CN104691269B - 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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- 239000000725 suspension Substances 0.000 title claims abstract description 267
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Abstract
本发明实施例公开了一种设计汽车悬架稳定杆的方法，该方法包括：a、根据预先定义的汽车悬架各零部件的形状和安装位置，设置悬架稳定杆的安装位置以及连杆的长度和位置数据；b、根据所设置的数据，建立DMU模型，生成运动包络；c、叠加运动包络获得最大，并设置悬架稳定杆的形状且获得悬架稳定杆与最大运动包络之间的间隙；d、判断上述获得间隙的任一值是否都大于预定义的安全间隙，如果是，则运行步骤e，如果否，则重设悬架稳定杆的安装位置以及连杆的长度和位置数据后返回步骤b；e、完成设计。本发明实施例还公开了一种设计汽车悬架稳定杆的系统。本发明实施例，简化了悬架稳定杆的设计步骤，缩短了设计周期，也提高了悬架稳定杆形状的设计水平。
The embodiment of the present invention discloses a method for designing a stabilizer bar of an automobile suspension. b. According to the set data, establish a DMU model and generate a motion envelope; c. Superimpose the motion envelope to obtain the maximum, and set the shape of the suspension stabilizer bar and obtain the suspension stabilizer bar and the maximum motion envelope d. Judging whether any value of the above obtained clearance is greater than the predefined safety clearance, if yes, then run step e, if not, then reset the installation position of the suspension stabilizer bar and the position of the connecting rod Return to step b after the length and position data; e, complete the design. The embodiment of the invention also discloses a system for designing an automobile suspension stabilizer bar. The embodiment of the present invention simplifies the design steps of the suspension stabilizer bar, shortens the design period, and improves the design level of the shape of the suspension stabilizer bar.
Description
技术领域technical field
本发明涉及汽车技术领域，尤其涉及一种设计汽车悬架稳定杆的方法和系统。The invention relates to the technical field of automobiles, in particular to a method and system for designing an automobile suspension stabilizer bar.
背景技术Background technique
通常情况下，为了降低汽车悬架偏频来改善汽车行驶的平顺性，会将汽车悬架的垂直刚度设计的比较低，从而使得汽车的侧倾角刚度设计的也比较低，导致汽车在转弯行驶时产生较大的车身侧倾角影响汽车行驶的稳定性。为了解决上述问题，目前在汽车前后悬架上采用了悬架稳定杆设计，并通过悬架稳定杆来调整汽车前后悬架的侧倾角刚度之比，获得需要的转向特性。Usually, in order to reduce the bias frequency of the car suspension to improve the ride comfort of the car, the vertical stiffness of the car suspension is designed to be relatively low, so that the roll angle stiffness of the car is also designed to be relatively low, causing the car to turn When a large body roll angle is generated, the stability of the car will be affected. In order to solve the above problems, the suspension stabilizer bar design is currently used on the front and rear suspensions of the car, and the ratio of the roll angle stiffness of the front and rear suspensions of the car is adjusted through the suspension stabilizer bar to obtain the required steering characteristics.
在悬架设计过程中，一般是先设计控制臂、减震器等部件，然后根据这些部件留下的空间布置悬架稳定杆，为此不仅仅悬架稳定杆会做成比较复杂的形状，而且在悬架设计状态下，布置悬架稳定杆时需要对该稳定杆的运动进行校核，如果汽车悬架任一零部件与悬架稳定杆之间运动发生干涉，就需要重新设计悬架稳定杆形状，并且重新再做一次运动校核，直至汽车悬架各个零部件与悬架稳定杆之间运动正常为止。这种设计方法的缺点在于：悬架稳定杆的形状和位置难以确定，并且设计工作量大以及周期长。In the suspension design process, the control arm, shock absorber and other components are generally designed first, and then the suspension stabilizer bar is arranged according to the space left by these components. For this reason, not only the suspension stabilizer bar will be made into a more complicated shape, Moreover, in the state of suspension design, the movement of the stabilizer bar needs to be checked when arranging the suspension stabilizer bar. If any part of the car suspension interferes with the movement of the suspension stabilizer bar, the suspension needs to be redesigned. Stabilize the shape of the bar, and do a motion check again until the movement between the various parts of the car suspension and the suspension stabilizer bar is normal. The disadvantage of this design method is that it is difficult to determine the shape and position of the suspension stabilizer bar, and the design workload is large and the cycle is long.
