CN109815553A - A kind of evaluation method and system of suspension system - Google Patents
A kind of evaluation method and system of suspension system Download PDFInfo
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- CN109815553A CN109815553A CN201811637750.4A CN201811637750A CN109815553A CN 109815553 A CN109815553 A CN 109815553A CN 201811637750 A CN201811637750 A CN 201811637750A CN 109815553 A CN109815553 A CN 109815553A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The present invention discloses a kind of evaluation method of suspension system, belongs to field of automobile design, and method includes: to establish vehicle car vibration TRANSFER MODEL according to the energy transmission relationship between interior each subsystem；Vehicle car vibration TRANSFER MODEL is optimized, Optimized model is obtained；It obtains the excitation that vibration source generates and obtains the evaluation data of suspension system in conjunction with Optimized model.The vibration decaying that method provided in an embodiment of the present invention does not need suspension system all directions reaches the requirement of decaying 20dB, the damping property being suspended on corresponding direction for vehicle manufacture is only needed to can achieve the corresponding direction values of all directions evaluation criterion, then the suspension just meets the damping requirements of the vehicle power assembly, that is, can be used to evaluate for whether dynamic assembly suspension designed by the vehicle power assembly meets the vehicle damping requirements.
Description
Technical field
The present invention relates to field of automobile design more particularly to the evaluation methods and system of a kind of suspension system.
Background technique
Domestic common Rubber mount system evaluation method has following three kinds now: 1, suspension system 6DOF vibrational energy
90% or more amount decoupling, and intrinsic frequency setting is reasonable；2, suspension members vibration isolating effect reaches 20dB；And vibration transmissibility wants small
In 10%.3, suspension system is transmitted to spectrum peak of the vibration acceleration on vehicle frame in 0-50Hz in idling operation and is less than
Spectrum peak is less than 5mg in 20mg, 50-500Hz.Among these, it is to suspension that suspension members vibration isolating effect, which reaches the evaluation of 20dB,
Element most directly evaluation require, the source for investigating this numerical requirements of 20dB of having no way of at present, but in actual production due to by
To the performance of different engines, the influence of the various objective factors such as subframe and stringer, suspension members vibration decaying 20dB's is wanted
It asks and is extremely difficult to, and evaluate the suspension members damping property of various types and different stage vehicle with unified 20dB numerical value
Also some are forced and do not meet actual requirement.For a long time, how objective reasonably evaluation is designed and whether the suspension of production
Meet power assembly damping requirements and often perplex damper manufacturer and main engine plants, can only be solved by compromising and giving way,
Therefore consider that studying and formulate one meets suspension members evaluation engineering practice and for different automobile types concrete condition
Method.
Summary of the invention
In order to solve problems in the prior art, the present invention provides a kind of evaluation method of suspension system and system, we
Calculating parameter used in case and the model of foundation be all by vehicle under actual condition based on measure and be calculated, root
According to the energy transmission relationship between vehicle subsystems, vibration transmissibility between computing subsystem between associated components,
Vehicle car model of vibration is established based on vibration transmissibility, and based on this model, measures the vibration number of vehicle body target point
According to, power assembly and the vibration data of body side, minimum optimization aim is vibrated with car, vibration transmissibility is carried out excellent
Change, so that the vehicle car model of vibration optimized, finally obtains the evaluation data of suspension system, and formed and be directed to specific vehicle
The evaluation method of the suspension system of type.
Specific technical solution provided in an embodiment of the present invention is as follows:
In a first aspect, the present invention provides a kind of evaluation method of suspension system, which comprises
According to the energy transmission relationship between interior each subsystem, vehicle car vibration TRANSFER MODEL is established；
Vehicle car vibration TRANSFER MODEL is optimized, Optimized model is obtained；
It obtains the excitation that vibration source generates and obtains the evaluation data of suspension system in conjunction with the Optimized model.
In some embodiments, described that vehicle car vibration TRANSFER MODEL is optimized, obtain Optimized model packet
It includes:
The excitation that vibration source generates is obtained, TRANSFER MODEL is vibrated in conjunction with the vehicle car, obtains the response of the target point；
With the minimum optimization aim of the response of the target point, dynamic assembly suspension vibration TRANSFER MODEL is carried out excellent
Change, obtains Optimized model.
