| Title |
Author |
Abstract |
| The
Simulation System of South-to-North Water Transfer Project |
YANG
Fang-ting, LAI Chun-jie |
The Simulation System of South-to-North Water Transfer Project
is a larger-scale simulation system, and the paper systemically
explains and analyses the simulation system. At the same time,
the design idea, theory and method are also introduced in the
paper. The simulation system supports the analysis for important
questions in South-to-North Water Transfer Project that the
management department of the project is considering, and acts
as a scientific tool as
well as a simulation platform. |
| Research
on Water Price System Simulation about the East-Route of South-
to-North WaterTransfer Project |
LIU
Wen-fang, BAI Dan |
The reasonable water price is the precondition of the successful
implementation of South-to-North Water Transfer Project. This
paper, from the system simulation point of view, at the
condition of considering both the payment and the supportability
of inhabitant and industry, using the computer simulation
technology, goes on the simulated calculation through designing
different economic conditions and parameters, and then seeks for
the best water price series. |
| Simulation
Research on Water Price in the Middle-Route of South-to-North
Water Transfer Project |
GU
Yong-gang,
LI
Huai-en,
YANG Fang-ting |
The water transfer project from south to north in China is an
important strategic project, and modern simulation technology
application in the analysis and research has become one of the
most efficient tools for the complex system. This paper presents
computer simulation technology application in the research of
water price in the middle-route of the water transfer project
from south to north, brings forward the simulation modeling
system for middle-route project supplying area water price,
constructs the object function, water price model, paying
function model and restriction model, and obtains the main
simulation parameter. By simulation analysis, we calculate the
changes in middle-route project area supplying price on
different condition and analyze the influence to the industry
and life after price improving. The results express: compared
with present water price, the paying period water price will
obviously improve; by water price increasing, the influence to
the interrelated industry is relatively small; and paying period
water price generally in the middle-route supplying area
residents acceptable range. |
|
The
Water Quality Simulation Research of Mid-lower Reaches of
Hanjiang River in Middle-Route of South-to-North Water
Transfer
Project |
YAO
Gui-long,
ZHOU Xiao-de |
Using oriented object modeling methods and simulation technology
to establish system simulation model of the water quality of
mid-lower reaches of Hanjiang river and to develop system
platform of simulation test. This platform is provided for
simulating the influence of transferring water on water quality
of mid-lower reaches of Hanjiang river and the water quality
station of mid-lower reaches of Hanjiang river in different
conditions. It is found that the calculating results based on
this simulation platform are dependable and stable by doing some
simulation tests, and this simulation platform can be supplied
to decision-department to draw up scheme as an efficient
dependable reference tool. |
| R&D
of the Water Quality Simulation System of East Route of
South-to-North Water Transfer Project |
HAN
Jun, SHI Yu, TAN Bing-qing, YANG Fang-ting |
The water quality simulation system of east route of
South-to-North Water Transfer Project, the platform of water
quality simulation for the project, is constructed for the first
time. The system is mainly used to verify the water quality in
the water transfer period after the pollution control plan is
executed. A series of simulation experiments are conducted with
the system, and relative results are obtained, and some
proposals are also presented. |
| System
Simulation for Water Operation in the Middle Route of
South-to-North Water
Transfer Project |
MENG
Wen-jie,
MA Bin |
Using object oriented modeling and simulation technology to
establish system simulation model of the water transfer project
from south to north (middle route) and to develop system
platform of simulation test. With this platform, we can simulate
procedure of water operation, which is helpful to utilize water
resource reasonably, realize optimal distribution of water
resource and supply efficient dependable referenced plan to
decision-department. By system simulation test, the short term
plan is proved to be able to solve the shortage of water in
North China. |
| Simulation
for Transportation Channel in China’s Middle Route
South-to-North Water Transfer Project |
ZHANG
Jin-xiong,
NIU Zheng-ming |
China’s Middle Route South-to-North Water Transfer Project is
a great transportation project across drainage area with long
route, large discharge and number of divide and control gates.
Its character of hydraulics is very complicated. In this
simulation system, based on the establishment of unsteady flow
model of the channel, the research and simulation
experimentation is done for the transportation channel system.
The results could supply reference to the design, the management
and the security of the channel. |
| Design
and Implementation of GIS of Simulation System of the
South-to-North Water Transfer Project |
WANG
Xiao-hui,
WEI Ming, XIE Jian-cang |
In this paper, the author introduces the South-to-North Water
Transfer Project. GIS is a subsystem of simulation system of the
South-to-North Water Transfer Project, and its functions are
described. In particular, the author gives methods and process
of modeling for the functions of GIS. At last, some simulation
results are provided. |
| The
Realization of 3D Scene Subsystem in the Simulation of
South-to-North Water Transfer Project |
JI
Liang-xiong,
WANG Wei, YANG Fang-ting, ZHAN Shou-yi |
This paper puts forward that a vivid 3D model based on the
geographical data (DEM data and vector data) can be generated
through the analysis of the task of scene subsystem in the
simulation of South-to-North Water Transfer Project by using
OpenGVS to accomplish scene drive and TCP/IP protocol to
inter-connect with other subsystem nets. In order to achieve a
very good scene demonstration effect, in this paper the data of
the scene are reduced by condensing the DEM data and by using micromodel. |
| The
Study and Development of the Sand Table System |
YAO
Hong-wei, TU Ying |
The Electronic Sand Table Subsystem is constructed in this paper
for the South-to-North Water Transfer Project Simulation System.
