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Control unit having a test mode for a vehicle, and method and test bench for performing a bench test for a test specimen

A technology for control unit and bench testing, which is used in vehicle testing, mechanical component testing, machine/structural component testing, etc., and can solve problems such as cost, lack of credibility, and failures

Active Publication Date: 2018-08-21
AVL LIST GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem here is that the actual sensors must be removed or disabled in some other way on the test bench, since otherwise contradictory and competing sensor signals would be fed to the control device, which in the best case would be due to missing failure state
In addition, this process is also very expensive and therefore also very disadvantageous

Method used

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  • Control unit having a test mode for a vehicle, and method and test bench for performing a bench test for a test specimen
  • Control unit having a test mode for a vehicle, and method and test bench for performing a bench test for a test specimen
  • Control unit having a test mode for a vehicle, and method and test bench for performing a bench test for a test specimen

Examples

Experimental program
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Embodiment Construction

[0013] exist figure 1 A test stand 1 for a test object 2 (here a vehicle) is shown in a sufficiently known arrangement. The test piece 2 includes a drive unit 3 (here, for example, an internal combustion engine), which is connected via a clutch 4 to a transmission 5 . The transmission 5 is connected to a differential 6 via which in turn the two half shafts 7 a , 7 b of the vehicle 2 are driven. Dynamometers 8 a , 8 b are arranged on the driven axle shafts 7 a , 7 b of the vehicle 2 . In the same way, it is possible to provide only a drive train as the test piece 2, for example with an internal combustion engine, a clutch 4, a transmission 5, a differential 6 and half shafts 7a, 7b, or in any other configuration, in particular Hybrid drive train. The driven wheels can likewise be arranged on the test stand rollers of the roller test stand.

[0014] Test object 2 also includes a vehicle bus 10 , for example a CAN bus, a LIN bus or a Flexray bus. A plurality of measuring se...

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Abstract

The aim of the invention is to enable the realistic testing of a vehicle or of a sub-system of the vehicle by means of a control unit that processes sensor values (SWi) of a measured variable (MGi) ona test bench in consideration of the dynamic state of the vehicle. This aim is achieved, according to the invention, in that the control unit (11) is switched to a test mode in order to execute the bench test, calculation values (RWi) of the same measured variable (MGi) are calculated in a simulation unit (23), and the calculation values (RWi) of the measured variable (MGi) of the control unit (11) are supplied in addition to the detected sensor values (SWi) of the measured variable (MGi). The control unit (11) in test mode ignores the detected sensor values (SWi) of the measured variable (MGi) and omits the plausibility check of the calculation values (RWi) of the measured variables (MGi).

Description

technical field [0001] The invention relates to a method for carrying out bench tests on a test bench for a test piece, wherein at least one measuring sensor is arranged on the test piece, the measuring sensor detects a sensor value of a measured parameter, which sensor value delivers The control unit of the test piece is fed and processed in this control unit for the detected sensor values ​​of the measured variables in accordance with the plausibility test for controlling the function of the test piece. Furthermore, the invention relates to a corresponding test stand and a vehicle control unit for carrying out the method. Background technique [0002] Driveline test rigs or test rigs for complete vehicles are often used in the development of vehicles or vehicle components. In the drive train, the drive train is placed on a test bench and connected to one or more dynamometers. The drive unit driving the drive train, for example the internal combustion engine and / or the el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007G01M13/02
CPCG01M13/025G01M15/00G01M15/02G01M17/00G01M17/007
Inventor R·梅尔
Owner AVL LIST GMBH