Avl List Gmbh

Andreas Fleck

Felix Pfister

Stefan Jakubek

Emre Kural

Various embodiments of the present disclosure are directed to a method for carrying out a test run on a test stand. The method in some embodiments reduces a deviation between a comparison simulation value and a comparison reference value when carrying out a test run on a test stand with a test object by simulating via a simulation unit a number of simulation values using a number of specified reference values starting from a selected reference value, determining a corrected reference value which is specified to the simulation unit for simulating a corrected simulation value and determining at least one setpoint variable using the corrected simulation value.

Method for performing a test run on a test stand

The invention relates to a method for controlling, more particularly in a closed-loop manner, a test bench for a powertrain with a real transmission, the method including calculating a desired value of a control parameter, more particularly a desired rotational speed, at the transmission output of the real transmission by means of a model that represents the transmission and at least one further component, more particularly a shaft, of the output side of the powertrain as virtual components, on the basis of at least one measurement parameter, more particularly a rotational speed and/or a torque, measured on the powertrain; and controlling the test bench, more particularly a load machine, on the basis of the desired value.

Method for controlling, more particularly in a closed-loop manner, a powertrain test bench with real transmission

In order to reduce the excitation of vibrations and resonances in a test bed for a real component and a virtual component, one of the following method steps is provided: a) determining a first correction value (K) from the measured variable (M), wherein the first correction value (K) is added to the measured variable (M) and the sum is communicated as a corrected measured variable (M*) to the virtual component for calculating the control variable (S), b) determining a second correction value (K) from the calculated control variable (S), wherein the second correction value (K) is added to the calculated control variable (S) and the sum is transferred as a corrected control variable (S*) to the actuator, c) determining a third correction value (K) from the measured variable (M), wherein the third correction value (K) is used to modify a parameter (P) of the equation of movement.

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Maria Enzersdorf, Austria

Andreas Fleck