Conference Program of WCICA 2012

Conference Program WCICA 2012
SHI, Juan
Yan, Yan
Yu, Xinghuo
Victoria Univ.
Dalian Maritime Univ.
RMIT Univ.
In this paper, a simplex type dynamic output feedback variable structure
control (VSC) for the stabilization of a nonminimum phase open-loop
unstable MBC500 magnetic bearing system is presented. An observer
type sliding mode controller is designed for the unstable nonminimum
phase system. The performance of the designed sliding mode controller
is compared with those of a conventional controller, a controller
designed based on analytical interpolation approach, and a fuzzy logic
controller (FLC). Simulation results shown that the designed observer
type sliding mode controller has superior performance than the other
control approaches as it provides the best transient and steady-state
responses with less control efforts.
◮ FrB04-5 17:10–17:30
Second Order Sliding Mode Control of Pan-tilt Joint in Modular Manipulator,
pp.2188–2193
Liu, Shirong
Chen, Jianye
Hangzhou Dianzi Univ.
Hangzhou Dianzi Univ.
In this paper, a new approach for the robust control of pan-tilt joint in
modular manipulator is proposed. A MIMO second order sliding mode
controller is designed by some particular properties of pan-tilt joint.
The proposed approach can eliminate the high frequency chatter and
improve the control robustness and accuracy as the same as classical
sliding mode. The designed controller also works well even under
the lower frequency control, and such relaxes the limit to controlled
plants. Simulations have shown the effectiveness of the proposed control
method in the trajectory tracking of pan-tilt joint.
◮ FrB04-6 17:30–17:50
Sliding Mode Variable Structure Control Based on Exact Linearization
Mode of Nonlinear System, pp.2878–2881
Wang, Ya-hui
Xia, Zhifeng
Zhang, Tong
Beijing Univ. of Civil Engineering & Architecture
Department of Automation Engineering Beijing
Univ. of Civil & Architecture Engineering
Beijing Univ. of Architecture & Civil Engineering
Exact linearization is a traditional method for nonlinear system in the
nonlinear system theory, the basic idea of which is to linearize the w-
hole or parts of a nonlinear system in the way of nonlinear coordinate
transformation and nonlinear state feedback. The input and output of
the nonlinear system can be expressed as a linearized model that can
be designed using linear system design method. In order to enhance
the robustness of the designed system, the robust control strategy is
adopted by the system that is linearized via feedback. As a result,
the control law is composed of feedback linearization control and robust
control. Sliding mode variable structure control is a robust control
method which is adopted in this paper as a robust control strategy for
the exact linearized system.
FrB05 15:50–17:50 Room 203E
Control Theory (II)
Chair: Han, Qing-Long
Co-Chair: Ren, Li-hong
Central Queensland Univ., Australia
China Univ. of Petroleum
◮ FrB05-1 15:50–16:10
A New Variable Pairing Method and Its Application in Non-square Multivariable
Systems, pp.2215–2220
Ren, Li-hong
LUO, Xiong-lin
China Univ. of Petroleum
China Univ. of Petroleum
Variable pairing is important for the selection of decentralized control
structure. A new method is proposed basing on the open-loop step response,
according to ISE. This method is first used in the variable pairing
of square multivariable systems , then is extended to non-square
multivariable systems. Non-square multivariable systems are squared
down by this method. Typical cases including square and non-square
systems are employed to show that both steady-state and transient system
properties are considered in the proposed method and this method
is useful for the reasonable variable pairing .
◮ FrB05-2 16:10–16:30
Synchronization for Lur’e Type Complex Dynamical Networks with
Time-Varying Delay Based on Linear Feedback Controller, pp.1389–
1394
Duan, Wenyong
Cai, Chenxiao
Zou, Yun
Nanjing Univ. of Sci. & Tech., China
nanjing Univ. of Sci. & Tech.
Nanjing Univ. of Sci. & Tech., China
This paper discusses the synchronization problem for a class of Lur’e
type complex dynamical networks with time-varying delay. Based on a
Lyapunov-Krasovskii functional, some new delay-dependent synchronization
criteria are derived in the form of linear matrix inequalities by
employing a delay decomposition and free matrix method. And a strategy
for synchronization is presented based on a linear feedback controller.
Some numerical examples are presented to illustrate the effectiveness
and advantage of the proposed synchronization criteria. More
less conservative is shown with comparison to the existing results.
◮ FrB05-3 16:30–16:50
Distributed Estimation For Discrete Time Systems With Time-Varying
Observation Delay, pp.1881–1886
Wang, Wei
Han, Chunyan
Feng, Shulin
Shandong Univ.
Univ. of JInan
Shandong Univ.
In this paper, we will consider the problems where observation delay
is time-varying and design distributed estimators by combining a consensus
strategy. The optimal local estimator for every node with timevarying
observation delay is first designed, which plays an important
role in the distributed estimator design. Then the optimal distributed
estimator for any choice of the consensus gain is proposed by adding a
modification on the optimal local estimator. The suboptimal estimator is
proposed by approximating the Riccati equations of optimal distributed
estimator. Finally, a sufficient condition for asymptotical stability of the
suboptimal distributed estimator is given.
◮ FrB05-4 16:50–17:10
Global Stabilization for a Class of Integrator Chain with Bounded Control,
pp.2245–2250
Fang, Haijun
MKS Instrument
In this paper, a clase of integrator chain systems with bounded control
is considered. A nested control law is proposed so that the closed-loop
system is globally stabilized with the bounded control. Effectiveness of
the proposed control law will be shown through simulation.
◮ FrB05-5 17:10–17:30
Estimation of the domain of attraction for asymmetric saturated linear
systems via Polyhedral Lyapunov Functions, pp.1253–1258
Zhao, Guanglei
Wang, Jingcheng
Shanghai JiaoTong Univ.
electronic & electric engineering
This paper considers the problem of estimating the domain of attraction(DA)
for continuous-time single-input asymmetric saturated linear
systems. The stability analysis is implemented based on the polyhedral
Lyapunov function rather than on the classical quadratic Lyapunov function.
According to the saturation property, the saturated linear systems
are regarded as switched linear systems, and a new sufficient condition
for a polytope to be an estimation of the DA is derived. Moreover,
a novel algorithm is proposed to compute the estimation of the DA. The
effectiveness of the developed methods is illustrated with numerical examples
◮ FrB05-6 17:30–17:50
Output feedback stabilization of polytopic-type uncertain discrete systems
with interval-like time-varying state and input delays, pp.2119–
2124
Ge, Xiaohua
Jiang, Xiefu
Han, Qing-Long
Central Queensland Univ.
hangzhou dianzi Univ.
Central Queensland Univ., Australia
The output feedback stabilization of polytopic-type uncertain discrete
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