New methods to engineer and seamlessly reconfigure time triggered Ethernet based systems during runtime based on the PROFINET IRT example

• Main Author: Wisniewski, Lukasz (Author)
• Format: Electronic eBook
• Language: English
• Published: Berlin, Germany : Springer Vieweg, 2017.
• Series: Technologien für die intelligente Automation ; Bd. 6.
• Subjects: Ethernet (Local area network system); Wireless communication systems.; elektronické knihy; electronic books
• ISBN: 9783662546505; 9783662546499
• Physical Description: 1 online resource (xix, 200 pages) : illustrations (some color)

The objective of this dissertation is to design a concept that would allow to increase the flexibility of currently available Time Triggered Ethernet based (TTEB) systems, however, without affecting their performance and robustness. The main challenges are related to scheduling of time triggered com...

Table of Contents:

• Kurzfassung; Abstract; Acknowledgement; Contents; Abbreviations; 1 Introduction; 1.1 Motivation; 1.2 Objective; 1.3 Outline of the document; 2 Fundamentals; 2.1 Production Systems; 2.1.1 Automation Systems; 2.1.2 Networked Control System; 2.2 NCS Communication Requirements; 2.2.1 Timeliness in NCS; 2.2.2 Communication Reliability in NCS; 2.2.3 Industrial Communication Requirements
• Summary; 2.3 Industrial Network Systems; 2.3.1 Industrial Ethernet based Protocols
• Real-Time; 2.3.2 Industrial Ethernet based Protocols
• Reliability; 2.4 Engineering of Industrial Network Systems.
• 2.5 Re-engineering of Industrial Network Systems2.6 Problem Definition; 2.7 Solution Approach; 3 Timeliness in Ethernet Based Network Control Systems; 3.1 Network Topology; 3.2 Ethernet Standard; 3.3 Ethernet Standard Real-Time Capabilities; 3.4 Ethernet Based Time-Triggered Protocols; 3.4.1 IEEE 802.1 TSN; 3.4.2 Time Triggered Ethernet (TTEthernet); 3.4.3 PROFINET IRT; 3.4.4 EtherCAT; 3.4.5 Summary of Ethernet Based Time Triggered Protocols; 3.5 Communication Scheduling in TTEB Systems; 3.6 Complexity of the Scheduling Problem in TTEB-Systems.
• 3.7 Scheduling Problem Formalisation and Modelling3.7.2 Start Time (si); 3.7.2 Start Time (si); 3.7.3 Processing Time (pi); 3.7.4 End-to-End Time (ei); 3.7.5 Task Deadline (di); 3.7.6 Completion Time; 3.7.7 Scheduling Constraints; 3.8 Scheduling Using Mixed Integer Linear Programming (MILP); 3.8.1 The Disjunctive TTEB Scheduling Model; 3.8.2 MILP Scheduling Results; 3.9 Proposed Scheduling Approach; 3.9.1 Slip-Stream Effect
• Working Principle; 3.9.2 Theoretical Analysis of the Slip-StreamScheduling
• Line Topology; 3.9.3 Slip-Streamin Tree Topology.
• 3.9.4 Theoretical Analysis of the extended slip-stream effect
• Tree Graphs3.9.5 Slip-streamin Ring topology; 3.9.6 Theoretical Analysis of the proposed approach
• Graphs with Cycles (Rings); 3.9.7 Slip-streamin Topology, Where Multiple PLC Ports are Involved; 3.10 Clock Synchronisation Accuracy and Scheduling; 3.10.1 Accuracy Determination Methods; 3.10.2 Benchmark of the Synchronisation Accuracy Determination Methods; 3.10.3 Considering Synchronisation Accuracy in the Schedule; 3.11 Concluding Remarks; 4 Communication Reliability; 4.1 Redundancy methods; 4.2 Dynamic Redundancy Methods.
• 4.2.1 An Approach to Improve Dynamic Redundancy Protocols4.2.2 Theoretical Analysis of the Failure Detection Time; 4.2.3 Dynamic Redundancy and Scheduling; 4.3 Static Redundancy Methods; 4.3.1 Path Search Aspects; 4.3.2 2-Disjoint Paths; 4.3.3 Possibly Disjoint Path Search Method; 4.3.4 Theoretical Analysis of the Possibly Disjoint Path Search Approach; 4.3.5 Static Redundancy and Scheduling; 4.4 Concluding Remarks; 5 Seamless Reconfiguration of the Industrial Network System; 5.1 Reconfiguration of the TTEB Industrial Network System; 5.2 Identification of a INS Change
• Scheduler Input.