CN114297776B - VR (virtual reality) display automobile part assembling method - Google Patents
VR (virtual reality) display automobile part assembling method Download PDFInfo
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Abstract
The invention discloses a VR display automobile part assembling method, which comprises the following steps: s1, modeling of the whole automobile parts, S2, establishment of data communication connection, S3, data import of the automobile parts model, S4, wireless connection of an active VR display helmet and a driven VR display helmet, S5, and assembly flow display of the whole automobile parts.
Description
Technical Field
The invention discloses an assembly method of VR display automobile parts, and belongs to the technical field of VR display.
Background
Virtual Reality technology (VR) is a brand new practical technology developed in the 20 th century. The virtual reality technology comprises a computer, electronic information and simulation technology, and the basic implementation mode is that the computer simulates a virtual environment so as to bring the sense of environmental immersion. With the continuous development of social productivity and scientific technology, VR technology is increasingly required by various industries. VR technology has also made great progress and gradually become a new scientific and technological field;
However, in the existing automobile part assembly work, the automobile part assembly process is generally shown by a paper-grade installation process diagram and an electronic grade diagram, the content is relatively fixed, the turning is relatively complicated, and the use is inconvenient, so that the method for assembling the R-display automobile part is provided.
Disclosure of Invention
The invention aims to solve the defects and provide a VR display automobile part assembling method.
A VR-display automotive component assembly method, the method comprising the steps of:
s1, modeling of parts of a whole automobile;
a. Drawing a vertical view of a vehicle model needing VR display, and making related simplifying assumptions and definitions;
b. Defining a coordinate matrix of each coordinate point on the vertical plane of the automobile model;
c. performing kinematic analysis on the system based on the geometric relationship in the vertical plane of the automobile model by using a displacement matrix method;
d. Defining a stress matrix of each coordinate point;
e. Taking a certain instant in the motion process of the system, analyzing the stress conditions of each research object, and carrying out dynamics analysis;
f. Linearizing the model, namely linearizing the equation obtained in the steps S1 and e at the equilibrium position of the system, and ending the modeling;
s2, establishing data communication connection;
a. Establishing wireless communication connection between an active VR display helmet provided with a displacement sensor, a left-hand master control handle and a right-hand master control handle and a computer for drawing an automobile part model in the step S1 through a wireless transceiver module;
s3, importing automobile part model data of an automobile part model;
a. the method comprises the steps that (1) model information of automobile parts drawn by a computer with communication connection relation established in step (S2) is imported into an active VR display helmet through a wireless transceiver module;
s4, the driving VR display helmet is in wireless connection with a system of the driven VR display helmet;
a, preparing a plurality of driven VR display helmets and driven control handles;
b, enabling a plurality of driven VR display helmets and driven control handles to be connected into a system of the driving VR display helmets;
c, controlling the driven VR display helmet to perform operation display through the driving VR display helmet;
s5, displaying the assembly flow of the whole vehicle parts;
a. A user holding the active VR display helmet performs disassembly and assembly work on automobile parts through a master control handle;
b. holding the driven VR display helmet to perform passive real-time animation viewing on the automobile parts disassembled and assembled by the driving VR display helmet;
c. The driven VR display helmet is held to actively access the system, and after the system is successfully accessed, the integration effect of the automobile parts can be independently checked and decomposed through the driven control handle;
Preferably, in the step S1, a, the relevant assumption and definition includes: definition: AD is a part of an automobile, S point is a sprung mass centroid, T point is a tire centroid, r point is a contact point between a tire and the ground, A, M points are connection points between a suspension and an automobile body, B, C points are mounting points of a spring damper, r point is a tire grounding point, theta is an included angle between a rod AD and the horizontal direction, and an included angle between a control arm and the positive direction of a Y axis is positive in the anticlockwise direction; θ is the angle between the rod AD and the horizontal direction, the angle between the axis of the tire and the vertical direction, and the counterclockwise direction is positive; delta is the expansion and contraction amount of the spring damper, d is the transverse displacement of the contact point of the tire and the ground, alpha is the included angle between the rod MD and the vertical direction, gamma is the included angle between the rod AM and the rod AD, z is the sprung mass displacement, and z is the unsprung mass displacement.
