Vehicle simulation test device and vehicle simulation test method

Abstract

The invention provides a vehicle simulation test device and a vehicle simulation test method. The device comprises a first base, a second base and four dynamometers, the dynamometer comprises a lifting assembly, and a steering assembly, a roll assembly and a roller assembly which are arranged on the lifting assembly. The lifting assembly is used for lifting the steering assembly, the steering assembly is used for rotating the roll assembly, and the roll assembly is used for the roll roller assembly. Through the lifting assemblies which are arranged on the left side and the right side of the tested vehicle and have different heights and the side inclination angles of the side inclination assemblies which are adaptively adjusted according to the angles of the lifting assemblies on the left side and the right side of the tested vehicle, the driving conditions of the vehicle at the transverse gradient and wheel side inclination are simulated. Through the lifting assemblies which are arranged at the front end and the rear end of the tested vehicle and have different heights, the driving condition of the vehicle at the longitudinal slope is simulated; the roller assembly is driven through the steering assembly, and the driving condition of vehicle steering is simulated.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle testing, and particularly relates to a vehicle simulation test device and a vehicle simulation test method. Background Art

[0002] Chassis dynamometers and vehicle dynamic simulators are important test systems for testing and verifying the driving performance and vehicle dynamics of vehicles. Conventional chassis dynamometers for vehicles usually have various forms such as shaft-coupled type, drum type, and caterpillar type. Shaft-coupled dynamometers are usually used for testing the overall vehicle performance such as the overall vehicle cruising range, power performance, and functional safety of intelligent systems. Some shaft-coupled dynamometers have the function of simulating front-wheel steering; drum-type chassis dynamometers can usually simulate the longitudinal driving resistance of vehicles, but cannot simulate the vertical and lateral movements of vehicles, and are mainly used for testing conventional vehicle performances such as vehicle emissions, cruising range of new energy vehicles, acceleration performance, and vehicle durability; metal belt-type chassis dynamometers are rarely used in China due to technical difficulties and high prices. Existing chassis dynamometers for vehicles cannot simulate the driving conditions of vehicles on longitudinal slopes, lateral slopes, and wheel roll, which limits the application scenarios of chassis dynamometers for vehicles. Summary of the Invention

[0003] Aiming at the deficiencies of the existing technology, the present invention provides a vehicle simulation test device, aiming to simulate the driving conditions of vehicles on longitudinal slopes, lateral slopes, and wheel roll, and improve the application scenarios of the vehicle simulation test device.

[0004] In a first aspect, an embodiment of the present application provides a vehicle simulation test device, including:

[0005] A first base;

[0006] A second base; and

[0007] Four dynamometers, wherein two dynamometers are respectively arranged on the left and right sides of the first base, and the other two dynamometers are respectively arranged on the left and right sides of the second base;

[0008] Wherein, the dynamometer includes: a lifting component arranged on the first base or the second base, a steering component arranged on the lifting component, a roll component arranged on the steering component, and a roller component with a rotating shaft arranged on the roll component and having tires for carrying the vehicle; the lifting component is used for lifting the steering component, the steering component is used for rotating the roll component, and the roll component is used for rolling the roller component.

[0009] Optionally, it further includes a dynamic load simulator, which includes a load base and four groups of dynamic load simulation components hinged to the chassis of the vehicle. The dynamic load simulation components are respectively hinged to the front, rear, left, and right directions of the vehicle chassis.

[0010] Optionally, the dynamic load simulation component includes an electric servo actuator with one end hinged to the vehicle chassis and a force sensor with one end hinged to the load base and the other end fixedly connected to the other end of the electric servo actuator.

[0011] Optionally, the dynamic load simulator further includes at least two groups of dynamic load guide rails. The load base is slidably limited on the dynamic load guide rails through limiting grooves provided at the bottom of the load base, and at least three groups of load air support assemblies are provided at the bottom of the load base; the dynamic load guide rails are located above the adjustment component.

[0012] Optionally, the roll component includes two support members provided on the steering component, a first roll support shaft fixedly connected to one side of the roll component and rotatably connected to one support member, a second roll support shaft fixedly connected to the other side of the roll component and rotatably connected to the other support member, a roll ring gear fixedly connected to the second roll support shaft and perpendicular to the second roll support shaft, a roll motor fixed to the steering component, and a roll gear fixedly provided on the output shaft of the roll motor and meshing with the roll ring gear.

[0013] Optionally, the steering component includes: a steering wheel rotatably provided on the lifting component, a steering limiting member provided on the lifting component and used for limiting the steering wheel, a steering support plate provided above the steering wheel and fixedly connected to the steering wheel, a rotating ring gear fixedly provided on the steering support plate, a steering motor fixed to the lifting component, and a steering gear fixedly provided on the output shaft of the steering motor and meshing with the rotating ring gear;

[0014] Optionally, the support member is fixedly provided on the support plate; the rotating ring gear is fixedly provided on one side of the support plate, and the roll motor is fixed on the other side of the support plate;

[0015] Optionally, the support plate is fixedly provided on the steering wheel through a steering shaft. The steering limiting member is of an annular structure and includes a vertical limiting ring and a horizontal limiting ring located above the steering wheel.

