CN104691269A - Method and system for designing stabilizer bar of automotive suspension - Google Patents
Method and system for designing stabilizer bar of automotive suspension Download PDFInfo
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- CN104691269A CN104691269A CN201310649152.XA CN201310649152A CN104691269A CN 104691269 A CN104691269 A CN 104691269A CN 201310649152 A CN201310649152 A CN 201310649152A CN 104691269 A CN104691269 A CN 104691269A
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Abstract
The invention discloses a method for designing a stabilizer bar of an automotive suspension. The method comprises the steps of: (a) setting the installing position of the suspension stabilizer bar and the length and position data of a connecting rod according to predefined shapes and installing positions of all parts of the automotive suspension; (b) building a DMU model according to the set data to generate motion envelopes; (c) laminating the motion envelopes to obtain a maximum value, setting the shape of the suspension stabilizer bar, and obtaining a gap between the suspension stabilizer bar and the maximal motion envelope; (d) judging if any value of the obtained gap is greater than a predefined safety gap, if so, operating the step (e), if not, returning to the step (b) after resetting the installing position of the suspension stabilizer bar and the length and position data of the connecting rod; and (e) finishing the design. The invention further discloses a system for designing the stabilizer bar of the automotive suspension. The method and the system simplify the design steps of the suspension stabilizer bar, shorten the design period, and improve the shape design level of the suspension stabilizer bar.
Description
Technical field
The present invention relates to automobile technical field, particularly relate to a kind of method and system of design vehicle suspension stabilizer rod.
Background technology
Under normal circumstances, in order to reduce automotive suspension offset frequency to improve the ride comfort of running car, that the vertical stiffness of automotive suspension can be designed is lower, thus the roll angular rigidity of automobile is designed also lower, cause automobile to produce the stability that larger vehicle roll angle affects running car when turning driving.In order to solve the problem, on automobile fore suspension and rear suspension, have employed the design of suspension stabilizer rod at present, and adjusted the ratio of the roll angular rigidity of automobile fore suspension and rear suspension by suspension stabilizer rod, obtaining the cornering properties needed.
In suspension design process, it is generally first design con-trol arm, the parts such as bumper, then suspension stabilizer rod is arranged in the space stayed according to these parts, not only suspension stabilizer rod can make the shape of more complicated for this reason, and under suspension design state, need to check the motion of this stabilizer rod when arranging suspension stabilizer rod, interfere if moved between the arbitrary parts of automotive suspension and suspension stabilizer rod, just need to redesign suspension stabilizer rod shape, and try again correction of motion again, till moving normally between each parts of automotive suspension and suspension stabilizer rod.The shortcoming of this method of designing is: the shape of suspension stabilizer rod and position are difficult to determine, and design efforts would is large and the cycle is long.
Summary of the invention
The object of the embodiment of the present invention is the method and system providing a kind of design vehicle suspension stabilizer rod, and shape and the position that can solve suspension stabilizer rod in prior art are difficult to determine, and the problem that design efforts would is large and the cycle is long.
In order to solve the problems of the technologies described above, embodiments provide a kind of method of design vehicle suspension stabilizer rod, said method comprising the steps of:
A, according to the shape of each relevant elements of predefined automotive suspension and installation site, the installation site of suspension stabilizer rod and the length and location data of suspension stabilizer link are set;
B, according to the installation position data of described suspension stabilizer rod and length of connecting rod and position data, set up DMU model, and obtain the sports envelope of each relevant elements of described automotive suspension relative to described suspension stabilizer rod according to described DMU model;
C, the sports envelope superposition acquisition largest motion envelope that will generate, arrange the shape of described suspension stabilizer rod, and obtain the gap between described suspension stabilizer rod and described largest motion envelope according to the shape of described suspension stabilizer rod according to described largest motion envelope;
D, judge whether the arbitrary gap between described suspension stabilizer rod and described largest motion envelope is all greater than predefined safety gap, if so, then run next step e; If not, then step b is returned after resetting the installation site of suspension stabilizer rod and the length and location data of suspension stabilizer link;
The length and location of e, the shape obtaining described suspension stabilizer rod and installation site and described suspension stabilizer link.
Wherein, before step a, described method also comprises step: the shape of the pre-defined each relevant elements of automotive suspension and installation site and the safety gap between each relevant elements of described automotive suspension and suspension stabilizer rod.
