Ethernet-Based Servo-Hydraulic Real-Time Controller and DAQ at ELSA for Large Scale Experiments

This paper presents an overview of the developments performed at the European Laboratory for Structural Assessment (ELSA) of the Joint Research Centre of European Commission concerning the new generation of servo-hydraulic real-time digital controller/acquisition system adopted in large scale experi...

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Bibliographic Details
Published inJournal of earthquake engineering : JEE Vol. 26; no. 15; pp. 7657 - 7688
Main Authors Peroni, Marco, Pegon, Pierre, Molina, Francisco Javier, Buchet, Philippe
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 18.11.2022
Taylor & Francis Ltd
Subjects
Computer architecture
controller
Controllers
Dynamic tests
ELSA
ELSAREC
EtherCAT
Ethernet
Experimentation
Experiments
Modular systems
Real time
Research facilities
servo-hydraulic
Servocontrol
structural testing
Transducers
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Summary:This paper presents an overview of the developments performed at the European Laboratory for Structural Assessment (ELSA) of the Joint Research Centre of European Commission concerning the new generation of servo-hydraulic real-time digital controller/acquisition system adopted in large scale experiments. The hardware architecture is based on EtherCAT® modules that guarantee a versatile and modular system easily adaptable to changing requirements (a typical situation experienced at ELSA with custom adapted non-standardized large scale structural experiments). Other fundamental features of this system are that all the analog signals are digitalized in the proximity of the transducers reducing noise-to-signal ratio (a great advantage for Pseudo-dynamic tests but in general for all experimentation), and all the different slave controllers communicate at each time sampling through a deterministic robust digital bus. In addition to the increasing computer performances, the developed simplified software architecture does offer a substantial improvement of control quality in terms of speed, safety, and accuracy compared with conventional/commercial systems.
ISSN:1363-2469
1559-808X
DOI:10.1080/13632469.2021.1979134