CN107784133A - The collocation method of McPherson front suspension hard spot - Google Patents
The collocation method of McPherson front suspension hard spot Download PDFInfo
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- CN107784133A CN107784133A CN201610718117.2A CN201610718117A CN107784133A CN 107784133 A CN107784133 A CN 107784133A CN 201610718117 A CN201610718117 A CN 201610718117A CN 107784133 A CN107784133 A CN 107784133A
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/06—Power analysis or power optimisation
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Abstract
The present invention provides a kind of collocation method of McPherson front suspension hard spot, and it includes：S100, existing McPherson front suspension entity hard spot assembly is analyzed, obtains its hard spot coordinate；S200, based on Multi-body Dynamics Theory, McPherson front suspension Dynamics Simulation model is established with reference to hard spot coordinate；S300, obtain and compare characterisitic parameter of the Dynamics Simulation model with existing McPherson front suspension entity under given experiment condition, adjustment Dynamics Simulation model makes simulation result and measured result have preset matching degree；S400, establish McPherson front suspension associative simulation model, using hard spot coordinate as design variable, experimental design is carried out to McPherson front suspension K characteristics and/or C characteristics and/or steering characteristic, obtains each hard spot changes in coordinates to K characteristics and/or the influence degree of C characteristics and/or steering characteristic desired value；S500, aforementioned affect degree is analyzed, obtain hard spot changes in coordinates to K characteristics and/or C characteristics and/or steering characteristic desired value sensitivity matrix；McPherson front suspension hard spot is configured based on sensitivity matrix.
Description
Technical field
The present invention relates to vehicle component design field, more particularly it relates to the McPherson front suspension of vehicle
Middle improved hard spot position.
Background technology
Early stage is designed in automotive development, the exploitation design process rationally designed not only to suspension of hard spot is most important, together
When also dynamics of vehicle performance is had great significance.If suspension crucial hard spot design it is unreasonable, it will cause with
A large amount of modifications repeatedly occur in the intermediary and later stages of automotive development design afterwards, so as to extend automobile research cycle, increase design
Cost.As suspension frame structure form common in engine behind front wheel front-drive cars, MacPherson type front suspension have it is simple in construction,
It is easy to arrangement, the plurality of advantages such as cost is low.Therefore, how the early stage developed in vehicle framework, which establishes rational McPherson, hangs
Frame hard spot layout strategy, to be allowed to the heat that the target sample car after matching with maximizing degree is kinetic equation teacher's common concern
One of point problem.
The content of the invention
It is an object of the invention to provide a kind of collocation method of McPherson front suspension hard spot.
To realize object defined above, according to an aspect of the present invention, there is provided a kind of configuration side of McPherson front suspension hard spot
Method, it includes：S100, the hard spot assembly of existing McPherson front suspension entity is analyzed, obtain its hard spot coordinate；S200, based on more
Body dynamics are theoretical, and the Dynamics Simulation model of McPherson front suspension is established with reference to the hard spot coordinate of acquisition；S300, obtain
Take and compare characterisitic parameter of the Dynamics Simulation model with existing McPherson front suspension entity under given experiment condition, adjust
Whole Dynamics Simulation model makes simulation result and measured result have preset matching degree；S400, establish McPherson front suspension
Associative simulation model, using hard spot coordinate as design variable, K characteristics and/or C characteristics to McPherson front suspension and/or turn
Experimental design is carried out to characteristic, obtains the change of each hard spot coordinate to K characteristics and/or C characteristics and/or steering characteristic desired value
Influence degree；S500, aforementioned affect degree is analyzed, obtain hard spot changes in coordinates to K characteristics and/or C characteristics and/or steering characteristic
The sensitivity matrix of desired value；McPherson front suspension hard spot is configured based on the sensitivity matrix.
Alternatively, S200 establishes the Dynamics Simulation model of McPherson front suspension also including the use of ADAMS softwares.
Alternatively, S300 also includes the preset matching that adjustment Dynamics Simulation model makes simulation result and measured result
Error is spent within 5%.
