CN111595602A - Five-axis steering test equipment for intelligent networked automobile - Google Patents
Five-axis steering test equipment for intelligent networked automobile Download PDFInfo
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- CN111595602A CN111595602A CN202010639361.6A CN202010639361A CN111595602A CN 111595602 A CN111595602 A CN 111595602A CN 202010639361 A CN202010639361 A CN 202010639361A CN 111595602 A CN111595602 A CN 111595602A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/06—Steering behaviour; Rolling behaviour
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Abstract
The invention relates to an intelligent networked automobile five-axis steering test device, which comprises a base, two groups of steering driving components for simulating road load and steering load, and a servo motor for simulating steering action of a steering wheel, wherein the two groups of steering driving components are connected with the base through a connecting rod; the two groups of steering driving components are respectively arranged on two sides of the base; the servo motor is connected with the sample to be measured through a coupler; meanwhile, an intelligent temperature control box is matched to perform high and low temperature tests on the sample to be tested; the invention solves the problem of high-performance combined linkage test of intelligent networked automobile parts in the research and development stage, is different from the traditional single-part test, can simulate the test executed in the whole automobile load environment and the linkage cooperation test with the electric control part in a ring, and greatly improves the research and development efficiency of the parts.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an intelligent networking automobile five-axis steering test device.
Background
With the development of society and the improvement of the living standard of people, the automobile output all over the world increases year by year, and the automobile market in China has wide prospect, so that some parts in the automobile also have very wide market prospect. With the development of technology, the product is inevitably updated, old products are finally replaced by new products, the traditional HPS (hydraulic power steering is also replaced by EPS (electric power steering), the EPS is applied to light vehicles (cars) at present, and the performance of the EPS is generally accepted by people.
The key technology of the automobile electric power steering device relates to the fields of machinery, motors, electronics, control, materials and the like, and is a typical electromechanical integrated product. With the development of the electric power steering apparatus of the automobile, in order to improve the performance of the apparatus and to ensure the quality of the product, the performance detection of the electric power steering apparatus of the automobile is particularly important. The supervision and inspection of the automobile electric power steering device are enhanced, the faults of parts are reduced, accidents are avoided, problems are found, and the automobile electric power steering device is maintained in time, so that the technical performance of the automobile electric power steering device is ensured to be in a good state.
At present, most of automobile steering test devices are three-axis, test items are limited, test precision is limited, and evaluation of comprehensive performance of the steering device is influenced. For example, chinese patent CN101696908A discloses a performance test device for an automobile steering system, which comprises a steering simulation system, an axial loading system, a suspension simulation system and an automobile steering system, wherein the steering simulation system simulates rotation of a steering wheel in an automatic and manual manner, the axial loading system simulates a steering load and loads the steering load to the automobile steering system (composed of a steering column, a steering gear, a tie rod and a simulated knuckle) through a Bell mechanism, and the suspension simulation system simulates wheel bounce when the automobile runs.
Therefore, how to provide an automobile steering test device to solve the problems in the prior art is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of this, the present application aims to provide an intelligent networked automobile five-axis steering test device, so as to implement a high-performance joint linkage test, and further improve a test method of a core component, wherein the test method is convenient to use, good in reliability, high in precision, and easy to maintain.
In order to achieve the above object, the present application provides the following technical solutions.
An intelligent networked automobile five-axis steering test device comprises a base, two groups of steering driving assemblies for simulating road load and steering load, and a servo motor for simulating steering action of a steering wheel;
the two groups of steering driving components are respectively arranged on two sides of the base; the servo motor is connected with the sample to be measured through a coupler.
Preferably, each set of steering drive assemblies comprises:
the bracket is a movable bracket so as to meet the parameter structures of different vehicle steering systems;
the transverse driving mechanism is used for providing transverse applied acting force to realize transverse displacement action;
a longitudinal driving mechanism for providing a longitudinal applied force to effect a longitudinal displacement action;
and the actuating rod pieces are used for realizing the connection of the transverse driving mechanism and the longitudinal driving mechanism with the sample to be measured.