Preferably, the directions are all positive upwards; is the component of the unsprung mass acceleration in the Y direction; is the component of the unsprung mass acceleration in the Z direction; z is the road surface input displacement, and the directions are positive upwards; the lever length am=l, ad=l, md=l, where L varies with the control arm pivot angle θ, and the extension/contraction amount δ=l-L of the spring damper is set to L when the lever length is at the equilibrium position.
Preferably, in the steps S1, b, let X, X be a coordinate matrix of each point, the subscript "0" represents an initial coordinate of the point, and let the coordinate expression of the J point be: j= (J, J), J and J represent coordinates of each point in Y and Z directions, and the J point is replaced with a coordinate point a, B, C, D, M, T in the automobile model elevation view, then:
X＝[B,C,T,D],X＝[A,D,M],X＝[B,C,D,M]
X＝[B,C,T,D],X＝[A,D,M],X＝[B,C,D,M]。
Preferably, in the steps S1 and f, the model linearization data information includes a sheet metal coordinate position and a chassis coordinate position set in the automobile data model, and appearance and geometric dimension data information of the hub, the automobile body and the chassis structure.
Preferably, the size and shape of the driving VR display helmet is slightly larger than that of the driven VR display helmet, so that rapid screening is facilitated.
Preferably, in the step S2, b, the functions of the left-hand master control handle and the right-hand master control handle are mainly to locate the viewing path in advance, the selection key of the left-hand master control handle is used for controlling to change the model angle for viewing the integral part of the automobile, and the trigger key of the left-hand handle simulator is used for switching the viewing angle viewing position.
Preferably, the selection key of the right-hand master control handle is used for controlling and observing the speed of the assembly flow of the whole automobile part, and the trigger key of the right-hand master control handle is used for observing the internal attribute of the whole automobile part model.
Compared with the prior art, the invention has the following beneficial effects:
According to the VR display automobile part assembling method, when the VR display automobile part assembling method is used, an author can wear an active VR device and an active control handle, and automobile part assembling demonstration operation, explanation operation and teaching can be performed; other people can wear the driven glasses to watch, inquiry, questioning and the like can be performed by clicking the driven control handle, after the active control handle releases control, the driven handle can autonomously control to view and switch the interfaces of the automobile parts, and the composition and the assembly flow of each part of the automobile can be seen; therefore, the assembly flow, the installation process and the display mode of each part of the automobile can be conveniently displayed, and the automobile has better education and teaching effects;
The assembly flow chart displayed through VR can select corresponding parts to be consulted according to own requirements, the complicated link of middle data reading is omitted, the data of parts are changed and replaced conveniently, the effect of installing different parts at the same part can be checked, the traditional real object trial assembly flow is replaced, the waste of paper data is reduced, automobile parts required by automobile factory testing, maintenance and training students are reduced, and the service time and service life of each part are prolonged.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
A VR-display automotive component assembly method, the method comprising the steps of:
s1, modeling of parts of a whole automobile;
a. Drawing a vertical view of a vehicle model needing VR display, and making related simplifying assumptions and definitions;
b. Defining a coordinate matrix of each coordinate point on the vertical plane of the automobile model;
c. performing kinematic analysis on the system based on the geometric relationship in the vertical plane of the automobile model by using a displacement matrix method;
d. Defining a stress matrix of each coordinate point;
e. Taking a certain instant in the motion process of the system, analyzing the stress conditions of each research object, and carrying out dynamics analysis;
f. Linearizing the model, namely linearizing the equation obtained in the steps S1 and e at the equilibrium position of the system, and ending the modeling;
s2, establishing data communication connection;
a. Establishing wireless communication connection between an active VR display helmet provided with a displacement sensor, a left-hand master control handle and a right-hand master control handle and a computer for drawing an automobile part model in the step S1 through a wireless transceiver module;
