power assembly condition of work can identify the rigid body mode parameter by data processing equipment, and do not need to measure the exciting force of vibrator or the excitation of power hammer, measuring process is simple, direct, quick, and work efficiency is greatly improved.
Description of drawings
Fig. 1 is the utility model synoptic diagram;
Fig. 2 is the data acquisition flow figure of the utility model data processing equipment;
Fig. 3 is the flow chart of data processing figure of the utility model data processing equipment;
Fig. 4 is a test result diagram of the present utility model.
Among Fig. 1: the 1st, driving source, the 2nd, acceleration transducer, the 3rd, data line, the 4th, data acquisition equipment, the 5th, netting twine, the 6th, computing machine, the 7th, power assembly rigid body.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Shown in Figure 1, a kind of power assembly rigid body mode parameter recognition device, comprise driving source 1, acceleration transducer 2, data acquisition equipment 4, computing machine 6, acceleration transducer 2 is arranged on power assembly rigid body 7 measurement points surface and is connected to data acquisition equipment 4 by data line 3, and data acquisition equipment 4 is connected with computing machine 6 by netting twine 5.Driving source 1 applies the transient impact excitation by artificial mode, or the excitation of the wideband of engine self rotating speed.Acceleration transducer 2 is positioned at power assembly rigid body 7 surfaces, and measurement point branch can roughly sketch the contours of by the geometric configuration of geodesic structure both power assembly rigid body shape.The logical peraluminous carriages of acceleration transducer 2 with strong viscous adhesive water adhesion at the power assembly measurement point.
Apply transient impact exciting force about 30N one jiao of engine body by driving source 1, its direction all becomes about 45 with X, Y, Z, make power assembly that the excitation input of certain energy all be arranged in three directions, acceleration transducer 2 is gathered each measurement point acceleration signal, signal is transferred to data acquisition equipment 4 by data line 3,4 pairs of original time-domain signals of collecting device are sampled and digitized processing, and record in the computing machine 6 the continual transient impact exciting force that applies in whole Measuring Time 20 seconds by netting twine 5.
Referring to Fig. 2, this figure is arranged on the data acquisition flow figure of the data processing equipment in the computing machine.The basic parameter of 001 pair of acceleration transducer of cell S is provided with; Cell S 002 is provided with measurement parameter, and it is 50Hz that frequency range is set in this example, and minimum cutoff is 1Hz, and the test duration is 20 seconds; Cell S 003 is set according to the front, sets up the power assembly initial geometric model; Cell S 004 begins to gather time domain raw data under the exciting force effect by setting duration, and institute's acquired data storage is stand-by.
Referring to Fig. 3, this figure is arranged on the basic flow sheet that data processing equipment in the computing machine carries out data processing.
Cell S 101 is called in the time domain raw data of above-mentioned 20 seconds durations, changes cell S 102 afterwards over to, carries out carrying out operations such as svd, transport function principal component structure after the Fourier analysis in short-term; Adjust by analyzing, construct needed transport function at S103, change cell S 104 over to and carry out the Modal Parameter Identification operation, change cell S 105 over to modal parameter and aforementioned geometric model are carried out association process, in cell S 106, carry out the Mode Shape animation display, finally draw actual Mode Shape through adjusting, thereby realized the identification of power assembly rigid body mode parameter.
One of them main Mode Shape, damping model frequency diagram when when Fig. 4 tests certain power assembly rigid body for using the utility model.The pitching model frequency is 17.79Hz among the figure, damping ratio 1.851%.Recognition result is true, credible, and is more convenient and swift than traditional power assembly rigid body mode parameter recognition device, efficient is high, and the result is also accurate, and therefore, the utility model is more novel, a power assembly rigid body mode parameter recognition device reliably.
This power assembly rigid body mode parameter recognition device has the following advantage: 1) be the measurement response under mechanical actual operating conditions; 2) measuring process is simple, direct, quick, only needs the acceleration transducer of measuring vibrations response to get final product; 3) this measuring process and work deformation analysis test are similar, therefore can the surveying work deformation analysis test simultaneously, i.e. Operating Deflection Shapes(ODS); 4) do not need the normal operation of intervention apparatu; 5) the frequency distribution scope of real condition of work, boundary condition, space distribution and real vibratory response and power.
Above embodiment only be used to the utility model is described and be not used in the restriction scope of the present utility model.After this external content of reading the utility model explanation, those skilled in the art can make various changes or modifications the utility model, but these equivalent form of values belong to the utility model claims institute restricted portion equally.
Claims (5)
1. power assembly rigid body mode parameter recognition device, comprise driving source, acceleration transducer, data acquisition equipment, computing machine, it is characterized in that: described acceleration transducer is arranged on power assembly rigid body measurement point surface, and be connected to data acquisition equipment, data acquisition equipment is connected with computing machine.
