CN114297776A - VR display automobile part assembling method - Google Patents
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Abstract
The invention discloses a VR display automobile part assembling method, which comprises the following steps: s1, modeling the parts of the whole automobile, S2, establishing data communication connection, S3, importing the model data of the parts of the automobile, S4, wirelessly connecting the driving VR display helmet with the driven VR display helmet, S5 and displaying the assembling process of the parts of the whole automobile, wherein the method can select corresponding parts to look up according to the self requirements through the assembling process chart displayed by VR, so that the complicated link of reading the data in the middle is omitted, the data of the parts can be changed and replaced conveniently, the effect of installing different parts at the same part can be checked, the traditional real object trial assembly process is replaced, the waste of paper data is reduced, the automobile parts required by an automobile factory for testing, maintenance and training students are reduced, and the service time and the service life of each part are prolonged.
Description
Technical Field
The invention discloses a VR display automobile part assembling method, and belongs to the technical field of VR display.
Background
Virtual Reality (abbreviated as VR) is a new practical technology developed in the 20 th century. Virtual reality technology encompasses computer, electronic information, simulation technology, the basic implementation of which is that a computer simulates a virtual environment to give a person a sense of environmental immersion. With the continuous development of social productivity and scientific technology, VR technology is increasingly in great demand in various industries. The VR technology has made great progress and gradually becomes a new scientific and technical field;
however, in the existing automobile part assembling work, the automobile part assembling process is generally shown by the mounting process diagram of the paper file and the electronic file diagram, the content is relatively fixed, the browsing is complicated, and the use is inconvenient, so that the method for R-displaying the automobile part assembling is provided.
Disclosure of Invention
The invention aims to solve the defects and provide a VR display automobile part assembling method.
A VR display automobile part assembling method comprises the following steps:
s1, modeling the parts of the whole automobile;
a. drawing a whole automobile model elevation map needing VR display, and making related simplified assumption and definition;
b. defining a coordinate matrix of each coordinate point on the automobile model elevation;
c. performing kinematic analysis on the system based on the geometric relationship in the automobile model elevation by using a displacement matrix method;
d. defining a stress matrix of each coordinate point;
e. analyzing respective stress conditions of the research objects at a certain moment in the system motion process, and performing dynamic analysis;
f. model linearization, namely linearizing the equation obtained in the step S1, e at the equilibrium position of the system, and ending modeling;
s2, establishing data communication connection;
a. establishing wireless communication connection between the active VR display helmet provided with the displacement sensor, the left-hand main control handle and the right-hand main control handle and the computer for drawing the automobile part model in the step S1 through the wireless transceiving module;
s3, importing automobile part model data of the automobile part model;
a. guiding the automobile part model information drawn by the computer with the communication connection relation established in the step S2 a into the active VR display helmet through the wireless transceiver module;
s4, the driving VR display helmet is wirelessly connected with the 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 helmet together;
c, controlling the driven VR display helmet to perform operation display through the driving VR display helmet;
s5, displaying the assembly process of the parts of the whole vehicle;
a. a user holding the active VR display helmet carries out the work of disassembling and assembling automobile parts through the main control handle;
b. the driven VR display helmet is held to perform passive real-time animation viewing on the automobile parts disassembled and assembled by the active 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 automobile parts can be automatically checked and decomposed through the driven control handle;
preferably, in step S1, a, the related assumptions and definitions include: defining: AD is a part of an automobile, S point is a spring-loaded mass center, T point is a tire center, r point is a contact point between a tire and the ground, A, M point is a connection point between a suspension and a vehicle body, B, C point is a spring damper mounting point, r point is a tire grounding point, theta is an included angle between a rod AD and the horizontal direction, and the included angle between a control arm and the positive direction of a Y axis is defined as positive in the anticlockwise direction; theta is an included angle between the rod AD and the horizontal direction, is an included angle between the axis of the tire and the vertical direction, and takes the anticlockwise direction as positive; delta is the extension and contraction amount of the spring shock absorber, d is the transverse displacement of a contact point of the tire and the ground, alpha is an included angle between a rod MD and the vertical direction, gamma is an included angle between a rod AM and an AD, z is sprung mass displacement, and z is unsprung mass displacement.