s3, importing automobile part model data;
a. the method comprises the steps that (1) model information of automobile parts drawn by a computer with communication connection relation established in step (S2) is imported into an active VR display helmet through a wireless transceiver module;
s4, the driving VR display helmet is in wireless connection with the driven VR display helmet;
a, preparing a plurality of driven VR display helmets and driven control handles;
b, enabling a plurality of driven VR display helmets and driven control handles to be connected into a system of the driving VR display helmets;
c, controlling the driven VR display helmet to perform operation display through the driving VR display helmet;
s5, displaying the assembly flow of the whole vehicle parts;
a. A user holding the active VR display helmet performs disassembly and assembly work on automobile parts through a master control handle;
b. holding the driven VR display helmet to perform passive real-time animation viewing on the automobile parts disassembled and assembled by the driving VR display helmet;
c. The driven VR display helmet is held to actively access the system, and after the system is successfully accessed, the integration effect of the automobile parts can be independently checked and decomposed through the driven control handle;
as an optimization solution of the present invention, in the steps S1, a, the relevant assumptions and definitions include: definition: AD is a part of an automobile, S point is a sprung mass centroid, T point is a tire centroid, r point is a contact point between a tire and the ground, A, M points are connection points between a suspension and an automobile body, B, C points are mounting points of a spring damper, r point is a tire grounding point, theta is an included angle between a rod AD and the horizontal direction, and an included angle between a control arm and the positive direction of a Y axis is positive in the anticlockwise direction; θ is the angle between the rod AD and the horizontal direction, the angle between the axis of the tire and the vertical direction, and the counterclockwise direction is positive; delta is the expansion and contraction amount of the spring damper, d is the transverse displacement of the contact point of the tire and the ground, alpha is the included angle between the rod MD and the vertical direction, gamma is the included angle between the rod AM and the rod AD, z is the sprung mass displacement, and z is the unsprung mass displacement.
As an optimization technical scheme of the invention, the directions are all positive upwards; is the component of the unsprung mass acceleration in the Y direction; is the component of the unsprung mass acceleration in the Z direction; z is the road surface input displacement, and the directions are positive upwards; the lever length am=l, ad=l, md=l, where L varies with the control arm pivot angle θ, and the extension/contraction amount δ=l-L of the spring damper is set to L when the lever length is at the equilibrium position.
As an optimization technical scheme of the present invention, in the steps S1 and b, let X, X be a coordinate matrix of each point, subscript "0" represents an initial coordinate of the point, and let the coordinate expression of the J point be: j= (J, J), J and J represent coordinates of each point in Y and Z directions, and the J point is replaced with a coordinate point a, B, C, D, M, T in the automobile model elevation view, then:
X＝[B,C,T,D],X＝[A,D,M],X＝[B,C,D,M]
X＝[B,C,T,D],X＝[A,D,M],X＝[B,C,D,M]。
in the steps S1 and f, the model linearization data information includes the sheet metal coordinate position and the chassis coordinate position set in the automobile data model, and the appearance and geometric dimension data information of the hub, the automobile body and the chassis structure.
As an optimization technical scheme of the invention, the size and the appearance of the driving VR display helmet are slightly larger than those of the driven VR display helmet, so that the driving VR display helmet is convenient to rapidly screen.
As an optimization technical scheme of the invention, in the step S2 and the step B, the functions of the left hand main control handle and the right hand main control handle are mainly to locate the watching path in advance, the selection key of the left hand main control handle is used for controlling and changing the model angle for watching the whole automobile part, and the trigger key of the left hand handle simulator is used for switching the position for watching the visual angle.
As an optimization technical scheme of the invention, the selection key of the right-hand master control handle is used for controlling and observing the speed of the assembly flow of the whole automobile parts, and the trigger key of the right-hand master control handle is used for observing the internal attribute of the whole automobile part model.