[0016] Optionally, the lifting component includes: a lifting chute fixedly provided on the first base or the second base, a lifting slide rail provided above the lifting chute and slidably engaged with the lifting chute, a bearing plate, and an electric hydraulic cylinder; the lifting chute is located on the lower surface of the bearing plate, the upper end of the electric hydraulic cylinder is fixedly connected to the bearing plate, and the lower end of the electric hydraulic cylinder is fixedly connected to the first base or the second base;

[0017] Optionally, there are two lifting chutes, and the two lifting chutes are symmetrically arranged; there are two lifting slide rails, and the two lifting slide rails are symmetrically arranged.

[0018] Optionally, the roller assembly includes: a drum support, two drums rotatably disposed on the drum support specifically, and a tumbler motor fixedly disposed within the drum support; the tumbler motor is in driving connection with the two drums; both sides of the drum support are fixedly connected to the first roller support shaft and the second roller support shaft respectively.

[0019] Optionally, it further includes: at least two bearing members and an adjustment assembly; the first base is disposed on one side of the bearing member; the second base is disposed on the other side of the bearing member; the adjustment assembly is used to adjust the distance between the first base and the second base;

[0020] Optionally, the adjustment assembly includes: an axle distance adjustment lead screw fixedly connected to the first base at one end, and an axle distance lead screw motor fixedly disposed on one side of the second base, on the side of the axle distance lead screw motor close to the first base; the other end of the axle distance adjustment lead screw is connected to the axle distance lead screw motor;

[0021] Optionally, the bearing member is a guide rail, and three groups of base air support assemblies are respectively disposed on both sides of the bottom of the second base.

[0022] In a second aspect, an embodiment of the present application provides a vehicle simulation test method, and the vehicle simulation test method is applied to the vehicle simulation test device in the first aspect. The vehicle simulation test method includes:

[0023] Obtain virtual test field road information, vehicle simulated driving information, and load angle information;

[0024] Determine the longitudinal slope data, lateral slope data, driving resistance data, turning data, and inertial dynamic load data of the vehicle according to the virtual test field road information and the vehicle simulated driving information;

[0025] Control the steering assembly to run to the corresponding turning angle according to the turning data;

[0026] Control the dynamic load simulation assembly to run according to the inertial dynamic load data, driving resistance data, and load angle information, so that the inertial force feedback by the force sensor on the vehicle chassis plane is the same as the resultant force of the current inertial dynamic load data and driving resistance data;

[0027] Control the lifting assembly and the roll assembly to adjust the roller assembly according to the longitudinal slope data and the lateral slope data.

[0028] Optionally, controlling the dynamic load simulation assembly to run according to the inertial dynamic load data, driving resistance data, and load angle information, so that the inertial force feedback by the force sensor on the vehicle chassis plane is the same as the resultant force of the current inertial dynamic load data and driving resistance data, includes:

[0029] Determine the vehicle inertial force data according to the inertial dynamic load data and the driving resistance data;

[0030] Control the operation of the dynamic load simulation component according to the vehicle inertial force data and the load angle information, so that the inertial force feedback by the force sensor on the vehicle chassis plane is the same as the current vehicle inertial force data.

[0031] Optionally, control the lifting component and the roll component to adjust the roller component according to the longitudinal slope data and the lateral slope data, including:

[0032] Calculate the lifting data and the roll data according to the longitudinal slope data and the lateral slope data;

[0033] Control the lifting component and the roll component to adjust the roller component to the corresponding height and angle according to the lifting data and the roll data.

[0034] The beneficial effects of the embodiments of the present application compared with the prior art are:

[0035] By setting the lifting components at different heights on the left and right sides of the test vehicle and the roll angles of the roll components adjusted according to the angles of the lifting components on the left and right sides of the test vehicle, the present application can simulate the driving conditions of the vehicle on a lateral slope and wheel roll, and can simulate the driving conditions of a four-wheel steering vehicle on a lateral slope and wheel roll;

[0036] By setting the lifting components at different heights at the front and rear ends of the test vehicle, the present application can simulate the driving conditions of the vehicle on a longitudinal slope, and can also simulate the driving conditions of a four-wheel steering vehicle on a longitudinal slope;

[0037] By driving the roller component through the steering component, the present application can simulate the driving conditions of vehicle steering, and can simulate the steering driving conditions of a four-wheel steering vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0039] Figure 1 is a schematic structural diagram of a vehicle simulation test device provided by an embodiment of the present application;

[0040] Figure 2 is a schematic structural diagram of an adjustment component and a dynamometer provided by an embodiment of the present application;

[0041] Figure 3 is a schematic structural diagram of a dynamometer provided by an embodiment of the present application;

[0042] Figure 4It is a schematic structural diagram of a dynamic load simulation component provided by an embodiment of the present application;

[0043] Figure 5 It is another schematic structural diagram of a dynamic load simulation component provided by an embodiment of the present application;

[0044] Figure 6 It is a schematic flow diagram of the first embodiment of the vehicle simulation test method of the present invention.

