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Delay analysis of networked control systems based on 100 M switched Ethernet
1College of Mathematics & Computer Science, Wuhan Textile University, Wuhan 430200, China.
Thescientificworldjournal
|July 9, 2014
Summary
Networked control systems using 100 M switched Ethernet offer improved performance. Proper configuration of multi-level switched Ethernet meets diverse control system timing needs, enhancing overall system feasibility.
Area of Science:
- Control Engineering
- Computer Networking
Background:
- Networked control systems (NCS) performance is often degraded by communication delays.
- Switched Ethernet is a potential solution for improving NCS performance.
Purpose of the Study:
- To propose and analyze 100 M switched Ethernet for NCS.
- To determine the impact of Ethernet switch delays on NCS performance.
Main Methods:
- Deduction of upper bound delay formulas for single-level and multi-level switched Ethernet using timing diagram method.
- Analysis of key factors influencing upper bound delay.
- Simulation of NCS performance using TrueTime.
Main Results:
- Single-level 100 M switched Ethernet introduces minimal delay, with little impact on control systems.
- Multi-level 100 M switched Ethernet can meet stringent timing requirements for various control systems.
- Simulations confirm the feasibility and advantages of 100 M switched Ethernet for NCS.
Conclusions:
- 100 M switched Ethernet is a viable and superior networking solution for NCS.
- Careful design of multi-level switched Ethernet, considering levels and node counts, is crucial for optimal performance.
- Network protocol modification is not required for implementing these NCS.
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