发明内容Contents of the invention
本发明实施例的目的在于提供一种设计汽车悬架稳定杆的方法及系统，可以解决现有技术中悬架稳定杆的形状和位置难以确定，并且设计工作量大以及周期长的问题。The purpose of the embodiments of the present invention is to provide a method and system for designing an automobile suspension stabilizer bar, which can solve the problems in the prior art that the shape and position of the suspension stabilizer bar are difficult to determine, and the design workload is large and the cycle is long.
为了解决上述技术问题，本发明实施例提供了一种设计汽车悬架稳定杆的方法，所述方法包括以下步骤：In order to solve the above-mentioned technical problems, an embodiment of the present invention provides a method for designing an automobile suspension stabilizer bar, the method comprising the following steps:
a、根据预先定义的汽车悬架各有关零部件的形状和安装位置，设置悬架稳定杆的安装位置以及悬架稳定杆连杆的长度和位置数据；a. Set the installation position of the suspension stabilizer bar and the length and position data of the suspension stabilizer bar link according to the pre-defined shape and installation position of the relevant components of the automobile suspension;
b、根据所述悬架稳定杆的安装位置数据以及连杆长度和位置数据，建立DMU模型，并根据所述DMU模型获得所述汽车悬架各有关零部件相对于所述悬架稳定杆的运动包络；b. According to the installation position data of the suspension stabilizer bar and the length and position data of the connecting rod, a DMU model is established, and according to the DMU model, the relative parts of the automobile suspension relative to the suspension stabilizer bar are obtained motion envelope;
c、将生成的运动包络叠加获得最大运动包络，根据所述最大运动包络设置所述悬架稳定杆的形状，并根据所述悬架稳定杆的形状获得所述悬架稳定杆与所述最大运动包络之间的间隙；c. Superimpose the generated motion envelopes to obtain a maximum motion envelope, set the shape of the suspension stabilizer bar according to the maximum motion envelope, and obtain the suspension stabilizer bar and the suspension stabilizer bar according to the shape of the suspension stabilizer bar the gap between said maximum motion envelopes;
d、判断所述悬架稳定杆与所述最大运动包络之间的任一间隙是否都大于预定义的安全间隙，如果是，则运行下一步骤e；如果否，则重新设置悬架稳定杆的安装位置以及悬架稳定杆连杆的长度和位置数据后返回步骤b；d. Judging whether any gap between the suspension stabilizer bar and the maximum motion envelope is greater than a predefined safety gap, if yes, then run the next step e; if not, reset the suspension stability Return to step b after the installation position of the rod and the length and position data of the suspension stabilizer rod link;
e、获得所述悬架稳定杆的形状和安装位置以及所述悬架稳定杆连杆的长度和位置；e. Obtaining the shape and installation position of the suspension stabilizer bar and the length and position of the suspension stabilizer bar connecting rod;
其中，所述步骤c中“将生成的运动包络叠加获得最大运动包络，根据所述最大运动包络设置所述悬架稳定杆的形状”包括：Wherein, in the step c, "superimposing the generated motion envelopes to obtain the maximum motion envelope, and setting the shape of the suspension stabilizer bar according to the maximum motion envelope" includes:
将生成的运动包络叠加获得最大运动包络，根据所述最大运动包络获得可布置所述悬架稳定杆的空间，在所述空间内设置所述悬架稳定杆的形状。A maximum motion envelope is obtained by superimposing the generated motion envelopes, a space where the suspension stabilizer bar can be arranged is obtained according to the maximum motion envelope, and a shape of the suspension stabilizer bar is set in the space.
其中，在步骤a之前，所述方法还包括步骤：预先定义汽车悬架各有关零部件的形状和安装位置以及所述汽车悬架各有关零部件与悬架稳定杆之间的安全间隙。Wherein, before step a, the method further includes the step of: predefining the shape and installation position of each relevant component of the automobile suspension and the safety gap between each relevant component of the automobile suspension and the suspension stabilizer bar.
其中，在所述步骤d中“判断所述悬架稳定杆与所述最大运动包络之间的任一间隙是否都大于预定义的安全间隙”包括：Wherein, in the step d, "judging whether any gap between the suspension stabilizer bar and the maximum motion envelope is greater than a predefined safety gap" includes:
判断所述悬架稳定杆与所述最大运动包络之间的任一间隙是否都相应的大于预定义的所述汽车悬架各有关零部件与悬架稳定杆之间的安全间隙。It is judged whether any gap between the suspension stabilizer bar and the maximum motion envelope is correspondingly larger than a predefined safety gap between each relevant component of the automobile suspension and the suspension stabilizer bar.