[0045] Reference numerals:

[0046] 11, bearing member; 12, first base; 13, second base; 14, adjustment component; 141, wheelbase adjustment lead screw; 142, wheelbase lead screw motor; 15, load base; 151, load gas strut component; 16, dynamic load guide rail; 100, dynamometer; 2, lifting component; 21, lifting chute; 22, lifting slide rail; 23, bearing plate; 24, electric hydraulic cylinder; 3, steering component; 31, steering wheel; 32, steering limit member; 321, vertical limit ring; 322, horizontal limit ring; 33, steering support plate; 34, rotating gear ring; 35, steering motor; 36, steering gear; 37, steering shaft; 4, roll component; 41, support member; 42, first roller support shaft; 43, second roller support shaft; 44, roll gear ring; 45, roll motor; 46, roll gear; 5, roller component; 51, roller support; 52, roller; 53, drum motor; 6, vehicle; 61, tire; 7, dynamic load simulation component; 71, electric servo actuator; 72, force sensor. Detailed implementation manners

[0047] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present application.

[0048] It should be understood that when used in the specification and appended claims of the present application, the term "comprising" indicates the presence of the described features, wholes, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0049] It should also be understood that the term "and / or" as used in the specification and appended claims of the present application refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0050] As used in the specification of this application and the appended claims, the term "if" may be construed, depending on the context, as "when" or "once" or "in response to determining" or "in response to detecting". Similarly, the phrase "if determined" or "if [the described condition or event] is detected" may be construed, depending on the context, to mean "once determined" or "in response to determining" or "once [the described condition or event] is detected" or "in response to detecting [the described condition or event]".

[0051] In addition, in the description of the specification of this application and the appended claims, the terms "first", "second", "third", etc. are used only for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0052] The reference to "one embodiment" or "some embodiments" or the like described in the specification of this application means that a specific feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of this application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in another way. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized in another way.

[0053] As Figures 1 to 5 As shown, this embodiment provides a vehicle simulation test device, including: a first base 12, a second base 13, and four dynamometers; wherein, two dynamometers are respectively arranged on the left and right sides of the first base 12, and the other two dynamometers are respectively arranged on the left and right sides of the second base 13; wherein, the dynamometer includes: a lifting assembly 2 arranged on the first base 12 and / or the second base 13, a steering assembly 3 arranged on the lifting assembly, a roll assembly 4 arranged on the steering assembly 3, and a roller assembly 5 whose rotating shaft is arranged on the roll assembly 4 and has a tire 61 for carrying a vehicle 6; the lifting assembly 2 is used for lifting the steering assembly 3, the steering assembly 3 is used for rotating the roll assembly 4, and the roll assembly 4 is used for rolling the roller assembly 5.

[0054] By setting the lifting components 2 at different heights on the left and right sides of the test vehicle and adjusting the roll angle of the roll component 4 according to the angles of the lifting components 2 on the left and right sides of the test vehicle, it is possible to simulate the driving conditions of a vehicle on a lateral slope and with wheel roll, and it is also possible to simulate the driving conditions of a four-wheel steering vehicle on a lateral slope and with wheel roll; by setting the lifting components 2 at different heights at the front and rear ends of the test vehicle, it is possible to simulate the driving conditions of a vehicle on a longitudinal slope, and it is also possible to simulate the driving conditions of a four-wheel steering vehicle on a longitudinal slope; by driving the roller component 5 through the steering component 3, it is possible to simulate the driving conditions of a vehicle during steering, and it is also possible to simulate the steering driving conditions of a four-wheel steering vehicle; when it is necessary to simulate the test vehicle driving on a road surface with slopes in both the longitudinal and lateral directions, it is necessary to adaptively adjust the heights of the four lifting components 2 according to the height of the road surface and adaptively adjust the roll angle of the roll component 4 according to the inclination angle of the road surface, so that the bottoms of the four wheels of the simulated vehicle are adapted to the slope and height of the simulated road surface, and thus it is possible to simulate the driving conditions of the vehicle under longitudinal slope, lateral slope and wheel roll, and improve the usage scenarios of the vehicle simulation test device.

[0055] Specifically, as Figure 1 、 Figure 4 and Figure 5 shown, the vehicle simulation test device further includes a dynamic load simulator, which includes a load base 15 and four groups of dynamic load simulation components 7 hinged to the chassis of the vehicle. The dynamic load simulation components 7 are respectively hinged to the front, rear, left and right directions of the chassis of the vehicle 6. By the dynamic load simulation components 7 respectively hinged to the front, rear, left and right directions of the chassis of the vehicle 6, the vehicle inertial dynamic load of the vehicle 6 under acceleration and steering conditions can be obtained.