It is a key part of the system. The panorama and some important
areas of the middle-route and east-route of the project is
embodied by means of real data, and some practical functions are
also developed. It can give the observers a thorough
understanding of the South-to-North Water Transfer Project and
provide some references for the decision-maker. |
| Database
and Network Construction in the Simulation System of
South-to-North Water Transfer Project |
TU
Ying, JI Liang-xiong, YAO Hong-wei |
The simulation system of the South-to-North Water Transfer
Project is known as a great simulation system in China, which is
composed of many individual function modules. Database
management and network configuration system is one of the
important subsystems, which creates the bases for the whole
control system. This paper puts its emphasis on how to create a
suitable DB structure and compatible network in order to support
the running of the whole system. As an example, a designing
method is given for the water price determination. |
| Blind
and Semi-Blind Identification and Equalization for Multipath FIR
Channels |
LEI
Xu, XU Chong-yang, LIU Yi |
In multipath FIR channel transformation, the intersymbol
interference caused by channel distortion is one of the main
interferences which influence the performance of band-limited
channels. In oder to enhance the performance of digital
communications, equalization techniques must be adopted at the
receiver. Blind equalization algorithm, which makes best use of
the statistics of the channel output signals, is a hot research
topic. Because the prior knowledge of the channel and pilot
symbols of burst date can be used, the semi-blind identification
and equalizationhave also excellent application prospect. This
paper introduces blind and semi-blind algorithm, and some
viewpoints for future research are described at the end of the
paper. |
| Mathematical
Model Research of Close-Loop Servo System |
SHU
Zhi-bing,
LIU Jun-quan, LIN Jin-guo, ZHAO ying-kai |
Servo system, which connects the numerically-controlled machine
tool and its numer center, is an important part in
numerically-controlled systems. It receives action pulses from
servo controller, which are amplified and converted to drive
servo actuator. In this paper, the principles and methods of
SERVO system model are presented and researched. Dynamic
mathematical model based on typically control theory is
proposed. The results are theory bases for transient and steady
performance analysis of servo system. |
| Simulation
Analysis of an Aircraft Arresting System to Rectify a Deviation |
WU
Juan,
HE
Chang-an |
An arresting simulation model of an aircraft arresting system
for a certain kind of aircraft which has a deflective engagement
of a net barrier is established in this paper (the model is also
suitable for normal case). It is based on SIMULINK software.
According to the model, arresting process is simulated.
Simulation results show that the arresting system is very
effective to rectify a deviation of an aircraft having a
deflective engagement of a net barrier. The simulation model is
not only suitable for the aircraft arresting system, but also
suitable for other kinds of aircraft arresting systems by
changing the subsystems of it. |
| A
Simulation Platform for WCDMA Digital Baseband Algorithm
Evaluation |
MA
Hui-ming, WANG De-miao, ZHANG Xian-min |
This paper describes a software platform which simulates a DS-CDMA
link for the 3rd generation mobile communication
system. We can choose wide array of advanced signal processing
algorithms and a variety of operating environments in WCDMA
system design. The goal of such simulator is to develop,
simulate and evaluate the baseband processing algorithms like
channel estimation, multiuser detection and space-time joint
processing, etc. This could be a guidance for system design. The
backbone of this platform is built using Matlab. Efficient
methods to optimize and accelerate the simulation are also
discussed. |
| A
Datawarehouse Model Supported Product Development |
LI
Qing-zhong, SUI Qi, ZHENG Yong-qing |
Today
most datawarehouse systems use the Snow-flake model as their
data model, but this model has some disadvantages including its
dissatisfied access efficiency. Our datawarehouse system is used
to support product development decision-making according to the
product’s sales in market, and the Snow-flake model can hardly
satisfy our demands. In this paper some ideas of object oriented
technic are combined in customary snow-flake model, and the
result of which is a new mixed datawarehouse model of both
object oriented technic and snow-flake model. The outstanding
access capability of the new model is also validated with
experimental data. |
| Research
on the Data Integration of Archaeological
Digital Museum with XML |
LIU
Shi-jun, MENG Xiang-xu, XIANG Hui |
Digital museum is an effective method of protecting and using
resources stored in museums. The data integrating of digital
museum relies on uniform data format and powerful expressing
means. This paper proposes a metadata model of cultural relics
for archaeological digital museum, after a brief review of
current status of research on metadata models. A
two parts metadata model, including a simple model and an
extended model, is
presented and discussed. The XML expression of the metadata is
also given. How to integrating cultural relic data and the
problem of data mapping between XML document and database are
discussed too. |
| IC
Card’s Making, Issuance and Transaction Simulating System |
ZHANG
Yi |
The problems, such as IC test card and PSAM card’s making,
issue, loading, transaction simulating, and so on, are usually
faced during developing and testing the application products of
SINOPEC Golden Card Engineering. This paper describes the
function, composing and programming method of an applied
software developed by author to resolve the problems. |
| The
Design of Multi-Mode Simulators for Ship Engine and Its Control
System |
WANG
Xi-huai,
XIAO Jian-mei, BAO
Min-zhong |
The Simulators for Ship Engine and its Control System, developed
by Shanghai Maritime University (SMU), have three operation
modes. The first mode is a single-computer system, in which both
engine model and control system are simulated on one computer.
