Christian Doppler Labor
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Grafik (c) AVL List GmbH, Graz

The research goals of the Christian Doppler Laboratory are the development of new and integrated methodologies for model based calibration of automotive systems (combustion engines, powertrain systems, hybrid components) and the implementation of these methodologies in essential calibration tasks. In this context calibration is understood as the optimisation of vehicles and their subsystems through proper parametrisation of various controller parameters. The CDL will intensify the collaboration between the Institute of Mechanics and Mechatronics (Division of Control and Process Automation) at Vienna University of Technology and AVL List GmbH, Graz as industrial partner. The central research programme is focused on the development of new methodologies for model based calibration techniques together with the related basic research and the enhancement of existing concepts for an integrated model based calibration workflow. It includes the three components experiment design, nonlinear system identification and controller stability analysis and design. Experiment design as a prerequisite for model based techniques has the goal to gain a maximum of information from an unknown system through experiments with minimum effort. A major challenge is to meet numerous constraints like operational limits of the system. The relevant experiments will be mainly conducted on engine or battery testbeds. The nonlinear dynamic system identification task is to create a model from measured input and output data. Due to the high complexity of the problem the incorporation of prior knowledge and the proper choice of the model architecture is of major importance. The main goal in this task is to develop algorithms for data based modelling with a high degree of maturity and flexibility in view of their industrial application. Based on nonlinear dynamic models the development of methods for stability and performance analysis and controller design, respectively, will be investigated in the course of this CDL. In the sequel the research programme of the proposed CDL comprises the systematic employment and enhancement of these methodologies to essential calibration tasks in the automotive environment. Typical examples are ECU map optimisation, controller calibration, emission aftertreatment or battery management system calibration but also hardware-in-the-loop simulation of engine processes. Through the combination of the obtained expertise on the basic methodologies with the expert knowledge available at the industrial partner the final objective of the CDL is the ability to offer model based calibration chains on a commercially competitive level.