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http://dx.doi.org/10.5302/J.ICROS.2012.18.8.768

Robust Real-Time Wireless Control Platform Compensating for Packet Loss  

Choi, Rock-Hyun (Daegu Gyeongbuk Institute of Science & Technology)
Lee, Sang-Cheol (Daegu Gyeongbuk Institute of Science & Technology)
Yoo, Joon-Hyuk (Daegu University)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.18, no.8, 2012 , pp. 768-773 More about this Journal
Abstract
Packet loss compensation techniques are increasingly important to stable remote control over wireless communication in WNCS (Wireless Networked Control Systems). Its time varying channels, limited bandwidth, interference, and poor signal not only leads to packet loss or latency, but also can negatively affect performance and system stability. This paper presents a compensation technique exploiting an EWMA (Exponentially Weighed Moving Average)-based value estimator to clarify the influence of packet loss on the overall WNCS behavior. As an example of actuator to be remotely controlled, a rotary-type inverted pendulum has been considered, and modeled. Performance evaluation results through Matlab/Simulink and Truetime co-simulation confirm the superiority of the proposed value estimation method over previous approaches.
Keywords
WNCS; EWMA; packet loss;
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Times Cited By KSCI : 1  (Citation Analysis)
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