Conference Program of WCICA 2012

Conference Program WCICA 2012
Saturday, July 7, 2012
PL-4 8:30-9:30 Room 305
Plenary Lecture IV
Chair: Chen, Ben M.
National University of Singapore
◮ PL-4 8:30-9:30
Cooperative Output Regulation of Multi-Agent Systems
Huang, Jie
Chinese University of Hong Kong
In this talk, we will describe the cooperative output regulation problem
for multi-agent systems. The formulation of this problem generalizes
the leader-following consensus problem in the sense that the problem
simultaneously addresses asymptotic tracking and disturbance rejection,
accounts for large model uncertainty, and accommodates a general
leader system. Like the full information output regulation problem,
this problem can be handled by the feedforward control approach and
the internal model approach. These two approaches can also be used
to handle other control problems of multi-agent systems such as formation,
rendezvous, flocking. We will also briefly overview some recent
results on this problem, and point out some possible future research
topics on this problem.
PL-5 9:50-11:50 Room 305
Plenary Lecture V
Chair: Tarn, Tzyh-Jong
Washington University, USA
◮ PL-5 9:50-11:50
Memristor: Past, Present, and Future
Chua, Leon O.
University of California at Berkeley, USA
Although the memristor was first postulated axiomatically in 1971, and
although a proof of principle had been published via a bulky circuit using
operational amplifiers, it was the hp publication of a nano memristor in
the 1 May 2008 issue of Nature that had triggered worldwide attention,
with the number of publications on memristor applications exploding at
an exponential rate. This 2-hour lecture presents the circuit and system
theoretic concept of the memristor and shows why it had generated so
much unprecedented interest in both academia and industry. Among
other things, it will illustrate why memristors will replace flash memories
and DRAMs in the near future, and why brains are made of memristors.
It will also show how action potentials (spikes) from the Hodgkin-Huxley
axon model are generated by the sub-critical Hopf bifurcation nonlinear
dynamics of the sodium and potassium memristor Hodgkin-Huxley neuron
model operating near the edge of chaos.
SaA01 13:30–15:30 Room 203A
Networked Control
Chair: Wang, Wei
Co-Chair: Zhai, Feng
Information school, Renmin Univ. of China
China Electric Power Research Inst.
◮ SaA01-1 13:30–13:50
The Optimization Method for a Kind of Uncertain Networked Systems
Based on the Stripping Principle and Optimal Control, pp.964–969
Wang, Wei
Information school, Renmin Univ. of China
In this paper, based on using the stripping principle and optimal control,
we consider the method of optimization for a kind of uncertain networked
systems which are composed of some heteromorphic subsystems.
The method can be summarized as follows. Facing the complex
structure of networked control system and the unavoidable uncertainties
and/or disturbances, we use the integral feedback with a variable
gain for each of the subsystems to remove or eliminate the interconnected
parts, uncertainties and disturbances. So we translate the control
problem of networked systems into that of decentralized control.
And then we use optimal control for the remainder parts of the subsystems
respectively. Then the fastness of the networked systems can be
improved. The theoretical analysis and simulation results are provided
to indicate the effectiveness of the proposed approach.
◮ SaA01-2 13:50–14:10
Uplink Dead Zone Analysis for Co-Channel Two-Tier Femtocell Network,
pp.991–995
Han, Qiaoni
Guan, Xinping
Ma, Kai
Liu, Zhixin
Yanshan Univ.
Yanshan Univ.
Yanshan Univ.
Inst. of Electrical Engineering,Yanshan Univ.
This paper is concerned with the dead zone problem of uplink communication
in two-tier femtocell network. In the uplink communication,
the interference generated by a macrocell user at the edge of the
macrocell base station (MBS) coverage area may cause the signal-tointerference-plus-noise
ratio (SINR) received at the nearby femtocell
base station (FBS) below the requirement, and the region in which the
nearby FBS can not meet its SINR requirement is called a Femtocell
Dead Zone (FDZ). In order to guarantee the quality-of-service (QoS)
of macrocell users and femtocell users, the transmission power of femtocell
users should be controlled properly. In this work, the uplink interference
scenario that exists between a femtocell and a macrocell is
modeled and discussed in detail, and then, the fundamental limit of the
achievable SINR at MBS and FBS is shown. Numerical results present
a straightforward way to establish the FDZ and show the impact of the
uplink interference from macrocell user on the QoS of the nearby femtocell
user.
◮ SaA01-3 14:10–14:30
Security Protection Technology of Intelligent Electricity Selling Terminal,
pp.1005–1009
Zhai, Feng
Zhao, Bing
Cen, Wei
China Electric Power Research Inst.
China Electric Power Research Inst.
China Electric Power Research Inst.
In order to solve the problem of power user’s difficulty for powerpurchase,
intelligent electricity selling terminal is widely used in power
selling system. Data’s secure transmission and storage is the bases for
intelligent electricity selling terminal to implement its function, ensuring
the security of data has become the key technologies to be resolved for
intelligent electricity selling terminal. Based on the SIM1 data encryption
technology, PKI digital certification authentication technology and
SSL communication technology, this paper has proposed the realization
mode of the data’s safety protection technology between intelligent
electricity selling terminal and power selling master station system.
◮ SaA01-4 14:30–14:50
Improved delay-dependent stability criteria for networked control systems,
pp.892–897
Song, Yan
Wang, Jingcheng
electronic & electric engineering
electronic & electric engineering
This paper is concerned with robust H∞control of uncertain networked
control systems with interval time-varying delay and packet dropout.
For less conservative transformation, we propose a new integral inequality
by dividing time interval into two subintervals and defining an
appropriate scalar instead of introducing free weighting matrix. Based
on this integral inequality, a new delay-dependent stability criteria for
the systems are obtained by solving a convex domain. Moreover, we
may obtain the feasible solutions by solving a minimization problem in
terms of linear matrix inequalities. Finally numerical examples are used
to illustrate the effectiveness and validity of the proposed methods.
◮ SaA01-5 14:50–15:10
Stability Analysis and Control of Bifurcation in a TCP Fluid Flow Model
of Wireless Networks, pp.1026–1030
Liu, Feng
Wang, Hua O.
Guan, Zhi-Hong
China Univ. of GeoSci.
Boston Univ.
Huazhong Univ. of Sci. & Tech.
In this paper the bifurcation behavior of a TCP fluid flow model for Internet
congestion control in Wireless Networks is investigated. These
bifurcation behaviors may cause heavy oscillation of average queue
length and induce network instability. An impulsive control method was
proposed for controlling bifurcations in the Internet congestion control
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