WO2018110118A1

WO2018110118A1 - Vehicle test system, control device for vehicle test system, control method for vehicle test system, and program for vehicle test system

Info

Publication number: WO2018110118A1
Application number: PCT/JP2017/038864
Authority: WO
Inventors: 将阿部; 峰之駒田; 浩之池田
Original assignee: 株式会社堀場製作所
Priority date: 2016-12-15
Filing date: 2017-10-27
Publication date: 2018-06-21
Also published as: JP7103951B2; JPWO2018110118A1

Abstract

The present invention makes it possible to perform simulated travel while recognizing a road surface state, and to evaluate the performance of a vehicle or a portion thereof more correctly than by the prior art. A vehicle test system 100 provided with a steering wheel operation amount inputting unit 51a for inputting a steering wheel operation amount corresponding to a vehicle steering wheel operation, an accelerator operation amount inputting unit 51b for inputting an accelerator operation amount corresponding to a vehicle accelerator operation, and a brake operation amount inputting unit 51c for inputting a brake operation amount corresponding to a vehicle brake operation, the vehicle test system 100 for testing a vehicle or a portion thereof as a test piece using the operation amount inputting units 51a-c, wherein the vehicle test system 100 is configured so as to be provided with a load device 2 for imparting a load to the test piece, a display unit 61 for displaying a travel course in a display DS so that road surface information including a road surface slope and/or information relating to the frictional coefficient of the road surface is visible, and a control unit 54 for calculating a travel resistance using the operation amounts and road surface information of the travel road surface displayed in the display DS and controlling the load device 2 on the basis of the travel resistance.

Description

Vehicle test system, vehicle test system control device, vehicle test system control method, and vehicle test system program

The present invention relates to a vehicle test system, a vehicle test system control device, a vehicle test system control method, and a vehicle test system program.

Conventionally, a vehicle test system includes a dynamometer that applies a load to a vehicle and a part of the vehicle, and a simulator that includes a steering wheel, an accelerator pedal, and the like that simulate a real product. With this configuration, by simulating a virtual vehicle (hereinafter referred to as a virtual vehicle) on a predetermined traveling course using a simulator, and changing the load on the dynamometer based on the traveling resistance at that time, The performance of the vehicle and parts of it can be tested.

As such a vehicle test system, the one disclosed in Patent Document 1 projects a scene imitating a screen provided in front of a test driver's eyes, and moves the image according to the traveling speed of the virtual vehicle. Therefore, the vehicle can be simulated while directly feeling the acceleration of the vehicle.

However, this vehicle test system only makes it possible to experience the acceleration feeling of the vehicle, and for example, the screen image is approaching a slope, the road surface is slippery, and there is a puddle. The road surface condition is not reflected.
Because of this, the test driver must run a simulation without recognizing the road surface condition, so the simulator will be operated with a sense different from actual driving, such as when approaching a slope, and the same driving course is simulated. In such a case, the reproducibility may be low, and there may be a problem that the performance of the vehicle or a part thereof cannot be correctly evaluated.

Japanese Patent Laid-Open No. 10-104126

Therefore, the main object of the present invention is to enable the vehicle to perform a simulation while recognizing the road surface condition so that the performance of the vehicle and a part of the vehicle can be evaluated more correctly than before.

That is, the vehicle test system according to the present invention includes a handle operation amount input unit for inputting a handle operation amount corresponding to a vehicle handle operation, and an accelerator operation amount for inputting an accelerator operation amount corresponding to the accelerator operation of the vehicle. An input unit and a brake operation amount input unit for inputting a brake operation amount corresponding to the brake operation of the vehicle are provided, so that the traveling course displayed on the display can be simulated using the operation amount input units. The vehicle test system is configured to be able to visually recognize a load device that applies a load to a vehicle that is a specimen or a part thereof, and road surface information that includes at least one of information on a friction coefficient of the road surface or a gradient of the road surface. A display unit for displaying the traveling course on a display; the steering wheel operation amount; the accelerator operation amount; or the brake operation amount. And a control unit that calculates a running resistance using at least one operation amount and the road surface information displayed by the display unit, and controls the load device based on the running resistance. Is.

In such a vehicle test system, since the display unit displays the traveling course so that the information on the friction coefficient of the road surface and the gradient of the road surface can be visually recognized, the test driver can perform a simulated traveling while recognizing the road surface state. . This makes it possible for test drivers to operate the simulator as if they were actually driving using their sensibility and experience, improving the reproducibility when driving on the same driving course, And a part of the performance can be evaluated more correctly than before.

The vehicle test system further includes an operation amount storage unit that stores each operation amount input to the steering wheel operation amount input unit, the accelerator operation amount input unit, and the brake operation amount input unit in time series, and the control unit However, it is preferable to control the load device based on each operation amount stored in the operation amount storage unit.
With such a configuration, it becomes possible to reproduce the simulated running of the test driver, and the reproducibility of the running test can be further improved.

In the vehicle test system, an operation amount storage unit that stores each operation amount input to the steering wheel operation amount input unit, the accelerator operation amount input unit, and the brake operation amount input unit in time series, and the operation amount storage unit It is preferable to further include an output unit that outputs each stored operation amount as data usable in the bench test.
With such a configuration, for example, in a performance test performed by placing the completed vehicle on a chassis dynamometer, the operation amount stored in the operation amount storage unit is transmitted to, for example, an automatic driving device mounted on the completed vehicle. Thus, the simulated driving of the user can be reproduced on the chassis dynamometer.