Wherein, in described steps d, " judge whether the arbitrary gap between described suspension stabilizer rod and described largest motion envelope is all greater than predefined safety gap " to comprise:
Judge the safety gap be greater than between each relevant elements of predefined described automotive suspension and suspension stabilizer rod whether arbitrary gap between described suspension stabilizer rod to described largest motion envelope is all corresponding.
Wherein, each relevant elements of described automotive suspension comprises subframe, Control arm and bumper.
Wherein, " by the sports envelope superposition acquisition largest motion envelope generated, arrange the shape of described suspension stabilizer rod according to described largest motion envelope " in described step c to comprise:
The sports envelope superposition generated is obtained largest motion envelope, obtains the space can arranging described suspension stabilizer rod according to described largest motion envelope, the shape of described suspension stabilizer rod is set in described space.
The embodiment of the present invention additionally provides a kind of system of design vehicle suspension stabilizer rod, and described system comprises: setting unit, the first acquiring unit, second acquisition unit, judging unit and the 3rd acquiring unit; Wherein,
Described setting unit, for according to the shape of each relevant elements of predefined automotive suspension and installation site, arranges the installation site of suspension stabilizer rod and the length and location data of suspension stabilizer link;
Described first acquiring unit, for according to the installation position data of described stabilizer rod and length of connecting rod and position data, set up DMU model, and obtain the sports envelope of each relevant elements of described automotive suspension relative to described suspension stabilizer rod according to described DMU model;
Described second acquisition unit, sports envelope superposition for generating obtains largest motion envelope, the shape of described suspension stabilizer rod is set according to described largest motion envelope, and obtains the gap between described suspension stabilizer rod and described largest motion envelope according to the shape of described suspension stabilizer rod;
Described judging unit, for judging whether the arbitrary gap between described suspension stabilizer rod and described largest motion envelope is all greater than predefined safety gap;
Described 3rd acquiring unit, for the length and location of the shape and installation site and described suspension stabilizer link that obtain described suspension stabilizer rod.
Wherein, described system also comprises default unit;
Described default unit, for the shape of each relevant elements of pre-defined automotive suspension and installation site and the safety gap between each relevant elements of described automotive suspension and suspension stabilizer rod.
In embodiments of the present invention, the shape of the pre-defined each relevant elements of automotive suspension and installation site and the safety gap between each relevant elements of automotive suspension and suspension stabilizer rod, according to above-mentioned predefined condition, arrange the installation site of suspension stabilizer rod and the length and location of suspension stabilizer link.After layout completes, set up DMU(Digital Mock-Up, digital prototype) model, and drive DMU model, obtain the sports envelope of each relevant elements of automotive suspension relative to suspension stabilizer rod, obtained sports envelope is superimposed together and obtains largest motion envelope, and the arrangement space of suspension stabilizer rod is obtained according to this largest motion envelope, and in this space, design the shape of suspension stabilizer rod, whether the arbitrary gap (gap namely between suspension stabilizer rod and automotive suspension each relevant elements sports envelope) judging between this suspension stabilizer rod and largest motion envelope meets the safety gap between each relevant elements of predefined automotive suspension and suspension stabilizer rod, if do not met, then redesign the shape of this suspension stabilizer rod and the length and location of suspension stabilizer link, till meeting safety gap requirement.
Implement the embodiment of the present invention, the space of suspension stabilizer rod can be arranged under existence conditions due to automotive suspension can be obtained rapidly and accurately, and in space, determine shape and the position of suspension stabilizer rod, only need judge whether the gap between suspension stabilizer rod and each relevant elements sports envelope of automotive suspension meets the safety gap requirement preset, not needing takes exercises one by one between suspension stabilizer rod and each relevant elements of automotive suspension checks, because this simplify the design procedure of suspension stabilizer rod, shorten the design cycle, also improve the design level of suspension stabilizer rod shape simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, the accompanying drawing obtaining other according to these accompanying drawings still belongs to category of the present invention.
