Image Processing Reference
In-Depth Information
23
Networked Control Systems for
Manufacturing: Parameterization,
Differentiation, Evaluation,
and Application
. Introduction .........................................
-
. ParameterizationofIndustrialNetworks .............
-
Speed and Bandwidth
●
Delay and Jitter
●
Wired and Wireless
QoS Metrics
●
Network QoS vs. System Performance
. DiferentiationofIndustrialNetworks................
-
Categorization of Networks
●
Time-Division Multiplexing
●
Random Access with Collision Arbitration: CAN
(CSMA/AMP)
●
Ethernet-Based Networks
●
Impact of
Ethernet Application Layer Protocols: OPC
●
Wireless
Networks
. NCSCharacterization................................
-
Theoretical Perspective
●
Experimental Perspective
●
Analytical Perspective
. ApplicationsforIndustrialNetworks.................
-
Networks for Control
●
Networks for Diagnostics
●
Networks
for Safety
●
Multilevel Factory Networking Example:
Reconfigurable Factory Testbed
. FutureTrends ........................................
-
Acknowledgments .........................................
-
References .................................................
-
James R. Moyne
University of Michigan
Dawn M. Tilbury
University of Michigan
23.1 Introduction
Networks have become an integral part of manufacturing over the past decade, replacing point-to-
point communications at all levels. At lower levels in the factory infrastructure, networks provide
higher reliability, visibility, and diagnosability, and enable capabilities such as distributed control,
diagnostics, safety, and device interoperability. At higher levels, networks can leverage Internet ser-
vices to enable factory-wide automated scheduling, control, and diagnostics; improve data storage
and visibility; and open the door to e-manufacturing.
In general, control networks can replace traditional point-to-point wired systems while providing
anumberofadvantages.Perhapsthesimplestbutmostimportantadvantageisthereducedvolume
of wiring. Fewer physical potential points of failure, such as connectors and wire harnesses, result in
