System-level test bench generation in a co-design framework

2002 ◽  
Author(s):  
M. Lajolo ◽  
M. Rebaudengo ◽  
M. Sonza Reorda ◽  
M. Violante ◽  
L. Lavagno
Keyword(s):  
Test Bench ◽  
System Level ◽  
Design Framework

Towards Automated Evaluation of Vehicle Dynamics in System-Level Designs

2012 ◽  
Author(s):  
Zsolt Lattmann ◽  
Adam Nagel ◽  
Jason Scott ◽  
Kevin Smyth ◽  
Chris vanBuskirk ◽  
...  
Keyword(s):  
Design Space Exploration ◽  
Design Space ◽  
Test Bench ◽  
Simulation Models ◽  
Mobility Model ◽  
System Level ◽  
Bond Graphs ◽  
Automated Evaluation ◽  
Design Alternatives ◽  
Automatic Composition

We describe the use of the Cyber-Physical Modeling Language (CyPhyML) to support trade studies and integration activities in system-level vehicle designs. CyPhyML captures parameterized component behavior using acausal models (i.e. hybrid bond graphs and Modelica) to enable automatic composition and synthesis of simulation models for significant vehicle subsystems. Generated simulations allow us to compare performance between different design alternatives. System behavior and evaluation are specified independently from specifications for design-space alternatives. Test bench models in CyPhyML are given in terms of generic assemblies over the entire design space, so performance can be evaluated for any selected design instance once automated design space exploration is complete. Generated Simulink models are also integrated into a mobility model for interactive 3-D simulation.

scholarly journals First comparison of the electrical properties of two grid emulators for UVRT test against field measurement

2021 ◽  
Author(s):  
Anica Frehn ◽  
Soroush Azarian ◽  
Gesa Quistorf ◽  
Stephan Adloff ◽  
Fritz Santjer ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Field Measurement ◽  
Test Bench ◽  
Voltage Divider ◽  
System Level ◽  
Hardware In The Loop ◽  
Extra High Voltage ◽  
First Time ◽  
State Of Art ◽  
Technical Rules

AbstractThe technical rules for connecting turbines to the medium, high or extra-high voltage grid in Germany require the certification of the UVRT characteristics of wind turbines. The state-of-art voltage divider-based test equipment, also named UVRT-Container, is well equipped for executing UVRT tests in field. To conduct the UVRT in field the full wind turbine should be already installed. A second option to perform UVRT tests are system level test benches. They enable the testing of the nacelle. The components that are not actually present, such as the turbine tower or the blades, are emulated via a mechanical hardware in the loop (HiL) system. In this work, for the first time, the performance of two different grid simulators installed at the DyNaLab at Fraunhofer IWES and at the CWD at RWTH Aachen University is compared with a field measurement of the same type of wind turbine. Thus, not only a system test bench measurement is compared to a field measurement. Rather, two system test benches with individual technical approaches are additionally compared with each other. The focus of this work is to investigate the characteristics of the grid simulators within the steady-state range of the UVRT tests to replicate identical fault shapes on the test benches and in the field.

Application of Robust Design Techniques to the Parallel Design of Engineering Systems

2004 ◽  
Author(s):  
Haitham A. Mahmoud ◽  
Pierre T. Kabamba ◽  
A. Galip Ulsoy ◽  
Gerald A. Brusher
Keyword(s):  
Controller Design ◽  
System Level ◽  
Design Parameters ◽  
Uncertain Parameters ◽  
Design Framework ◽  
Robust Controller ◽  
Design Problems ◽  
Subsystem Design ◽  
Robust Control Design ◽  
Robust Controller Design

The problem of designing complex systems, with performance specifications from multiple disciplines, was cast within the framework of robust control design in a previous publication. In that work, the overall system design problem was decomposed into several subsystem design problems. Robust controller analysis techniques were used to determine limits on the magnitudes of the uncertain parameters that would enable the design of the subsystems to proceed in parallel. In this paper, we extend that previous work, formulate the subsystem design problems in a robust controller design framework and use nonlinear optimization to design subsystems that are robust with respect to the uncertainties arising from designing the subsystems in parallel. This requires that the uncertain parameters for a given subsystem include, in addition to its own uncertain design parameters, the design variables and outputs from other subsystems that are needed in that subsystem analysis. Incorporating the uncertainties arising from parallel subsystem design into robust controller design framework will ensure that, upon assembly of the subsystems, the system-level performance requirements are met. The results are illustrated using a simple example representing a corner-car model.

A maintenance-focused approach to complex system design

2016 ◽  
Vol 30 (3) ◽  
pp. 263-276 ◽  
Author(s):  
Bo Yang Yu ◽  
Tomonori Honda ◽  
Syed M. Zubair ◽  
Mostafa H. Sharqawy ◽  
Maria C. Yang
Keyword(s):  
Life Cycle Cost ◽  
Critical Role ◽  
Operating Cost ◽  
Integrated Approach ◽  
System Level ◽  
Design Parameters ◽  
Engineering System ◽  
Design Framework ◽  
System Level Design ◽  
Level Design

AbstractMaintenance plays a critical role in reducing operating cost and maximizing reliability of a complex engineering system. This paper proposes a novel maintenance-focused, system-level design framework that attempts to capture the interactions between maintenance strategies and system-level design parameters overlooked in current modeling approaches. The goal of this maintenance-focused approach is to help designers better understand the interconnectedness of system architecture, choice of maintenance strategy, and uncertainties in a design. Application of the proposed design framework is demonstrated through a case example of a power plant condenser system. Results show that using an integrated approach can reveal the many nonobvious interactions between subsystems, and produce system designs that have lower life-cycle cost compared to traditional sequential design approaches.

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