The diagram of circuit of the method for the design vehicle suspension stabilizer rod that Fig. 1 provides for the embodiment of the present invention;
The structural representation of the system of the design vehicle suspension stabilizer rod that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, in the embodiment of the present invention, propose a kind of method of design vehicle suspension stabilizer rod, said method comprising the steps of:
Step S101, according to the shape of each relevant elements of predefined automotive suspension and installation site, the installation site of suspension stabilizer rod and the length and location data of suspension stabilizer link are set;
Before step S101, also comprise the shape of each relevant elements of predefined automotive suspension and installation site and the safety gap between each relevant elements of automotive suspension and suspension stabilizer rod, i.e. suspension stabilizer rod and the non-interference minimum clearance of each relevant elements of automotive suspension.Wherein, each relevant elements of automotive suspension comprises the parts such as subframe, Control arm and bumper, and each relevant elements of automotive suspension may be not identical with the safety gap between suspension stabilizer rod according to actual needs.
Under automotive wheel is fixed on a certain state, the all parts of automotive suspension are all geo-stationary, define the shape, length, position coordinate etc. of these automotive suspension parts above-mentioned and the safety gap between each relevant elements of automotive suspension and suspension stabilizer rod, then assigning a work of suspension stabilizer rod is carried out, the installation site of setting suspension stabilizer rod and the length and location data of suspension stabilizer link.
Step S102, the installation site of suspension stabilizer rod and the length and location data of suspension stabilizer link are set according to described, set up DMU model, and obtain the sports envelope of each relevant elements of described automotive suspension relative to described suspension stabilizer rod according to described DMU model;
According to the installation site of suspension stabilizer rod set in step S101 and the length and location data of suspension stabilizer link, in design software, set up DMU model analyze, run DMU model, obtain the sports envelope of each relevant elements of automotive suspension relative to suspension stabilizer rod.Wherein, design software not only comprises CATIA(Computer Aided Tri-Dimensional Interactive Application, computer-aided three-dimensional interactive application) software, also comprise other can with the design software of the same or similar function of CATIA software simulating.
In embodiments of the present invention, CATIA design software can be used to set up DMU model, the record each position of each relevant elements of automotive suspension in motion process can obtain the sports envelope of this sprung parts, connecting element now in motion process is suspension stabilizer rod, and the connecting element of other common DMU model is vehicle body.
Step S103, the sports envelope superposition acquisition largest motion envelope that will generate, the shape of described suspension stabilizer rod is set according to described largest motion envelope, and obtains the gap between described suspension stabilizer rod and described largest motion envelope according to the shape of described suspension stabilizer rod;
The sports envelope of generation is superimposed and obtains largest motion envelope, analysis largest motion envelope is carried out by DMU model, and obtain the space can arranging suspension stabilizer rod, designer can arrange the shape of suspension stabilizer rod in this space, after the profile design of suspension stabilizer rod completes, each gap between suspension stabilizer rod and largest motion envelope measured by measuring tool in use design software, the gap namely between each relevant elements of automotive suspension and suspension stabilizer rod.
Step S104, judge whether the arbitrary gap between described suspension stabilizer rod and described largest motion envelope is all greater than predefined safety gap, if so, then run next step S105, if not, then return step S102 after running next step S106.
In this step, if because safety gap predefined between each parts from suspension stabilizer rod is different, then need to judge the safety gap be greater than between each relevant elements of predefined described automotive suspension and suspension stabilizer rod whether arbitrary gap between described suspension stabilizer rod to described largest motion envelope is all corresponding.
The length and location of step S105, the shape obtaining described suspension stabilizer rod and installation site and described suspension stabilizer link.
The length and location data of step S106, the installation site resetting suspension stabilizer rod and suspension stabilizer link.
In embodiments of the present invention, judge whether the arbitrary gap between suspension stabilizer rod and largest motion envelope all meets the safety gap requirement preset, wherein need to investigate one to one the gap between suspension stabilizer rod and each relevant elements sports envelope of automotive suspension, if wherein have a gap to be less than the safety gap preset just need operating procedure S106: to turn back to step S102 after resetting the installation site of suspension stabilizer rod and the length and location data of suspension stabilizer link, arrange suspension stabilizer rod again, the shape that suspension stabilizer rod is set again and the gap reexamined between suspension stabilizer rod and each relevant elements sports envelope of automotive suspension, until arbitrary gap of all acquisitions is greater than the safety gap between each relevant elements of predefined automotive suspension and suspension stabilizer rod all accordingly, namely the requirement of suspension stabilizer rod and all non-interference minimum clearance of each relevant elements of automotive suspension is met, therefore the cycle is shorter and can the shape of fast speed determination suspension stabilizer rod and position.And the connecting element of other common DMU model is vehicle body, therefore judge each relevant elements sports envelope of suspension stabilizer rod and automotive suspension superpose the largest motion envelope that obtains between gap time, needing takes exercises one by one between suspension stabilizer rod and each relevant elements of automotive suspension checks, and work capacity is large and the cycle long and the shape of suspension stabilizer rod and position are difficult to determine.