In some embodiments, the minimum optimization aim of the response with the target point, to dynamic assembly suspension
Vibration TRANSFER MODEL optimizes, and obtaining Optimized model includes:
The sound rigidity for the suspension system all directions established in the dynamic assembly suspension vibration TRANSFER MODEL and suspension are
The relationship of the vibration transfer characteristic for all directions of uniting, with the minimum optimization aim of the response of the target point, to suspension system
The sound rigidity of system all directions optimizes, and the optimal vibration transfer characteristic of the suspension system all directions is obtained, to obtain
Optimized model.
In some embodiments, the energy transmission relationship according between interior each subsystem, establishes the vibration of vehicle car
Dynamic TRANSFER MODEL includes:
According to the energy transmission relationship between interior each subsystem, dynamic assembly suspension vibration TRANSFER MODEL, vehicle body are established
Apparent mass model and body structure model of vibration；
TRANSFER MODEL, the vehicle body apparent mass model and body structure vibration are vibrated according to the dynamic assembly suspension
Transitive relation between movable model establishes the vehicle car model of vibration.
In some embodiments, described to establish dynamic assembly suspension vibration TRANSFER MODEL, vehicle body apparent mass model and vehicle
Body structure model of vibration includes:
It detects the input stimulus of engine side and is transmitted to body side under the input stimulus effect of the engine side
Vibration establishes the dynamic assembly suspension vibration transmitting according to the vibration of the input stimulus of the engine side and the body side
Model；
The excitation that detection body side test point generates establishes the vehicle body apparent mass in conjunction with the vibration of the body side
Model；
Detection is transmitted to the vibration of body side target point under the incentive action that the body side test point generates, in conjunction with institute
The excitation for stating the generation of body side test point, establishes the body structure model of vibration.
Second aspect, the present invention provides a kind of commenting based on a kind of suspension system of the evaluation method of suspension system
Valence system, the system comprises:
Modeling module, for establishing the vibration transmitting of vehicle car according to the energy transmission relationship between interior each subsystem
Model；
Optimization module obtains Optimized model for optimizing to vehicle car vibration TRANSFER MODEL；
Data generation module obtains the excitation that vibration source generates and obtains the review number of suspension system in conjunction with the Optimized model
According to.
In some embodiments, the optimization module includes:
Computing module vibrates TRANSFER MODEL in conjunction with the vehicle car for obtaining the excitation of vibration source generation, obtains described
The response of target point；
First optimization module, for being shaken to dynamic assembly suspension with the minimum optimization aim of the response of the target point
Dynamic TRANSFER MODEL optimizes, and obtains Optimized model.
In some embodiments, the modeling module includes:
Subsystem model establishes module, for it is total to establish power according to the energy transmission relationship between interior each subsystem
At mounting vibration TRANSFER MODEL, vehicle body apparent mass model and body structure model of vibration；
Subsystem model synthesis module, it is apparent for vibrating TRANSFER MODEL, the vehicle body according to the dynamic assembly suspension
Transitive relation between quality model and the body structure model of vibration establishes the vehicle car model of vibration.
In some embodiments, the subsystem model establishes module and includes:
Dynamic assembly suspension vibration TRANSFER MODEL establishes module, for detecting the input stimulus of engine side and in the hair
The vibration of body side is transmitted under the input stimulus effect of motivation side, according to the input stimulus of the engine side and the vehicle body
The dynamic assembly suspension vibration TRANSFER MODEL is established in the vibration of side；
Vehicle body apparent mass model building module, for detecting the excitation of body side test point generation, in conjunction with the vehicle body
The vehicle body apparent mass model is established in the vibration of side；
Body structure model of vibration establishes module, passes under the incentive action that the body side test point generates for detecting
It is delivered to the vibration of body side target point, in conjunction with the excitation that the body side test point generates, establishes the body structure vibration mould
Type.