[0056] Specifically, as Figure 1 、 Figure 4 and Figure 5 shown, the dynamic load simulation component 7 includes an electric servo actuator 71 with one end hinged to the chassis of the vehicle 6 and a force sensor 72 with one end hinged to the load base 15 and the other end fixedly connected to the other end of the electric servo actuator 71. The load base 15 can be fixed to the ground through a load rack. Through the electric servo actuator 71 connected to the chassis of the vehicle 6 and the force sensor 72 connected to the electric servo actuator 71, the dynamic load of the vehicle can be feedback and the dynamic load in four directions of the vehicle can be accurately controlled.

[0057] Specifically, as Figure 1 、 Figure 4 and Figure 5As shown in the figure, in order to adjust the position of the load base 15 and the angle and relative position between the dynamic load simulation component 7 and the vehicle; the dynamic load simulator further includes at least two groups of dynamic load guide rails 16, and the load base 15 is slidably limited on the dynamic load guide rails 16 through the limit grooves provided at the bottom of the load base 15. At least three groups of load air support components 151 are provided at the bottom of the load base 15; the dynamic load guide rails 16 are located above the adjustment component 14. The limit grooves can limit the load base 15 on the dynamic load guide rails 16, and when the electric servo actuator 71 is enabled, the load base 15 will not leave the dynamic load guide rails 16 upward with the pulling force. Among them, the dynamic load guide rails 16 can be arranged above the adjustment component 14 through a load rack, and the load rack is fixed on the ground. Through the dynamic load guide rails 16, the load air support components 151 and the load base 15 that is in limit cooperation with the dynamic load guide rails 16, the angle and relative position between the dynamic load simulation component 7 and the vehicle can be adjusted according to the structure and length of the vehicle, so as to better simulate the vehicle inertial dynamic load of the vehicle 6 under acceleration and steering conditions.

[0058] Specifically, as Figures 1 to 3 shown, the roll component 4 includes two support members 41 provided on the steering component 3, a first roll support shaft 42 fixedly connected to one side of the roll component 5 and rotatably connected to one support member 41, a second roll support shaft 43 fixedly connected to the other side of the roll component 5 and rotatably connected to the other support member 41, a roll ring gear 44 fixedly connected to the second roll support shaft 43 and perpendicular to the second roll support shaft 43, a roll motor 45 fixed on the steering component 3, and a roll gear 46 fixedly provided on the output shaft of the roll motor 45 and meshing with the roll ring gear 44. By driving the roll gear 46 by the roll motor 45 to drive the second roll support shaft 43, the first roll support shaft 42 and the roll component 5 to rotate, the function of the roll component 5 to roll is realized, and thus the roll of the wheels of the vehicle 6 can be simulated.

[0059] Specifically, as Figures 1 to 3 shown, in order to reduce the friction force of the roll of the roll component 5, the first roll support shaft 42 and the second roll support shaft 43 are respectively rotatably connected to the support member 41 through a roll bearing 47.

[0060] Specifically, as Figures 1 to 3 shown, an actuating locking mechanism is installed on the first roll support shaft 42 and the second roll support shaft 43 to prevent the roll component 5, the first roll support shaft 42 and the second roll support shaft 43 from rotating freely when the vehicle drives onto the vehicle simulation test device.

[0061] Specifically, as Figures 1 to 3As shown in the figure, the steering assembly 3 includes: a steering wheel 31 rotatably arranged on the lifting assembly 2, a steering limiting member 32 arranged on the lifting assembly 2 and used for limiting the steering wheel 31, a steering support disk 33 arranged above the steering wheel 31 and fixedly connected to the steering wheel 31, a rotating gear ring 34 fixedly arranged on the steering support disk 33, a steering motor 35 fixedly arranged on the lifting assembly 2, and a steering gear 36 fixedly arranged on the output shaft of the steering motor 35 and meshing with the rotating gear ring 34. By driving the rotating gear ring 34 with the steering motor 35 to drive the steering wheel 31, the steering support disk 33, and the roll assembly 4 to rotate, the function of steering the roll assembly 5 can be realized, and thus the steering of the wheels of the vehicle 6 can be simulated.

[0062] Specifically, as Figures 1 to 3 shown in the figure, in order to facilitate the installation of the roll motor and the rotating gear ring, the support member 41 is fixedly arranged on the support disk 33; the rotating gear ring 34 is fixedly arranged on one side of the support disk 33, and the roll motor 45 is fixed on the other side of the support disk 33;

[0063] Specifically, as Figures 1 to 3 shown in the figure, in order to make the connection strength between the roll assembly 4 and the roll assembly 5 and the steering assembly 3 greater, so that the roll assembly 4 and the roll assembly 5 can operate more stably, the support disk 33 is fixedly arranged on the steering wheel 31 through the steering shaft 37. The steering limiting member 32 is of an annular structure, and the steering limiting member 32 includes a vertical limiting ring 321 and a horizontal limiting ring 322 located above the steering wheel. Among them, the vertical limiting ring 321 is a vertical cylindrical structure, and the horizontal limiting ring 322 is a horizontal annular structure with a certain width. The steering wheel 31 is rotationally limited within the vertical limiting ring 321 and the horizontal limiting ring 322.