Embodiment one:
a VR-display automotive component assembly method, the method comprising the steps of:
s1, modeling of parts of a whole automobile;
a. Drawing a vertical view of a vehicle model needing VR display, and making related simplifying assumptions and definitions;
b. Defining a coordinate matrix of each coordinate point on the vertical plane of the automobile model;
c. performing kinematic analysis on the system based on the geometric relationship in the vertical plane of the automobile model by using a displacement matrix method;
d. Defining a stress matrix of each coordinate point;
e. Taking a certain instant in the motion process of the system, analyzing the stress conditions of each research object, and carrying out dynamics analysis;
f. Linearizing the model, namely linearizing the equation obtained in the steps S1 and e at the equilibrium position of the system, and ending the modeling;
s2, establishing data communication connection;
a. Establishing wireless communication connection between an active VR display helmet provided with a displacement sensor, a left-hand master control handle and a right-hand master control handle and a computer for drawing an automobile part model in the step S1 through a wireless transceiver module;
s3, importing automobile part model data;
a. the method comprises the steps that (1) model information of automobile parts drawn by a computer with communication connection relation established in step (S2) is imported into an active VR display helmet through a wireless transceiver module;
s4, the driving VR display helmet is in wireless connection with the driven VR display helmet;
a, preparing a plurality of driven VR display helmets and driven control handles;
b, enabling a plurality of driven VR display helmets and driven control handles to be connected into a system of the driving VR display helmets;
c, controlling the driven VR display helmet to perform operation display through the driving VR display helmet;
s5, displaying the assembly flow of the whole vehicle parts;
a. A user holding the active VR display helmet performs disassembly and assembly work on automobile parts through a master control handle;
b. holding the driven VR display helmet to perform passive real-time animation viewing on the automobile parts disassembled and assembled by the driving VR display helmet;
c. The driven VR display helmet is held to actively access the system, and after the system is successfully accessed, the integration effect of the automobile parts can be independently checked and decomposed through the driven control handle;
In this embodiment, in the step S1, a, the relevant assumptions and definitions include: definition: AD is a part of an automobile, S point is a sprung mass centroid, T point is a tire centroid, r point is a contact point between a tire and the ground, A, M points are connection points between a suspension and an automobile body, B, C points are mounting points of a spring damper, r point is a tire grounding point, theta is an included angle between a rod AD and the horizontal direction, and an included angle between a control arm and the positive direction of a Y axis is positive in the anticlockwise direction; θ is the angle between the rod AD and the horizontal direction, the angle between the axis of the tire and the vertical direction, and the counterclockwise direction is positive; delta is the expansion and contraction amount of the spring damper, d is the transverse displacement of the contact point of the tire and the ground, alpha is the included angle between the rod MD and the vertical direction, gamma is the included angle between the rod AM and the rod AD, z is the sprung mass displacement, and z is the unsprung mass displacement.
In this embodiment, the directions are all positive with respect to the upward direction; is the component of the unsprung mass acceleration in the Y direction; is the component of the unsprung mass acceleration in the Z direction; z is the road surface input displacement, and the directions are positive upwards; the lever length am=l, ad=l, md=l, where L varies with the control arm pivot angle θ, and the extension/contraction amount δ=l-L of the spring damper is set to L when the lever length is at the equilibrium position.
In this embodiment, in the steps S1 and b, let X, X be the coordinate matrix of each point, the subscript "0" represents the initial coordinate of the point, and let the coordinate expression of the J point be: j= (J, J), J and J represent coordinates of each point in Y and Z directions, and the J point is replaced with a coordinate point a, B, C, D, M, T in the automobile model elevation view, then:
X＝[B,C,T,D],X＝[A,D,M],X＝[B,C,D,M]
X＝[B,C,T,D],X＝[A,D,M],X＝[B,C,D,M]。
In this embodiment, in the steps S1 and f, the model linearization data information includes the sheet metal coordinate position and the chassis coordinate position set in the automobile data model, and the appearance and geometry data information of the hub, the body and the chassis structure.
In this embodiment, the size and shape of the driving VR display helmet is slightly larger than the size and shape of the driven VR display helmet, so that rapid screening is facilitated.
