Design of Networked Control Systems With Explicit Compensation for Time-Delay Variations

被引：32
|
作者：
Martins, Euler C. [1 ,2 ]
Jota, Fabio G. [1 ]
机构：
[1] Univ Fed Minas Gerais, Dept Elect Engn, BR-31270901 Belo Horizonte, MG, Brazil
[2] Fed Ctr Technol Educ, Dept Electrotech, Belo Horizonte, MG, Brazil
来源：
IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS PART C-APPLICATIONS AND REVIEWS | 2010年 / 40卷 / 03期
关键词：
Digital controllers; effects of time delay; networked control systems (NCSs); time-delay compensation; PREDICTIVE CONTROL; MULTIRATE CONTROL; STABILITY; IMPLEMENTATION;
D O I：
10.1109/TSMCC.2009.2036149
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
In this paper, the effects of network delay among interconnecting elements of a distributed computer network control system are analyzed. Experimental tests have been accomplished to show the influence of the combined effects of the network delay (between sensor/controller and controller/actuator) on the overall performance of a feedback control system. For this purpose, a proportional-plus-integral (PI) controller has been used. This controller has been designed, using the well-known direct synthesis method and implemented in a didactic networked control system platform. Corresponding (z-transform) difference equations have been used, assuming time-triggered (regular) samplings. The augmented PI controller (with compensation of the control signal and estimation of missing measurements) is developed. Stability analysis is performed to verify the validity of this scheme. The results presented in the paper show that the dynamic behavior of the closed-loop system can be improved using the proposed technique.
引用
收藏
页码：308 / 318
页数：11
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