[0064] Specifically, as Figures 1 to 3 shown in the figure, the lifting assembly 2 includes: a lifting chute 21 fixedly arranged on the first base 12 or the second base 13, a lifting slide rail 22 arranged above the lifting chute 21 and slidably matched with the lifting chute 21, a bearing plate 23, and an electric hydraulic cylinder 24; the lifting chute 21 is located on the lower surface of the bearing plate 23, the upper end of the electric hydraulic cylinder 24 is fixedly connected to the bearing plate 23, and the lower end of the electric hydraulic cylinder 24 is fixedly connected to the first base 12 or the second base 13; by the cooperation of the lifting chute 21 and the lifting slide rail 22 and the drive of the electric hydraulic cylinder 24, the bearing plate 23 can be lifted, and the vertical movement of the roll assembly 5 can be realized.

[0065] Specifically, as Figures 1 to 3 shown in the figure, the steering wheel 31 is arranged on the upper surface of the bearing plate 23; the steering limiting member 32 is fixed on the upper surface of the bearing plate 23; through the combined action of the vertical limiting ring 321, the horizontal limiting ring 322, and the bearing plate 23, the steering wheel 31 can be rotationally limited between the vertical limiting ring 321, the horizontal limiting ring 322, and the bearing plate 23.

[0066] Specifically, as Figures 1 to 3 shown, in order to more stably control the lifting of the steering component 3, there are two lifting chutes 21, and the two lifting chutes 21 are symmetrically arranged; there are two lifting slide rails 22, and the two lifting slide rails 22 are symmetrically arranged.

[0067] As another embodiment, as Figures 1 to 3 shown, the lifting chute 21 can be a vertically arranged annular chute, and the lifting slide rail 22 is a vertically arranged annular slide rail; by cooperating with the vertically arranged annular chute and the vertically arranged annular slide rail, the lifting of the steering component 3 can be more stably controlled.

[0068] Specifically, as Figures 1 to 3 shown, in order to facilitate the simulation of vehicle acceleration, deceleration, and uniform running, the roller assembly 5 includes: a roller support 51, two rollers 52 rotatably arranged on the roller support 51, and a drum motor 53 fixedly arranged in the roller support 51; the drum motor 53 is in transmission connection with the two rollers 52; the drum motor 53 and the two rollers 52 can be in transmission connection through belts, chains, gears, etc.; both sides of the roller support 51 are fixedly connected to the first roller support shaft 42 and the second roller support shaft 43 respectively.

[0069] Specifically, as Figures 1 to 3 shown, in order to facilitate the adjustment of the distance between the first base 12 and the second base 13, and further adjust the distance between the front and rear roller assemblies 5, so as to perform simulation tests on vehicles with different wheelbases, the vehicle simulation test device further includes: at least two bearing members 11 and an adjustment assembly 14; the first base 12 is fixedly arranged on one side of the bearing member 11; the second base 13 is slidably arranged on the other side of the bearing member 11; the adjustment assembly 14 is used to adjust the distance between the first base 12 and the second base 13; in this application, the adjustment assembly 14 and the bearing member 11 cooperate to adjust the distance between the first base 12 and the second base 13, and further adjust the distance between the front two dynamometers and the rear two dynamometers, so as to realize the simulation test on vehicles with different wheelbases.

[0070] As another implementation manner, the first base 12 is slidably arranged on one side of the bearing member 11; the second base 13 is fixedly arranged on the other side of the bearing member 11.

[0071] As another implementation manner, the first base 12 is slidably arranged on one side of the bearing member 11; the second base 13 is slidably arranged on the other side of the bearing member 11.

[0072] Specifically, as Figures 1 to 3As shown in the figure, in order to make the distance adjustment between the front and rear roller assemblies 5 more convenient, the adjustment assembly 14 includes: an axle distance adjustment lead screw 141 fixedly connected to the first base 12 at one end, and an axle distance lead screw motor 142 fixedly arranged on one side of the second base 13, on the side of the axle distance lead screw motor 142 close to the first base 12; the other end of the axle distance adjustment lead screw 141 is connected to the axle distance lead screw motor 142;

[0073] Specifically, as Figures 1 to 3 shown, in order to reduce the friction between the second base 13 and the bearing member 11 and make the distance adjustment between the front and rear roller assemblies 5 more convenient, the bearing member 11 is a guide rail, and three groups of base air support assemblies 131 are respectively arranged on both sides of the bottom of the second base 13.

