H-Infinity Control Design Considering Packet Loss as a Disturbance for Networked Control Systems

Takashi OGURA  Kentaro KOBAYASHI  Hiraku OKADA  Masaaki KATAYAMA  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E100-A   No.2   pp.353-360
Publication Date: 2017/02/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E100.A.353
Type of Manuscript: Special Section PAPER (Special Section on Reliable Communication and Control)
networked control,  packet loss,  control design,  robust control,  H-infinity control,  LQ control,  

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This paper studies H control for networked control systems with packet loss. In networked control systems, packet loss is one of major weakness because the control performance deteriorates due to packet loss. H control, which is one of robust control, can design a controller to reduce the influence of disturbances acting on the controlled object. This paper proposes an H control design that considers packet loss as a disturbance. Numerical examples show that the proposed H control design can more effectively reduce control performance deterioration due to packet loss than the conventional H control design. In addition, this paper provides control performance comparisons of H control and Linear Quadratic (LQ) control. Numerical examples show that the control performance of the proposed H control design is better than that of the LQ control design.