helicopter

Username: helicopter

Participant details

	Network Member	Yu-Chu Tian
	Organisation/Institution	Queensland University of Technology
	Department/Centre	Faculty of Information technology
	Lab
	Website
	Research area	networked control systems
	Research keywords	protocol, ncs, real-time

Research Interests

A major trend in modern industrial and commercial systems is to integrate computing, communication, and control into different level of machine/factory operations and information processing. These distributed control systems are referred to as Networked Control Systems (NCSs). They are composed of sensors, actuators, and controllers interconnected by communication networks. The primary objective of NCS design is to efficiently use the network capacity while maintaining quality-of-control (QoC) performance. The evolution of the communication architecture from conventional peer-to-peer to this common-bus interconnection, however, introduces uncertain time-delay because of network. My research objective is to design new communication protocols and to build a framework for complex real-time requirements under variable network architectures in NCSs. The goal of the new protocols is to minimize the traffic delay and make the delay as deterministic as possible. Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) will be modified as a part of the new protocols. The framework is designed in consideration of several aspects: real-time traffic control, control task scheduling, and traffic control based on control performance, network utilization and reliability. The new protocols will be scheduled by a flexible transmission mechanism in the framework for control tasks with different real-time requirements. A priority-based algorithm will be developed for implementing the transmission mechanism. Besides the real-time performance, important requirements in NCSs include network clock synchronization and fault-tolerance. Related achievements will be integrated into the framework to enhance real-time quality and reliability of NCSs.