[0074] The working principle of Embodiment 1 will be described in detail below:

[0075] When it is necessary to simulate a vehicle, the four wheels of the vehicle can be driven onto the roller assemblies 5 of the four dynamometers respectively. When it is necessary to conduct an acceleration or deceleration test on the vehicle, the acceleration or deceleration of the drum motor 53 can be controlled, and then the belt can be driven to accelerate and decelerate between the drum motor 53 and the two drums 52 by the drum motor 53. When it is necessary to conduct a turning test on the vehicle, the movement of 2 steering motors 35 or the operation of four steering motors 35 can be adjusted. Then, the steering motor 35 can drive the steering gear 36 to rotate, and then the steering gear 36 drives the rotating gear ring 34, the support disk 33 and the steering wheel 31 to rotate. Then, the roller assembly 5 is driven to rotate through the roll assembly 4. When it is necessary to conduct tests on the longitudinal slope and transverse slope of the vehicle, 1, 2, 3 or 4 of the 4 electric hydraulic cylinders 24 can be adjusted. Then, the electric hydraulic cylinder 24 can drive the bearing disk 23 to lift, and then the bearing disk 23 drives the steering assembly 3, the roll assembly 4 and the roller assembly 5 to lift. The tires of the vehicle 6 will change with the changes of the longitudinal slope and transverse slope, and the angle between the tires and the horizontal plane will also change. Therefore, when it is necessary to simulate the vehicle driving on the longitudinal slope and transverse slope, the angle of the tires of the vehicle 6 relative to the horizontal plane also needs to be simulated; therefore, when it is necessary to conduct tests on the longitudinal slope and transverse slope of the vehicle 6, the operation of the 4 roll motors 45 can be controlled. The roll motor 45 drives the roll gear 46 to drive the roll gear ring 44, the second roller support shaft 43, the first roller support shaft 42 and the roller assembly 5 arranged between the second roller support shaft 43 and the first roller support shaft 42 to roll, thereby realizing the simulation of the roll of the vehicle 6 tires.

[0076] The present invention also provides a vehicle simulation test method applied to the vehicle simulation test device in the above embodiments. Refer to Figure 6 , Figure 6This is a schematic flowchart of the vehicle simulation test method of the present invention. The vehicle simulation test method is applied to a vehicle simulation test device. The vehicle simulation test method can be applied to the vehicle simulation test device, and the vehicle simulation test method can be applied to the controller of the vehicle simulation test device, where the controller is electrically connected to an electric servo actuator 71, a force sensor 72, a load gas strut assembly 151, a roll motor 45, a steering motor 35, an electric hydraulic cylinder 24, a drum motor 53, a wheelbase lead screw motor 142, and a base gas strut assembly 131 respectively.

[0077] In this embodiment, the vehicle simulation test method includes:

[0078] S10. Obtain virtual test field road information, vehicle simulated driving information, and load angle information;

[0079] In this implementation, to facilitate the simulation test of the vehicle, the vehicle simulation test device or the controller obtains virtual test field road information, vehicle simulated driving information, and load angle information. Among them, the virtual test field road information is the route and height information of the virtual experimental road; the vehicle simulated driving information is the driving information data during vehicle simulation; the load angle information is the angle between the electric servo actuator 71 and the ground.

[0080] S20. Determine the longitudinal slope data, lateral slope data, driving resistance data, turning data, and inertial dynamic load data of the vehicle according to the virtual test field road information and the vehicle simulated driving information;

[0081] In this embodiment, after the vehicle simulation test device or the controller obtains the virtual test field road information and the vehicle simulated driving information, it determines the longitudinal slope data, lateral slope data, driving resistance data, turning data, and inertial dynamic load data of the vehicle according to the virtual test field road information and the vehicle simulated driving information; among them, the inertial dynamic load data is the inertial load of the vehicle under acceleration and turning conditions.

[0082] S30. Control the steering assembly 3 to run to the corresponding turning angle according to the turning data;

[0083] In this embodiment, after the vehicle simulation test device or the controller obtains the turning data, it controls the steering motor 35 to run to drive the steering assembly 3 to move to the corresponding turning angle according to the turning data.

[0084] S40. Control the dynamic load simulation assembly 7 to run according to the inertial dynamic load data, the driving resistance data, and the load angle information, so that the inertial force of the force sensor feedback on the vehicle chassis plane is the same as the resultant force of the current inertial dynamic load data and the driving resistance data;

[0085] In this embodiment, after the vehicle simulation test device or the controller obtains the inertial dynamic load data, the driving resistance data, and the load angle information, it controls the operation of the electric servo actuator 71 to drive the dynamic load simulation component 7 according to the inertial dynamic load data, the driving resistance data, and the load angle information, so that the inertial force feedback by the force sensor on the vehicle chassis plane is the same as the resultant force of the current inertial dynamic load data and the driving resistance data;

[0086] S50, control the lifting component 2 and the roll component 4 to adjust the roller component 5 according to the longitudinal slope data and the lateral slope data.

[0087] In this embodiment, after the vehicle simulation test device or the controller obtains the longitudinal slope data and the lateral slope data, it controls the operation of the electric hydraulic cylinder 24 to drive the lifting component 2 to lift and lower, and controls the operation of the roll motor 45 to drive the roll component 4 to roll according to the longitudinal slope data and the lateral slope data, so as to adjust the roller component 5 to the required position and direction for simulation.