Preferably, the directions are all positive in the upward direction; is the component of unsprung mass acceleration in the Y direction; is the component of the unsprung mass acceleration in the Z direction; z is the input displacement of the road surface, and the directions are all positive; the rod length AM is L, AD is L, and MD is L, where L varies with the control arm pivot angle θ, and the length of the rod at the equilibrium position is L, the amount of extension and retraction δ of the spring damper is L-L.
Preferably, in step S1, b, let X, X be the coordinate matrix of each point, subscript "0" denote the initial coordinates of the point, and let the coordinates of J point be expressed as: j ═ J, J and J denote the coordinates of each point in the Y and Z directions, and replacing J with coordinate points a, B, C, D, M, T in the automobile model elevation, 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 step S1, 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.
Preferably, the size appearance of the driving VR display helmet is slightly larger than the size square of the driven VR display helmet, so that rapid screening can be conveniently performed.
Preferably, in step S2, the left-hand master control handle and the right-hand master control handle have functions of positioning the viewing path in advance, the selection key of the left-hand master control handle is used for controlling and changing the model angle for viewing the automobile integral part, 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 main control handle is used for controlling the speed of observing the assembly process of the whole automobile parts, and the trigger key of the right-hand main control handle is used for observing the internal attributes of the whole automobile part model.
Compared with the prior art, the invention has the following beneficial effects:
according to the method for assembling the VR display automobile parts, when the method is used, an author can wear the active VR device and the active control handle, and can perform automobile part assembling demonstration operation, explanation operation and teaching; other people can wear the driven glasses for watching, can inquire, ask questions and the like by clicking through the driven control handle, and after the active control handle releases control, the driven handle can automatically control to check and switch automobile part interfaces, and the composition and the assembly process of each part of the automobile can be seen; therefore, the assembly process, the installation process and the display mode of each part of the automobile can be conveniently displayed, and the automobile has a good education and teaching effect;
the assembly flow chart that shows through VR can select corresponding position according to the demand of self and look up, saves the loaded down with trivial details link of middle data of turning over, and the data change replacement of part is convenient, can look over the effect of the different parts of same position installation, has replaced traditional trial assembly flow in kind, reduces the waste of paper data and reduces the auto-parts that the test of auto-factory, maintenance and training student all need, improves the live time and the life of every accessory.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A VR display automobile part assembling method comprises the following steps:
s1, modeling the parts of the whole automobile;
a. drawing a whole automobile model elevation map needing VR display, and making related simplified assumption and definition;
b. defining a coordinate matrix of each coordinate point on the automobile model elevation;
c. performing kinematic analysis on the system based on the geometric relationship in the automobile model elevation by using a displacement matrix method;
d. defining a stress matrix of each coordinate point;
e. analyzing respective stress conditions of the research objects at a certain moment in the system motion process, and performing dynamic analysis;
f. model linearization, namely linearizing the equation obtained in the step S1, e at the equilibrium position of the system, and ending modeling;
s2, establishing data communication connection;
a. establishing wireless communication connection between the active VR display helmet provided with the displacement sensor, the left-hand main control handle and the right-hand main control handle and the computer for drawing the automobile part model in the step S1 through the wireless transceiving module;
s3, importing automobile part model data;
a. guiding the automobile part model information drawn by the computer with the communication connection relation established in the step S2 a into the active VR display helmet through the wireless transceiver module;
s4, wirelessly connecting the driving VR display helmet 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 helmet together;
c, controlling the driven VR display helmet to perform operation display through the driving VR display helmet;
s5, displaying the assembly process of the parts of the whole vehicle;
a. a user holding the active VR display helmet carries out the work of disassembling and assembling automobile parts through the main control handle;
b. the driven VR display helmet is held to perform passive real-time animation viewing on the automobile parts disassembled and assembled by the active 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 automobile parts can be automatically checked and decomposed through the driven control handle;
as an optimized technical solution of the present invention, in step S1, a, the related assumptions and definitions include: defining: AD is a part of an automobile, S point is a spring-loaded mass center, T point is a tire center, r point is a contact point between a tire and the ground, A, M point is a connection point between a suspension and a vehicle body, B, C point is a spring damper mounting point, r point is a tire grounding point, theta is an included angle between a rod AD and the horizontal direction, and the included angle between a control arm and the positive direction of a Y axis is defined as positive in the anticlockwise direction; theta is an included angle between the rod AD and the horizontal direction, is an included angle between the axis of the tire and the vertical direction, and takes the anticlockwise direction as positive; delta is the extension and contraction amount of the spring shock absorber, d is the transverse displacement of a contact point of the tire and the ground, alpha is an included angle between a rod MD and the vertical direction, gamma is an included angle between a rod AM and an AD, z is sprung mass displacement, and z is unsprung mass displacement.