In this embodiment, in the step S2, b, the functions of the left-hand master control handle and the right-hand master control handle are mainly to locate the viewing path in advance, the selection key of the left-hand master control handle is used for controlling to change the model angle for viewing the integral part of the automobile, and the trigger key of the left-hand handle simulator is used for switching the viewing angle viewing position.
In this embodiment, the selection key of the right-hand master control handle is used for controlling and observing the speed of the assembly process of the whole automobile part, and the trigger key of the right-hand master control handle is used for observing the internal attribute of the whole automobile part model.
Embodiment two:
a VR-display automotive component assembly method, the method comprising the steps of:
s1, modeling of parts of a whole automobile;
a. Drawing a vertical view of a vehicle model needing VR display, and making related simplifying assumptions and definitions;
b. Defining a coordinate matrix of each coordinate point on the vertical plane of the automobile model;
c. performing kinematic analysis on the system based on the geometric relationship in the vertical plane of the automobile model by using a displacement matrix method;
d. defining a stress matrix of each coordinate point, wherein F, F and F are stress matrices of each point, F and F represent forces applied to each point in Y direction and Z direction, F= (F, F), j can be replaced by coordinate point M, A, D, S, r, and then:
F＝[F,F,F],F＝[F,F,F],F＝[F,F]
Wherein:
F＝kd
in the formula, F is the main power provided by the actuator, k represents the sheet metal part coefficient, and c represents the chassis coefficient;
e. Taking a certain instant in the motion process of the system, analyzing the stress conditions of each research object, and carrying out dynamics analysis;
f. Linearizing the model, namely linearizing the equation obtained in the steps S1 and e at the equilibrium position of the system, and ending the modeling;
s2, establishing data communication connection;
a. Establishing wireless communication connection between an active VR display helmet provided with a displacement sensor, a left-hand master control handle and a right-hand master control handle and a computer for drawing an automobile part model in the step S1 through a wireless transceiver module;
s3, importing automobile part model data;
a. the method comprises the steps that (1) model information of automobile parts drawn by a computer with communication connection relation established in step (S2) is imported into an active VR display helmet through a wireless transceiver module;
s4, the driving VR display helmet is in wireless connection with the driven VR display helmet;
a, preparing a plurality of driven VR display helmets and driven control handles;
b, enabling a plurality of driven VR display helmets and driven control handles to be connected into a system of the driving VR display helmets;
c, controlling the driven VR display helmet to perform operation display through the driving VR display helmet;
s5, displaying the assembly flow of the whole vehicle parts;
a. A user holding the active VR display helmet performs disassembly and assembly work on automobile parts through a master control handle;
b. holding the driven VR display helmet to perform passive real-time animation viewing on the automobile parts disassembled and assembled by the driving VR display helmet;
c. The driven VR display helmet is held to actively access the system, and after the system is successfully accessed, the integration effect of the automobile parts can be independently checked and decomposed through the driven control handle;
In this embodiment, in the step S1, a, the relevant assumptions and definitions include: definition: AD is a part of an automobile, S point is a sprung mass centroid, T point is a tire centroid, r point is a contact point between a tire and the ground, A, M points are connection points between a suspension and an automobile body, B, C points are mounting points of a spring damper, r point is a tire grounding point, theta is an included angle between a rod AD and the horizontal direction, and an included angle between a control arm and the positive direction of a Y axis is positive in the anticlockwise direction; θ is the angle between the rod AD and the horizontal direction, the angle between the axis of the tire and the vertical direction, and the counterclockwise direction is positive; delta is the expansion and contraction amount of the spring damper, d is the transverse displacement of the contact point of the tire and the ground, alpha is the included angle between the rod MD and the vertical direction, gamma is the included angle between the rod AM and the rod AD, z is the sprung mass displacement, and z is the unsprung mass displacement.