其中，所述汽车悬架各有关零部件包括副车架、控制臂和减震器。Wherein, the related components of the automobile suspension include subframe, control arm and shock absorber.
本发明实施例还提供了一种设计汽车悬架稳定杆的系统，所述系统包括：设置单元、第一获取单元、第二获取单元、判断单元和第三获取单元；其中，An embodiment of the present invention also provides a system for designing an automobile suspension stabilizer bar. The system includes: a setting unit, a first acquisition unit, a second acquisition unit, a judgment unit, and a third acquisition unit; wherein,
所述设置单元，用于根据预先定义的汽车悬架各有关零部件的形状和安装位置，设置悬架稳定杆的安装位置以及悬架稳定杆连杆的长度和位置数据；The setting unit is used to set the installation position of the suspension stabilizer bar and the length and position data of the suspension stabilizer bar link according to the pre-defined shape and installation position of the relevant components of the automobile suspension;
所述第一获取单元，用于根据所述稳定杆的安装位置数据以及连杆长度和位置数据，建立DMU模型，并根据所述DMU模型获得所述汽车悬架各有关零部件相对于所述悬架稳定杆的运动包络；The first acquisition unit is used to establish a DMU model according to the installation position data of the stabilizer bar and the length and position data of the connecting rod, and obtain the relative parts of the automobile suspension relative to the DMU model according to the DMU model. The motion envelope of the suspension stabilizer bar;
所述第二获取单元，用于将生成的运动包络叠加获得最大运动包络，根据所述最大运动包络设置所述悬架稳定杆的形状，并根据所述悬架稳定杆的形状获得所述悬架稳定杆与所述最大运动包络之间的间隙；The second acquiring unit is configured to superimpose the generated motion envelopes to obtain a maximum motion envelope, set the shape of the suspension stabilizer bar according to the maximum motion envelope, and obtain the suspension stabilizer bar according to the shape of the suspension stabilizer bar clearance between said suspension stabilizer bar and said maximum motion envelope;
所述判断单元，用于判断所述悬架稳定杆与所述最大运动包络之间的任一间隙是否都大于预定义的安全间隙；The judging unit is configured to judge whether any gap between the suspension stabilizer bar and the maximum motion envelope is greater than a predefined safety gap;
所述第三获取单元，用于获得所述悬架稳定杆的形状和安装位置以及所述悬架稳定杆连杆的长度和位置。The third acquiring unit is configured to acquire the shape and installation position of the suspension stabilizer bar and the length and position of the suspension stabilizer link.
其中，所述系统还包括预设单元；Wherein, the system also includes a preset unit;
所述预设单元，用于预先定义汽车悬架各有关零部件的形状和安装位置以及所述汽车悬架各有关零部件与悬架稳定杆之间的安全间隙。The preset unit is used to predefine the shapes and installation positions of the relevant parts of the automobile suspension and the safety gap between the relevant parts of the automobile suspension and the suspension stabilizer bar.
在本发明实施例中，预先定义汽车悬架各有关零部件的形状和安装位置以及汽车悬架各有关零部件与悬架稳定杆之间的安全间隙，根据上述预先定义的条件，布置悬架稳定杆的安装位置以及悬架稳定杆连杆的长度和位置。布置完成后，建立DMU(Digital Mock-Up，电子样机)模型，并驱动DMU模型，获得汽车悬架各有关零部件相对于悬架稳定杆的运动包络，将所获得的运动包络叠加到一起获得最大运动包络，并根据该最大运动包络获得悬架稳定杆的布置空间，并在该空间内设计悬架稳定杆的形状，判断该悬架稳定杆与最大运动包络之间的任一间隙(即悬架稳定杆与汽车悬架各有关零部件运动包络之间的间隙)是否满足预定义的汽车悬架各有关零部件与悬架稳定杆之间的安全间隙，如果不满足，则重新设计该悬架稳定杆的形状以及悬架稳定杆连杆的长度和位置，直至满足安全间隙要求为止。In the embodiment of the present invention, the shape and installation position of the relevant parts of the automobile suspension and the safety gap between the relevant parts of the automobile suspension and the suspension stabilizer are defined in advance, and the suspension is arranged according to the above-mentioned pre-defined conditions. Where the stabilizer bar is mounted and the length and location of the suspension stabilizer bar linkage. After the layout is completed, the DMU (Digital Mock-Up, electronic prototype) model is established, and the DMU model is driven to obtain the motion envelope of the relevant parts of the automobile suspension relative to the suspension stabilizer bar, and the obtained motion envelope is superimposed on the Obtain the maximum motion envelope together, and obtain the arrangement space of the suspension stabilizer bar according to the maximum motion envelope, and design the shape of the suspension stabilizer bar in this space, and judge the distance between the suspension stabilizer bar and the maximum motion envelope Whether any clearance (that is, the clearance between the suspension stabilizer bar and the motion envelope of the relevant parts of the vehicle suspension) meets the predefined safety clearance between the relevant parts of the vehicle suspension and the suspension stabilizer bar, if not If it is satisfied, redesign the shape of the suspension stabilizer bar and the length and position of the suspension stabilizer bar connecting rod until the safety clearance requirements are met.