As an optimized technical scheme of the invention, the directions are all upward; is the component of unsprung mass acceleration in the Y direction; is the component of the unsprung mass acceleration in the Z direction; z is the input displacement of the road surface, and the directions are all positive; the rod length AM is L, AD is L, and MD is L, where L varies with the control arm pivot angle θ, and the length of the rod at the equilibrium position is L, the amount of extension and retraction δ of the spring damper is L-L.
As an optimized technical solution of the present invention, in the step S1, b, X is a coordinate matrix of each point, a subscript "0" represents an initial coordinate of the point, and a coordinate of a point J is expressed as: j ═ J, J and J denote the coordinates of each point in the Y and Z directions, and replacing J with coordinate points a, B, C, D, M, T in the automobile model elevation, 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]。
as an optimized technical solution of the present invention, in step S1, 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.
As an optimized technical scheme of the invention, the size and the appearance of the driving VR display helmet are slightly larger than the size and the square of the driven VR display helmet, so that the driving VR display helmet can be conveniently and quickly discriminated.
As an optimized technical solution of the present invention, in the step S2, the left-hand master control handle and the right-hand master control handle have functions of positioning a viewing path in advance, the selection key of the left-hand master control handle is used for controlling and changing a model angle for viewing the whole part of the automobile, and the trigger key of the left-handle simulator is used for switching a viewing angle viewing position.
As an optimized technical scheme, the selection key of the right-hand main control handle is used for controlling the speed of observing the assembly process of the whole automobile parts, and the trigger key of the right-hand main control handle is used for observing the internal attributes of the whole automobile part model.
The first embodiment is as follows:
a VR display automobile part assembling method comprises the following steps:
s1, modeling the parts of the whole automobile;
a. drawing a whole automobile model elevation map needing VR display, and making related simplified assumption and definition;
b. defining a coordinate matrix of each coordinate point on the automobile model elevation;
c. performing kinematic analysis on the system based on the geometric relationship in the automobile model elevation by using a displacement matrix method;
d. defining a stress matrix of each coordinate point;
e. analyzing respective stress conditions of the research objects at a certain moment in the system motion process, and performing dynamic analysis;
f. model linearization, namely linearizing the equation obtained in the step S1, e at the equilibrium position of the system, and ending modeling;
s2, establishing data communication connection;
a. establishing wireless communication connection between the active VR display helmet provided with the displacement sensor, the left-hand main control handle and the right-hand main control handle and the computer for drawing the automobile part model in the step S1 through the wireless transceiving module;
s3, importing automobile part model data;
a. guiding the automobile part model information drawn by the computer with the communication connection relation established in the step S2 a into the active VR display helmet through the wireless transceiver module;
s4, wirelessly connecting the driving VR display helmet 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 helmet together;
c, controlling the driven VR display helmet to perform operation display through the driving VR display helmet;
s5, displaying the assembly process of the parts of the whole vehicle;
a. a user holding the active VR display helmet carries out the work of disassembling and assembling automobile parts through the main control handle;
b. the driven VR display helmet is held to perform passive real-time animation viewing on the automobile parts disassembled and assembled by the active 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 automobile parts can be automatically checked and decomposed through the driven control handle;
in this embodiment, in step S1, a, the related assumption and definition includes: defining: AD is a part of an automobile, S point is a spring-loaded mass center, T point is a tire center, r point is a contact point between a tire and the ground, A, M point is a connection point between a suspension and a vehicle body, B, C point is a spring damper mounting point, r point is a tire grounding point, theta is an included angle between a rod AD and the horizontal direction, and the included angle between a control arm and the positive direction of a Y axis is defined as positive in the anticlockwise direction; theta is an included angle between the rod AD and the horizontal direction, is an included angle between the axis of the tire and the vertical direction, and takes the anticlockwise direction as positive; delta is the extension and contraction amount of the spring shock absorber, d is the transverse displacement of a contact point of the tire and the ground, alpha is an included angle between a rod MD and the vertical direction, gamma is an included angle between a rod AM and an AD, z is sprung mass displacement, and z is unsprung mass displacement.
