Hierarchical Triple-Maglev Dual-Rate Control Over a Profibus-DP Network

Multirate control with incomplete information over Profibus-DP network

Implementation of Networked Control System using a Profibus-DP Network

As numerous sensors and actuators are used in many automated systems, various industrial networks are adopted for real-time distributed control. In order to take advantages of the networking, however, the network implementation should be carefully designed to satisfy real-time requirements considering network induced delays. This paper presents an implementation scheme of a networked control sy...

An Efficient Simulator for the Profibus-dp Mac Layer Protocol

The main goal of this paper is to develop an integrated general-purpose simulator for the Profibus MAC layer protocol in order to evaluate the steady-state behavior of this protocol, under a variety of possible operational conditions in a faulty communication channel. This protocol is part of the Profibus-DP system used widely as a standard and popular industrial communication system. This work...

The effects of acyclic traffic on Profibus DP networks

Profibus DP is a very popular fieldbus included in the IEC 61158 International Standard. The features of such a fieldbus make it particularly suitable for cyclic operations, but it also foresees the possibility of performing acyclic activities between masters and slaves. A second (undesired) type of acyclic traffic is that generated by the access to services of the Profibus data link layer prot...

Dual-rate adaptive control

An operator, called the dual-rate transfer function, describing a dual-rate discretized continuous-time system is presented. It can be easily related to single-rate transfer functions of the same system, and its parameters can be experimentally estimated. Based on these models, two adaptive control strategies are outlined, and some results are illustrated by a simple example. Copyright 0 1996 E...