JP2002048683A - Performance evaluator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly evaluate the performance of a device and a system with the device assembled therein. SOLUTION: A real unit 22 to be evaluated is connected to a tester unit 24 necessary for the evaluation of performance and dynamic characteristics of devices of a vehicle other than the real unit 22 for letting the real unit 22 and the tester unit 24 function as virtual vehicle are incorporated into the tester unit 24 as digital model parameter 26. The real unit 22 and the virtual vehicle are evaluated based on the data obtained from the virtual vehicle operated under various operating conditions. The digital model parameter 26 is prepared to cover a plurality of vehicles and incorporated sequentially into the tester unit 24 to perform an experiment. This enables evaluation of compatibility for a vehicle with the real unit 22 varied as well.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a performance evaluation device, and more particularly, to a performance evaluation device for evaluating the performance of one or more devices in a system including a plurality of driving devices and the performance of the system.

[0002]

2. Description of the Related Art Conventionally, this type of performance evaluation apparatus has
There has been proposed a virtual vehicle model that evaluates an engine control device using a model computer that outputs a signal (for example, Japanese Patent Application Laid-Open No. 11-326135). In this device, the model computer virtually operates as a vehicle in response to a signal from the engine control device, and engine control is performed based on the response of the engine control device to a signal from the model computer that virtually operates as a vehicle. The equipment is being evaluated.

[0003]

However, in such a performance evaluation device, there are cases where the performance when mounted on an actual vehicle cannot be accurately evaluated. Unlike the control device that simply exchanges signals, the device that actually drives may exhibit unpredictable behavior, so it only exchanges signals with the model computer configured as a virtual vehicle model. Cannot be evaluated accurately.

In order to solve such a problem, a system in which actual equipment is incorporated in a virtual system, for example, a system in which an engine is connected to a motor capable of outputting a load to an output shaft thereof to simulate the system, may be considered. Then, the characteristics of the actual device cannot be accurately evaluated.

[0005] It is an object of the performance evaluation apparatus of the present invention to more appropriately evaluate the performance of a device or a system incorporating the device. It is another object of the performance evaluation apparatus of the present invention to more accurately evaluate the suitability of an evaluation target device for a plurality of systems into which the evaluation target device can be incorporated.

[0006]

Means for Solving the Problems and Their Functions and Effects The performance evaluation apparatus of the present invention employs the following means in order to achieve at least a part of the above object.

A performance evaluation device according to the present invention is a performance evaluation device for evaluating the performance of one or more devices and / or a system in a system including a plurality of driving devices, and the evaluation target device to be evaluated. And a simulation unit connected to the evaluation target device and capable of simulating output of characteristics of devices other than the evaluation target device in the system, and a driving relationship when the evaluation target device is driven with respect to the simulation unit. The gist of the present invention is to include driving relation data detecting means for detecting data, and evaluation means for evaluating the performance of the evaluation target device based on the detected driving relation data.

In the performance evaluation apparatus of the present invention, the evaluation target device is connected to a simulation unit capable of simulatingly outputting the characteristics of devices other than the evaluation target device in the system, and the evaluation target device is driven with respect to the simulation unit. Then, the evaluation target device is evaluated based on the driving relationship data detected at this time.
Since the system consisting of the actual evaluation target device and the simulation unit operates in the same way as the actual system, the evaluation target device and the built-in evaluation device are more accurately compared to those that can simply change the load on the evaluation target device. System performance.

In such a performance evaluation device of the present invention,
The simulation unit may be a unit capable of selecting and outputting characteristics of devices other than the evaluation target device in a plurality of systems into which the evaluation target device can be incorporated. This makes it possible to more accurately evaluate the suitability of the evaluation target device for a plurality of systems into which the evaluation target device can be incorporated.

Further, in the performance evaluation apparatus of the present invention, the simulation unit includes an equivalent device that can be driven equivalently to a device other than the device to be evaluated in the system, and a device other than the device to be evaluated in the system. The unit may include a characteristic storage unit that stores characteristic relation data relating to characteristics, and a drive control unit that drives the equivalent device based on the stored characteristic relation data.

Further, in the performance evaluation device of the present invention,
The system may be a vehicle including devices such as an engine, a transmission, a body, and a suspension as the plurality of devices.

[0012]

Next, embodiments of the present invention will be described with reference to examples. FIG. 1 is an explanatory diagram showing a concept when a performance evaluation device 20 according to one embodiment of the present invention is applied to a vehicle as a system, and FIG. 2 is a diagram illustrating the performance evaluation device 20 according to the embodiment applied to a vehicle as a system. FIG. 2 is a configuration diagram illustrating an outline of a configuration when an engine is to be evaluated while applying the engine.

As shown in FIG. 1, a performance evaluation device 20 of the embodiment includes a real unit 22 to be evaluated and a tester unit 24 required for performance evaluation of the real unit 22.
And a digital model parameter 26 for causing the tester unit 24 to function as a virtual vehicle. The performance of the real unit 22 having the tester unit 24 mounted as a virtual vehicle is evaluated. Assuming that a specific example of the performance evaluation device 20 evaluates an engine mounted on a virtual vehicle, the performance evaluation device 20 includes an engine 32 as an example of the real unit 22 and a test machine unit 24 as shown in FIG. A motor 34 as an example, a controller 35 for driving and controlling the motor 34, a parameter supply computer 36 for storing a digital model parameter 26 read by the controller 35, an operation control of the engine 32, and an evaluation of the performance of the engine 32 And a computer 38 for control evaluation.