Further, the directions are positive upwards; is the component of the unsprung mass acceleration in the Y direction; is the component of the unsprung mass acceleration in the Z direction; z is the road surface input displacement, and the directions are positive upwards; the lever length am=l, ad=l, md=l, where L varies with the control arm pivot angle θ, and the extension/contraction amount δ=l-L of the spring damper is set to L when the lever length is at the equilibrium position.
In this embodiment, in the steps S1 and b, let X, X be the coordinate matrix of each point, the subscript "0" represents the initial coordinate of the point, and let the coordinate expression of the J point be: j= (J, J), J and J represent coordinates of each point in Y and Z directions, and the J point is replaced with a coordinate point a, B, C, D, M, T in the automobile model elevation view, then:
X＝[B,C,T,D],X＝[A,D,M],X＝[B,C,D,M]
X＝[B,C,T,D],X＝[A,D,M],X＝[B,C,D,M]。
In this embodiment, in the steps S1 and f, the model linearization data information includes the sheet metal coordinate position and the chassis coordinate position set in the automobile data model, and the appearance and geometry data information of the hub, the body and the chassis structure.
In this embodiment, the size and shape of the driving VR display helmet is slightly larger than the size and shape of the driven VR display helmet, so that rapid screening is facilitated.
In this embodiment, in the step S2, b, the functions of the left-hand master control handle and the right-hand master control handle are mainly to locate the viewing path in advance, the selection key of the left-hand master control handle is used for controlling to change the model angle for viewing the integral part of the automobile, and the trigger key of the left-hand handle simulator is used for switching the viewing angle viewing position.
In this embodiment, the selection key of the right-hand master control handle is used for controlling and observing the speed of the assembly process of the whole automobile part, and the trigger key of the right-hand master control handle is used for observing the internal attribute of the whole automobile part model.
According to the VR display automobile part assembling method, when the VR display automobile part assembling method is used, an author can wear an active VR device and an active control handle, and automobile part assembling demonstration operation, explanation operation and teaching can be performed; other people can wear the driven glasses to watch, inquiry, questioning and the like can be performed by clicking the driven control handle, after the active control handle releases control, the driven handle can autonomously control to view and switch the interfaces of the automobile parts, and the composition and the assembly flow of each part of the automobile can be seen; therefore, the assembly flow, the installation process and the display mode of each part of the automobile can be conveniently displayed, and the automobile has better education and teaching effects;
The assembly flow chart displayed through VR can select corresponding parts to be consulted according to own requirements, the complicated link of middle data reading is omitted, the data of parts are changed and replaced conveniently, the effect of installing different parts at the same part can be checked, the traditional real object trial assembly flow is replaced, the waste of paper data is reduced, automobile parts required by automobile factory testing, maintenance and training students are reduced, and the service time and service life of each part are prolonged.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A VR show car spare part equipment method, its characterized in that: the method comprises the following steps:
s1, modeling of parts of a whole automobile;
a. drawing a vertical view of a vehicle model needing VR display, and making related simplifying assumptions and definitions;
b. Defining a coordinate matrix of each coordinate point on the vertical plane of the automobile model;
c. performing kinematic analysis on the system based on the geometric relationship in the vertical plane of the automobile model by using a displacement matrix method;
d. Defining a stress matrix of each coordinate point;
e. Taking a certain instant in the motion process of the system, analyzing the stress conditions of each research object, and carrying out dynamics analysis;
f. linearizing the model, namely linearizing the equation obtained in the steps S1 and e at the equilibrium position of the system, and ending the modeling;
s2, establishing data communication connection;
a. establishing wireless communication connection between an active VR display helmet provided with a displacement sensor, a left-hand master control handle and a right-hand master control handle and a computer for drawing an automobile part model in the step S1 through a wireless transceiver module;
s3, importing automobile part model data;
a. the method comprises the steps that (1) model information of automobile parts drawn by a computer with communication connection relation established in step (S2) is imported into an active VR display helmet through a wireless transceiver module;
s4, the driving VR display helmet is in wireless connection with a system of the driven VR display helmet;
a, preparing a plurality of driven VR display helmets and driven control handles;
b, enabling a plurality of driven VR display helmets and driven control handles to be connected into a system of the driving VR display helmets;
c, controlling the driven VR display helmet to perform operation display through the driving VR display helmet;
s5, displaying the assembly flow of the whole vehicle parts;
a. A user holding the active VR display helmet performs disassembly and assembly work on automobile parts through a master control handle;
b. Holding the driven VR display helmet to perform passive real-time animation viewing on the automobile parts disassembled and assembled by the driving VR display helmet;
c. the driven VR display helmet is held to actively access the system, and after the system is successfully accessed, the integration effect of the automobile parts is independently checked and decomposed through the driven control handle.