Alternatively, S400 establishes the associative simulation mould of McPherson front suspension also including the use of ADAMS and ISIGHT softwares
Type.
Alternatively, the hard spot coordinate includes：Core wheel point, control arm bulb point, control arm and subframe preceding tie point,
The rear tie points of control arm and subframe, the interior end points of track rod, the outer end point of track rod, damper upper extreme point,
One or more X, Y, Z coordinate in the lower extreme point of damper lower extreme point, the upper extreme point of stabilizer link and stabilizer link.
Alternatively, give that experiment condition including wheel beats experiment condition in the same direction and/or wheel is reversely beated experiment condition.
Alternatively, the experiment condition of bounce in the same direction is determined based on the impulse stroke of damper；And/or the wheel is anti-
To bounce experiment condition need to beat to position that ground level angle is 5 °.
Alternatively, K characteristics include：Toe-in angle with core wheel beat rate of change and/or camber angle with core wheel beat rate of change and/
Or roll steer coefficient and/or inclination camber angle.
Alternatively, C characteristics include：Side force deflection steer angle and/or core wheel longitudinal force steer coefficient.
Alternatively, steering characteristic includes：Ackermann steering precision and/or maximum wheel corner.
According to the collocation method of the McPherson front suspension hard spot of the present invention, different hard spots can quickly and be accurately judged
The impact analysis to dynamics of vehicle performance is adjusted, the design to vehicle development McPherson early stage front overhang hard spot provides strategy, keeps away
The drawbacks of having exempted to ignore other performances in hard spot design process in order to improve a certain performance, therefore, can design in hard spot
In play good balanced action.It has easy to operate, the advantage such as reliable results, suitable for the early stage of McPherson suspension hard spot
Design and develop, improve research and development speed.
Brief description of the drawings
The step of Fig. 1 is the McPherson front suspension hard spot collocation method of one embodiment of the present of invention is schemed.
Fig. 2 is the hard spot position view of the McPherson front suspension of one embodiment of the present of invention.
Embodiment
The preferred embodiment of the invention is will now be described with reference to the drawings, wherein identical label is identical for guiding all the time
Architectural feature.
Referring to Fig. 1, a kind of collocation method of McPherson front suspension hard spot is provided herein, it includes：S100, analyze existing wheat
The hard spot assembly of not inferior front suspension entity, obtains its hard spot coordinate；S200, based on Multi-body Dynamics Theory, with reference to the hard of acquisition
Point coordinates establishes the Dynamics Simulation model of McPherson front suspension；S300, obtain and compare Dynamics Simulation mould
Characterisitic parameter of the type with existing McPherson front suspension entity under given experiment condition, adjustment Dynamics Simulation model make to imitate
True result has preset matching degree with measured result；S400, the associative simulation model of McPherson front suspension is established, with hard spot coordinate
As design variable, K characteristics and/or C characteristics and/or steering characteristic to McPherson front suspension carry out experimental design, obtain each
The change of hard spot coordinate is to K characteristics and/or the influence degree of C characteristics and/or steering characteristic desired value；S500, analyze foregoing shadow
The degree of sound, hard spot changes in coordinates is obtained to K characteristics and/or the sensitivity matrix of C characteristics and/or steering characteristic desired value；It is based on
The sensitivity matrix configures McPherson front suspension hard spot.By aforementioned arrangements method, can quickly and accurately judge not
With impact analysis of the adjustment to dynamics of vehicle performance of hard spot, acquired sensitivity matrix can design in McPherson suspension
Effectively instruct the adjustment direction and strategy of hard spot early stage, avoid and neglected in hard spot design process in order to improve a certain performance
The drawbacks of depending on other performances, designed early stage for vehicle development and meet that the McPherson suspension hard spot of different dynamic characteristic provides ginseng
Examine, realize optimizing and revising for McPherson suspension hard spot design early stage.
More specifically retrofited in addition, may be present for wherein some steps.