In order to make the driving sensation of the simulated driving closer to the actual driving sensation, the display unit responds to each operation amount input to the steering wheel operation amount input unit, the accelerator operation amount input unit, and the brake operation amount input unit. It is preferable to display a virtual vehicle traveling on the traveling course on the display.

In order to synchronize the behavior of the specimen and the behavior of the virtual vehicle, the traveling state of the virtual vehicle displayed by the display unit may change according to the load applied to the specimen from the load device. preferable.

In order to be able to input driving conditions with the same feeling as an actual vehicle, the steering wheel operation amount input unit has a steering wheel, and the accelerator operation amount input unit has an accelerator pedal. The brake operation amount input section preferably has a brake pedal.

When the specimen has a manual mission (manual transmission), it is preferable to further include a clutch operation amount input unit for inputting a clutch operation amount corresponding to the clutch operation of the vehicle.

For example, when traveling on a curve, a rotational speed difference or a torque difference occurs between the left and right wheels or between the front and rear wheels.
Therefore, in order to reproduce the difference in rotational speed and torque generated when traveling on the displayed traveling road surface, the road surface information displayed by the display unit includes the left and right wheels or the front and rear wheels of the specimen. The first load device is connected to the first output shaft to which one of the left and right wheels of the specimen or one of the front and rear wheels is connected. A second load device is connected to the second output shaft to which the other or the other of the front and rear wheels is connected, and the control section sets the road surface information set independently for the two wheels, and It is preferable to control the first load device and the second load device to simulate a difference in rotational speed and / or torque generated between the two wheels based on the steering wheel operation amounts.

By the way, when this type of vehicle test system is used to simulate a virtual vehicle according to a prescribed speed pattern defined by laws and regulations, for example, the test driver runs mainly from a change in the running course displayed on the display. You will feel the speed of the virtual vehicle. However, it is difficult to sufficiently sense a real sense of speed as if an actual vehicle is being driven only by visual information obtained from video displayed on the display. Therefore, even though the test driver intends to run the virtual vehicle in a simulated manner so as to follow the prescribed speed pattern, the driver is driving at a speed higher than expected (or lower than expected) without knowing it. There is a risk of driving in a pattern.

In order to solve such a problem, the vehicle test system further includes a blower that can change the wind speed, and the control unit changes the wind speed according to the vehicle speed of the virtual vehicle traveling on the travel course. As long as it controls the blower.

With such a configuration, since the wind speed changes according to the vehicle speed of the virtual vehicle, the test driver can make a simulated run while feeling a sense of speed through touch as well as vision. As a result, the test driver can operate the simulator as if actually driving the vehicle. Therefore, it is possible to effectively prevent an operation that deviates from the specified speed pattern without knowing it. Furthermore, the reproducibility in the case where the same traveling course is simulated can be further improved, and the performance of the vehicle and part thereof can be more accurately evaluated.

In this case, it is preferable that the control unit controls the blower so that a change rate of the wind speed changes according to a difference between the vehicle speed and a predetermined target speed of the virtual vehicle.
With such a configuration, for example, when the vehicle speed deviates from a predetermined speed range, the wind speed changes suddenly with respect to the change in the vehicle speed, so the test driver immediately notices that and the speed of the virtual vehicle is predetermined. It can be modified immediately to fit within the range.

The control device for a vehicle test system according to the present invention inputs a handle operation amount input unit for inputting a handle operation amount corresponding to a vehicle handle operation, and an accelerator operation amount corresponding to an accelerator operation of the vehicle. Road surface information including at least one of information relating to a friction coefficient of the road surface or a gradient of the road surface, and an accelerator operation amount input unit of the vehicle and a brake operation amount input unit for inputting a brake operation amount corresponding to the brake operation of the vehicle In a control device used in a vehicle test system configured to display the travel course on the display so that the vehicle can be simulated using the operation amount input units, the handle operation amount, the accelerator The operation amount or at least one operation amount of the brake operation amount, and the road surface information displayed on the display There calculates the running resistance, and is characterized in that for controlling the load device based on the running resistance

Furthermore, the vehicle test system control method according to the present invention includes a handle operation amount input unit for inputting a handle operation amount corresponding to a vehicle handle operation, and an accelerator operation amount corresponding to an accelerator operation of the vehicle. An accelerator operation amount input unit and a brake operation amount input unit for inputting a brake operation amount corresponding to a brake operation of the vehicle, and road surface information including at least one of information on a friction coefficient of the road surface or a gradient of the road surface In the control method of the vehicle test system configured to display the traveling course so that it can be visually recognized and to perform simulated traveling using the operation amount input units, the steering wheel operation amount, the accelerator operation amount, or Travel using at least one operation amount of the brake operation amount and the road surface information displayed on the display Calculating anti the a method characterized by controlling the load device based on the running resistance.

In addition, the program for a vehicle test system according to the present invention inputs a handle operation amount input unit for inputting a handle operation amount corresponding to a vehicle handle operation, and an accelerator operation amount corresponding to an accelerator operation of the vehicle. Road surface information including at least one of information relating to a friction coefficient of the road surface or a gradient of the road surface, and an accelerator operation amount input unit of the vehicle and a brake operation amount input unit for inputting a brake operation amount corresponding to the brake operation of the vehicle In the program used in the vehicle test system configured to display the traveling course on the display so that the vehicle can be simulated using the operation amount input units, the steering wheel operation amount and the accelerator operation amount are displayed. Or at least one of the brake operation amounts, and the road displayed on the display Calculating a running resistance by using the information, a program for causing a function as a control unit for controlling the load device to a computer based on the running resistance.