Preferably, the actuating rod pieces comprise a first actuating rod piece, a second actuating rod piece, a third actuating rod piece and a fourth actuating rod piece, and adjacent actuating rod pieces are connected through a spherical hinge;
the first actuating rod piece and the second actuating rod piece are used for realizing transverse displacement action, and the third actuating rod piece is used for realizing longitudinal displacement action.
Preferably, the transverse driving mechanism and the longitudinal driving mechanism are respectively connected with the actuating rod piece through a guide bearing and a knuckle force arm.
Preferably, a transmission force sensor for monitoring transmission force is arranged at the joint of the transverse driving mechanism and the actuating rod piece.
Preferably, a plane thrust needle roller bearing is arranged at the joint of the longitudinal driving mechanism and the actuating rod piece, so that high axial load force can be obtained in a small space.
Preferably, a pull rod force sensor is arranged at the joint of the actuating rod piece and the sample to be measured, and is used for collecting corresponding pull rod force.
Preferably, the equipment further comprises an intelligent temperature control box for realizing high and low temperature tests on the tested sample, and the intelligent temperature control box is provided with a visual display screen for realizing real-time temperature display and recording.
Preferably, the base is a T-shaped groove floor, and an air damper is arranged below the base.
Preferably, the apparatus further comprises:
an electrically driven cabinet providing a basic equipment power supply;
the HIL system cabinet is based on an NI PXI architecture, provides a vehicle dynamics simulation software platform by combining with a mainstream CARSIM (vehicle identification Module), and performs real-time data acquisition, monitoring and recording processing;
and the automatic measurement and control upper computer can display relevant parameters of equipment in real time and issue and receive relevant operation instructions in real time.
The beneficial technical effects obtained by the invention are as follows:
1) the invention solves the high-performance joint linkage test of the intelligent networked automobile parts in the research and development stage, is different from the traditional single-part test, and can simulate the test executed in the whole automobile load environment and the linkage cooperation test with the electric control part in a ring, thereby greatly improving the research and development efficiency of the parts;
2) the dynamic coupling action coefficient of the invention is highly complex, reaches 5 axes, and can realize the transverse and longitudinal load of the road; the technical parameter requirement is high, and the requirements accord with the levels of all passenger vehicles and partial commercial vehicles; the control and execution unit performs real-time combined test to realize the intelligent in-loop test of the semi-physical HIL hardware;
3) the invention is suitable for semi-physical hardware-in-the-loop test equipment of key parts of an automobile, and is characterized in that a sensing system, an execution system and a control system can be jointly placed in the same test environment to obtain a test result of the key parts of all the systems;
4) the invention has good expansibility, reserves interfaces such as industrial Ethernet and the like, and can carry out joint communication simulation with other ADAS (advanced driver assistance) test equipment.
The foregoing description is only an overview of the technical solutions of the present application, so that the technical means of the present application can be more clearly understood and the present application can be implemented according to the content of the description, and in order to make the above and other objects, features and advantages of the present application more clearly understood, the following detailed description is made with reference to the preferred embodiments of the present application and the accompanying drawings.
The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural diagram of an intelligent networked automobile five-axis steering test device in an embodiment of the disclosure;
FIG. 2 is a schematic structural diagram of a steering drive assembly according to an embodiment of the present disclosure;
fig. 3 is an enlarged view of a portion a of fig. 1.
In the above drawings: 10. a base; 101. an air damper; 20. a steering drive assembly; 201. a support; 202. a lateral drive mechanism; 203. a longitudinal drive mechanism; 204. a first actuating lever; 205. a second actuating lever; 206. a third actuating lever; 207. a fourth actuating lever; 30. a servo motor; 301. a coupling; 40. a sample to be measured; 50. spherical hinge; 60. a transmission force sensor; 70. a planar thrust needle bearing; 80. a pull rod force sensor; 90. an intelligent temperature control box; 100. a rack displacement sensor; 110. a torque sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. In the following description, specific details such as specific configurations and components are provided only to help the embodiments of the present application be fully understood. Accordingly, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions are omitted in the embodiments for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "the embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrase "one embodiment" or "the present embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Further, the present application may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, B exists alone, and A and B exist at the same time, and the term "/and" is used herein to describe another association object relationship, which means that two relationships may exist, for example, A/and B, may mean: a alone, and both a and B alone, and further, the character "/" in this document generally means that the former and latter associated objects are in an "or" relationship.