In embodiments of the present invention, the shape of the pre-defined each relevant elements of automotive suspension and installation site and the safety gap between each relevant elements of automotive suspension and suspension stabilizer rod, according to above-mentioned predefined condition, arrange the installation site of suspension stabilizer rod and the length and location of suspension stabilizer link.After layout completes, set up DMU(Digital Mock-Up, digital prototype) model, and drive DMU model, obtain the sports envelope of each relevant elements of automotive suspension relative to suspension stabilizer rod, obtained sports envelope is superimposed together and obtains largest motion envelope, and the arrangement space of suspension stabilizer rod is obtained according to this largest motion envelope, and in this space, design the shape of suspension stabilizer rod, whether the arbitrary gap (gap namely between this suspension stabilizer rod and automotive suspension each relevant elements sports envelope) judging between this suspension stabilizer rod and largest motion envelope all meets the safety gap between each relevant elements of predefined automotive suspension and suspension stabilizer rod, if do not met, then redesign the shape of this suspension stabilizer rod and the length and location of suspension stabilizer link, till meeting safety gap requirement.
Implement the embodiment of the present invention, the space of suspension stabilizer rod can be arranged under existence conditions due to automotive suspension can be obtained rapidly and accurately, and in space, determine shape and the position of suspension stabilizer rod, only need judge whether the gap between suspension stabilizer rod and each relevant elements sports envelope of automotive suspension meets the safety gap requirement preset, not needing takes exercises one by one between suspension stabilizer rod and each relevant elements of automotive suspension checks, because this simplify the design procedure of suspension stabilizer rod, shorten the design cycle, also improve the design level of suspension stabilizer rod shape simultaneously.
As described in Figure 2, in the embodiment of the present invention, also propose a kind of system of design vehicle suspension stabilizer rod, this system comprises: setting unit 220, first acquiring unit 230, second acquisition unit 240, judging unit 250 and the 3rd acquiring unit 260; Wherein,
Described setting unit 220, for according to the shape of each relevant elements of predefined automotive suspension and installation site, arranges the installation site of suspension stabilizer rod and the length and location data of suspension stabilizer link;
Described first acquiring unit 230, for according to the installation position data of described suspension stabilizer rod and length of connecting rod and position data, set up DMU model, and obtain the sports envelope of each relevant elements of described automotive suspension relative to described suspension stabilizer rod according to described DMU model;
Described second acquisition unit 240, sports envelope superposition for generating obtains largest motion envelope, the shape of described suspension stabilizer rod is set according to described largest motion envelope, and obtains the gap between described suspension stabilizer rod and described largest motion envelope according to the shape of described suspension stabilizer rod;
Described judging unit 250, for judging whether the arbitrary gap between described suspension stabilizer rod and described largest motion envelope is all greater than predefined safety gap;
Described 3rd acquiring unit 260, for the length and location of the shape and installation site and described suspension stabilizer link that obtain described suspension stabilizer rod.
This system also comprises: preset unit 210, for the shape of each relevant elements of pre-defined automotive suspension and installation site and the safety gap between each relevant elements of described automotive suspension and suspension stabilizer rod.
In embodiments of the present invention, the system of design vehicle suspension stabilizer rod is the shape of each relevant elements of predefined automotive suspension and installation site and the safety gap between each relevant elements of automotive suspension and suspension stabilizer rod in default unit 210 first, according to shape and the installation site of each relevant elements of predefined automotive suspension, the installation site of suspension stabilizer rod and the length and location data of suspension stabilizer link are set in setting unit 220, secondly, according to above-mentioned set data, set up system DMU model, and in the first acquiring unit 230, obtain the sports envelope of each relevant elements of automotive suspension relative to suspension stabilizer rod according to DMU model, then, the sports envelope of above-mentioned generation is superimposed and obtains largest motion envelope, the shape of suspension stabilizer rod is set according to above-mentioned largest motion envelope, and in second acquisition unit 240, obtains the gap between suspension stabilizer rod and largest motion envelope according to the shape of suspension stabilizer rod, then, judge whether the arbitrary gap between suspension stabilizer rod and largest motion envelope is all greater than predefined safety gap according to judging unit 250, if, the shape of suspension stabilizer rod and the length and location of installation site and suspension stabilizer link is obtained in the 3rd acquiring unit 260, if not, the first acquiring unit 230 is returned after then resetting the installation site of suspension stabilizer rod and the length and location data of suspension stabilizer link, require until the gap between suspension stabilizer rod and automotive suspension each relevant elements sports envelope all meets predefined safety gap.
