학술논문

Performance analysis of a non-standard EPICS fast controller
Document Type
Conference
Source
2014 19th IEEE-NPSS Real Time Conference Real Time Conference (RT), 2014 19th IEEE-NPSS. :1-3 May, 2014
Subject
Computing and Processing
Nuclear Engineering
Standards
Hardware
Servers
Control systems
Linear particle accelerator
Reliability
Real-time systems
EPICS middleware
fast controller
PXI/PXIe
LabVIEW
Language
Abstract
The recent large scientific projects present new technological challenges, such as the distributed control over a communication network. In particular, the middleware EPICS is the most extended communication standard in particle accelerators. The integration of modern control architectures in these EPICS networks is becoming common, as for example for the PXI/PXIe and xTCA hardware alternatives. In this work, a different integration procedure for PXIe real time controllers from National Instruments is proposed, using LabVIEW as the design tool. This control architecture is proposed for achieving the implementation requirements of fast controllers, which need an important amount of computational power and signal processing capability, with a tight real-time demand. The present work studies the advantages and drawbacks of this methodology and presents its comprehensive evaluation by means of a laboratory test bench, designed for the application of systematic tests. These tests compare the proposed fast controller performance with a similar system implemented using an standard EPICS IOC provided by the CODAC system.