实施本发明实施例，由于能够快速准确地求出汽车悬架在现有条件下可以布置悬架稳定杆的空间，并在空间内确定悬架稳定杆的形状和位置，只需判断悬架稳定杆与汽车悬架各有关零部件运动包络之间的间隙是否满足预先设定的安全间隙要求，不需要在悬架稳定杆与汽车悬架各有关零部件之间一一做运动校核，因此简化了悬架稳定杆的设计步骤，缩短了设计周期，同时也提高了悬架稳定杆形状的设计水平。Carry out the embodiment of the present invention, owing to can quickly and accurately obtain the space that automobile suspension can arrange suspension stabilizer bar under existing conditions, and determine the shape and the position of suspension stabilizer bar in the space, only need to judge that suspension is stable Whether the gap between the movement envelope of the rod and the relevant parts of the automobile suspension meets the preset safety clearance requirements, and there is no need to perform a motion check between the suspension stabilizer bar and the relevant parts of the automobile suspension. Therefore, the design steps of the suspension stabilizer bar are simplified, the design period is shortened, and the design level of the shape of the suspension stabilizer bar is also improved.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，根据这些附图获得其他的附图仍属于本发明的范畴。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, obtaining other drawings based on these drawings still belongs to the scope of the present invention without any creative effort.
图1为本发明实施例提供的设计汽车悬架稳定杆的方法的流程图；Fig. 1 is the flow chart of the method for the design automobile suspension stabilizer bar that the embodiment of the present invention provides;
图2为本发明实施例提供的设计汽车悬架稳定杆的系统的结构示意图。Fig. 2 is a schematic structural diagram of a system for designing a suspension stabilizer bar of an automobile provided by an embodiment of the present invention.
具体实施方式detailed description
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
如图1所示，本发明实施例中，提出一种设计汽车悬架稳定杆的方法，所述方法包括以下步骤：As shown in Figure 1, in the embodiment of the present invention, propose a kind of method for designing automobile suspension stabilizer bar, described method comprises the following steps:
步骤S101、根据预先定义的汽车悬架各有关零部件的形状和安装位置，设置悬架稳定杆的安装位置以及悬架稳定杆连杆的长度和位置数据；Step S101, according to the pre-defined shapes and installation positions of the relevant components of the automobile suspension, the installation position of the suspension stabilizer bar and the length and position data of the suspension stabilizer bar connecting rod are set;
在步骤S101之前，还包括预先定义的汽车悬架各有关零部件的形状和安装位置以及汽车悬架各有关零部件与悬架稳定杆之间的安全间隙，即悬架稳定杆与汽车悬架各有关零部件互不干涉的最小间隙。其中，汽车悬架各有关零部件包括副车架、控制臂和减震器等零部件，根据实际需要汽车悬架各有关零部件与悬架稳定杆之间的安全间隙可能都不相同。Before step S101, it also includes the shape and installation position of each relevant parts of the automobile suspension in advance and the safety clearance between each relevant parts of the automobile suspension and the suspension stabilizer bar, that is, the suspension stabilizer bar and the automobile suspension The minimum clearance for non-interference of various related parts. Among them, the relevant parts of the automobile suspension include subframes, control arms, shock absorbers and other parts. According to actual needs, the safety clearance between the relevant parts of the automobile suspension and the suspension stabilizer bar may be different.