For example, S200 establishes the Dynamics Simulation model of McPherson front suspension also including the use of ADAMS softwares.Its
In, ADAMS softwares have been the very ripe application software in simulation model field, according to teachings of the present invention, people in the art
Member will clearly know how to establish the Dynamics Simulation model of McPherson front suspension using the software.
Alternatively, S300 also includes the preset matching that adjustment Dynamics Simulation model makes simulation result and measured result
Error is spent within 5%.So preferably simulated effect is reached, and has been fully able to obtain required emulation experiment data.
Alternatively, S400 establishes the associative simulation mould of McPherson front suspension also including the use of ADAMS and ISIGHT softwares
Type.Similar described previously, ISIGHT softwares are similarly the very ripe application software in simulation model field, according to the religion of the present invention
Show, those skilled in the art will clearly know how to combine two software to establish the associative simulation mould of McPherson front suspension
Type.
Furthermore for each parameter being related in method, example is also provided respectively herein to refer to.
For example, hard spot coordinate includes representing vehicle or so, front and rear and height three-dimensional system of coordinate.Specifically, such as Fig. 2 institutes
Showing, the hard spot coordinate of McPherson front suspension is the link position of each parts, including：Damper upper extreme point 1, damper lower extreme point
2nd, the rear tie points 6 of track rod the outer end point 3, core wheel point 4, control panel bulb point 5, control arm and subframe, control arm with
Preceding tie point 7, track rod the outer end point 8, the upper extreme point 9 of stabilizer link and the lower extreme point of stabilizer link of subframe
10。
For another example, give that experiment condition including wheel beats experiment condition in the same direction and/or wheel is reversely beated experiment condition.More
Specifically, bounce experiment condition is determined based on the impulse stroke of damper in the same direction；And/or wheel is reversely beated experiment condition
Need to beat to position that ground level angle is 5 °.
And for example, K characteristics include：Toe-in angle with core wheel beat rate of change and/or camber angle with core wheel beat rate of change and/or
Roll steer coefficient and/or inclination camber angle.C characteristics include：Side force deflection steer angle and/or core wheel longitudinal force steering system
Number.And steering characteristic includes：Ackermann steering precision and/or maximum wheel corner.
Example above primarily illustrates the collocation method of the McPherson front suspension hard spot of the present invention.Although only to some of them
Embodiments of the present invention are described, but those of ordinary skill in the art it is to be appreciated that the present invention can without departing from
Implemented in its spirit and scope in the form of many other.Therefore, the example shown is considered as schematical with embodiment
And it is nonrestrictive, in the case where not departing from the spirit and scope of the present invention as defined in appended claims, this hair
It is bright to cover various modification and replacement.
Claims (10)
- A kind of 1. collocation method of McPherson front suspension hard spot, it is characterised in that including：S100, the hard spot assembly of existing McPherson front suspension entity is analyzed, obtain its hard spot coordinate；S200, based on Multi-body Dynamics Theory, the many-body dynamics of McPherson front suspension is established with reference to the hard spot coordinate of acquisition Simulation model；S300, obtain and compare Dynamics Simulation model and existing McPherson front suspension entity under given experiment condition Characterisitic parameter, the Dynamics Simulation model is adjusted to make simulation result and measured result that there is preset matching degree；S400, the associative simulation model of McPherson front suspension is established, using hard spot coordinate as design variable, to McPherson front suspension K characteristics and/or C characteristics and/or steering characteristic carry out experimental design, obtain the change of each hard spot coordinate to the K characteristics and/ Or the influence degree of the C characteristics and/or the steering characteristic desired value；AndS500, aforementioned affect degree is analyzed, obtain hard spot changes in coordinates to the K characteristics and/or the C characteristics and/or described The sensitivity matrix of steering characteristic desired value；McPherson front suspension hard spot is configured based on the sensitivity matrix.
- 2. collocation method according to claim 1, it is characterised in that S200 establishes wheat also including the use of ADAMS softwares The Dynamics Simulation model of not inferior front suspension.