[0088] Specifically, controlling the operation of the dynamic load simulation component 7 according to the inertial dynamic load data, the driving resistance data, and the load angle information, so that the inertial force feedback by the force sensor on the vehicle chassis plane is the same as the resultant force of the current inertial dynamic load data and the driving resistance data, may include:

[0089] Determine the vehicle inertial force data according to the inertial dynamic load data and the driving resistance data; control the operation of the dynamic load simulation component 7 according to the vehicle inertial force data and the load angle information, so that the inertial force feedback by the force sensor on the vehicle chassis plane is the same as the current vehicle inertial force data.

[0090] In this embodiment, after the vehicle simulation test device or the controller obtains the virtual test field road information and the vehicle simulation driving information, it determines the vehicle inertial force data according to the inertial dynamic load data and the driving resistance data; controls the operation of the electric servo actuator 71 to drive the dynamic load simulation component 7 according to the vehicle inertial force data and the load angle information, so that the inertial force feedback by the force sensor on the vehicle chassis plane is the same as the current vehicle inertial force data.

[0091] Specifically, controlling the lifting component 2 and the roll component 4 to adjust the roller component 5 according to the longitudinal slope data and the lateral slope data includes:

[0092] Calculate the lifting data and the roll data according to the longitudinal slope data and the lateral slope data; control the lifting component 2 and the roll component 4 to adjust the roller component 5 to the corresponding height and angle according to the lifting data and the roll data.

[0093] In this embodiment, after the vehicle simulation test device or controller obtains the longitudinal slope data and the lateral slope data, it calculates the lifting data and the roll data according to the longitudinal slope data and the lateral slope data; and drives the lifting assembly 2 to lift by controlling the operation of the electric hydraulic cylinder 24, and drives the roll assembly 4 to roll by controlling the operation of the roll motor 45 according to the lifting data and the roll data, thereby driving the roller assembly 5 to the corresponding height and angle.

[0094] The present invention obtains the virtual test field road information, the vehicle simulation driving information, and the load angle information; determines the longitudinal slope data, the lateral slope data, the driving resistance data, the turning data, and the inertial dynamic load data of the vehicle according to the virtual test field road information and the vehicle simulation driving information; controls the steering assembly 3 to run to the corresponding turning angle according to the turning data; controls the dynamic load simulation assembly 7 to run according to the inertial dynamic load data, the driving resistance data, and the load angle information, so that the inertial force of the force sensor feedback on the vehicle chassis plane is the same as the resultant force of the current inertial dynamic load data and the driving resistance data; controls the lifting assembly 2 and the roll assembly 4 to adjust the roller assembly 5 according to the longitudinal slope data and the lateral slope data, which can realize simulating the slope operation and turning operation of the vehicle and simulating the actual inertial loads of each wheel under the conditions of vehicle acceleration, braking, and steering, enriching the usage scenarios of vehicle simulation tests; and can make the vehicle operation in the laboratory basically consistent with the actual road driving state.

[0095] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A vehicle simulation test device, characterized in that, Including: A first base (12); A second base (13); And Four dynamometers (100), wherein, two of the dynamometers (100) are respectively arranged on the left and right sides of the first base (12), and the other two dynamometers (100) are respectively arranged on the left and right sides of the second base (13); Wherein, the dynamometer (100) includes: a lifting component (2) arranged on the first base (12) and / or the second base (13), a steering component (3) arranged on the lifting component, a roll component (4) arranged on the steering component (3), and a roller component (5) whose rotating shaft is arranged on the roll component (4) and has a tire (61) for carrying a vehicle (6); the lifting component (2) is used for lifting the steering component (3), the steering component (3) is used for rotating the roll component (4), and the roll component (4) is used for rolling the roller component (5).

2. The vehicle simulation test device according to claim 1, characterized in that It further includes a dynamic load simulator, the dynamic load simulator includes a load base (15) and four groups of dynamic load simulation components (7) hinged to the chassis of the vehicle, and the dynamic load simulation components (7) are respectively hinged to the front, rear, left and right four directions of the vehicle chassis.

3. The vehicle simulation test device according to claim 2, wherein The dynamic load simulation component (7) includes an electric servo actuator (71) whose one end is hinged to the chassis of the vehicle (6) and a force sensor (72) whose one end is hinged to the load base (15) and the other end is fixedly connected to the other end of the electric servo actuator (71).

4. The vehicle simulation test device according to claim 2, characterized in that The dynamic load simulator further includes at least two groups of dynamic load guide rails (16), the load base (15) is slidably limited on the dynamic load guide rails (16) through a limiting groove arranged at the bottom of the load base (15), and at least three groups of load air support components (151) are arranged at the bottom of the load base (15).

5. The vehicle simulation test device according to any one of claims 1 to 4, characterized in that The roll component (4) includes two support members (41) arranged on the steering component (3), a first roller support shaft (42) fixedly connected to one side of the roller component (5) and rotatably connected to one of the support members (41), a second roller support shaft (43) fixedly connected to the other side of the roller component (5) and rotatably connected to the other support member (41), a roll gear ring (44) fixedly connected to the second roller support shaft (43) and perpendicular to the second roller support shaft (43), a roll motor (45) fixed on the steering component (3), and a roll gear (46) fixed on the output shaft of the roll motor (45) and meshing with the roll gear ring (44).