Compared with the evaluation method of traditional suspension system, the embodiment of the present invention is had the following beneficial effects:
Vibration according to the energy transmission relationship between vehicle subsystems, between computing subsystem between associated components
Transmission characteristic establishes vehicle car model of vibration based on vibration transmissibility, and based on this model, measures vehicle body target point
Vibration data, power assembly and body side vibration data, minimum optimization aim is vibrated with car, to vibration transmissibility
It optimizes, so that the vehicle car model of vibration optimized, finally obtains the evaluation data of suspension system, and formed and be directed to
The evaluation method of the suspension system of specific vehicle.
In the present invention, the vibration decaying for not needing suspension system all directions reaches the requirement of decaying 20dB, it is only necessary to
It can achieve the corresponding direction number of all directions evaluation criterion for the damping property of vehicle manufacture being suspended on corresponding direction
Value, then the suspension just meets the damping requirements of the vehicle power assembly, that is, can be used to evaluate for designed by the vehicle power assembly
Whether dynamic assembly suspension meets the vehicle damping requirements.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of flow chart of the evaluation method for suspension system that the embodiment of the present invention one provides；
Fig. 2 is the vibration transmitting form schematic diagram between certain vehicle car two subsystems that the embodiment of the present invention one provides；
Fig. 3 is the vibration TRANSFER MODEL schematic diagram for being transmitted to interior target point that the embodiment of the present invention one provides；
Fig. 4 is the vibration actually measured at target point and obtained using the present embodiment method that the embodiment of the present invention one provides
The contrast schematic diagram for the optimization vibration arrived；
Fig. 5 is certain vehicle evaluation criterion schematic diagram that the embodiment of the present invention one provides；
Fig. 6 is a kind of block diagram of the evaluation system for suspension system that the embodiment of the present invention one provides.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached in the embodiment of the present invention
Figure, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only this
Invention a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
Embodiment one
Fig. 1 is a kind of flow chart of the evaluation method for suspension system that the embodiment of the present invention one provides, shown referring to Fig.1,
This method comprises the following steps:
S1, according to the energy transmission relationship between interior each subsystem, establish vehicle car vibration TRANSFER MODEL.
The step includes:
S11, according to the energy transmission relationship between interior each subsystem, establish dynamic assembly suspension vibration TRANSFER MODEL,
Vehicle body apparent mass model and body structure model of vibration.
Specifically, being being attached by elastic element (such as suspension) between interior each subsystem, Fig. 2 shows two
Form is transmitted in vibration between subsystem.As seen from Figure 2, two subsystems are body subsystem and chassis subsystem respectively
System, body subsystem and chassis subsystem are connected by elastic element (as suspended).It is carrying out between interior subsystem
When vibration and noise test, driving source is generally referred to as masters, target point is referred to as passive side.It is with powertrain mounting system
Example, is defined as masters for the engine side of dynamic assembly suspension, and suspends body side and be defined as passive side, and suspension is started
Pusher side is linked together with body side by suspending this flexible link, becomes male part.Thus dynamic assembly suspension vibration passes
Pass model be exactly by male part connect masters to passive side energy transmission mathematic(al) representation.Similarly, vehicle body is apparent
Quality model and body structure model of vibration are also the mathematic(al) representation by the energy transmission of corresponding masters to passive side.
Dynamic assembly suspension vibrates TRANSFER MODEL are as follows: Hmounti=abodysidei/aenginesidei。
Wherein, i indicates suspension point number, and it is three directions of x, y, z respectively that there are three directions for suspension point；abodysideiIt indicates
Suspend the vibration acceleration of body side；aenginesideiIndicate suspension engine side vibration acceleration.Due in test, suspending system
Unite exciting force measurement it is relatively difficult, and error is larger, therefore with the suspension both ends vibration acceleration for being easier to measurement in engineering
Size evaluate powertrain mounting system damping behavior.Specifically, in test, by automobile in-place fixation neutral idle,
Respectively arrange that a three-dimensional sensor, the sensor measurement engine inputted vibration of engine side motivate at each hanging members both ends,
The sensor measurement of body side is transmitted to the vibration on vehicle body, and the vibration signal that measurement obtains is handled analysis on frequency domain
Obtain above-mentioned dynamic assembly suspension vibration TRANSFER MODEL.