The term "at least one" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, at least one of a and B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.
Example 1
As shown in fig. 1, the five-axis steering test equipment for the intelligent networked automobile comprises a base 10, two groups of steering driving assemblies 20 for simulating road load and steering load, and a servo motor 30 for simulating steering action of a steering wheel.
The two groups of steering driving components 20 are respectively arranged at two sides of the base 10; the servo motor 30 is connected with the sample 40 to be measured through a coupler 301.
As shown in fig. 2, each of the steering driving assemblies 20 includes a bracket 201, a transverse driving mechanism 202, a longitudinal driving mechanism 203, and at least 4 actuating rods.
The support 201 is a movable support, and can move transversely to meet parameter structures of different vehicle steering systems.
The lateral drive mechanism 202 is used to provide a laterally applied force to effect the lateral displacement action.
The longitudinal driving mechanism 203 is used for providing longitudinal applied force to realize longitudinal displacement action.
The transverse driving mechanism 202 and the longitudinal driving mechanism 203 are both driven by oil cylinders.
In one embodiment, the transverse driving mechanism 202 and the longitudinal driving mechanism 203 are both driving motors.
In one embodiment, the transverse driving mechanism 202 and the longitudinal driving mechanism 203 are at least one of cylinder driving and driving motors.
And at least 4 actuating rod pieces are used for realizing the connection of the transverse driving mechanism 202 and the longitudinal driving mechanism 203 with the sample to be measured 40.
The actuating rod members include a first actuating rod member 204, a second actuating rod member 205, a third actuating rod member 206 and a fourth actuating rod member 207, and adjacent actuating rod members are connected through a spherical hinge 50.
The first actuating rod 204 and the second actuating rod 205 are used for implementing a transverse displacement action, one end of the first actuating rod 204 is connected with the transverse driving mechanism 202, and the other end is connected with the second actuating rod 205.
The third actuating rod 206 is used for realizing longitudinal displacement, one end of the third actuating rod 206 is connected with the longitudinal driving mechanism 203, the other end of the third actuating rod is connected with one end of the fourth actuating rod 207, and the other end of the fourth actuating rod 207 is connected with the sample to be measured 40.
In one embodiment, the transverse driving mechanism 202 and the longitudinal driving mechanism 203 are respectively connected with the actuating rod through a guide bearing and a knuckle arm, and meanwhile, the action force is applied to the actuating rod in the transverse direction (longitudinal direction) to achieve the displacement in the transverse direction (longitudinal direction).
In one embodiment, a transmission force sensor 60 for monitoring the transmission force is provided at the connection between the lateral driving mechanism 202 and the actuator member for monitoring whether the actuation force is within the normal range.
Further, the transmission force sensor 60 is a 6-degree-of-freedom force sensor.
In one embodiment, the connection between the longitudinal drive mechanism 203 and the actuator rod is provided with a flat needle thrust bearing 70 to achieve high axial load force in a small space.
In one embodiment, a pull rod force sensor 80 is provided at the connection of the actuator rod and the sample under test 40 for acquiring the corresponding pull rod force.
The working principle of each group of steering drive assemblies 20 is as follows: the second actuating rod drives the transverse spherical hinge 50, meanwhile, the transverse spherical hinge 50 and the actuating force of the third actuating rod are applied to the steering knuckle force arm together, the spherical hinge 50 at the end part of the fourth actuating rod is driven to provide resistance after transverse and longitudinal coordinates are superposed for the tested sample 40 through the space vector superposition principle, and the resistance can be captured and recorded by the pull rod force sensor 80, so that the effect of simulating steering load and road load is achieved.
In one embodiment, a connecting rod is provided on the sample 40, and a rack displacement sensor 100 (lateral, longitudinal) is mounted on the connecting rod, as shown in fig. 3, the servo motor 30 is connected to the connecting rod through a coupling 301, and a torque sensor 110 for calculating the steering angle is provided.