Such a vehicle test system control device, a vehicle test system control method, and a vehicle test system program can exhibit the same effects as the vehicle test system described above.

According to the present invention configured as described above, simulation driving can be performed while recognizing the road surface state, and the test driver can operate the simulator as if he / she is actually driving utilizing his sensitivity and experience. The reproducibility of the simulated driving is improved, and the performance of the vehicle and part thereof can be evaluated more correctly than before.

The schematic diagram which shows the whole structure of the vehicle test system of this embodiment. The functional block diagram which shows the function of the information processing apparatus of the embodiment. The figure which shows the display content by the display apparatus of the embodiment. The figure which shows the display content by the display apparatus of the embodiment. The functional block diagram which shows the function of the information processing apparatus of other embodiment. The figure which shows the display content by the display apparatus of other embodiment. The functional block diagram which shows the function of the information processing apparatus of other embodiment. The schematic diagram which shows the structure of the control room of other embodiment. The graph which shows the relationship between the vehicle speed of the virtual vehicle of other embodiment, and the wind speed of an air blower. The graph which shows the relationship between the vehicle speed of the virtual vehicle of other embodiment, and the wind speed of an air blower. The graph which shows the relationship between the vehicle speed of the virtual vehicle of other embodiment, and the wind speed of an air blower. The graph which shows the relationship between the vehicle speed of the virtual vehicle of other embodiment, and the wind speed of an air blower.

DESCRIPTION OF SYMBOLS 100 ... Vehicle test system 51a ... Steering wheel operation amount input part 51b ... Accelerator operation amount input part 51c ... Brake operation

amount input part

2, 3 ... Load apparatus 54 ... Control part 61 ..Display section

Hereinafter, an embodiment of a vehicle test system according to the present invention will be described with reference to the drawings.

The vehicle test system 100 of this embodiment is for testing the performance of a power train (also referred to as a drive line) such as a transmission (manual, automatic or CVT), a differential gear, an axle, a drive shaft, etc. FIG. As shown in FIG. 3, the virtual vehicle and the traveling course in which the vehicle is virtual are displayed on the display DS, and the virtual vehicle can be simulated on the traveling course.

Here, the powertrain performance test includes gear change / gear sync test, automatic transmission shift calibration, main components (clutch, torque converter, differential gear, power unit, damper, electronic control unit, suspension, exhaust system). This includes checks, durability tests / lifetime tests for drive systems and drive system components, noise / vibration tests, performance / efficiency tests, functional tests, and the like.

Specifically, as shown in FIG. 1, the vehicle test system 100 includes a first load device 2 and a second load device 3 respectively connected to the first output shaft PT1 and the second output shaft PT2 of the power train PT, Drive device 4 connected to the input side of powertrain PT (specifically, input shaft TM1 of transmission TM), control device 5 for controlling each of

load devices

2, 3 and drive device 4, virtual vehicle and travel And a display device 6 for displaying the course on the display. In the following, a test apparatus for a powertrain PT having an automatic transmission or a CVT will be described. In addition, the power train PT, each

load device

2, 3 and the drive device 4, which are specimens, are arranged in a test room, and the control device 5 and the display device 6 are arranged in a control room different from the test room. ing.

The first load device 2 and the second load device 3 simulate running resistance acting on the wheels connected to the output shafts PT1 and PT2, and are absorption dynamometers (hereinafter referred to as the first absorption when distinguished from each other). Dynamometer 2 and second absorption dynamometer 3). Here, the two output shafts PT1 and PT2 are shafts coupled to each other by a differential gear DF, and one of the left and right wheels is connected to the first output shaft PT1, and the second output shaft The other of the left and right wheels is connected to PT2. The drive device 4 simulates the behavior of the engine and is composed of a drive dynamometer.

The control device 5 controls the first absorption dynamometer 2, the second absorption dynamometer 3, and the driving dynamometer 4 under predetermined test conditions. As shown in FIG. An input unit 51 that is a simulator configured to be able to input an operation amount corresponding to an operation, an accelerator operation, and a brake operation; a reception unit 52 that receives a signal based on each operation amount input to the input unit 51; A road surface information storage unit 53 that stores road surface information and a control unit 54 that controls the dynamometers 2 to 4 based on the operation amounts received by the reception unit 52 are provided. The control device 5 is a dedicated or general-purpose computer including a CPU, an internal memory, an AD converter, an input / output interface, input means such as a mouse or a keyboard, and the like.

Specifically, as shown in FIG. 1, the input unit 51 includes a handle operation amount input unit 51a for inputting a handle operation amount corresponding to a vehicle handle operation, and an accelerator operation amount corresponding to an accelerator operation of the vehicle. , An accelerator operation amount input unit 51b for inputting, and a brake operation amount input unit 51c for inputting a brake operation amount corresponding to the brake operation of the vehicle.

The steering wheel operation amount input unit 51a is a steering wheel controller having a steering wheel that simulates an actual steering wheel of a vehicle, and outputs an output signal based on the rotation angle (steering angle) from the rotation neutral position. The handle operation amount input unit 51a is placed on, for example, a table top and is manually operated by an operator.