- 3. collocation method according to claim 1, it is characterised in that S300 also includes adjusting the Dynamics Simulation Model makes the preset matching degree error of simulation result and measured result within 5%.
- 4. collocation method according to claim 1, it is characterised in that S400 is also including the use of ADAMS and ISIGHT softwares To establish the associative simulation model of McPherson front suspension.
- 5. according to the collocation method described in Claims 1-4 any one, it is characterised in that the hard spot coordinate includes：Core wheel Point, control arm bulb point, control arm and the preceding tie point of subframe, the rear tie points of control arm and subframe, track rod Interior end points, the outer end point of track rod, damper upper extreme point, damper lower extreme point, the upper extreme point of stabilizer link and steady One or more X, Y, Z coordinate in the lower extreme point of fixed pole connecting rod.
- 6. according to the collocation method described in Claims 1-4 any one, it is characterised in that given experiment condition includes wheel Bounce experiment condition and/or wheel are reversely beated experiment condition in the same direction.
- 7. collocation method according to claim 6, it is characterised in that the experiment condition of bounce in the same direction is based on damper Impulse stroke determines；And/or the wheel reversely beat experiment condition need to beat to position that ground level angle is 5 °.
- 8. according to the collocation method described in Claims 1-4 any one, it is characterised in that the K characteristics include：Toe-in angle With core wheel bounce rate of change and/or roll steer coefficient and/or camber angle is rolled with core wheel bounce rate of change and/or camber angle.
- 9. according to the collocation method described in Claims 1-4 any one, it is characterised in that the C characteristics include：Side force Deflection steer angle and/or core wheel longitudinal force steer coefficient.
- 10. according to the collocation method described in Claims 1-4 any one, it is characterised in that the steering characteristic includes：Ah Ke Man turns to precision and/or maximum wheel corner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610718117.2A CN107784133A (en) | 2016-08-25 | 2016-08-25 | The collocation method of McPherson front suspension hard spot |
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|---|---|---|---|
| CN201610718117.2A CN107784133A (en) | 2016-08-25 | 2016-08-25 | The collocation method of McPherson front suspension hard spot |
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| CN201610718117.2A Pending CN107784133A (en) | 2016-08-25 | 2016-08-25 | The collocation method of McPherson front suspension hard spot |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108446528A (en) * | 2018-06-01 | 2018-08-24 | 上汽通用五菱汽车股份有限公司 | Front suspension optimum design method, device and computer readable storage medium |
| CN109684705A (en) * | 2018-12-18 | 2019-04-26 | 江铃控股有限公司 | Body structure optimization method and system |
| CN110362938A (en) * | 2019-07-19 | 2019-10-22 | 北京航天发射技术研究所 | A kind of suspension load calculation method based on ADAMS |
| CN111428313A (en) * | 2020-03-27 | 2020-07-17 | 重庆长安汽车股份有限公司 | High-precision friction force optimization method for shock absorber |
| CN113536447A (en) * | 2020-04-21 | 2021-10-22 | 北京新能源汽车股份有限公司 | Suspension position determining method, device and equipment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108446528A (en) * | 2018-06-01 | 2018-08-24 | 上汽通用五菱汽车股份有限公司 | Front suspension optimum design method, device and computer readable storage medium |
| CN109684705A (en) * | 2018-12-18 | 2019-04-26 | 江铃控股有限公司 | Body structure optimization method and system |
| CN110362938A (en) * | 2019-07-19 | 2019-10-22 | 北京航天发射技术研究所 | A kind of suspension load calculation method based on ADAMS |
| CN111428313A (en) * | 2020-03-27 | 2020-07-17 | 重庆长安汽车股份有限公司 | High-precision friction force optimization method for shock absorber |
| CN111428313B (en) * | 2020-03-27 | 2022-07-05 | 重庆长安汽车股份有限公司 | High-precision friction force optimization method for shock absorber |
| CN113536447A (en) * | 2020-04-21 | 2021-10-22 | 北京新能源汽车股份有限公司 | Suspension position determining method, device and equipment |
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