Vehicle body apparent mass model are as follows: Zi=Fhammmeri/abodysidei。
Wherein, i indicates suspension point number, and it is three directions of x, y, z respectively that there are three directions for suspension point；FhammeriIt indicates
Power hammer or vibration excitor act on the power in test point；abodysideiIndicate the vibration acceleration of suspension body side.Vehicle body apparent mass
(Z) vibration acceleration for being transmitted to vehicle body for suspension acts on generated exciting force on vehicle body, and also referred to as vehicle body acceleration hinders
Anti-, to be suspended at the structural strength of junction on vehicle body related with this for the size of exciting force.Specifically, being torn open first in test
Power assembly is unloaded, is motivated, and arrange acceleration transducer in test point, is recorded sharp in test point with vibration excitor or power hammer
Vibration force signal and vibratory response acceleration signal are analyzed, and the vehicle body apparent mass of test point can be obtained.
Body structure model of vibration are as follows: Hbodyi=aaimi/Fhammeri。
Wherein, i indicates suspension point number, and it is three directions of x, y, z respectively that there are three directions for suspension point；aaimiIndicate vehicle
The vibration of interior target point；FhammeriIndicate that power hammer or vibration excitor act on the power in test point.The body side of dynamic assembly suspension
After the incentive action passed over by suspension, vibrational energy passes through vehicle body to transmitting everywhere, so as to cause interior target point (example
Vibration such as: operator's seat seat rail).Specifically, can firmly hammer into shape in test or vibration excitor is in dynamic assembly suspension body side
It is motivated, while measuring the vibration acceleration signal at interior target point.
S12, vibrated according to dynamic assembly suspension TRANSFER MODEL, vehicle body apparent mass model and body structure model of vibration it
Between transitive relation, establish vehicle car model of vibration.
Specifically, vehicle car model of vibration is that (dynamic assembly suspension vibrates TRANSFER MODEL, vehicle body table to above three model
Appearance quality model and body structure model of vibration) transmitting step by step, thus, vehicle car model of vibration are as follows: Htotali=Hmounti
×Zi×Hbodyi。
Wherein, i indicates suspension point number, and it is three directions of x, y, z respectively that there are three directions for suspension point；HmountiIndicate dynamic
Power assembly mounting vibration TRANSFER MODEL；ZiIndicate vehicle body apparent mass model；HbodyiIndicate body structure model of vibration.
Illustratively, Fig. 3, which is shown, is transmitted at seat guide rail, at steering wheel, at instrument board and shift four
The vibration TRANSFER MODEL of point.
S2, vehicle car vibration TRANSFER MODEL is optimized, obtains Optimized model.
The step includes:
S21, the excitation that vibration source generates is obtained, vibrates TRANSFER MODEL in conjunction with vehicle car, obtains the response of target point.
Specifically, by excitation and transmission function phase product, being passed according to nonlinear system principle so as to obtain each path
It is delivered to the vibration signal of interior target point.
That is, the response of target point are as follows: Ptotal=∑ Fsource×Htotal。
S22, with the minimum optimization aim of the response of the target point, dynamic assembly suspension vibration TRANSFER MODEL is carried out
Optimization, obtains Optimized model.
The process includes:
S221, minimum target function is chosen.
Specifically, based on the vehicle car model of vibration that test data is established, by the vibration acceleration at interior target point
Absolute value is minimum, that is, target point response minimum is as objective function.Wherein, target point can be one, or more
It is a.
S222, the variable for selecting optimization design.
Specifically, the vehicle car model of vibration based on foundation, dynamic assembly suspension is vibrated and suspends system in TRANSFER MODEL
Variable of the vibration transmissibility for all directions of uniting as optimization design.