将汽车车轮固定在某一种状态下，汽车悬架所有零部件都是相对静止的，定义好上述这些汽车悬架零部件的形状、长度、位置坐标等以及汽车悬架各有关零部件与悬架稳定杆之间的安全间隙，然后进行悬架稳定杆的布置工作，设定悬架稳定杆的安装位置以及悬架稳定杆连杆的长度和位置数据。Fix the car wheel in a certain state, all parts of the car suspension are relatively static, define the shape, length, position coordinates, etc. The safety gap between the suspension stabilizer bars, and then the arrangement of the suspension stabilizer bars, the installation position of the suspension stabilizer bars and the length and position data of the suspension stabilizer bar links.
步骤S102、根据所述设置悬架稳定杆的安装位置以及悬架稳定杆连杆的长度和位置数据，建立DMU模型，并根据所述DMU模型获得所述汽车悬架各有关零部件相对于所述悬架稳定杆的运动包络；Step S102. According to the installation position of the suspension stabilizer bar and the length and position data of the suspension stabilizer bar connecting rod, a DMU model is established, and according to the DMU model, the relative parts of the automobile suspension relative to the The motion envelope of the stabilizer bar of the suspension described above;
根据步骤S101中所设置的悬架稳定杆的安装位置以及悬架稳定杆连杆的长度和位置数据，在设计软件中建立DMU模型进行分析，运行DMU模型，获得汽车悬架各有关零部件相对于悬架稳定杆的运动包络。其中，设计软件不仅仅包括CATIA(Computer Aided Tri-Dimensional Interactive Application，计算机辅助三维交互式应用)软件，还包括其它可以与CATIA软件实现相同或相似功能的设计软件。According to the installation position of the suspension stabilizer bar set in step S101 and the length and position data of the suspension stabilizer bar connecting rod, a DMU model is established in the design software for analysis, and the DMU model is run to obtain the relative parts of the automobile suspension. Motion envelope for the suspension stabilizer bar. Among them, design software not only includes CATIA (Computer Aided Tri-Dimensional Interactive Application) software, but also other design software that can achieve the same or similar functions as CATIA software.
在本发明实施例中，可以使用CATIA设计软件建立DMU模型，记录汽车悬架各有关零部件在运动过程中的每个位置即可得到该悬架部件的运动包络，此时运动过程中的固定件为悬架稳定杆，而其它普通DMU模型的固定件为车身。In the embodiment of the present invention, CATIA design software can be used to set up the DMU model, and each position of each relevant component of the automobile suspension can be recorded to obtain the motion envelope of the suspension component during the motion process. The fixed part is the suspension stabilizer bar, while the fixed part of other common DMU models is the body.
步骤S103、将生成的运动包络叠加获得最大运动包络，根据所述最大运动包络设置所述悬架稳定杆的形状，并根据所述悬架稳定杆的形状获得所述悬架稳定杆与所述最大运动包络之间的间隙；Step S103, superimposing the generated motion envelopes to obtain a maximum motion envelope, setting the shape of the suspension stabilizer bar according to the maximum motion envelope, and obtaining the suspension stabilizer bar according to the shape of the suspension stabilizer bar Gap from said maximum motion envelope;
将生成的运动包络叠加在一起获得最大运动包络，通过DMU模型进行分析最大运动包络，并获得可布置悬架稳定杆的空间，设计人员可以在该空间内设置悬架稳定杆的形状，当悬架稳定杆的形状设计完成之后，使用设计软件中的测量工具测量出悬架稳定杆与最大运动包络之间的各个间隙，即汽车悬架各有关零部件与悬架稳定杆之间的间隙。Superimpose the generated motion envelopes to obtain the maximum motion envelope, analyze the maximum motion envelope through the DMU model, and obtain the space where the suspension stabilizer bar can be arranged, and the designer can set the shape of the suspension stabilizer bar in this space , after the shape design of the suspension stabilizer bar is completed, use the measuring tools in the design software to measure the gaps between the suspension stabilizer bar and the maximum motion envelope, that is, the distance between the relevant parts of the automobile suspension and the suspension stabilizer bar the gap between.
步骤S104、判断所述悬架稳定杆与所述最大运动包络之间的任一间隙是否都大于预定义的安全间隙，如果是，则运行下一步骤S105，如果否，则运行下一步骤S106后返回步骤S102。Step S104, judging whether any gap between the suspension stabilizer bar and the maximum motion envelope is greater than a predefined safety gap, if yes, proceed to the next step S105, if not, proceed to the next step Return to step S102 after S106.
