Real-time system support for hybrid structural simulation

Real-time hybrid simulation (RTHS) is an important tool in the design and testing of civil and mechanical structures when engineers and scientists wish to understand the performance of an isolated component within the context of a larger structure. Performing full-scale physical experimentation with...

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Published in:2014 proceedings of the International Conference on Embedded Software (EMSOFT) : October 12-17, 2014, Jaypee Greens Golf and Spa Resort, New Delhi, India pp. 1 - 10
Main Authors: Ferry, David, Bunting, Gregory, Maqhareh, Amin, Prakash, Arun, Dyke, Shirley, Aqrawal, Kunal, Gill, Chris, Chenyang Lu
Format: Conference Proceeding
Language:English
Published: ACM 01.10.2014
Subjects:
C.3 [Special-Purpose and Application-Based Systems]
Computational modeling
D.1 [Programming Techniques]: Parallel programming
Hardware
Numerical models
Parallel processing
Program processors
Real-time and embedded systems
Real-time systems
Sensors
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Abstract Real-time hybrid simulation (RTHS) is an important tool in the design and testing of civil and mechanical structures when engineers and scientists wish to understand the performance of an isolated component within the context of a larger structure. Performing full-scale physical experimentation with a large structure can be prohibitively expensive. Instead, a hybrid testing framework connects part of a physical structure within a closed loop (through sensors and actuators) to a numerical simulation of the rest of the structure. If we wish to understand the dynamic response of the combined structure, this testing must be done in real-time, which significantly restricts both the size of the simulation and the rate at which it can be conducted. Adding parallelism to the numerical simulation can enable both larger and higher frequency real-time simulations, potentially increasing both the accuracy and the control stability of the test. We present a proof-of-concept exploration of the execution of real-time hybrid simulations (an exemplar of a more general class of cyber-mechanical systems) with parallel computations. We execute large numerical simulations within tight timing constraints and provide a reasonable assurance of timeliness and usability. We detail the operation of our system, its design features, and show how parallel execution could enable qualitatively better experimentation within the discipline of structural engineering.
AbstractList Real-time hybrid simulation (RTHS) is an important tool in the design and testing of civil and mechanical structures when engineers and scientists wish to understand the performance of an isolated component within the context of a larger structure. Performing full-scale physical experimentation with a large structure can be prohibitively expensive. Instead, a hybrid testing framework connects part of a physical structure within a closed loop (through sensors and actuators) to a numerical simulation of the rest of the structure. If we wish to understand the dynamic response of the combined structure, this testing must be done in real-time, which significantly restricts both the size of the simulation and the rate at which it can be conducted. Adding parallelism to the numerical simulation can enable both larger and higher frequency real-time simulations, potentially increasing both the accuracy and the control stability of the test. We present a proof-of-concept exploration of the execution of real-time hybrid simulations (an exemplar of a more general class of cyber-mechanical systems) with parallel computations. We execute large numerical simulations within tight timing constraints and provide a reasonable assurance of timeliness and usability. We detail the operation of our system, its design features, and show how parallel execution could enable qualitatively better experimentation within the discipline of structural engineering.
Author Prakash, Arun
Ferry, David
Maqhareh, Amin
Dyke, Shirley
Aqrawal, Kunal
Gill, Chris
Bunting, Gregory
Chenyang Lu
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  givenname: David
  surname: Ferry
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  givenname: Gregory
  surname: Bunting
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  givenname: Amin
  surname: Maqhareh
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  givenname: Arun
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  givenname: Chris
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  email: cdgill@seas.wustl.edu
  organization: Dept. of Comput. Sci., Washington Univ., St. Louis, MO, USA
– sequence: 8
  surname: Chenyang Lu
  fullname: Chenyang Lu
  email: lu@seas.wustl.edu
  organization: Dept. of Comput. Sci., Washington Univ., St. Louis, MO, USA
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Snippet Real-time hybrid simulation (RTHS) is an important tool in the design and testing of civil and mechanical structures when engineers and scientists wish to...
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SubjectTerms C.3 [Special-Purpose and Application-Based Systems]
Computational modeling
D.1 [Programming Techniques]: Parallel programming
Hardware
Numerical models
Parallel processing
Program processors
Real-time and embedded systems
Real-time systems
Sensors
Title Real-time system support for hybrid structural simulation
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