In one embodiment, the equipment further comprises an intelligent temperature control box 90, wherein the intelligent temperature control box 90 is used for wrapping the tested sample 40, so that high and low temperature tests are performed on the tested sample 40, and the performance of the vehicle steering system is further improved.
The intelligent temperature control box 90 is provided with a visual liquid crystal display screen, so that real-time temperature display and recording are realized.
In one embodiment, the temperature adjusting range of the intelligent temperature control box 90 is-40 to 150 ℃, the adjusting precision is ± 1 ℃, and at least 2 industrial ethernet EtherCAT interfaces are reserved, so that high and low temperature related values can be transmitted to the platform at a maximum frequency of 1000 Hz.
In one embodiment, the base 10 is a T-shaped groove floor, and the air damper 101 is disposed below the base 10, so that the overall vibration of the rack caused by the tested sample 40 during testing can be effectively reduced, and the abrasion to the ground can be reduced.
In one embodiment, the equipment further comprises an electric drive cabinet, an HIL system cabinet and an automatic measurement and control upper computer.
The electrically driven cabinet provides a basic equipment power supply.
The HIL system cabinet is based on an NIPXI architecture, provides a vehicle dynamics simulation software platform by combining with mainstream CARSIM, and performs real-time data acquisition, monitoring and recording processing.
The automatic measurement and control upper computer can display relevant parameters of equipment in real time and issue and receive relevant operation instructions in real time.
The numerical value of the actuating element of the tested sample 40 collected by the sensor and the calculated numerical value processed by the steering system ECU are jointly input to an HIL system in an automatic measurement and control upper computer in the form of a CAN interface, meanwhile, the external load value loaded by the five-axis steering test equipment (including the numerical values of the actuating element and the intelligent temperature control box 90) is input to the HIL system for processing through the industrial Ethernet EtherCAT, is matched with a vehicle dynamic model, and then the calculated numerical value is returned to the five-axis steering test equipment to achieve the effect of closed loop.
The working principle of the device is as follows: through two groups of steering driving assemblies 20, namely two transverse driving mechanisms 202 and two longitudinal driving mechanisms 203, 2 transverse (simulated steering load) and 2 longitudinal (simulated road load) loading forces are respectively provided, namely 4 shafts in five-shaft steering test equipment are represented, and 4 degrees of freedom are possessed; the steering force and the steering angle are provided through a servo motor 30 simulating a steering wheel of the vehicle, namely representing the 5 th shaft in the five-shaft steering test equipment; meanwhile, The matched intelligent temperature control box 90 can perform high and low temperature tests on The tested sample 40 of The steering system, and finally, The actions of The tested base 10 are completely mapped to software to perform vehicle dynamics simulation and calculate and feed back corresponding numerical values by matching with a hardware-in-loop system in an HIL (Hardwaren The Loop) system cabinet integrated in The base 10, so that The semi-physical HIL hardware-in-loop test is completed.
The above description is only a preferred embodiment of the present invention, and it is not intended to limit the scope of the present invention, and various modifications and changes may be made by those skilled in the art. Variations, modifications, substitutions, integrations and parameter changes of the embodiments may be made without departing from the principle and spirit of the invention, which may be within the spirit and principle of the invention, by conventional substitution or may realize the same function.
Claims (10)
1. The five-axis steering test equipment for the intelligent networked automobile is characterized by comprising a base (10), two groups of steering driving assemblies (20) for simulating road load and steering load, and a servo motor (30) for simulating steering action of a steering wheel;
the two groups of steering driving components (20) are respectively arranged on two sides of the base (10); the servo motor (30) is connected with the sample to be measured (40) through a coupler (301).
2. The five-axis steering test equipment for the intelligent networked automobile according to claim 1, wherein each group of the steering drive assemblies (20) comprises:
the bracket (201) is a movable bracket so as to meet parameter structures of different vehicle steering systems;
a lateral drive mechanism (202) for providing a laterally applied force to effect a lateral displacement action;
a longitudinal driving mechanism (203) for providing a longitudinal applied force to effect a longitudinal displacement action;
and at least 4 actuating rod pieces for realizing the connection of the transverse driving mechanism (202) and the longitudinal driving mechanism (203) with the sample (40) to be measured.
