# US 10,768,073 B2 · Method for performing a test with a test specimen on a test bench

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- Number: US 10,768,073 B2
- Document ID: US10768073B2
- Status: Granted
- Kind: B2
- Application number: 15/775,572
- Filed: 2016-11-08
- Published: 2018-11-22
- Granted: 2020-09-08
- Earliest claimed: 2015-11-11
- Assignees: AVL List GmbH
- Applicants: AVL LIST GmbH
- Inventors: Hauke Maschmeyer; Christian Beidl
- Web page: https://patentgrep.com/patent/US10768073B2

## CPC

- G01M 17/007: Wheeled or endless-tracked vehicles (G01M17/08 takes precedence)
- G01M 15/02: Details or accessories of testing apparatus
- G01M 15/042: {by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12}
- G01M 15/102: {by monitoring exhaust gases}
- G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR

## Abstract

In order to be able to construct test scenarios for vehicle development, with which tests can be carried out on a test bench during development, according to the present teaching, an output test in the form of a sequence of driving manoeuvres is carried out on the test bench with the test specimen and a value of the target variable is determined in this way. The result of the acquisition of the target variable resulting from the output test is divided into test segments and each test segment is checked for target-variable-critical relevance by means of a predetermined target variable relevance criterion. A driving maneuver assigned to the test segment or an assigned driving maneuver segment is recorded in the test if the target-variable-critical relevance of the test segment is given.

## Claims

### Claim 1

A method for constructing a test for carrying out a test run for a test specimen on a test bench, in order to examine the test specimen with respect to a target variable, comprising:
performing a prespecified output test in the form of a time sequence of driving maneuvers on the test bench with the test specimen;
measuring the target variable during the prespecified output test;
dividing the measured target variable resulting from the prespecified output test into test segments;
checking each test segment for target-variable-critical relevance by a predetermined target variable relevance criterion;
including a driving maneuver or driving maneuver segment assigned to a test segment in the test if the target-variable-critical relevance of the test segment is satisfied.

### Claim 2 (depends on 1)

The method according to claim 1, wherein a target variable relevance value regarding a specific target variable is stored for a plurality of driving maneuvers, and only those driving maneuvers of the plurality of driving maneuvers for which the target variable relevance value exceeds a prespecified value are selected for the output test.

### Claim 3 (depends on 1)

The method according to claim 1, wherein specific boundary conditions of the test specimen are stored for a plurality of driving maneuvers, and only those driving maneuvers of the plurality of driving maneuvers for which the boundary conditions match the test specimen are selected for the output test.

### Claim 4 (depends on 1)

The method according to claim 1, wherein a driving maneuver is stored as a generic driving maneuver in a driving maneuver database, and a route comprising the generic driving maneuver is selected as a driving maneuver for the output test from a route database comprising known routes.

### Claim 5 (depends on 1)

The method of claim 1, further comprising performing the test on the test bench using the test specimen.

### Claim 6 (depends on 1)

A test bench, comprising:
a control unit having the test constructed by claim 1.

### Claim 7 (depends on 1)

The method of claim 1, wherein the target variable comprises a measure of pollutant emission, acoustics of the vehicle, drivability of the vehicle, or durability of the vehicle.

### Claim 8

A method for constructing a test for a test bench to examine a test specimen with respect to a target variable, comprising:
performing an initial test in the form of a sequence of driving maneuvers
on the test bench with the test specimen;
measuring the target variable during the initial test;
dividing the measured target variable into test segments;
checking each test segment for target-variable-critical relevance by a predetermined target variable relevance criterion;
including a driving maneuver or driving maneuver segment assigned to a test segment in the test if the target-variable-critical relevance of the test segment is satisfied.

### Claim 9 (depends on 8)

A test bench, comprising:
a control unit having the test constructed by claim 8.

### Claim 10 (depends on 8)

The method of claim 8, further comprising:
repeatedly performing the test on the test bench using the test specimen;
wherein the target variable comprises a measure of pollutant emission.