2. according to the described power assembly rigid body mode of claim 1 parameter recognition device, it is characterized in that: acceleration transducer is distributed on the geometrical body line of power assembly rigid structure.
3. according to claim 1 or 2 described power assembly rigid body mode parameter recognition devices, it is characterized in that: described acceleration transducer is adhesively fixed on the power assembly measurement point by carriage.
4. according to the described power assembly rigid body mode of claim 1 parameter recognition device, it is characterized in that: be provided with the data analysis treating apparatus in the described computing machine.
5. according to the described power assembly rigid body mode of claim 1 parameter recognition device, it is characterized in that: the excitation that described driving source sends is the transient impact excitation that applies by artificial mode, or encourages by the broadband that engine self rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205222227U CN201819802U (en) | 2010-09-09 | 2010-09-09 | Device for recognizing rigid model parameters of power assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205222227U CN201819802U (en) | 2010-09-09 | 2010-09-09 | Device for recognizing rigid model parameters of power assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201819802U true CN201819802U (en) | 2011-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205222227U Expired - Fee Related CN201819802U (en) | 2010-09-09 | 2010-09-09 | Device for recognizing rigid model parameters of power assembly |
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| CN (1) | CN201819802U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278340A (en) * | 2013-05-03 | 2013-09-04 | 华晨汽车集团控股有限公司 | Motive power assembly suspension vibration noise testing system and testing method |
| CN106033027A (en) * | 2015-03-09 | 2016-10-19 | 陕西重型汽车有限公司 | Rigid modal testing device and rigid modal testing method of heavy type automotive power assembly suspension system |
| CN106596131A (en) * | 2016-12-23 | 2017-04-26 | 奇瑞汽车股份有限公司 | Excitation force position, amplitude and direction determining method in vehicle body-in-white (BIW) modal test |
| CN110940528A (en) * | 2019-12-19 | 2020-03-31 | 中国人民解放军海军士官学校 | Method and system for identifying working modal parameters of diesel engine based on detonation excitation |
| CN114061987A (en) * | 2021-09-28 | 2022-02-18 | 岚图汽车科技有限公司 | Rigid body modal testing method for vehicle power assembly |
| CN115343060A (en) * | 2022-08-02 | 2022-11-15 | 一汽解放汽车有限公司 | Method and device for testing modal of power assembly of commercial vehicle and computer equipment |
-
2010
- 2010-09-09 CN CN2010205222227U patent/CN201819802U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278340A (en) * | 2013-05-03 | 2013-09-04 | 华晨汽车集团控股有限公司 | Motive power assembly suspension vibration noise testing system and testing method |
| CN103278340B (en) * | 2013-05-03 | 2016-01-06 | 华晨汽车集团控股有限公司 | A kind of dynamic assembly suspension vibration and noise test system and method for testing thereof |
| CN106033027A (en) * | 2015-03-09 | 2016-10-19 | 陕西重型汽车有限公司 | Rigid modal testing device and rigid modal testing method of heavy type automotive power assembly suspension system |
| CN106596131A (en) * | 2016-12-23 | 2017-04-26 | 奇瑞汽车股份有限公司 | Excitation force position, amplitude and direction determining method in vehicle body-in-white (BIW) modal test |
| CN110940528A (en) * | 2019-12-19 | 2020-03-31 | 中国人民解放军海军士官学校 | Method and system for identifying working modal parameters of diesel engine based on detonation excitation |
| CN110940528B (en) * | 2019-12-19 | 2022-04-19 | 中国人民解放军海军士官学校 | Method and system for identifying working modal parameters of diesel engine based on detonation excitation |
| CN114061987A (en) * | 2021-09-28 | 2022-02-18 | 岚图汽车科技有限公司 | Rigid body modal testing method for vehicle power assembly |
| CN114061987B (en) * | 2021-09-28 | 2024-04-16 | 岚图汽车科技有限公司 | Rigid body mode testing method for vehicle power assembly |
| CN115343060A (en) * | 2022-08-02 | 2022-11-15 | 一汽解放汽车有限公司 | Method and device for testing modal of power assembly of commercial vehicle and computer equipment |
| CN115343060B (en) * | 2022-08-02 | 2024-06-07 | 一汽解放汽车有限公司 | Commercial vehicle power assembly mode testing method and device and computer equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NINGBO TUOPU GROUP CO., LTD. Free format text: FORMER NAME: NINGBO TUOPU BRAKING SYSTEMS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 315800 Zhejiang province Ningbo Beilun Daqi Longtan Road No. 1 Patentee after: Ningbo Tuopu Group Co., Ltd. Address before: 315800 Zhejiang province Ningbo Beilun Daqi Longtan Road No. 1 Patentee before: Ningbo Tuopu Steering System Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20140909 |
|
| EXPY | Termination of patent right or utility model |