Conference Program of WCICA 2012

Conference Program WCICA 2012
system is analyzed, the necessary and sufficient condition of Hopf bifurcation
and periodic motion’s stability are given, and the influence of
supercritical and subcritical bifurcation on torsional vibration of rotating
mechanical drive system is analyzed under the condition of parametric
resonance and internal resonance. Last, the numerical simulation
verifies the results. A significant contribution of this study is to ensure
smooth running of rotating machinery system, and provide a theoretical
basis for the future design of mechanical component.
◁ PSaA-23
Performance Bound of Parallel Cascade Control System Based on
Minimum Variance and Generalized Minimum Variance Benchmarking,
pp.1334–1339
Guo, Jian Wen
Du, Wenli
Qian, Feng
East China Univ. of Sci. & Tech.
automation Inst.
East China Univ. of Sci. & Tech.
Abstract - The procedure is reviewed based on minimum variance (MV)
and Diophantine decomposition for the parallel cascade control system.
A novel method is derived based on the previous methods in this paper.
The optimal controllers can be obtained directly by using the decomposition
technique of Diophantine equations other than the closed loop
operating data. Besides, the theoretical performance bound can be
computed simultaneously. The generalized minimum variance (GMV)
Benchmarking for parallel cascade control system is also put forward
. The results of the proposed methods are demonstrated through a
simulation example and compared with the previous results.
◁ PSaA-24
Robust Formation Control of a class of Multi-agent Systems by Output
Regulation Approach, pp.1412–1417
Sun, Weijie
Qiao, Yupeng
Suo, Xudong
south china Univ. of Tech.
Chinese Acad. of Sci.
South China Univ. of Tech.
In this paper, we study the robust formation control problem of a class of
multi-agent systems based on the generalized internal model principle.
We show that this problem finally boils down to a robust stabilization
problem of a nonlinear system, the solution of which can be solved
by using the existing robust stabilization technique. The efficiency of
the proposed design method is verified by one typical formation control
problem of multi-agent systems.
◁ PSaA-25
A fractional-order multi-scroll hyperchaotic Chua system and its synchronization,
pp.1436–1441
Xi, Huiling
Guangzhou Univ. of Tech.;North Univ. of China
In this paper, a four-dimensional fractional-order multi-scroll hyperchaotic
Chua system is proposed. By utilizing the fractional calculus
theory and computer simulations, it is found that multi-scroll hyperchaotic
attractor exists in this fractional-order Chua system with order
less than 4. Furthermore, synchronization between two fractional-order
multi-scroll hyperchaotic Chua systems is achieved by a suitable linear
controller applied to the response system and the corresponding
numerical simulations are performed.
◁ PSaA-26
UKF based Robust Attitude Control for Helicopter, pp.1442–1446
Song, Qi Shenyang Inst. of Automation, Chinese Acad. of
Sci.
Han, Jianda
JIANG, Zhe
Shengyang Inst. of Automation,CAS,China
Chinese Acad. of Sci.
In order to handle the model uncertainty and the external disturbance,
a robust attitude control method for helicopter robots is proposed in this
paper. Unscented Kalman Filter (UKF) and backstepping technique
are adopted in the attitude control design. Model-based backstepping
control is presented to keep the desired helicopter attitude. UKF is
employed for online estimation of both motion states and model errors
of the helicopter. Such estimation results are further incorporated into
the controller of helicopter. The backstepping control enhanced by real
time model errors feedback can achieve a robust tracking performance
even with the occurrence of external disturbance. Simulations conducted
on the helicopter illustrate the effectiveness of the proposed attitude
control.
◁ PSaA-27
Global asymptotic stability of uncertain nonlinear system with input constraint,
pp.1483–1488
Zhou, Yingjiang
Sun, Changyin
Wang, Li
Zhang, Jingmei
southeast Univ.
Southeast Univ.
Southeast Univ.
Southeast Univ.
In this paper, the problem of global asymptotic stability of a class of
uncertain nonlinear system with input constraint is considered by using
the development of the adding a power integrator technique. And in
order to analyze the effect of the input constraint, the auxiliary design
system is used. In addition, if the system satisfies some conditions, the
global finite time stability of the nonlinear system can be proved. Finally,
simulations are listed to illustrate the effectiveness of the proposed
result.
◁ PSaA-28
Multiperiodicity and Attractivity Analysis for a Class of High-order
Cohen-Grossberg Neural Networks, pp.1489–1494
Sheng, Li
Gao, Ming
China Univ. of Petroleum (East China)
Shandong Univ. of Sci. & Tech.
In this paper, the multiperiodicity of a class of high-order Cohen-
Grossberg neural networks (HOCGNNs) with special activation functions
is discussed by using analysis approach and decomposition of
state space. The activation functions of this class of neural networks
consist of nondecreasing functions with saturation, standard activation
functions of cellular neural networks, etc. It is shown that the n-neuron
HOCGNNs can have 2 n locally exponentially attractive periodic orbits
located in saturation regions. In addition, a condition is derived for
ascertaining the periodic orbit to be locally exponentially attractive and
to be located in any designated region. Finally, an example is given to
show the effectiveness of the obtained results.
◁ PSaA-29
Delay-dependent Stability for Uncertain Stochastic Neural Networks
with Distributed Delays, pp.1495–1500
Gao, Ming
Sheng, Li
Shandong Univ. of Sci. & Tech.
China Univ. of Petroleum (East China)
This paper deals with the problem of delay-dependent robust stability
for a class of uncertain stochastic recurrent neural networks (USRNNs)
with discrete and distributed delays. In such systems, both parameter
uncertainties and stochastic perturbations are taken into account. The
parameter uncertainties are norm-bounded and the stochastic perturbations
are in the form of a Brownian motion. Based on the Lyapunov
stability theory and the linear matrix inequality (LMI) technique, some
delay-dependent stability criteria are derived, which guarantee the global
robust asymptotic stability in the mean square for the USRNNs. Two
simulation examples are provided to illustrate the effectiveness of the
proposed criteria.
◁ PSaA-30
Cutting-in Control with Smooth Switching Strategy for Doubly-fed Wind
Power Generator, pp.1513–1517
Xiao, Yunqi
Lv, Yuegang
North China Electric Power Univ.
North China Electric Power Univ.
Synchronized cutting-in control strategy and power control strategy after
gird-connection of doubly-fed wind power generator is analyzed in
detail. Since two different generator control systems are employed between
cutting-in moment, a smooth switching strategy is presented, too.
Simulating results are shown that the synchronized cutting-in control s-
trategy adopted can meet grid connecting requirement, and switching
strategy proposed can accomplish smooth switching control process of
rotor exacting voltages with stator currents steadily raising. This research
has practical application value.
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