Conference Program of WCICA 2012

Conference Program WCICA 2012
is defined based on the dynamic variable relation matrix and steady s-
tate array. Several cases are studied and the comparisons with existing
methods indicate that the proposed method is a useful tool to give the
best pairing scheme.
◮ SaB04-2 16:10–16:30
Study on the Temperature Dual Control of CSTR with Coil Cooling and
Jacket Cooling and Application, pp.3359–3363
Wang, Zaiying
Xi’an Univ. of Sci. & Tech.
Abstract―The CSTR is one of important equipments in chemical industry,
and CSTR is above 90% of reactors used in main chemosynthesis
material(plastic, synthetic rubber, synthetic fibre)production. Temperature
dual control system solution is proposed based on analysis of
CSTR structure with coil cooling and jacket cooling, and of insufficiency
for temperature single loop control. The dual control system takes
advantage of both coil cooling and jacket cooling so that both dynamic
and static state performances of the control system get more satisfactory.
Through theory analysis and semi-physical simulation, the advantage
of the CSTR temperature dual control system is verified in control
precision and dynamic response, and energy-saving and consumption
reducing.
◮ SaB04-3 16:30–16:50
Saturated Output Feedback High-Gain Control for the Water-level of U-
Tube Steam Generators, pp.3378–3383
Dong, Zhe
Tsinghua Univ.
U-tube steam generator (UTSG) is one of the most crucial facilities
in a pressurized-water nuclear reactor (PWR). Water level control of
a UTSG is of major importance in order to secure the sufficient cooling
inventory for the reactor core and, at the same time, to prevent the damage
of turbine blades. Due to high nonlinearity and nonminimum phase
characteristics of the UTSG dynamics and the fact that the feedwater
flowrate is bounded, it is very necessary to establish an effective saturated
nonlinear water-level controller. In this paper, a saturated output
feedback high-gain control (SOFHC) for nonlinear SISO systems is p-
resented. Furthermore, the SOFHC is applied to control the water-level
for the UTSG of a nuclear heating reactor (NHR). Numerical simulation
results show the high performance of the SOFHC and the influence of
the feedback gain and maximal feedwater flowrate to the control performance.
◮ SaB04-4 16:50–17:10
Incremental PCA based online model updating for multivariate process
monitoring, pp.3422–3427
Hou, Ranran
Wang, Huangang
Xiao, Yingchao
Xu, Wenli
Tsinghua Univ.
Tsinghua Univ.
Tsinghua Univ.
Tsinghua Univ.
Principle Component Analysis (PCA) has been used widely for process
monitoring in industry systems. But the data drifting problem, which
commonly exists in the actual process, disables the monitoring model,
and subsequently makes the monitoring system come out with plenty of
false alarm. Therefore the efficiency of PCA based process monitoring
is degraded in practical use. This paper presents an incremental PCA
based online model updating method for multivariate process monitoring.
The proposed method is based on the characteristic that industry
processes preserve the correlation between variables under normal
production conditions, which enables the method update the direction
of loading vectors as well as the mean value and the standard deviation
of the model automatically. Our method has low computational
complexity, limited storage demand and robust to normal data drifting.
Finally, the performance of the proposed algorithm is compared with
conventional PCA and EWMA-PCA methods on a benchmark dataset
of semiconductor etch process, through which our method is proved to
be efficient.
◮ SaB04-5 17:10–17:30
An Approach to Rainfall Simulator Automation and Performance Evaluation,
pp.3428–3433
Cai, Jun
Li, Pingkang
Wang, Peng
Beijing Jiao Tong Univ.
Beijing Jiaotong Univ.
Beijing jiaotong Univ.
A computer-PLC (Programmable Logic Controller) control solution was
proposed for the artificial trough rainfall simulator. The rainfall process
with continuous changing intensities was simulated automatically with
the control strategy. Frequency-tunable pulse signal of specified duty
ratio was generated precisely using pulse module of PLC to drive nozzles
oscillating at required frequency. Thus, an arbitrary rainfall intensity
within the output range of the simulator was achieved. Control configuration
for trough rainfall simulator was built using Forcecontrol manmachine
software. Parameters settings and rainfall intensities tracking
during the rainfall simulation were realized. Simultaneously, a rainfall
simulator performance evaluation procedure was performed based on
a single nozzle rainfall test with six selected working states. A criterion
of dynamic rainfall uniformity was proposed to estimate the performance
of a rainfall simulator during the entire rainfall simulation. A
Locally weighted scatterplot smoothing (LOESS) and weighted averaging
approach was adopted in the evaluation procedure.
◮ SaB04-6 17:30–17:50
A Vison-based Grasping Strategy for the Mineral Sorting, pp.3454–
3459
Zhang, Yuren
Qiao, Hong
Su, Jianhua
Huang, Kaiqi
Fukuda, Toshio
Inst. of automation, Chinese Acad. of Sci.
Inst. of Automation, Chinese Acad. of Sci., China
Chinese Acad. of Sci.
Jiangxi Univ. of Sci. & Tech.
Nagoya Univ.
In industry application, e.g, mineral sorting, various mineral should be
picked from the conveyer. The problem can be regarded as grasping
prior unknown objects. In this paper, we aim to present a method to
grasp the objects with a three-finger gripper guided by vision. Based
on our previous works on attractive region, the way to locate a stable
grasp is illustrated in the rotation space of the object. More specifically,
the down-hill direction of the attractive region is used to guide the
motion of the camera. And then, a grasp planar is proposed to generate
hypothetic grasps from the contour of object. The vision and the
grasping detection are coupled to reconstruct only few points for contacting,
such that, the method can be conducted effectively. At last, the
efficiency of the method is illustrated by a simulation.
SaB05 15:50–17:50 Room 203E
Control Engineering (II)
Chair: Xiao, MingQing
Co-Chair: Zhang, Weidong
Southern Illinois Univ.
Shanghai Jiao Tong Univ.
◮ SaB05-1 15:50–16:10
Energy-Balancing-Based Control Design for Power Systems, pp.2364–
2369
Sun, Yajie
Ding, Zhengtao
Wang, Hong
The Univ. of Manchester
Univ. of Manchester
Manchester M60 1QD,U.K
This paper focused on the development of the Hamiltonian theory and
building Hamiltonian model, especially power system. To obtain better
control result of Hamiltonian system, adaptive control and energybalancing-based
control are considered. Combined those two methods
with Hamiltonian control system, by using simulation, the performing
result can be achieved.
◮ SaB05-2 16:10–16:30
Local Observer for Axial Flow Aeroengine Compressors, pp.2233–2238
Gao, Xuejun
Huang, Tingwen
Liu, Jun
Xiao, MingQing
Guangdong Univ. of Tech.
Texas A& M Univ.
Southern Illinois Univ.
Southern Illinois Univ.
Instability phenomena occurred in aeroengines are certainly very undesirable.
The unstable flow not only causes a drastic reduction in the
performance of the compressor but also can damage to engine’s components
during operations. Thus it is necessary and critical to employ
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