In this embodiment, the directions are all positive in the upward direction; is the component of unsprung mass acceleration in the Y direction; is the component of the unsprung mass acceleration in the Z direction; z is the input displacement of the road surface, and the directions are all positive; the rod length AM is L, AD is L, and MD is L, where L varies with the control arm pivot angle θ, and the length of the rod at the equilibrium position is L, the amount of extension and retraction δ of the spring damper is L-L.
In this embodiment, in step S1, 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 of the J point be expressed as: j ═ J, J and J denote the coordinates of each point in the Y and Z directions, and replacing J with coordinate points a, B, C, D, M, T in the automobile model elevation, 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 step S1, 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.
In this embodiment, the size appearance of initiative VR display helmet slightly is greater than driven VR display helmet's size square to conveniently distinguish fast.
In this embodiment, in step S2, the left-hand master control handle and the right-hand master control handle mainly have the functions of positioning the viewing path in advance, the selection key of the left-hand master control handle is used to control and change the angle of the model for viewing the whole part of the automobile, and the trigger key of the left-handle simulator is used to switch the viewing angle viewing position.
In this embodiment, the select key of the right-hand master control handle is used for controlling the speed of observing the assembly process of the whole automobile parts, and the trigger key of the right-hand master control handle is used for viewing the internal attributes of the whole automobile part model.
Example two:
a VR display automobile part assembling method comprises the following steps:
s1, modeling the parts of the whole automobile;
a. drawing a whole automobile model elevation map needing VR display, and making related simplified assumption and definition;
b. defining a coordinate matrix of each coordinate point on the automobile model elevation;
c. performing kinematic analysis on the system based on the geometric relationship in the automobile model elevation by using a displacement matrix method;
d. defining a force matrix for each coordinate point, where F, F are each point force matrix, and F represent the forces that each point is subjected to in the Y direction and the Z direction, where F ═ F, j can be replaced by coordinate point M, A, D, S, r, then:
F＝[F,F,F],F＝[F,F,F],F＝[F,F]
in the formula:
F＝kd
in the formula, F is the main power provided by the actuator, k represents the coefficient of the sheet metal part, and c represents the coefficient of the chassis;
e. analyzing respective stress conditions of the research objects at a certain moment in the system motion process, and performing dynamic analysis;
f. model linearization, namely linearizing the equation obtained in the step S1, e at the equilibrium position of the system, and ending modeling;
s2, establishing data communication connection;
a. establishing wireless communication connection between the active VR display helmet provided with the displacement sensor, the left-hand main control handle and the right-hand main control handle and the computer for drawing the automobile part model in the step S1 through the wireless transceiving module;
s3, importing automobile part model data;
a. guiding the automobile part model information drawn by the computer with the communication connection relation established in the step S2 a into the active VR display helmet through the wireless transceiver module;
s4, wirelessly connecting the driving VR display helmet 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 helmet together;
c, controlling the driven VR display helmet to perform operation display through the driving VR display helmet;
s5, displaying the assembly process of the parts of the whole vehicle;
a. a user holding the active VR display helmet carries out the work of disassembling and assembling automobile parts through the main control handle;
b. the driven VR display helmet is held to perform passive real-time animation viewing on the automobile parts disassembled and assembled by the active 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 automobile parts can be automatically checked and decomposed through the driven control handle;