The accelerator operation amount input unit 51b has an accelerator pedal that simulates an actual accelerator pedal of the vehicle, and outputs an output signal based on the depression amount of the accelerator pedal.

The brake operation amount input unit 51c has a brake pedal that simulates an actual brake pedal of the vehicle, and outputs an output signal based on the depression amount of the brake pedal.

In the present embodiment, the accelerator operation amount input unit 51b and the brake operation amount input unit 51c are integrated and mounted on a common base member. For example, the accelerator operation amount input unit 51b and the brake operation amount input unit 51c are placed under a desk and operated by the operator with their feet. The

The input unit 51 may include a shift lever operation input unit 51d for inputting a shift lever (select lever) operation. In the case where the power train PT has a manual transmission, A clutch operation amount input unit 51e for inputting a clutch operation amount for operating the clutch of the manual transmission may be further provided. The shift lever operation input unit 51d and the clutch operation amount input unit 51e are not necessarily provided.

The accepting unit 52 receives an output signal that is an operation amount from the handle operation amount input unit 51a, and an accelerator operation amount that accepts an output signal that is an operation amount from the accelerator operation amount input unit 51b. It has a receiving unit 52b and a brake operation amount receiving unit 52c that receives an output signal that is an operation amount from the brake operation amount input unit 51c.
When the input unit 51 includes a shift lever (select lever) operation input unit 51d as in the present embodiment, the reception unit 52 receives a shift lever operation reception unit 52d that receives an output signal indicating the operation of the shift lever. When the input unit 51 includes the clutch operation amount input unit 51e, the reception unit 52 includes a clutch operation amount reception unit 52e that receives an output signal indicating the clutch operation amount.
Each of these receiving units 52a to 52e outputs each received output signal to the control unit 54 described later.

The road surface information storage unit 53 is formed in a predetermined area of the memory, and stores road surface information set by the user regarding the road surface of the travel course when the travel course is created in advance.
The road surface information is composed of various parameters indicating the surface state of the road surface, and includes at least a road surface friction coefficient or a road surface gradient as the parameter.
In this embodiment, the friction coefficient of the road surface, the gradient of the road surface, the temperature of the road surface, the curvature of the curve, and the like are used as the parameters. It is linked and remembered.
Here, the road surface information can be set independently for each of the left and right wheels or the front and rear wheels of the specimen, and the road surface information storage unit 53 is set for each of the left and right wheels or the front and rear wheels. The values of various parameters are stored.

The control unit 54 controls the dynamometers 2 to 4 based on the operation amounts input by the input unit 51 and the road surface information stored in the road surface information storage unit 53. Travel resistance applied to the virtual vehicle traveling on the travel course using the operation amount input by the input unit 51a, the accelerator operation amount input unit 51b, and the brake operation amount input unit 51c and the values of various parameters constituting the road surface information Is calculated. Here, the control unit 54 calculates the driving resistance in real time. Specifically, the input operation amount and the road surface information set at the location where the virtual vehicle is traveling on the traveling course. Is used to calculate the running resistance applied to the virtual vehicle from time to time. Then, the control unit 54 controls the

absorption dynamometers

2 and 3 and the driving dynamometer 4 so as to simulate the state of the virtual vehicle with the power train PT as a specimen based on the running resistance.
Here, the control unit 54 is configured to sequentially calculate the travel resistance and control the dynamometers 2 to 4 in real time based on the travel resistance.

Specifically, the control unit 54, for example, inputs a torque command value or a rotation speed command value to the driving dynamometer 4 based on the accelerator operation amount (depressed amount of the accelerator pedal) input by the accelerator operation amount input unit 51b. Then, based on the accelerator operation amount and the handle operation amount (steering angle of the handle) input by the handle operation amount input unit 51a, the torque command value or the rotation speed command value is input to the

absorption dynamometers

2 and 3.

The control unit 54 of the present embodiment, for example, the speed of the left wheel and the right wheel based on the steering wheel operation amount (steering angle of the steering wheel) input by the steering wheel operation amount input unit 51a and the friction coefficient included in the road surface information. In order to simulate the rotational speed difference and / or torque difference caused by the difference (rotational speed difference), command values to the left and

right absorption dynamometers

2 and 3 are set. More specifically, the control unit 54 inputs a command value input to the two left and

right dynamometers

2 and 3 with a rotational speed difference and / or a torque difference based on the handle operation amount.

Here, the relationship between the steering wheel operation amount and the rotation speed difference and / or torque difference in the command value is set in advance, and the relationship data indicating the relationship is stored in the internal memory or the external memory. Then, the control unit 54 sets command values to be input to the left and

right absorption dynamometers

2 and 3 from the handle operation amount input by the handle operation amount input unit 51a and the relation data.

As the relational data, there can be considered data in which a predetermined relation is given to command values inputted to the left and

right absorption dynamometers

2 and 3 in accordance with the amount of operation of the steering wheel. Here, the predetermined relationship is, for example, proportionally increasing (decreasing) the ratio of the rotational speed and / or torque input to the left and right dynamometers as the steering wheel operation amount increases or increasing the difference between them. Etc.
As a specific mode of the relational data, for example, a mode in which the steering wheel operation amount and the rotational speed and / or torque command value input to the left and right dynamometers are stored in a lookup table can be cited. In addition, a mode in which a calculation formula for calculating a rotation speed and / or a torque command value input to the left and right dynamometers using the steering wheel operation amount as a variable can be given.