As a kind of preferably embodiment, firstly, choosing four suspension points (that is: front-suspensions, rear overhang in suspension system
Set, it is left suspension and right suspension), according to dynamic assembly suspension vibrate TRANSFER MODEL, establish suspension point all directions (that is: x, y and z tri-
A direction) sound rigidity and vibration transfer characteristic relationship, the sound rigidity of suspension point all directions is optimized, can be obtained
To the optimal vibration transfer characteristic of suspension point all directions.
S223, optimization constraint condition is determined.
In practice, the shore hardness of rubber mounting is between 45~65 degree, generally at 50 degree or so for production.Since shore is hard
There is no stringent corresponding relationships with specific rubber mounting rigidity for degree, also quantify the two without specific mathematic(al) representation
Between relationship, therefore be generally determined by testing.
In the present embodiment, it is first determined the suspension Static stiffness of car, generally between 100~500N/mm, it is determined that suspension
Static stiffness range after, between 0~200Hz by emulate method determine biography of the suspension system within the scope of said frequencies
Pass rate range.It is that can determine the vibration transmissibility range of suspension of vehicle all directions, and can guarantee excellent according to above-mentioned steps
Change obtained suspension parameter may be implemented in actual production.
S224, selection optimized calculation method, the vibration transmissibility after being optimized.
In the present embodiment, linear multivariate function minimum value method for solving is selected to carry out the vibration transmissibility of suspension
Optimization calculates.The optimization method can be used to handle the minimum problems of Constrained Nonlinear multivariable equation, while can locate
Manage the algorithm for the continuous optimization problems that those aim to solve the problem that sparse and regular large scale problem.
S225, the vibration transmissibility input vehicle car after optimization is vibrated in TRANSFER MODEL, obtains Optimized model.
S3, the excitation for obtaining vibration source generation obtain the evaluation data of suspension system in conjunction with the Optimized model.
Specifically, using the exciting force of suspension point all directions each in the Engine Mounting System tested as input stimulus,
And combine Optimized model, the result of oscillation of each suspension point all directions after being optimized, by each suspension point each side after optimization
To result of oscillation carry out root mean square processing, the evaluation data of suspension system can be obtained.
Illustratively, Fig. 4 shows the vibration decay calculation in three directions of x, y, z that certain vehicle pilot set is target point
As a result.In the figure, dotted line represents vibration actually measured at pilot set, and solid line is represented using the present invention program acquisition
Result of oscillation after optimization.From this figure, it can be seen that method provided in an embodiment of the present invention can very effective reduction car
Vibration.
Fig. 5 is the review number for obtain after root mean square processing to the result of oscillation of each suspension point all directions after optimization
According to.It can be seen that the vibration dampening characteristic of each suspension point all directions does not need to entirely reach the requirement of decaying 20dB i.e.
The requirement of interior vibration decaying can be met, the evaluation of general suspension system all directions decaying vibration 20dB requires simultaneously in industry
Engineering reality is not met.
Fig. 6 is a kind of block diagram of the evaluation system of suspension system shown according to an exemplary embodiment, as shown in fig. 6,
The system 100 includes:
Modeling module 1, for establishing the vibration transmitting of vehicle car according to the energy transmission relationship between interior each subsystem
Model, modeling module 1 include:
Subsystem model establishes module 11, for establishing power according to the energy transmission relationship between interior each subsystem
Assembly mounting vibration TRANSFER MODEL, vehicle body apparent mass model and body structure model of vibration；
Subsystem model establishes module 11
Dynamic assembly suspension vibration TRANSFER MODEL establishes module 111, for detecting the input stimulus of engine side and sending out
The vibration of body side is transmitted under the input stimulus effect of motivation side, according to the vibration of the input stimulus of engine side and body side
Establish dynamic assembly suspension vibration TRANSFER MODEL；
Vehicle body apparent mass model building module 112, for detecting the excitation of body side test point generation, in conjunction with body side
Vibration, establish vehicle body apparent mass model；
Body structure model of vibration establishes module 113, passes under the incentive action that body side test point generates for detecting
It is delivered to the vibration of body side target point, in conjunction with the excitation that body side test point generates, establishes body structure model of vibration.