在本步骤中，由于若各零部件与悬架稳定杆之间预定义的安全间隙不同，则需要判断所述悬架稳定杆与所述最大运动包络之间的任一间隙是否都相应的大于预定义的所述汽车悬架各有关零部件与悬架稳定杆之间的安全间隙。In this step, since the predefined safety gap between each component and the suspension stabilizer bar is different, it is necessary to judge whether any gap between the suspension stabilizer bar and the maximum motion envelope is corresponding It is greater than the predefined safety gap between each relevant component of the automobile suspension and the suspension stabilizer bar.
步骤S105、获得所述悬架稳定杆的形状和安装位置以及所述悬架稳定杆连杆的长度和位置。Step S105 , obtaining the shape and installation position of the suspension stabilizer bar and the length and position of the suspension stabilizer bar connecting rod.
步骤S106、重新设置悬架稳定杆的安装位置以及悬架稳定杆连杆的长度和位置数据。Step S106, resetting the installation position of the suspension stabilizer bar and the length and position data of the suspension stabilizer bar link.
在本发明实施例中，判断悬架稳定杆与最大运动包络之间的任一间隙是否都满足预先设定的安全间隙要求，其中需要对悬架稳定杆与汽车悬架各有关零部件运动包络之间的间隙一一对应的进行排查，如果其中有一个间隙小于预先设定的安全间隙就需要运行步骤S106：重新设置悬架稳定杆的安装位置以及悬架稳定杆连杆的长度和位置数据后返回到步骤S102，再布置悬架稳定杆、再设置悬架稳定杆的形状和再检查悬架稳定杆与汽车悬架各有关零部件运动包络之间的间隙，直到所有获得的任一间隙都相应的大于预定义的汽车悬架各有关零部件与悬架稳定杆之间的安全间隙，即满足悬架稳定杆与汽车悬架各有关零部件都互不干涉的最小间隙的要求，因此周期较短并且能够快速的确定悬架稳定杆的形状和位置。而其它普通DMU模型的固定件为车身，因此在判断悬架稳定杆与汽车悬架各有关零部件运动包络叠加获得的最大运动包络之间的间隙时，需要在悬架稳定杆与汽车悬架各有关零部件之间一一做运动校核，工作量大以及周期长并且悬架稳定杆的形状和位置难以确定。In the embodiment of the present invention, it is judged whether any gap between the suspension stabilizer bar and the maximum motion envelope satisfies the preset safety clearance requirement, wherein it is necessary to move the suspension stabilizer bar and the relevant components of the automobile suspension. Check the gaps between the envelopes one by one. If one of the gaps is smaller than the preset safety gap, you need to run step S106: reset the installation position of the suspension stabilizer bar and the length and length of the suspension stabilizer bar link. Return to step S102 after the position data, then arrange the suspension stabilizer bar, set the shape of the suspension stabilizer bar and check the gap between the suspension stabilizer bar and the motion envelope of each relevant component of the automobile suspension, until all obtained Any gap is correspondingly larger than the predefined safety gap between the relevant parts of the automobile suspension and the suspension stabilizer bar, that is, the minimum clearance that satisfies the minimum clearance between the suspension stabilizer bar and the relevant parts of the automobile suspension. requirements, so the cycle time is short and the shape and position of the suspension stabilizer bar can be quickly determined. The fixed part of other common DMU models is the body, so when judging the gap between the suspension stabilizer bar and the maximum motion envelope obtained by superimposing the motion envelopes of the relevant parts of the car suspension, it is necessary to determine the gap between the suspension stabilizer bar and the car It is difficult to determine the shape and position of the suspension stabilizer bar by doing motion checks one by one among the relevant parts of the suspension.