The parameter supply computer 36 includes:
As illustrated in FIG. 3, various model vehicles such as model data of equipment constituting a vehicle as a system, for example, data relating to a change in the gear position of a transmission and data such as a moment of inertia of a propeller shaft are stored. Model data of a device other than the above device is selected and output to the controller 35. Controller 35
Controls the driving of the motor 34 based on the model data, so that the dynamic characteristics of the motor 34 with respect to the engine 32 are equivalent to those of an actual vehicle.

The control evaluation computer 38 performs various controls such as operation control of the engine 32 as an actual device, for example, control of an intake air amount and control of a fuel injection amount, and also monitors an operation state of the engine 32. The data is stored as evaluation data, and the stored evaluation data is processed into a predetermined format and output. Specifically, the engine 32 is determined based on the accelerator opening and the vehicle speed (revolution) according to the test.
Is performed, the operating state of the engine 32 and the operating state of the motor 34 from the controller 35 are monitored, and the dynamic characteristics of the vehicle equipped with the engine 32 are evaluated. For example, a specific component of the exhaust gas with respect to the dynamic characteristics of each vehicle is monitored by monitoring the component of the exhaust gas of the engine 32, and the acceleration performance of each vehicle when the engine 32 is mounted by monitoring the vehicle speed as a vehicle is evaluated. You do it. An example is shown in FIG.

According to the performance evaluation apparatus 20 of the embodiment described above, the engine 32 as the real unit 22 is connected to the motor 34 and the controller 35 as the tester unit 24, and the digital data stored in the parameter supply computer 36 is stored. By reading the model parameters 26 into the controller 35, a virtual vehicle as a virtual system is constructed. Further, various driving conditions are set and a driving experiment of the virtual vehicle is carried out, whereby the performance of the engine 32 as the real unit 22 is improved. The performance of the vehicle as a system incorporating the engine 32 can be more appropriately evaluated. Moreover, by preparing a plurality of sets of the digital model parameters 26 and performing the tests a plurality of times, it is possible to evaluate a plurality of virtual vehicles incorporating the engine 32 as the real unit 22. As a result, the compatibility between the engine 32 and various vehicles can also be evaluated.

In the performance evaluation device 20 of the embodiment, the engine 32 is used as a specific example of the real unit 22, but any device constituting the vehicle may be used. In this case, a tester unit 24 suitable for the dynamic characteristics may be used. For example, when an automatic transmission is used as the real unit 22, the tester unit 24 is mounted on the input shaft based on two motors mounted on the input shaft and the output shaft of the automatic transmission and the model parameters on the input shaft side. And a controller that drives and controls the motor that is mounted on the output shaft based on the model parameters on the output shaft side.

Although the performance evaluation device 20 of the embodiment is applied to a vehicle constituted by a plurality of driving devices such as an engine and a transmission, any system other than the vehicle, such as a system constituted by a plurality of driving devices, for example, The present invention may be applied to various systems such as a ship, an aircraft, and a construction machine.

The embodiments of the present invention have been described with reference to the embodiments. However, the present invention is not limited to these embodiments, and various embodiments may be made without departing from the scope of the present invention. Of course, it can be carried out.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a concept when a performance evaluation device 20 according to one embodiment of the present invention is applied to a vehicle as a system.

FIG. 2 is a configuration diagram schematically showing a configuration when the performance evaluation device 20 of the embodiment is applied to a vehicle as a system and an engine is to be evaluated.

FIG. 3 is an explanatory diagram showing an example of a digital model parameter.

FIG. 4 is an explanatory diagram showing an example of performance evaluation.

[Explanation of symbols]

20 performance evaluation device, 22 real unit, 24 testing machine unit, 26 digital model parameters, 32
Engine, 34 motor, 35 controller, 36
Computer for parameter supply, 38 Computer for control evaluation.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kazuki Kuwabara 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (72) Inventor Koji Shirota 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation F Terms (reference) 5B049 BB32 CC02 CC21 DD01 EE01 EE41 EE56 FF03 FF04

Claims (4)

[Claims] 1. A performance evaluation device for evaluating the performance of one or more devices and / or a system in a system including a plurality of driving devices, wherein the device to be evaluated is the device to be evaluated, and the device to be evaluated. A simulation unit that is connected to the system and that can simulately output characteristics of devices other than the evaluation target device in the system; and a driving relationship that detects driving relationship data when the evaluation target device is driven with respect to the simulation unit. A performance evaluation device comprising: data detection means; and evaluation means for evaluating the performance of the evaluation target device based on the detected driving relationship data. 2. The performance evaluation device according to claim 1, wherein the simulation unit is a unit capable of selecting and outputting characteristics of a device other than the evaluation target device in a plurality of systems into which the evaluation target device can be incorporated. 3. The simulation unit stores an equivalent device that can be driven equivalently to devices other than the device to be evaluated in the system, and characteristic relation data relating to characteristics of devices other than the device to be evaluated in the system. 3. The performance evaluation device according to claim 1, wherein the unit includes a characteristic storage unit and a drive control unit that drives the equivalent device based on the stored characteristic relationship data. 4. The performance evaluation device according to claim 1, wherein the system is a vehicle including a plurality of devices such as an engine, a transmission, a body, and a suspension.