An Approach Based on an Adaptive Multi-rate Smith Predictor and Gain Scheduling for a Networked Control System: Implementation over Profibus-DP

被引：10
|
作者：
Cuenca, Angel [1 ]
Salt, Julian [1 ]
Casanova, Vicente [1 ]
Piza, Ricardo [1 ]
机构：
[1] Univ Politecn Valencia, Dept Ingn Sistemas & Automat, Inst Univ Automat & Informat Ind, Valencia 46022, Spain
来源：
INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS | 2010年 / 8卷 / 02期
关键词：
Networked control system; network-induced delay; Smith predictor; PID controller tuning; Lyapunov theory; QUALITY-OF-CONTROL; DESIGN;
D O I：
10.1007/s12555-010-0237-1
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents a control strategy to face time-varying delays induced in a Networked Control System (NCS). The delay is divided into two parts: the largest one (an integer multiple of the bus cycle) is compensated by means of an adaptive multi-rate Smith predictor, and the smallest one (whose value is strictly smaller than the bus cycle) via a gain scheduling approach based on root locus contour and linearization techniques. The gains to be scheduled belong to a multi-rate PID controller. Control system stability is studied by means of Lyapunov theory. Simulation results and the implementation on a test-bed Profibus-DP environment illustrate that this control structure can maintain NCS performance and stability, despite the considered delays.
引用
收藏
页码：473 / 481
页数：9
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