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Proceedings ArticleDOI

On the performance of the PIDPLUS controller in wireless control systems

TLDR
The results suggest that PIDPLUS can well be used for wireless control, but better performance could be attained by further development of the controller tuning methodology.
Abstract
The PIDPLUS algorithm is one of the candidates to be used in wireless automation systems. The control performance of this algorithm under packet losses is investigated in the paper. First, the performance of PIDPLUS is evaluated with respect to packet loss rates for a general first-order plus time-delay process, a model widely used for controller tuning. This simulation study reveals how the performance is affected by packet losses in a wireless control system. Secondly, we will elaborate on the implementation of PIDPLUS and discuss its design, tuning and performance in wireless control systems in light of an unstable case process. The results suggest that PIDPLUS can well be used for wireless control, but better performance could be attained by further development of the controller tuning methodology.

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Citations
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Book ChapterDOI

Fractional Order Controller Tuning Using Swarm and Evolutionary Algorithms

TL;DR: This chapter looks at the basics of optimizing an objective function with the help of intelligent algorithms and these concepts are then applied to design controllers for two different scenarios, where traditional methods are too unwieldy to be used.
Journal ArticleDOI

A Wireless Control System with Mutual Use of Control Signals for Cooperative Machines

TL;DR: Using the nature of wireless, a new wireless control scheme for maintaining the synchronization performance under packet loss conditions is proposed, and numerical examples confirm the superiority of the proposed scheme from the view-point of the synchronization of the motion of the plants.
Proceedings ArticleDOI

Client-server based wireless networked control system

TL;DR: Experimental set-up and simulation results show the feasibility and reliability of the WNCS for a FlyWheel Position Control System when it is compared with more traditional networked control systems.
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Evaluation of aperiodic control for energy saving in wireless networked control systems

TL;DR: Experimental results in a WNCS testbed prove that aperiodic control strategies can considerably reduce the wireless sensor transmissions, saving their battery lifetime, without decreasing the W NCS control performance.
Journal ArticleDOI

Intelligent PID Product Design

TL;DR: The design includes a PID algorithm with diverse standard options and algorithm extensions for wireless/event-driven control and for surge control, and a user-friendly interface provides insight into a loop's current state and history events.
References
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Journal ArticleDOI

Revisiting the Ziegler-Nichols step response method for PID control

TL;DR: Insight into the properties of PI and PID control and simple tuning rules that give robust performance for processes with essentially monotone step responses are found.
Journal ArticleDOI

Recent and Emerging Topics in Wireless Industrial Communications: A Selection

TL;DR: This paper discusses a selection of promising and interesting research areas in the design of protocols and systems for wireless industrial communications that have either emerged as hot topics in the industrial communications community in the last few years, or which could be worthwhile research Topics in the next few years.
Journal ArticleDOI

Wireless Technology in Industrial Networks

TL;DR: Key issues coming up in wireless fieldbus and wireless industrial communication systems are discussed: fundamental problems like achieving timely and reliable transmission despite channel errors; the usage of existing wireless technologies for this specific field of applications; and the creation of hybrid systems in which wireless stations are incorporated into existing wired systems.
Proceedings ArticleDOI

WirelessHART: Applying Wireless Technology in Real-Time Industrial Process Control

TL;DR: An introduction to the architecture of WirelessHART is given and several challenges the implementation team had to tackle during the implementation are described, such as the design of the timer, network wide synchronization, communication security, reliable mesh networking, and the central network manager.
Journal ArticleDOI

Simple stability criteria for systems with time-varying delays

TL;DR: Simple but powerful criteria of stability are presented for both continuous-time and discrete-time systems and using these criteria, stability can be checked in a closed loop Bode plot, making it easy to design the system for robustness.