It should be noted that in said system embodiment, each included system element is carry out dividing according to function logic, but is not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional unit, also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
One of ordinary skill in the art will appreciate that all or part of step realized in above-described embodiment method is that the hardware that can carry out instruction relevant by program has come, described program can be stored in a computer read/write memory medium, described storage medium, as ROM/RAM, disk, CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a method for design vehicle suspension stabilizer rod, is characterized in that, described method comprises:
A, according to the shape of each relevant elements of predefined automotive suspension and installation site, the installation site of suspension stabilizer rod and the length and location data of suspension stabilizer link are set;
B, according to the installation position data of described suspension stabilizer rod and length of connecting rod and position data, set up DMU model, and obtain the sports envelope of each relevant elements of described automotive suspension relative to described suspension stabilizer rod according to described DMU model;
C, the sports envelope superposition acquisition largest motion envelope that will generate, arrange the shape of described suspension stabilizer rod, and obtain the gap between described suspension stabilizer rod and described largest motion envelope according to the shape of described suspension stabilizer rod according to described largest motion envelope;
D, judge whether the arbitrary gap between described suspension stabilizer rod and described largest motion envelope is all greater than predefined safety gap, if so, then run next step e; If not, then step b is returned after resetting the installation site of suspension stabilizer rod and the length and location data of suspension stabilizer link;
The length and location of e, the shape obtaining described suspension stabilizer rod and installation site and described suspension stabilizer link.
2. the method for claim 1, it is characterized in that, before step a, described method also comprises step: the shape of the pre-defined each relevant elements of automotive suspension and installation site and the safety gap between each relevant elements of described automotive suspension and suspension stabilizer rod.
3. method as claimed in claim 2, is characterized in that, " judge whether the arbitrary gap between described suspension stabilizer rod and described largest motion envelope is all greater than predefined safety gap " and comprise in described steps d:
Judge the safety gap be greater than between each relevant elements of predefined described automotive suspension and suspension stabilizer rod whether arbitrary gap between described suspension stabilizer rod to described largest motion envelope is all corresponding.
4. method as claimed in claim 2, it is characterized in that, each relevant elements of described automotive suspension comprises subframe, Control arm and bumper.
5. the method according to any one of Claims 1-4, is characterized in that, " the sports envelope superposition generated is obtained largest motion envelope, arranges the shape of described suspension stabilizer rod according to described largest motion envelope " to comprise in described step c:
The sports envelope superposition generated is obtained largest motion envelope, obtains the space can arranging described suspension stabilizer rod according to described largest motion envelope, the shape of described suspension stabilizer rod is set in described space.
6. a system for design vehicle suspension stabilizer rod, is characterized in that, described system comprises: setting unit, the first acquiring unit, second acquisition unit, judging unit and the 3rd acquiring unit; Wherein,
Described setting unit, for according to the shape of each relevant elements of predefined automotive suspension and installation site, arranges the installation site of suspension stabilizer rod and the length and location data of suspension stabilizer link;
Described first acquiring unit, for according to the installation position data of described suspension stabilizer rod and length of connecting rod and position data, set up DMU model, and obtain the sports envelope of each relevant elements of described automotive suspension relative to described suspension stabilizer rod according to described DMU model;
Described second acquisition unit, sports envelope superposition for generating obtains largest motion envelope, the shape of described suspension stabilizer rod is set according to described largest motion envelope, and obtains the gap between described suspension stabilizer rod and described largest motion envelope according to the shape of described suspension stabilizer rod;
Described judging unit, for judging whether the arbitrary gap between described suspension stabilizer rod and described largest motion envelope is all greater than predefined safety gap;
Described 3rd acquiring unit, for the length and location of the shape and installation site and described suspension stabilizer link that obtain described suspension stabilizer rod.
7. system as claimed in claim 6, it is characterized in that, described system also comprises default unit;
Described default unit, for the shape of each relevant elements of pre-defined automotive suspension and installation site and the safety gap between each relevant elements of described automotive suspension and suspension stabilizer rod.
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