in this embodiment, in step S1, a, the related assumption and definition includes: defining: AD is a part of an automobile, S point is a spring-loaded mass center, T point is a tire center, r point is a contact point between a tire and the ground, A, M point is a connection point between a suspension and a vehicle body, B, C point is a spring damper mounting point, r point is a tire grounding point, theta is an included angle between a rod AD and the horizontal direction, and the included angle between a control arm and the positive direction of a Y axis is defined as positive in the anticlockwise direction; theta is an included angle between the rod AD and the horizontal direction, is an included angle between the axis of the tire and the vertical direction, and takes the anticlockwise direction as positive; delta is the extension and contraction amount of the spring shock absorber, d is the transverse displacement of a contact point of the tire and the ground, alpha is an included angle between a rod MD and the vertical direction, gamma is an included angle between a rod AM and an AD, z is sprung mass displacement, and z is unsprung mass displacement.
Further, the directions are all positive in the upward direction; is the component of unsprung mass acceleration in the Y direction; is the component of the unsprung mass acceleration in the Z direction; z is the input displacement of the road surface, and the directions are all positive; the rod length AM is L, AD is L, and MD is L, where L varies with the control arm pivot angle θ, and the length of the rod at the equilibrium position is L, the amount of extension and retraction δ of the spring damper is L-L.
In this embodiment, in step S1, 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 of the J point be expressed as: j ═ J, J and J denote the coordinates of each point in the Y and Z directions, and replacing J with coordinate points a, B, C, D, M, T in the automobile model elevation, 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 step S1, 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.
In this embodiment, the size appearance of initiative VR display helmet slightly is greater than driven VR display helmet's size square to conveniently distinguish fast.
In this embodiment, in step S2, the left-hand master control handle and the right-hand master control handle mainly have the functions of positioning the viewing path in advance, the selection key of the left-hand master control handle is used to control and change the angle of the model for viewing the whole part of the automobile, and the trigger key of the left-handle simulator is used to switch the viewing angle viewing position.
In this embodiment, the select key of the right-hand master control handle is used for controlling the speed of observing the assembly process of the whole automobile parts, and the trigger key of the right-hand master control handle is used for viewing the internal attributes of the whole automobile part model.
According to the method for assembling the VR display automobile parts, when the method is used, an author can wear the active VR device and the active control handle, and can perform automobile part assembling demonstration operation, explanation operation and teaching; other people can wear the driven glasses for watching, can inquire, ask questions and the like by clicking through the driven control handle, and after the active control handle releases control, the driven handle can automatically control to check and switch automobile part interfaces, and the composition and the assembly process of each part of the automobile can be seen; therefore, the assembly process, the installation process and the display mode of each part of the automobile can be conveniently displayed, and the automobile has a good education and teaching effect;
the assembly flow chart that shows through VR can select corresponding position according to the demand of self and look up, saves the loaded down with trivial details link of middle data of turning over, and the data change replacement of part is convenient, can look over the effect of the different parts of same position installation, has replaced traditional trial assembly flow in kind, reduces the waste of paper data and reduces the auto-parts that the test of auto-factory, maintenance and training student all need, improves the live time and the life of every accessory.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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 display automobile part assembling method is characterized in that: the method comprises the following steps:
s1, modeling the parts of the whole automobile;
a. drawing a whole automobile model elevation map needing VR display, and making related simplified assumption and definition;
b. defining a coordinate matrix of each coordinate point on the automobile model elevation;
c. performing kinematic analysis on the system based on the geometric relationship in the automobile model elevation by using a displacement matrix method;
d. defining a stress matrix of each coordinate point;
e. analyzing respective stress conditions of the research objects at a certain moment in the system motion process, and performing dynamic analysis;
f. model linearization, namely linearizing the equation obtained in the step S1, e at the equilibrium position of the system, and ending modeling;
s2, establishing data communication connection;