在本发明实施例中，预先定义汽车悬架各有关零部件的形状和安装位置以及汽车悬架各有关零部件与悬架稳定杆之间的安全间隙，根据上述预先定义的条件，布置悬架稳定杆的安装位置以及悬架稳定杆连杆的长度和位置。布置完成后，建立DMU(Digital Mock-Up，电子样机)模型，并驱动DMU模型，获得汽车悬架各有关零部件相对于悬架稳定杆的运动包络，将所获得的运动包络叠加到一起获得最大运动包络，并根据该最大运动包络获得悬架稳定杆的布置空间，并在该空间内设计悬架稳定杆的形状，判断该悬架稳定杆与最大运动包络之间的任一间隙(即该悬架稳定杆与汽车悬架各有关零部件运动包络之间的间隙)是否都满足预定义的汽车悬架各有关零部件与悬架稳定杆之间的安全间隙，如果不满足，则重新设计该悬架稳定杆的形状以及悬架稳定杆连杆的长度和位置，直至满足安全间隙要求为止。In the embodiment of the present invention, the shape and installation position of the relevant parts of the automobile suspension and the safety gap between the relevant parts of the automobile suspension and the suspension stabilizer are defined in advance, and the suspension is arranged according to the above-mentioned pre-defined conditions. Where the stabilizer bar is mounted and the length and location of the suspension stabilizer bar linkage. After the layout is completed, the DMU (Digital Mock-Up, electronic prototype) model is established, and the DMU model is driven to obtain the motion envelope of the relevant parts of the automobile suspension relative to the suspension stabilizer bar, and the obtained motion envelope is superimposed on the Obtain the maximum motion envelope together, and obtain the arrangement space of the suspension stabilizer bar according to the maximum motion envelope, and design the shape of the suspension stabilizer bar in this space, and judge the distance between the suspension stabilizer bar and the maximum motion envelope Whether any gap (that is, the gap between the suspension stabilizer bar and the motion envelope of the relevant parts of the vehicle suspension) satisfies the predefined safety gap between the relevant parts of the vehicle suspension and the suspension stabilizer bar, If it is not satisfied, redesign the shape of the suspension stabilizer bar and the length and position of the suspension stabilizer link until the safety clearance requirements are met.
实施本发明实施例，由于能够快速准确地求出汽车悬架在现有条件下可以布置悬架稳定杆的空间，并在空间内确定悬架稳定杆的形状和位置，只需判断悬架稳定杆与汽车悬架各有关零部件运动包络之间的间隙是否满足预先设定的安全间隙要求，不需要在悬架稳定杆与汽车悬架各有关零部件之间一一做运动校核，因此简化了悬架稳定杆的设计步骤，缩短了设计周期，同时也提高了悬架稳定杆形状的设计水平。Carry out the embodiment of the present invention, owing to can quickly and accurately obtain the space that automobile suspension can arrange suspension stabilizer bar under existing conditions, and determine the shape and the position of suspension stabilizer bar in the space, only need to judge that suspension is stable Whether the gap between the movement envelope of the rod and the relevant parts of the automobile suspension meets the preset safety clearance requirements, and there is no need to perform a motion check between the suspension stabilizer bar and the relevant parts of the automobile suspension. Therefore, the design steps of the suspension stabilizer bar are simplified, the design period is shortened, and the design level of the shape of the suspension stabilizer bar is also improved.
如图2所述，本发明实施例中，还提出一种设计汽车悬架稳定杆的系统，该系统包括：设置单元220、第一获取单元230、第二获取单元240、判断单元250和第三获取单元260；其中，As shown in FIG. 2 , in the embodiment of the present invention, a system for designing an automobile suspension stabilizer bar is also proposed, and the system includes: a setting unit 220 , a first acquisition unit 230 , a second acquisition unit 240 , a judgment unit 250 and a second acquisition unit 240 . Three acquiring unit 260; wherein,
所述设置单元220，用于根据预先定义的汽车悬架各有关零部件的形状和安装位置，设置悬架稳定杆的安装位置以及悬架稳定杆连杆的长度和位置数据；The setting unit 220 is used to set the installation position of the suspension stabilizer bar and the length and position data of the suspension stabilizer bar link according to the pre-defined shape and installation position of the relevant components of the automobile suspension;
所述第一获取单元230，用于根据所述悬架稳定杆的安装位置数据以及连杆长度和位置数据，建立DMU模型，并根据所述DMU模型获得所述汽车悬架各有关零部件相对于所述悬架稳定杆的运动包络；The first acquisition unit 230 is used to establish a DMU model according to the installation position data of the suspension stabilizer bar and the length and position data of the connecting rod, and obtain the relative values of the relevant components of the automobile suspension according to the DMU model. the motion envelope of said suspension stabilizer bar;
所述第二获取单元240，用于将生成的运动包络叠加获得最大运动包络，根据所述最大运动包络设置所述悬架稳定杆的形状，并根据所述悬架稳定杆的形状获得所述悬架稳定杆与所述最大运动包络之间的间隙；The second acquisition unit 240 is configured to superimpose the generated motion envelopes to obtain a maximum motion envelope, set the shape of the suspension stabilizer bar according to the maximum motion envelope, and set the shape of the suspension stabilizer bar according to the shape of the suspension stabilizer bar. obtaining the clearance between the stabilizer bar and the maximum motion envelope;
所述判断单元250，用于判断所述悬架稳定杆与所述最大运动包络之间的任一间隙是否都大于预定义的安全间隙；The judging unit 250 is configured to judge whether any gap between the suspension stabilizer bar and the maximum motion envelope is greater than a predefined safety gap;
所述第三获取单元260，用于获得所述悬架稳定杆的形状和安装位置以及所述悬架稳定杆连杆的长度和位置。The third acquiring unit 260 is configured to acquire the shape and installation position of the suspension stabilizer bar and the length and position of the suspension stabilizer bar connecting rod.