Further, as related data, in addition to the steering wheel operation amount, the command value to be input to the left and

right absorption dynamometers

2 and 3 using the accelerator operation amount (accelerator depression amount) or the brake operation amount (brake depression amount) as a parameter. May have a predetermined relationship.

The control unit 54 determines the rotation speed and / or torque of the left and right wheels of the virtual vehicle based on the values of various parameters constituting the steering wheel operation amount, the accelerator operation amount, the brake operation amount, and / or the road surface information. It may be configured to be determined by simulation and input to the left and

right absorption dynamometers

2 and 3 as command values.

In the present embodiment, the control device 5 further includes a function as an operation amount storage unit 55 that stores each operation amount received by the reception unit 52.

The operation amount storage unit 55 is formed in a predetermined area of the memory, and stores each operation amount input by the input unit 51 in time series. Here, the operation amount storage unit 55 is configured to store time-series data of each operation amount when the virtual vehicle is made to travel at least one lap traveling course as a set of data.

Here, the control unit 54 is configured to control each of the load devices 2 to 4 based on each operation amount stored in the operation amount storage unit 55, and the simulated running of the user is reproduced by the control device 5. can do.

The display device 6 displays the operation content such as the operation amount input to the input unit 51 and the content of the road surface information stored in the road surface information storage unit 53 on the display DS, and includes a CPU, an internal memory, A dedicated or general-purpose computer including an AD converter, an input / output interface, input means such as a mouse or keyboard, display means such as a display DS, and the like.

This display device 6 functions as a display unit 61 as shown in FIG. 2 by the cooperation of the CPU and its peripheral devices.

The display unit 61 acquires the road surface information stored in the road surface information storage unit 53, reflects the road surface information, and displays the road surface R of the traveling course on the display DS. As shown in FIG. 3, the display unit 61 is configured to display a traveling course so that a place X where the road surface state changes (hereinafter, referred to as a road surface state changing part X) can be recognized. A portion where the friction coefficient of R changes is displayed as a road surface state change portion X.
Here, the road surface state change portion X represents the slipperiness of the road surface R, and for example, a frozen portion or a puddle on the road surface R is imitated with a color or pattern.

Further, as shown in FIG. 3, the display unit 61 displays the virtual vehicle V on the road surface R displayed on the display DS, and the traveling state of the virtual vehicle V is input by the input unit 51 described above. Display according to each operation amount. That is, the display unit 61 is configured to display the traveling state of the virtual vehicle V in synchronization with the operation state of the power train PT operated according to each operation amount input by the input unit 51. Thus, the operation amount input by the user to the input unit 51 is reflected in the travel state of the virtual vehicle V in real time.
Further, the display unit 61 obtains a load that the dynamometers 2 to 4 give to the power train PT that is a specimen from the control unit 54, and changes the traveling state of the virtual vehicle V according to the load (for example, Display with acceleration / deceleration. Thereby, the virtual vehicle V is displayed as if traveling while receiving a load applied to the specimen, and the behavior of the virtual vehicle V and the behavior of the specimen can be synchronized.

Furthermore, when there is a curve in the course of the traveling course, the display unit 61 displays the road surface R so that the curvature of the curve can be visually recognized, as shown in FIG.

The display unit 61 of the present embodiment acquires time series data of the operation amount stored in the operation amount storage unit 55 described above, and displays the traveling state of the virtual vehicle V based on the past operation amount. It is configured to be able to.

According to the vehicle test system 100 according to the present embodiment configured as described above, the road surface R is displayed on the display DS while reflecting the road surface information of the traveling course, so that the test driver can simulate the driving while recognizing the road surface state. can do. As a result, the test driver can operate each input unit 51 as if he / she actually drive using his / her sensitivity and experience, and can improve reproducibility when driving the same traveling course. It is possible to evaluate the performance of the specimen more correctly than before.

In addition, since the control device 5 has a function as the operation amount storage unit 55, the simulated running by the test driver can be reproduced by the control device 5, for example, reproducibility such as a repeated test is improved, and the performance of the specimen is increased. Can be evaluated more correctly.

Further, based on the steering wheel operation amount (steering angle of the steering wheel) input by the steering wheel operation amount input unit 51a and the friction coefficient included in the road surface information, the control unit 54, for example, the speed difference between the left wheel and the right wheel ( Since the command values to the left and

right absorption dynamometers

2 and 3 are set in order to simulate the rotational speed difference and / or torque difference caused by the rotational speed difference), traveling when traveling on the curve displayed on the display DS Resistance and the like can be accurately reproduced.

The present invention is not limited to the above embodiment.

For example, in the above-described embodiment, the traveling course is displayed so that the display unit 61 can visually recognize the information regarding the friction coefficient of the road surface R. However, the traveling course is displayed so that the gradient or curve of the road surface R can be visually recognized. Also good.

In the above embodiment, the case where the performance of the powertrain PT is tested has been described. However, the performance of a completed vehicle, an engine, or the like may be tested using the vehicle test system of the present invention.
In such a case, for example, the operation amount stored in the operation amount storage unit 55 in the performance test of the powertrain PT is output to the control unit in the performance test of the completed vehicle, the engine, etc. It is possible to compare the performance of multiple types of specimens.

In the embodiment, the control device 5 is provided with the functions as the reception unit 52, the road surface information storage unit 53, the control unit 54, and the operation amount storage unit 55, and the display device 61 is provided with the function as the display unit 61. However, these functions may be provided in one information processing apparatus, and which apparatus is provided with each function may be appropriately changed.