2. The VR display automotive component assembly method of claim 1, further comprising: in the step S1, a, the relevant assumptions and definitions include: definition: AD is a part of an automobile, S point is a sprung mass centroid, T point is a tire centroid, r point is a contact point between a tire and the ground, A, M points are connection points between a suspension and an automobile body, B, C points are mounting points of a spring damper, r point is a tire grounding point, theta is an included angle between a rod AD and the horizontal direction, and an included angle between a control arm and the positive direction of a Y axis is positive in the anticlockwise direction; θ is the angle between the rod AD and the horizontal direction, the angle between the axis of the tire and the vertical direction, and the counterclockwise direction is positive; delta is the expansion and contraction amount of the spring damper, d is the transverse displacement of the contact point of the tire and the ground, alpha is the included angle between the rod MD and the vertical direction, gamma is the included angle between the rod AM and the rod AD, z is the sprung mass displacement, and z is the unsprung mass displacement.
3. The VR display automotive component assembly method of claim 2, further comprising: the directions are all positive upwards; is the component of the unsprung mass acceleration in the Y direction; is the component of the unsprung mass acceleration in the Z direction; z is the road surface input displacement, and the directions are positive upwards; the lever length am=l, ad=l, md=l, where L varies with the control arm pivot angle θ, and the extension/contraction amount δ=l-L of the spring damper is set to L when the lever length is at the equilibrium position.
4. The VR display automotive component assembly method of claim 1, further comprising: in the step S1, b, let X, X be the coordinate matrix of each point, subscript "0" represents the initial coordinate of the point, and let the coordinate expression of the J point be: j= (J, J), J and J represent coordinates of each point in Y and Z directions, and the J point is replaced with a coordinate point a, B, C, D, M, T in the automobile model elevation view, then:
X＝[B,C,T,D],X＝[A,D,M],X＝[B,C,D,M]
X＝[B,C,T,D],X＝[A,D,M],X＝[B,C,D,M]。
5. A VR display automotive component assembly method in accordance with claim 3, further comprising: in the steps S1 and f, the model linearization data information includes the sheet metal coordinate position and the chassis coordinate position set in the automobile data model, and the appearance and geometric dimension data information of the hub, the automobile body and the chassis structure.
6. The VR display automotive component assembly method of claim 1, further comprising: the size appearance of initiative VR demonstration helmet is slightly greater than the square of size of driven VR demonstration helmet to conveniently carry out the quick screening.
7. The VR display automotive component assembly method of claim 1, further comprising: and S2, the functions of the left hand main control handle and the right hand main control handle in the step a are to locate the watching path in advance, the selection key of the left hand main control handle is used for controlling and changing the model angle for observing the whole part of the automobile, and the trigger key of the left hand handle simulator is used for switching the viewing angle observing position.
8. The VR display automotive component assembly method of claim 7, further comprising: the selection key of the right-hand master control handle is used for controlling and observing the speed of the assembly flow of the whole automobile parts, and the trigger key of the right-hand master control handle is used for observing the internal attribute of the whole automobile part model.
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| DE102014009697A1 (en) * | 2014-06-26 | 2015-12-31 | Audi Ag | Method for operating a mobile virtual reality system in a motor vehicle and mobile virtual reality system |
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| CN106504629A (en) * | 2016-11-04 | 2017-03-15 | 大连文森特软件科技有限公司 | A kind of automobile demonstration memory system based on augmented reality |
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