该系统还包括：预设单元210，用于预先定义汽车悬架各有关零部件的形状和安装位置以及所述汽车悬架各有关零部件与悬架稳定杆之间的安全间隙。The system also includes: a preset unit 210, which is used to predefine the shape and installation position of the relevant parts of the automobile suspension and the safety clearance between the relevant parts of the automobile suspension and the suspension stabilizer bar.
在本发明实施例中，设计汽车悬架稳定杆的系统首先在预设单元210中预先定义的汽车悬架各有关零部件的形状和安装位置以及汽车悬架各有关零部件与悬架稳定杆之间的安全间隙，根据预先定义的汽车悬架各有关零部件的形状和安装位置，在设置单元220中设置悬架稳定杆的安装位置以及悬架稳定杆连杆的长度和位置数据；其次，根据上述所设置的数据，建立统DMU模型，并根据DMU模型在第一获取单元230中获得汽车悬架各有关零部件相对于悬架稳定杆的运动包络；接着，将上述生成的运动包络叠加在一起获得最大运动包络，根据上述最大运动包络设置悬架稳定杆的形状，并根据悬架稳定杆的形状在第二获取单元240中获得悬架稳定杆与最大运动包络之间的间隙；然后，根据判断单元250判断悬架稳定杆与最大运动包络之间的任一间隙是否都大于预先定义的安全间隙，如果是，在第三获取单元260中获得悬架稳定杆的形状和安装位置以及悬架稳定杆连杆的长度和位置，如果否，则重新设置悬架稳定杆的安装位置以及悬架稳定杆连杆的长度和位置数据后返回第一获取单元230，直到悬架稳定杆与汽车悬架各有关零部件运动包络之间的间隙都满足预先定义的安全间隙要求为止。In the embodiment of the present invention, the system of designing the automobile suspension stabilizer bar first pre-defined in the preset unit 210 the shapes and installation positions of the relevant parts of the automobile suspension and the relevant parts of the automobile suspension and the suspension stabilizer bar. According to the shape and installation position of each relevant component of the automobile suspension defined in advance, the installation position of the suspension stabilizer bar and the length and position data of the suspension stabilizer bar connecting rod are set in the setting unit 220; , according to the data set above, establish a unified DMU model, and according to the DMU model in the first acquisition unit 230, obtain the motion envelope of each relevant component of the automobile suspension relative to the suspension stabilizer bar; then, the above-mentioned generated motion The envelopes are superimposed together to obtain the maximum motion envelope, the shape of the suspension stabilizer bar is set according to the above maximum motion envelope, and the suspension stabilizer bar and the maximum motion envelope are obtained in the second acquisition unit 240 according to the shape of the suspension stabilizer bar Then, according to the judging unit 250, it is judged whether any gap between the suspension stabilizer bar and the maximum motion envelope is greater than the predefined safety gap, and if so, the suspension stability is obtained in the third obtaining unit 260 The shape and installation position of the rod and the length and position of the suspension stabilizer link, if not, then reset the installation position of the suspension stabilizer and the length and position data of the suspension stabilizer link and return to the first acquisition unit 230 , until the clearance between the suspension stabilizer bar and the motion envelope of the relevant parts of the vehicle suspension meets the predefined safety clearance requirements.
值得注意的是，上述系统实施例中，所包括的各个系统单元只是按照功能逻辑进行划分的，但并不局限于上述的划分，只要能够实现相应的功能即可；另外，各功能单元的具体名称也只是为了便于相互区分，并不用于限制本发明的保护范围。It is worth noting that in the above system embodiments, the system units included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, the specific functions of each functional unit The names are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the present invention.
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，所述的程序可以存储于一计算机可读取存储介质中，所述的存储介质，如ROM/RAM、磁盘、光盘等。Those of ordinary skill in the art can understand that all or part of the steps in the method of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, and the storage Media such as ROM/RAM, magnetic disk, optical disk, etc.
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.
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