3. The five-axis steering test equipment for the intelligent networked automobile according to claim 2, wherein the actuating rod pieces comprise a first actuating rod piece (204), a second actuating rod piece (205), a third actuating rod piece (206) and a fourth actuating rod piece (207), and adjacent actuating rod pieces are connected through a spherical hinge (50);
the first actuating rod piece (204) and the second actuating rod piece (205) are used for realizing transverse displacement action, and the third actuating rod piece (206) is used for realizing longitudinal displacement action.
4. The five-axis steering test equipment for the intelligent networked automobile according to claim 2, wherein the transverse driving mechanism (202) and the longitudinal driving mechanism (203) are respectively connected with the actuating rod piece through a guide bearing and a steering knuckle force arm.
5. The five-axis steering test equipment for the intelligent networked automobile according to claim 2, wherein a transmission force sensor (60) for monitoring transmission force is arranged at the joint of the transverse driving mechanism (202) and the actuating rod.
6. The five-axis steering test equipment for the intelligent networked automobile according to claim 2, wherein a plane thrust needle roller bearing (70) is arranged at the joint of the longitudinal driving mechanism (203) and the actuating rod piece, so that high axial load force can be obtained in a small space.
7. The five-axis steering test equipment for the intelligent networked automobile according to claim 2, wherein a pull rod force sensor (80) is arranged at the joint of the actuating rod piece and the tested sample (40) and used for collecting corresponding pull rod force.
8. The five-axis steering test equipment for the intelligent networked automobile according to claim 1, characterized in that the equipment further comprises an intelligent temperature control box (90) for performing high and low temperature tests on a tested sample (40), and the intelligent temperature control box (90) is provided with a visual display screen for displaying and recording the temperature in real time.
9. The five-axis steering test equipment for the intelligent networked automobile according to claim 1, wherein the base (10) is a T-shaped groove floor, and an air damper (101) is arranged below the base (10).
10. The intelligent networked automobile five-axis steering test equipment according to claim 1, further comprising:
an electrically driven cabinet providing a basic equipment power supply;
the HIL system cabinet is based on an NI PXI architecture, provides a vehicle dynamics simulation software platform by combining with a mainstream CARSIM (vehicle identification Module), and performs real-time data acquisition, monitoring and recording processing;
and the automatic measurement and control upper computer can display relevant parameters of equipment in real time and issue and receive relevant operation instructions in real time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010639361.6A CN111595602A (en) | 2020-07-06 | 2020-07-06 | Five-axis steering test equipment for intelligent networked automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010639361.6A CN111595602A (en) | 2020-07-06 | 2020-07-06 | Five-axis steering test equipment for intelligent networked automobile |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067321A (en) * | 2020-09-22 | 2020-12-11 | 湖北三环锻造有限公司 | Steering knuckle durability test method |
| CN113405708A (en) * | 2021-06-28 | 2021-09-17 | 北京理工大学 | Annular orthogonal torque chassis dynamometer for simulating automobile steering working condition |
| CN114152450A (en) * | 2021-11-15 | 2022-03-08 | 中汽创智科技有限公司 | Load simulation device and electromagnetic compatibility test system |
-
2020
- 2020-07-06 CN CN202010639361.6A patent/CN111595602A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067321A (en) * | 2020-09-22 | 2020-12-11 | 湖北三环锻造有限公司 | Steering knuckle durability test method |
| CN112067321B (en) * | 2020-09-22 | 2023-01-20 | 湖北三环锻造有限公司 | Steering knuckle durability test method |
| CN113405708A (en) * | 2021-06-28 | 2021-09-17 | 北京理工大学 | Annular orthogonal torque chassis dynamometer for simulating automobile steering working condition |
| CN114152450A (en) * | 2021-11-15 | 2022-03-08 | 中汽创智科技有限公司 | Load simulation device and electromagnetic compatibility test system |
| CN114152450B (en) * | 2021-11-15 | 2024-04-26 | 中汽创智科技有限公司 | Load simulation device and electromagnetic compatibility test system |
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