Subsystem model synthesis module 12, for vibrating TRANSFER MODEL, vehicle body apparent mass mould according to dynamic assembly suspension
Transitive relation between type and body structure model of vibration establishes the vehicle car model of vibration.
Optimization module 2 obtains Optimized model, optimization optimization mould for optimizing to vehicle car vibration TRANSFER MODEL
Block 2 includes:
Computing module 21 vibrates TRANSFER MODEL in conjunction with vehicle car, obtains target point for obtaining the excitation of vibration source generation
Response；
First optimization module 22 vibrates dynamic assembly suspension for the minimum optimization aim of response with target point
TRANSFER MODEL optimizes, and obtains Optimized model.
Data generation module 3, the excitation for obtaining vibration source generation obtain the evaluation of suspension system in conjunction with Optimized model
Data.
It should be understood that the evaluation system of suspension system provided by the above embodiment is in the evaluation side for executing suspension system
When method, only the example of the division of the above functional modules, in practical application, it can according to need and by above-mentioned function
Distribution is completed by different functional modules, i.e., the internal structure of system is divided into different functional modules, to complete above retouch
The all or part of function of stating.In addition, the evaluation system of suspension system provided by the above embodiment and the evaluation of suspension system
Embodiment of the method belongs to same design, and specific implementation process is detailed in embodiment of the method, and which is not described herein again.
Although the preferred embodiment in the embodiment of the present invention has been described, once a person skilled in the art knows
Basic creative concept, then additional changes and modifications may be made to these embodiments.So appended claims are intended to explain
Being includes preferred embodiment and all change and modification for falling into range in the embodiment of the present invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (9)
1. a kind of evaluation method of suspension system, which is characterized in that the described method includes:
According to the energy transmission relationship between interior each subsystem, vehicle car vibration TRANSFER MODEL is established；
Vehicle car vibration TRANSFER MODEL is optimized, Optimized model is obtained；
It obtains the excitation that vibration source generates and obtains the evaluation data of suspension system in conjunction with the Optimized model.
2. the method according to claim 1, wherein described excellent to vehicle car vibration TRANSFER MODEL progress
Change, obtaining Optimized model includes:
The excitation that vibration source generates is obtained, TRANSFER MODEL is vibrated in conjunction with the vehicle car, obtains the response of the target point；
With the minimum optimization aim of the response of the target point, dynamic assembly suspension vibration TRANSFER MODEL is optimized, is obtained
To Optimized model.
3. according to the method described in claim 2, it is characterized in that, the minimum optimization mesh of the response with the target point
Mark optimizes dynamic assembly suspension vibration TRANSFER MODEL, and obtaining Optimized model includes:
Sound rigidity and the suspension system for establishing the suspension system all directions in the dynamic assembly suspension vibration TRANSFER MODEL are each
The relationship of the vibration transfer characteristic in direction, it is each to the suspension system with the minimum optimization aim of the response of the target point
The sound rigidity in direction optimizes, and the optimal vibration transfer characteristic of the suspension system all directions is obtained, to be optimized
Model.
4. method according to any one of claims 1 to 3, which is characterized in that described according between interior each subsystem
Energy transmission relationship, establish vehicle car vibration TRANSFER MODEL include:
According to the energy transmission relationship between interior each subsystem, it is apparent to establish dynamic assembly suspension vibration TRANSFER MODEL, vehicle body
Quality model and body structure model of vibration；
TRANSFER MODEL, the vehicle body apparent mass model and the body structure, which are vibrated, according to the dynamic assembly suspension vibrates mould
Transitive relation between type establishes the vehicle car model of vibration.
5. according to the method described in claim 4, it is characterized in that, described establish dynamic assembly suspension vibration TRANSFER MODEL, vehicle
Body apparent mass model and body structure model of vibration include:
It detects the input stimulus of engine side and is transmitted to the vibration of body side under the input stimulus effect of the engine side,
The dynamic assembly suspension vibration TRANSFER MODEL is established according to the vibration of the input stimulus of the engine side and the body side；
The excitation that detection body side test point generates establishes the vehicle body apparent mass model in conjunction with the vibration of the body side；
Detection is transmitted to the vibration of body side target point under the incentive action that the body side test point generates, in conjunction with the vehicle
The excitation that body side test point generates, establishes the body structure model of vibration.