Furthermore, the control device 5 further includes an output unit 56 that outputs each operation amount stored in the operation amount storage unit 55 as data that can be used in a bench test performed without using the input unit 51. Also good.
Such a bench test includes, for example, a performance test performed by placing a completed vehicle on a chassis dynamometer, and the output unit 56 includes, for example, an operation amount for the automatic driving device 7 mounted on the completed vehicle. That output data indicating. The bench test may be an engine performance test using an engine dynamo or a powertrain performance test.
Specifically, the output unit 56 may output data indicating each operation amount to the automatic driving device 7 or the like via, for example, wired or wireless, or may output the data to an external memory or the like to the external memory. The automatic driving device 7 may be controlled using the stored data.
With such a configuration, for example, in a vehicle test system in which a performance test is performed by placing a completed vehicle on a chassis dynamometer, a user's simulated running can be reproduced on the chassis dynamometer.

In addition, the control device 5 may include a travel resistance storage unit (not shown) that stores the travel resistance calculated by the control unit 54 using each operation amount and road surface information.
If this is the case, the control unit 54 can control the load devices 2 to 4 using the running resistance stored in the running resistance storage unit. For example, the completed vehicle is mounted on the chassis dynamometer. In the vehicle test system for performing a performance test, the simulated running of the user can be reproduced on the chassis dynamometer by outputting the running resistance stored in the running resistance storage unit to the chassis dynamometer.

In the embodiment described above, the driving train PT is tested by inputting power to the power train PT using the driving dynamometer 4. However, the power is input to the power train PT using the actual engine and the power is tested. A test of train PT or a fuel consumption test of an actual engine may be performed.

Furthermore, although the load device of the above embodiment uses an absorption dynamometer, it may use an absorption motor.

In other embodiments, the vehicle test system 100 may be configured to cause the virtual vehicle to travel on a traveling course in a predetermined speed pattern. In this case, the display unit 61 may be configured to display a speed pattern display field T1 as shown in FIG. 6 on the screen of the display DS. Here, the display column T1 shows a graph G1 in which time is taken on the vertical axis and the vehicle speed is taken on the horizontal axis (the axis may be reversed). The graph G1, for example, includes a predetermined speed pattern B and the predetermined speed. The upper limit speed pattern H and the lower limit speed pattern L set for the pattern B may be displayed.

The display unit 61 may be further configured to display a marker P indicating the current speed (vehicle speed) of the virtual vehicle in the display column T1. Here, the speed of the virtual vehicle is determined by the steering wheel operation amount (steering wheel steering angle), the accelerator operation amount (accelerator pedal depression amount) and / or the brake operation amount (brake pedal depression amount) input by the input units. Based on the friction coefficient included in the road surface information, it is calculated by the control unit 54.

In the graph G1, the upward direction is the future side, and the display unit 61 scrolls and displays the graph G1 so that the marker P is near the center of the vehicle speed axis (here, the vertical axis) of the graph G1.

As a result, the test driver changes the speed of the virtual vehicle between the upper limit speed pattern H and the lower limit speed pattern L while looking at the speed patterns B, H, L and the marker P displayed on the graph G1. You can drive to fit.

As shown in FIG. 7, the vehicle test system 100 of this embodiment further includes a blower 8 such as a fan whose wind speed is variable, and the control unit 54 controls the wind speed of the blower 8 according to the vehicle speed of the virtual vehicle. It may be configured to change. As shown in FIG. 8, the blower 8 is provided, for example, on the top plate of a desk in the control room, and is configured to blow air to the face of the test driver. With such a configuration, the test driver can sense a sense of speed through tactile sense in addition to the visual sense, so that the simulator can be operated as if actually driving the vehicle. Therefore, it is possible to effectively prevent an operation that deviates from the specified speed pattern without knowing it. Furthermore, the reproducibility in the case where the same traveling course is simulated can be further improved, and the performance of the vehicle and part thereof can be more accurately evaluated.

Here, the control unit 54 is configured to change the rate of change of the wind speed V of the blower 8 according to the calculated vehicle speed v of the current virtual vehicle. More specifically, the change rate of the wind speed is changed according to the difference between the vehicle speed v and the current target speed v _B indicated by the predetermined speed pattern B. For example, in the case where the vehicle speed v is within a predetermined speed range of the target speed. V _B, and the case that is outside a predetermined velocity range, is configured to change the rate of change of wind speed V.
Here, the “rate of change of the wind speed V” is a ratio (ΔV / Δv) of the change amount (ΔV) of the wind speed V to the change amount (Δv) of the vehicle speed v.

FIG. 9 is a graph showing an example of the relationship between the vehicle speed v and the wind speed V at a certain point in time.
Here, when the vehicle speed v is not less than the lower limit speed v _L indicated by the lower limit speed pattern _{L and not} more than the upper limit speed v _H indicated by the upper limit speed pattern H, the control unit 54 determines the wind speed V with respect to the change amount of the vehicle speed v. Is controlled in a proportional manner. When the vehicle speed v exceeds the upper limit speed v _H or falls below the lower limit speed v _L , the wind speed V abruptly (for example, exponentially proportional to the square) with respect to the change in the vehicle speed v. The air blower 8 is controlled so as to change so as to be proportional to 2 times.

