Interactive Simulations and advanced Visualization with Modelica

Bellmann, Tobias

doi:10.3384/ecp09430056

Cited by 41 publications

(35 citation statements)

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“…To ensure this flexibility, the modelling work is supported by a DLR library dedicated to wind turbines. In this library, DLR offers its combined modelling know-how in the field of drive-train [5], aerodynamics [6], structural dynamics [7], and visualization [2] (see Figure 1) in order to offer a complete system dynamics library for wind turbines. The following sections describe those parts of the library which are relevant for the control task at hand.…”

Section: Modelling Of Elastic Wind Turbinesmentioning

confidence: 99%

Object-oriented modelling of wind turbines and its application for control design based on nonlinear dynamic inversion

Reiner

Zimmer

2017

Mathematical and Computer Modelling of Dynamical Systems

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This article presents the object-oriented modelling of wind turbine aeroelastics. The article details the undertaken modelling approach and demonstrates its validity by comparing the results to a domain-specific simulation tool. The resulting object-oriented models can be generically adapted to meet different tasks or combined with models from other domains. Also the combination object-oriented Modelica and functional mock-up interface technology enable a rapid design of nonlinear controllers. As one possible application example, the article presents the model-based design of a corresponding controller. Its goal is to extend the turbine lifetime by reducing the structural loads. To this end, a modern control scheme is proposed that takes full advantage of the underlying object-oriented modelling approach. The controller is based on nonlinear dynamic inversion control methods combined with pseudo control hedging. The controller uses wind speed measurement information to adjust to wind gust load. Simulation-based comparisons to conventional control designs show a large potential reduction of the gust load on the wind turbine using the proposed controller.ARTICLE HISTORY

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Section: Modelling Of Elastic Wind Turbinesmentioning

confidence: 99%

Object-oriented modelling of wind turbines and its application for control design based on nonlinear dynamic inversion

Reiner

Zimmer

2017

Mathematical and Computer Modelling of Dynamical Systems

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“…Our touch screen implementation is based on the Modelica Visualization Library [5], [6] and illustrated with Fig. 6 showing a sample screen snapshot.…”

Section: A Rotate Operating Mode Implementationmentioning

confidence: 99%

Human machine interface concept for interactive motion control of a highly maneuverable robotic vehicle

Bünte¹,

Brembeck²,

Ho³

2011

2011 IEEE Intelligent Vehicles Symposium (IV)

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A vehicle dynamics human machine interface (HMI) concept for the operation of a highly maneuverable vehicle is presented. This is motivated by the research vehicle ROMO, which is being developed by the German Aerospace Center (DLR) to facilitate research on a wide spectrum of scientific questions dealing with electric and autonomous mobility. With four wheel individual large range steering and electric wheel hub motors, the vehicle dynamics variables of yaw rate, side slip angle and vehicle velocity can be decoupled, thus opening new motion possibilities. The HMI approach includes distinction of various motion operating modes, suitable reference motion parameterization and adequate filtering of the operator's inputs, both depending on the operating mode. For rotating on the spot the instantaneous center of rotation may be interactively set by the operator on a touch screen.978-1-4577-0891-6/11/$26.00 ©2011 IEEE

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“…It does not use the builtin visualization capacities of a Modelica environment [7]. In particular it also contains visualizer for arbitrary, time-varying surfaces.…”

Section: Using the Visualization Package Insteadmentioning

confidence: 99%

An Interface to the FTire Tire Model

Beuter¹

2011

Linköping Electronic Conference Proceedings

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The FTire tire model [2] is a well established model for calculating tire forces and torques, especially if the internal dynamics of the tire and higher frequencies have to be considered. This tire model is available for most multi-body simulation programs like ADAMS, SimPack, RecurDyn and for MATLAB. But up to now it was not available in the Modelica world. As the FTire model is only available as binary libraries it could not be ported to a pure Modelica code, but an interface to the existing implementation had to be written. This paper describes the implementation of FTire package making FTire tires available in Modelica (so this paper is rather about interfacing than about tire modeling). The interface involves much more than just a set of Modelica wrappers to C functions: Most callable FTire functions are impure, some having only side effects, no return values. Some considerations have to be taken to ensure the FTire functions are called just often enough. Above this basic Modelica interface layer there is an embedding into the Modelica.Mechanics.MultiBody framework with some features beyond FTire itself like non-standard orientation or common definitions for several tires.The moreover there are some related packages for special interests: The FTireVDL demonstrates the compatibility of the FTire interface to the VehicleDynamics package [5] from Modelon. Users of the Visualization package [4] from DLR-RM can apply the FTireSimVis package to animate multi-body models with FTire wheels with the SimVis program, exceeding the animation capabilities of Dymola.

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Interactive Simulations and advanced Visualization with Modelica

Cited by 41 publications

References 0 publications

Object-oriented modelling of wind turbines and its application for control design based on nonlinear dynamic inversion

Object-oriented modelling of wind turbines and its application for control design based on nonlinear dynamic inversion

Human machine interface concept for interactive motion control of a highly maneuverable robotic vehicle

An Interface to the FTire Tire Model

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