6. The vehicle simulation test device according to claim 5, characterized in that, The steering assembly (3) comprises: a steering wheel (31) rotatably arranged on the lifting assembly (2), a steering stopper (32) arranged on the lifting assembly (2) and used to limit the steering wheel (31), a steering support plate (33) arranged above the steering wheel (31) and fixedly connected to the steering wheel (31), a rotating ring gear (34) fixedly arranged on the steering support plate (33), a steering motor (35) fixedly arranged on the lifting assembly (2), and a steering gear (36) fixedly arranged on the output shaft of the steering motor (35) and meshing with the rotating ring gear (34); Alternatively, the support member (41) is fixedly disposed on the support plate (33); the rotating ring gear (34) is fixedly disposed on one side of the support plate (33), and the roll motor (45) is fixedly disposed on the other side of the support plate (33); Alternatively, the support plate (33) is fixedly arranged on the steering wheel (31) via the steering shaft (37); the steering limiter (32) is an annular structure; and the steering limiter (32) comprises a vertical limit ring (321) and a transverse limit ring (322) located above the steering wheel.

7. The vehicle simulation test device according to claim 5, characterized in that, The lifting assembly (2) comprises: a lifting slot (21) fixedly arranged on the first base (12) or the second base (13), a lifting rail (22) arranged above the lifting slot (21) and slidingly matched with the lifting slot (21), a bearing plate (23) and an electric hydraulic cylinder (24); the lifting slot (21) is located on the lower surface of the bearing plate (23), the upper end of the electric hydraulic cylinder (24) is fixedly connected to the bearing plate (23), and the lower end of the electric hydraulic cylinder (24) is fixedly connected to the first base (12) or the second base (13); Or, there are two lifting slide grooves (21), and the two lifting slide grooves (21) are symmetrically arranged; there are two lifting slide rails (22), and the two lifting slide rails (22) are symmetrically arranged; Alternatively, the roller assembly (5) comprises: a roller support (51), two rollers (52) rotatably arranged on the roller support (51), and a drum motor (53) fixedly arranged in the roller support (51); the drum motor (53) is transmission-connected to the two rollers (52); and the two sides of the roller support (51) are fixedly connected to the first roller support shaft (42) and the second roller support shaft (43), respectively.

8. The vehicle simulation test device according to claim 5, characterized in that , and further comprising: at least two supporting members (11) and an adjusting assembly (14); the first base (12) is arranged on one side of the supporting member (11); the second base (13) is arranged on the other side of the supporting member (11); the adjusting assembly (14) is used to adjust the distance between the first base (12) and the second base (13); Alternatively, the adjustment assembly (14) includes: an axle distance adjustment lead screw (141) with one end fixedly connected to the first base (12), and an axle distance lead screw motor (142) fixedly arranged on one side of the second base (13), on the side of the axle distance lead screw motor (142) close to the first base (12); the other end of the axle distance adjustment lead screw (141) is connected to the axle distance lead screw motor (142). Alternatively, the bearing member (11) is a guide rail, and three groups of base air support assemblies (131) are respectively arranged on both sides of the bottom of the second base (13).

9. A vehicle simulation test method, characterized in that, The vehicle simulation test method is applied to the vehicle simulation test device according to any one of claims 1 to 8, and the vehicle simulation test method includes: Obtaining virtual test field road information, vehicle simulation driving information, and load angle information; Determining the longitudinal slope data, lateral slope data, driving resistance data, turning data, and inertial dynamic load data of the vehicle according to the virtual test field road information and vehicle simulation driving information; Controlling the steering assembly (3) to run to the corresponding turning angle according to the turning data; Controlling the dynamic load simulation assembly (7) to run according to the inertial dynamic load data, driving resistance data, and load angle information, so that the inertial force feedback by the force sensor on the vehicle chassis plane is the same as the resultant force of the current inertial dynamic load data and driving resistance data; Controlling the lifting assembly (2) and the roll assembly (4) to adjust the roller assembly (5) according to the longitudinal slope data and lateral slope data.

10. The vehicle simulation test device according to claim 9, characterized in that, Controlling the dynamic load simulation assembly (7) to run according to the inertial dynamic load data, driving resistance data, and load angle information, so that the inertial force feedback by the force sensor on the vehicle chassis plane is the same as the resultant force of the current inertial dynamic load data and driving resistance data, including: Determining the vehicle inertial force data according to the inertial dynamic load data and driving resistance data; Controlling the dynamic load simulation assembly (7) to run according to the vehicle inertial force data and load angle information, so that the inertial force feedback by the force sensor on the vehicle chassis plane is the same as the current vehicle inertial force data; Alternatively, the controlling the lifting assembly (2) and the roll assembly (4) to adjust the roller assembly (5) according to the longitudinal slope data and lateral slope data includes: Calculating the lifting data and roll data according to the longitudinal slope data and lateral slope data; Controlling the lifting assembly (2) and the roll assembly (4) to adjust the roller assembly (5) to the corresponding height and angle according to the lifting data and roll data.

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