More specifically, when the vehicle speed v exceeds the upper velocity v _H, as the wind speed V increases rapidly with the rise of the vehicle speed v, controls the blower 8. The vehicle speed v, if under a lower limit velocity v _L, as the wind speed V is rapidly reduced with respect to decrease in the vehicle speed v, controls the blower 8.

With such a configuration, when the vehicle speed deviates from the predetermined speed range, the wind speed changes abruptly, so that the test driver immediately notices that the speed of the virtual vehicle is within the predetermined range. Can be corrected immediately.

FIG. 10 is a graph showing another example of the relationship between the vehicle speed v and the wind speed V.
Here, the control unit 54, when the vehicle speed v is different from the target speed v _B is to changes in vehicle speed v, controls the blower 8 so that the wind velocity V changes abruptly. For example, when the vehicle speed v exceeds the target velocity v _B, as the wind speed V increases rapidly with the rise of the vehicle speed v, controls the blower 8. The vehicle speed v, when below the target speed v _B, as the wind speed V is rapidly reduced with respect to decrease in the vehicle speed v, controls the blower 8.

With such a configuration, when the vehicle speed deviates from a predetermined target speed, the wind speed changes abruptly, so the test driver immediately notices that and corrects the virtual vehicle speed to the target speed. be able to.
Incidentally, and if it exceeds the upper limit speed v _H described above, when the lower limit velocity v _L may be configured to wind speed V is more rapidly changed.

FIG. 11 is a graph showing another example of the relationship between the vehicle speed v and the wind speed V.
Here, the control unit 54, the vehicle speed v is the lower limit velocity v _L or more, if it is not more than the upper velocity v _H is a blower 8 as wind speed V is proportionally changed with respect to variation in the vehicle speed v Control. When below the case and the lower limit velocity v _L of the vehicle speed v exceeds the upper limit speed v _H is the wind speed V and controls the blower 8 so as to change instantaneously increased.
More specifically, when the vehicle speed v exceeds the upper limit speed v _H is the wind speed V and controls the blower 8 so as to instantaneously increase. Further, when the vehicle speed v is less than the lower velocity v _L, as the wind speed V decreases instantaneously, it controls the blower 8.

With such a configuration, when the vehicle speed deviates from a predetermined speed range, the wind speed changes instantaneously, so that the test driver immediately notices that the virtual vehicle speed falls within the predetermined range. Can be corrected immediately.

FIG. 12 is a graph showing another example of the relationship between the vehicle speed v and the wind speed V.
Here, the control unit 54, the vehicle speed v is the lower limit velocity v _L or more, if it is not more than the upper velocity v _H is a blower 8 as wind speed V is proportionally changed with respect to variation in the vehicle speed v Control. When below the case and the lower limit velocity v _L of the vehicle speed v exceeds the upper limit speed v _H controls the blower 8 so as to stop the blowing.

With such a configuration, the air flow stops when the vehicle speed deviates from the predetermined speed range, so that the test driver immediately notices that the virtual vehicle speed is within the predetermined range. It can be corrected.

In the above-described example, the wind speed of the blower 8 does not have to correspond to the actual speed of the vehicle, as long as the test driver can feel at least a change in the speed of the vehicle. The upper limit speed v _H and a lower limit velocity v _L described above may be set to any value.

The control unit 54, the vehicle speed v is predetermined speed range (e.g., a lower limit velocity v _L or more, the upper limit speed v _H the range) in case of deviation from to supply an extremely strong wind at short time intervals Further, the blower 8 may be controlled (for example, to supply a strong pulsed wind). Alternatively, when the vehicle speed v deviates from a predetermined speed range, the control unit 54 may control the blower 8 so as to stop the blowing after supplying a strong pulsed wind.

The air blower 8 may have a variable wind direction with respect to the left-right direction. In this case, the control unit 54 may control the blower 8 so as to change the wind direction according to the handle operation amount (steering angle of the handle) input by the handle operation amount input unit 51a. If this is the case, the wind direction of the wind supplied to the test driver changes as the steering wheel is operated, so that the simulator can be operated as if the vehicle is actually being driven, and the simulated driving can be reproduced. Sexuality increases.

The vehicle test system 100 may include a speaker that emits wind noise together with or in place of the blower 8. In this case, the control unit 54 may be configured to change the volume of the wind noise according to the vehicle speed v of the virtual vehicle. Specifically, like the control of the blower 8 described above, according to the difference between the vehicle speed v and the target velocity v _B, it may be configured as the rate of change of the volume of the wind noise is changed.

Moreover, the air blower 8 may be comprised so that adjustment of the temperature of the supplied wind is possible. In this case, the control unit 54 may be configured to change the blowing temperature according to the vehicle speed v of the virtual vehicle. Specifically, like the control of the wind speed of the blower device 8 described above, according to the difference between the vehicle speed v and the target velocity v _B, it may be configured as the rate of change of blast temperature changes. For example, in the case of exceeding the upper limit speed v _H may control the blower 8 so that the temperature of the air decreases rapidly with the rise of the vehicle speed v. The vehicle speed v, if under a lower limit velocity v _L, as the temperature of the air rises rapidly with respect to decrease in the vehicle speed v, may control the blower 8.

Other than that, the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications are possible without departing from the spirit of the present invention, including a combination of parts of each embodiment as appropriate.

According to the present invention, it is possible to provide a vehicle test system or the like that can simulate a vehicle while recognizing a road surface condition, and that can more accurately evaluate the performance of a vehicle and a part of the vehicle.

