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IODP Publications


Everything is in a state of flow - including development methods

Full Title: Alles ist im Fluss - auch bei den Entwicklungsmethoden

Language: DE

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Based on the Integrated and Open Development Platform (IODP), AVL develops tailor-made solutions for its customers with the aim of paving the way for tomorrow's mobility through the intelligent bridging of virtual and physical development. Wolfgang Puntigam (Global Business Unit Manager IODP), Gianluca Vitale (Global Business Segment Manager) and Markus Pichler (Program Manager Solution Business) discuss the upcoming change - in the automotive industry and at AVL itself - through agile methods, which should complement or replace the waterfall method. (Article is only available in German)

Via CONNECTION into a new age of collaboration

Full Title: Via CONNECTION into a new age of collaboration

Language: EN

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Whether alternative powertrains, autonomous driving or integral safety – current development topics demand one thing above all else: interdisciplinary cooperation with a consistent focus on the overall product. Ultimately, it is not the individual system that determines market success, but the overall performance that the vehicle delivers to the end customer every day.

Durch VERNETZUNG in ein neues Zeitalter der Kollaboration

Full Title: Durch VERNETZUNG in ein neues Zeitalter der Kollaboration

Language: DE

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Egal ob alternative Antriebe, autonomes Fahren, oder integrale Sicherheit – aktuelle Entwicklungsthemen fordern vor allem eines: Interdisziplinäre Zusammenarbeit mit durchgängigem Fokus auf das Gesamtprodukt. Denn am Ende entscheidet nicht das einzelne System über den Markterfolg, sondern die Gesamtperformance, die das Fahrzeug tagtäglich beim Endkunden liefert.

 

RDE on Engine Testbed

Full Title: Testing of Emissions-Relevant Driving Cycles on an Engine Test Bed

Language: EN

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Real Driving Emissions (RDE) represent one of the biggest challenges currently facing the automotive industry. This paper focuses on the requirements necessary to be able to reproduce road measurement in the combined test environment of engine test bed and vehicle simulation.

Rocky Road to ADAS/AD

Full Title: The rocky road to ADAS/AD Development, Validation and Homologation

Language: EN

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Virtual Homologation of AD Functions

Full Title: Validation of X-in-the-Loop Approaches for Virtual Homologation of Automated Driving Functions

Language: EN

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Securing and homologating automated driving functions presents a huge challenge for their market introduction due to an enormous number of scenarios and environment parameter combinations. Confronting conventional real world tests with the new challenges of automated driving is not feasible anymore and yields to a virtualization of the testing methods by means of X-in-the-Loop approaches. Since their validity is a key enabler for virtual homologation, this paper focuses on the validation of X-in-the-Loop approaches. A generic validation methodology is introduced and demonstrated for the specific use case of an automated longitudinal driving function. As a proof of concept equal scenarios are performed in real driving tests as reference and in two X-in-the-Loop approaches based on a test bed resp. a purely virtual co-simulation environment. The paper describes how a consistent implementation can be ensured to evaluate the collected data. First results show a promising correlation regarding multiple repetitions on the test bed and regarding the validation of both X-in-the-Loop approaches for a future virtual homologation of automated driving functions.

 

Coupling of RT Systems

Full Title: Fault-Tolerant Coupling of Real-Time Systems: A Case Study

Language: EN

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This paper demonstrates the application of a model-based coupling approach to cope with non negligible coupling imperfections and faults of interconnected real-time systems. Performance degradation of the coupled overall system is prevented via model-based prediction schemes, which compensate for effects caused by e.g. deadline violations of the coupled real-time systems or data losses and transmission time delays due to the communication network. As an example, the real-time co-simulation setup of a modular driving simulator demonstrates the practical applicability and effectiveness of the proposed coupling approach.

 

FIR-Filter Design for RT Systems

Full Title: Recursive FIR-Filter Design for Fault-Tolerant Real-Time Co-Simulation

Language: EN

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The coupling of real-time and non-real-time systems is directly related to different types of faults which require adequate handling. These faults, such as communication time-delays, data-loss or noisy measurements, originate from the incorporation of real hardware (real-time system) and lead to significant challenges in the coupling process. Without compensating their destabilizing effects the simulation results are corrupted. Ignoring those effects can even result in unstable closed-loop systems in the worst case, which may in turn result in hardware damage. This work proposes a recursive FIRfilter design approach which compensates such fault effects. The effectiveness of the proposed coupling filters is demonstrated by a representative example.

 

 

Model based coupling to control a magnetic levitation system

Full Title: Control of a magnetic levitation system with communication imperfections: A model-based coupling approach

Language: EN

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This work presents a control strategy to control a magnetic levitation system under the influence of coupling imperfections (disturbances). To overcome problems arising whenever the interconnections between plant and controller have a non-negligible influence on the control-loop behavior a so-called model-based coupling approach is used. The main idea of this coupling approach is to use prediction schemes based on recursively identified plant and controller models which compensate for performance degradation due to coupling imperfections. Coupling failures such as time-delays, data-losses and noise drastically influence the controlloop performance. Especially when systems in form of real hardware (real-time systems) are present such disturbances have to be handled adequately. To demonstrate the effectiveness of the model-based coupling approach, a control-loop of a magnetic levitation system is analyzed in simulation as well as in real world laboratory setup (HiL simulation). Furthermore a first insight into the stability analysis of closed-loop systems including the model-based coupling technique is performed for a simplified configuration.

Modellbasierte Echtzeit-Co-Simulation

Full Title: Modellbasierte Echtzeit-Co-Simulation: Überblick und praktische Anwendungsbeispiele

Language: DE

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Diese Arbeit behandelt die sogenannte Echtzeit-Co-Simulationsproblematik. Im Speziellen wird die Einbindung von Hardwarekomponenten in einen Softwareverbund durch kommunikationsbedingte Latenzzeiten und Messrauschen erschwert. Zur Behandlung dieser Störungen wird ein modellbasierter Kopplungsansatz vorgestellt. Mittels Prädiktion von Koppelgrößen können die Auswirkungen von Störeinflüssen deutlich reduziert werden. Die Effektivität dieses Kopplungsansatzes wird an einem Labormodell demonstriert. Darüber hinaus werden einige typische industrielle Anwendungsszenarien skizziert.