6. a kind of evaluation system of the suspension system based on Claims 1 to 5 any one the method, which is characterized in that institute
The system of stating includes:
Modeling module, for establishing vehicle car vibration TRANSFER MODEL according to the energy transmission relationship between interior each subsystem；
Optimization module obtains Optimized model for optimizing to vehicle car vibration TRANSFER MODEL；
Data generation module obtains the excitation that vibration source generates and obtains the evaluation data of suspension system in conjunction with the Optimized model.
7. system according to claim 6, which is characterized in that the optimization module includes:
Computing module vibrates TRANSFER MODEL in conjunction with the vehicle car, obtains the target for obtaining the excitation of vibration source generation
The response of point；
First optimization module, for vibrating and passing to dynamic assembly suspension with the minimum optimization aim of the response of the target point
It passs model to optimize, obtains Optimized model.
8. system according to claim 6 or 7, which is characterized in that the modeling module includes:
Subsystem model establishes module, for it is outstanding to establish power assembly according to the energy transmission relationship between interior each subsystem
Set vibration TRANSFER MODEL, vehicle body apparent mass model and body structure model of vibration；
Subsystem model synthesis module, for vibrating TRANSFER MODEL, the vehicle body apparent mass according to the dynamic assembly suspension
Transitive relation between model and the body structure model of vibration establishes the vehicle car model of vibration.
9. system according to claim 8, which is characterized in that the subsystem model establishes module and includes:
Dynamic assembly suspension vibration TRANSFER MODEL establishes module, for detecting the input stimulus of engine side and in the engine
It is transmitted to the vibration of body side under the input stimulus effect of side, according to the input stimulus of the engine side and the body side
The dynamic assembly suspension vibration TRANSFER MODEL is established in vibration；
Vehicle body apparent mass model building module, for detecting the excitation of body side test point generation, in conjunction with the body side
Vibration, establishes the vehicle body apparent mass model；
Body structure model of vibration establishes module, is transmitted under the incentive action that the body side test point generates for detecting
The vibration of body side target point establishes the body structure model of vibration in conjunction with the excitation that the body side test point generates.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111678666A (en) * | 2020-06-09 | 2020-09-18 | 安徽江淮汽车集团股份有限公司 | Method, device and equipment for detecting vibration isolation performance of engine mount and storage medium |
| CN112084687A (en) * | 2020-08-18 | 2020-12-15 | 中国第一汽车股份有限公司 | Rigidity improvement design method for suspension driving end bracket of automobile power system |
| CN112434372A (en) * | 2020-11-27 | 2021-03-02 | 中国第一汽车股份有限公司 | Vibration isolation and sound insulation performance analysis method for automobile suspension system |
| CN112461474A (en) * | 2020-12-09 | 2021-03-09 | 安徽江淮汽车集团股份有限公司 | Method for testing vibration transmission sensitivity of parts |
| CN113758557A (en) * | 2020-06-05 | 2021-12-07 | 上海汽车集团股份有限公司 | Method and system for acquiring vibration noise of vehicle structure |
| CN114934976A (en) * | 2022-06-10 | 2022-08-23 | 中国人民解放军陆军装甲兵学院士官学校 | Engine vibration control method |
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| CN112084687B (en) * | 2020-08-18 | 2023-06-13 | 中国第一汽车股份有限公司 | Design method for improving rigidity of support at suspension driving end of automobile power system |
| CN112434372A (en) * | 2020-11-27 | 2021-03-02 | 中国第一汽车股份有限公司 | Vibration isolation and sound insulation performance analysis method for automobile suspension system |
| CN112434372B (en) * | 2020-11-27 | 2022-05-10 | 中国第一汽车股份有限公司 | Vibration isolation and sound insulation performance analysis method for automobile suspension system |
| CN112461474A (en) * | 2020-12-09 | 2021-03-09 | 安徽江淮汽车集团股份有限公司 | Method for testing vibration transmission sensitivity of parts |
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