Claims

Handle operation amount input unit for inputting the handle operation amount corresponding to the vehicle handle operation, accelerator operation amount input unit for inputting the accelerator operation amount corresponding to the vehicle accelerator operation, and vehicle brake operation A brake operation amount input unit for inputting the brake operation amount, and a vehicle test system for testing a vehicle as a specimen or a part thereof using each operation amount input unit,
A load device for applying a load to the specimen;
A display unit for displaying a traveling course on a display so that road surface information including at least one of information on a friction coefficient of a road surface or a gradient of the road surface can be visually recognized;
The driving resistance is calculated using at least one operation amount of the steering wheel operation amount, the accelerator operation amount or the brake operation amount, and the road surface information displayed by the display unit, and the load is calculated based on the driving resistance. A vehicle test system comprising: a control unit that controls the device.
An operation amount storage unit for storing each operation amount input to the steering wheel operation amount input unit, the accelerator operation amount input unit, and the brake operation amount input unit in time series;
The vehicle test system according to claim 1, wherein the control unit controls the load device based on each operation amount stored in the operation amount storage unit.
An operation amount storage unit for storing each operation amount input to the steering wheel operation amount input unit, the accelerator operation amount input unit, and the brake operation amount input unit in time series;
The vehicle test system according to claim 1, further comprising: an output unit that outputs each operation amount stored in the operation amount storage unit as data usable in a bench test.
The display unit displays, on the display, a virtual vehicle that travels the traveling course according to each operation amount input to the steering wheel operation amount input unit, the accelerator operation amount input unit, and the brake operation amount input unit. Item 4. The vehicle test system according to any one of Items 1 to 3.
5. The vehicle test system according to claim 4, wherein a running state of the virtual vehicle displayed by the display unit changes according to a load applied to the specimen from the load device.
The steering wheel operation amount input unit has a steering wheel,
The accelerator operation amount input unit has an accelerator pedal,
The vehicle test system according to any one of claims 1 to 5, wherein the brake operation amount input unit includes a brake pedal.
The vehicle test system according to any one of claims 1 to 6, further comprising a clutch operation amount input unit that inputs a clutch operation amount corresponding to a clutch operation of the vehicle.
The road surface information displayed by the display unit can be set independently for the left and right wheels or the front and rear wheels of the specimen,
A first load device is connected to a first output shaft to which one of the left and right wheels of the specimen or one of the front and rear wheels is connected, and the other of the left and right wheels or the other of the front and rear wheels is connected. A second load device is connected to the two output shafts;
Based on the road surface information set independently for the two wheels and the amount of operation of each handle, the control unit calculates a difference in rotation speed and / or torque generated between the two wheels. The vehicle test system according to claim 1, wherein the first load device and the second load device are controlled to be simulated.
It further comprises a blower that can change the wind speed,
The vehicle test system according to any one of claims 1 to 8, wherein the control unit controls the blower so as to change the wind speed according to a vehicle speed of a virtual vehicle traveling on the travel course.
The vehicle test system according to claim 9, wherein the control unit controls the blower so that a change rate of the wind speed changes according to a difference between the vehicle speed and a predetermined target speed of the virtual vehicle.
Handle operation amount input unit for inputting the handle operation amount corresponding to the vehicle handle operation, accelerator operation amount input unit for inputting the accelerator operation amount corresponding to the vehicle accelerator operation, and vehicle brake operation A brake operation amount input unit for inputting the brake operation amount, and the road course is displayed on the display so that the road surface information including at least one of the information on the friction coefficient of the road surface or the gradient of the road surface can be visually recognized. In the control device used in the vehicle test system configured to be able to simulate running using each operation amount input unit,
A driving resistance is calculated using at least one of the steering wheel operation amount, the accelerator operation amount or the brake operation amount, and the road surface information displayed on the display, and the load device is based on the driving resistance. A control device for a vehicle test system for controlling the vehicle.
Handle operation amount input unit for inputting the handle operation amount corresponding to the vehicle handle operation, accelerator operation amount input unit for inputting the accelerator operation amount corresponding to the vehicle accelerator operation, and vehicle brake operation A brake operation amount input unit for inputting the brake operation amount, and the road course is displayed on the display so that the road surface information including at least one of the information on the friction coefficient of the road surface or the gradient of the road surface can be visually recognized. In the control method of the vehicle test system configured to be able to run a simulation using each operation amount input unit,
A driving resistance is calculated using at least one of the steering wheel operation amount, the accelerator operation amount or the brake operation amount, and the road surface information displayed on the display, and the load device is based on the driving resistance. A vehicle test system control method for controlling the vehicle.
Handle operation amount input unit for inputting the handle operation amount corresponding to the vehicle handle operation, accelerator operation amount input unit for inputting the accelerator operation amount corresponding to the vehicle accelerator operation, and vehicle brake operation A brake operation amount input unit for inputting the brake operation amount, and the road course is displayed on the display so that the road surface information including at least one of the information on the friction coefficient of the road surface or the gradient of the road surface can be visually recognized. In the program used for the vehicle test system configured to be able to run by simulation using the respective operation amount input units,
A driving resistance is calculated using at least one of the steering wheel operation amount, the accelerator operation amount or the brake operation amount, and the road surface information displayed on the display, and the load device is based on the driving resistance. A program for a vehicle test system that causes a computer to function as a control unit for controlling the vehicle.