a. establishing wireless communication connection between the active VR display helmet provided with the displacement sensor, the left-hand main control handle and the right-hand main control handle and the computer for drawing the automobile part model in the step S1 through the wireless transceiving module;
s3, importing automobile part model data;
a. guiding the automobile part model information drawn by the computer with the communication connection relation established in the step S2 a into the active VR display helmet through the wireless transceiver module;
s4, the driving VR display helmet is wirelessly connected with the 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 helmet together;
c, controlling the driven VR display helmet to perform operation display through the driving VR display helmet;
s5, displaying the assembly process of the parts of the whole vehicle;
a. a user holding the active VR display helmet carries out the work of disassembling and assembling automobile parts through the main control handle;
b. the driven VR display helmet is held to perform passive real-time animation viewing on the automobile parts disassembled and assembled by the active VR display helmet;
c. holding driven VR display helmet and carrying out initiative visit to the system, after the visit succeeds, the accessible driven control handle is independently looked over and is decomposed automobile parts and integrate the effect.
2. The method of claim 1, wherein the VR demonstration automobile part assembly method comprises: in step S1, a, the related assumption and definition includes: defining: AD is a part of an automobile, S point is a spring-loaded mass center, T point is a tire center, r point is a contact point between a tire and the ground, A, M point is a connection point between a suspension and a vehicle body, B, C point is a spring damper mounting point, r point is a tire grounding point, theta is an included angle between a rod AD and the horizontal direction, and the included angle between a control arm and the positive direction of a Y axis is defined as positive in the anticlockwise direction; theta is an included angle between the rod AD and the horizontal direction, is an included angle between the axis of the tire and the vertical direction, and takes the anticlockwise direction as positive; delta is the extension and contraction amount of the spring shock absorber, d is the transverse displacement of a contact point of the tire and the ground, alpha is an included angle between a rod MD and the vertical direction, gamma is an included angle between a rod AM and an AD, z is sprung mass displacement, and z is unsprung mass displacement.
3. The method of claim 2, wherein the VR demonstration automobile part assembly method comprises: the directions are all positive in the upward direction; is the component of unsprung mass acceleration in the Y direction; is the component of the unsprung mass acceleration in the Z direction; z is the input displacement of the road surface, and the directions are all positive; the rod length AM is L, AD is L, and MD is L, where L varies with the control arm pivot angle θ, and the length of the rod at the equilibrium position is L, the amount of extension and retraction δ of the spring damper is L-L.
4. The method of claim 1, wherein the VR demonstration automobile part assembly method comprises: in step S1, b, let X, X be the coordinate matrix of each point, subscript "0" denote the initial coordinate of the point, let the coordinate expression of J be: j ═ J, J and J denote the coordinates of each point in the Y and Z directions, and replacing J with coordinate points a, B, C, D, M, T in the automobile model elevation, 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. the method of claim 3, wherein the VR display automobile part assembly method further comprises: in step S1, 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 method of claim 1, wherein the VR demonstration automobile part assembly method comprises: the size appearance of initiative VR display helmet slightly is greater than driven VR display helmet's size square to conveniently discriminate fast.
7. The method of claim 1, wherein the VR demonstration automobile part assembly method comprises: in the step S2, the left-hand master control handle and the right-hand master control handle have the functions of positioning the viewing path in advance, the selection key of the left-hand master control handle is used for controlling and changing the angle of the model for viewing the whole part of the automobile, and the trigger key of the left-handle simulator is used for switching the viewing angle viewing position.
8. The method of claim 7, wherein the VR demonstration automobile part assembly method comprises: the selection key of the right-hand master control handle is used for controlling the speed of observing the assembly process of the whole automobile parts, and the trigger key of the right-hand master control handle is used for checking the internal attributes of the whole automobile part model.
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