Avl List Gmbh

Gerald Hochmann

Martin Schmidt

Helmut Kokal

Felix Pfister

Dirk Denger

Emre Kural

Wolfgang Winkler

Josef Mayrhofer

Camillo Signor

Stefan Dragaschnig

Joachim Schmidt

Di Stefan Dragaschnig

Di Josef Mayrhofer

Di Helmut Kokal

Aspects of the present disclosure are directed to estimating a gearbox gear for a test run from available measured values of a test drive. In some embodiments, a chronological sequence of a vehicle speed and an engine speed may be used as measured values, a number of areas with a linear relationship between the vehicle speed and the engine speed being identified by means of a clustering algorithm from data points from related vehicle speeds and engine speeds. The clustering algorithm, in accordance with some specific embodiments, assigns the data points to the number of areas and calculates a cluster center for each area, which is interpreted as a gear. The gear linked to the cluster center of the area is assigned to the data points of an area in order to obtain a chronological sequence of gears, and used as a target value of the test run.

Test stand and method for performing a test to simulate a test drive of a vehicle

A test stand assembly includes an electric machine () for driving and/or loading a test object (), which is connected by a connecting shaft () having an adapter flange () to the electric machine (). The assembly has a constant, predetermined moment of inertia, and the mass and the moment of inertia of the adapter flange () are selected in such a manner that the resonant frequency of the system formed of test object (), adapter flange (), connecting flange (), and electric machine () for driving and/or loading the test object () lies between the idle frequency and the partial load frequency of the test object ().

Test stand assembly including connecting shaft having adaptor flange with selected mass and moment of inertia

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Hitzendorf, Austria

Gerald Hochmann