Conference Program of WCICA 2012

WCICA 2012
Book of Abstracts: Friday Sessions
bilinear-grid search method finely. Experiment results show that the improved
method has a better performance both at accuracy and speed,
moreover, which can avoid excessive values and enhance the stability.
◁ PFrB-33
Fundamental Issues of Networked Decoupling Control Systems,
pp.827–830
Huang, Congzhi
Bai, Yan
North China Electric Power Univ.,Beijing,
P.R.China
north china electric power Univ.
The concept of networked decoupling control system (NDCS for short)
is proposed and its fundamental issues are investigated, including its
configurations, network-induced delays, and data packet dropout. With
the proposed concepts of node-device connectivity matrix and network
transmission matrix, three typical configurations of NDCSs are also p-
resented and the locations of networks in the system are clearly pointed
out. The proposed approach can provide a reference for characterizing
an NDCS with other much more complicated configurations.
◁ PFrB-34
Networked Real-time Controller Based on PC/104, pp.831–834
An, Bao-ran
Harbin Inst. of Tech.
The networked real-time controller designed in this paper is based on
the hardware platform of PC/104 CPU and DAQ, and the operating system
of real-time Linux kernel, and it is developed with the server of algorithm
receiving, data monitoring and the networked real-time application,
it successfully realizes the real-time control and online monitoring.
The final experimental verification shows that the real-time capability of
the controller can reach the level of microseconds, which can satisfy
the general requirements of industrial control.
◁ PFrB-35
Co-design-based H∞Control for Wireless Networked Control Systems,
pp.835–839
LI, Jinna
Liu, Dan
Li, Minghui
Yu, Haibin
Shenyang Inst. of Automation, Chinese Acad. of
Sci.
Shenyang Univ. of Chemical Tethnology
Shenyang Univ. of Chemical Tech.
Shenyang Inst. of Automation, Chinese Acad. of
Sci., China
This paper investigates H∞control for the networked control systems by
the approach of jointly controlling network systems and control systems.
Based on the available power and rate models, the argument systems
of networked control systems combined with the plant are constructed.
Sufficient conditions for asymptotical stability with H∞norm bound
is obtained in terms of Lyapunov theory and linear matrix inequality
(LMI) technique, which can guarantee the actual signal-to-interference
ratio (SNR) tracking the desired SNR, stability of the control systems, as
well as optimal capability of resisting disturbance. Finally, a numerical
example is given to illustrate the effectiveness of the proposed method.
◁ PFrB-36
Distributed Output Regulation of Switching Multi-agent Systems Subjectto
Input Saturation, pp.840–845
Wang, Xiaoli
Ni, Wei
Yang, Jie
Harbin Inst. of Tech. at Weihai
Nanchang Univ.
Chinese Acad. of
In this paper, we consider the distributed output regulation problem
of linear multi-agent systems subject to input saturation with switching
topology. It is natural to take the semiglobal frame for distributed output
regulation with input saturation which allows us to use distributed linear
feedback controller. The basic problem is to design distributed feedback
controller for the considered multi-agent systems subject to input
saturation in order to achieve asymptotically tracking and disturbance
rejection. A systematic distributed linear design approach based on the
solvability condition is proposed for the semiglobal distributed output
regulation with switching interconnection topology.
◁ PFrB-37
Kernel Based Nonlinear Regression for Internet Round Trip Time-delay
Prediction, pp.852–856
Yang, Yanhua Shenyang Inst. of Automation, Chinese Acad. of
Sci.
Time delay degrades the performances of Internet-based control systems
or teleoperation system, and even causes instability of closedloop
systems. If the Round Trip Time-delay (RTT) is acquired exactly
previously, it is helpful to improve the performance of Internet-based
control systems. Therefore, analysis or prediction for Internet time
delay has become a hot research problem. This paper proposes the
long-range nonlinear autocorrelation of RTT based on the real data of
Internet delay measurements. Then, according to the characters, we
present a sparse matrix based kernel regression (SMKR) scheme to
predict RTT. Finally, simulation results show that the forecasting precision
using this method is higher than that using sparse multivariate
linear regressive (SMLR) method, which demonstrates the validity of
the proposed approach.
◁ PFrB-38
XCP Bandwidth Compensation Algorithm Based on Sliding Mode Control
in Time Vary Network, pp.857–862
YIn, Fengjie
liaoning Univ.
Network propagation delay and system parameters are always changing,
to this case, the paper applied sliding mode control theory to set
reasonable output bandwidth in dynamic network for XCP, and thus to
compensate the uncertainty existing in the feedback factor. The source
adjusted the sending rates according to it so that the network output
could have high throughput and a smaller queue length. The algorithm
has strong robustness caused by the network jitter due to the uncertainty
of network model and the time change of the network parameters, as
well as the time delay of the system state. Simulation results show
that the algorithm can improve the bandwidth utilization effectively in
dynamic networks, and compare with PII-XCP algorithm, this algorithm
can adapt to the dynamic nature of the network and time delay.
◁ PFrB-39
H-infinity State Estimation for Networked Systems with Markov Interval
Delay, pp.881–885
Zhang, Yong
Liu, Zhenxing
Zhou, Lei
Wuhan Univ. of Sci. & Tech.
WuHan Univ. of Sci. & Tech.
Nantong Univ.
In this paper, the H-infinity state estimation problem for networked systems
with Markov interval delay characteristic is investigated. A Markov
chain is introduced to describe the delayed networked systems, considering
the difficulty of obtaining the ideal knowledge on all transition
probabilities, and a Markovian jump systems model with partially unknown
transition probabilities is established. Based on the obtained
new model, by utilizing observer as state estimation generator, the addressed
state estimation problem is converted into H-infinity attenuation
problem. Then, with the help of stochastic Lyapunov-Krasovskii
functional approach, the sufficient condition for the desired modedependent
observer is constructed in terms of linear matrix inequalities,
which depend on not only delay interval but also partially known
transition probabilities. The effectiveness of the proposed method is
demonstrated by simulation examples.
◁ PFrB-40
Simulation Research of Networked Control System Based on Ethernet
and Matlab, pp.898–902
Peng, Daogang
Lin, Jiajun
Zhang, Hao
LI, Hui
Shanghai Univ. of Electric Power
East China Univ. of Sci. & Tech.
Shanghai Univ. of Electric Power
Shanghai Univ. of Electric Power
Networked control system, as a hotspot in the research fields of control
theory and control engineering applications, is widely concerned by researchers
at home and abroad. The expansibility, maintainability and
reliability of industrial process control system can be greatly improved
with the application of Ethernet technology. In this paper, the network
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