Process and device for testing the powertrain of at least partially electrically driven vehicles
AssigneeAVL List GmbH
InventorsOliver König, Stefan Jakubek, Günter Prochart, Kurt Gschweitl, Gregor Gregorcic
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Abstract
In a process for testing the powertrain of vehicles that are at least in part electrically driven, the voltage supplied to the powertrain is controlled by a controller coupled with a simulation system for the energy storage system in a way that the voltage acts dynamically as for a real energy storage system. The controller is designed with a model based controller design method, with a load model of the powertrain being used in the model of the controlled system.
Claims9
A method for testing a powertrain of vehicles that are at least in part electrically driven, comprising:
- controlling a voltage supplied to the powertrain by a controller coupled with a simulation system for an energy storage system in a manner that the voltage acts dynamically as for a real energy storage system, wherein the controller is designed with a model based controller design method as model predictive control;
- using a load model of the powertrain in a discrete time model of a controlled system, wherein the model of the controlled system has a parameter set with a parameter (gP) that is variable over an operating range of the controlled system;
- determining at each time instant (k) an optimal sequence of control moves (Δuk);
- calculating a number (i) of parameter sets with a different parameter (gP,i) over the operating range and choosing a parameter set with parameter (gP,i) which is closest to the actual parameter (gP);
- and
- determining the sequence of control moves (Δuk) with the chosen parameter set.
A device for testing of a powertrain of vehicles that are at least in part electrically driven, comprising:
- a simulation system for an energy storage system, and
- a controller that is coupled with the simulation system;
- wherein the controller controls a voltage supplied to the powertrain in a manner that said voltage acts dynamically as for a real energy storage system;
- wherein a model based controller as a model predictive control is realized for a controlled system, and a load model of the powertrain is integrated in a model of the controlled system and at each time instant (k) an optimal sequence of control moves (Δuk) is determined by the model predictive control;
- wherein the model of the controlled system has a parameter set with a parameter (gP) that is variable over an operating range of the controlled system;
- and
- wherein the model predictive control chooses a parameter set with parameter (gP,i) which is closest to the actual parameter (gP) from a number (i) of calculated and over the operating range allocated parameter sets with different parameter (gP,i) for determining the sequence of control moves (Δuk).
A device for testing of a powertrain of vehicles that are at least in part electrically driven, comprising:
- a simulation system for simulating an energy storage system;
- and
- a controller that is coupled with the simulation system, for controlling a voltage supplied to the powertrain in a manner that said voltage acts dynamically as for a real energy storage system;
- wherein the controller is designed as a model based controller as a model predictive control for a model of a controlled system that has integrated a load model of the powertrain;
- and
- wherein the model of the controlled system has a parameter set with a parameter that is variable over an operating range of the controlled system, one or more parameter sets are calculated for different parameters, an actual parameter is determined based on an estimate of a load power demand of the powertrain, and a parameter set closest to the actual parameter is selected from the calculated one or more parameter sets by the model predictive control to determine a next control move.
Dependencies are inferred from the claim text.