The second mode is a distributed control system, in which the
upper computer is a PC with human-machine interface, and the
lower computer is a micro-controller to control the engine model
through simulation console. The third mode is worked as a key
part of the large marine engine room simulator developed by SMU.
A dynamic optimal BP neural network is used as the engine model,
and the software of control system is designed based on
real-time multi-task operating system. The simulators have been
used for training of students and seamen at several maritime
colleges in China since 2000. |
| The
Research on the Naval Weapon and Equipment
System-of-systems Operational Simulation System |
JING
Tao,
DING
Xiao-ming |
The Naval Weapon and Equipment System-of-systems (SoS)
Operational Simulation System primarily focuses on the structure
optimization and the effectiveness evaluation of naval weapon
and equipment SoS, for the purpose of improving the quality and
the efficiency of naval weapon and equipment integrated
demonstration. The system consists of the model-management
subsystem, the tactical exercise subsystem, the
campaign-simulation subsystem, the integrated evaluation
subsystem, the demonstration subsystem, and the data--management
subsystem. This paper puts forward the conceptual design and the
simulation architecture of the system, discusses the main
functions and characteristics of each subsystem, and analyses
the corresponding relation between the system and the integrated
demonstration. |
| Fighting
Efficiency Evaluation of Cruise Missile Based on DIS |
ZHOU
Zhen-hao, WANG Xing-ren |
Fighting efficiency evaluation system for cruise missile based
DIS can evaluate more scientifically the fighting efficiency of
weapon system. In this paper, the tactical feature of cruise
missile is analyzed, and the architecture, system components of
the efficiency evaluation system based DIS are presented，the
modeling of cruise missile is described in detail, and key
technique is put forward. Finally, the application vision of DIS
is prospected. |
| An
Improved Phong Model and It’s Algorithm of Ray-Tracing |
CHEN
Jia-xin, ZHOU Wei-jie |
This paper presents a kind of advanced lighting model based on
Phong lighting and radiosity model to improve the traditional
ray-tracing lighting model which lacks of the radiant-energy
interactions (diffuse inter-reflection) between all faces in a
scene. Based on this new advanced lighting model, more details
can be transferred, and a simplified algorithm for ray-tracing
based on the advanced model is presented and has been realized. |
| The
Implementation of Multi-user 3D-Scene Using EAI |
LI
Jun-er,
XU Yan-ning,
LI Zhen-bo,
MENG Xiang-xu |
EAI is the interface to communicate events between VRML and Java
Applet. By using EAI, we can implement the interactive user
interface in 3D space based on WEB. This Paper introduces how to
control VRML objects with Java, and presents a framework to
implement Multi-user 3D-Scene on the WEB in detail. Multiple
users are allowed to interact within this 3D-Space
simultaneously. |
| Virtual
Simulation System Study of Shipboard Electro-optical Tracking
System |
CHEN
Wei-yi,
WANG Shu-zong,
LI
Shu-shan |
In view of the practical problem of lacking targets tracking
environment in training of shipboard electro-optical tracking
system, first,
this paper introduces the application of virtual simulation
technology in weapon system training both at home and abroad.
Second, the functions of virtual simulation system of shipboard
electro-optical tracking system are introduced. Third, this
paper develops the overall design project of virtual simulation.
Finally, it is explained that virtual simulation technology can
be used as a new effective method in man-in-loop training system
development. |
| Review
of Digital Watermarking of Graphical Data |
XIANG
Hui |
Among the newly explored research areas of digital watermarking,
various types of data embedding technologies for graphical data
have drawn more and more attention. In this paper, the issues
about the digital watermarking of graphical data including
system models and feature sets selection of current algorithms
are discussed; the remaining open problems and future works are
recognized and presented. Specifically, we propose the study on
digital watermarking technologies of 2D graphical scenes. |
| Machine
Reading of Drawings and Digital Construction |
CAI
Shi-jie, XU Fu-pei, GAO Xiao |
There is a serious island problem in the information technology
of construction industry. The only way of transferring
information between design and checking as well as construction
is the paper-based or disk-based drawings. Human-reading has
became a bottleneck in construction industry. This paper
analyses the key problems for machine drawing reading and
proposes a way to solve the IT island problem by realizing
feature-based computer drawing reading and by establishing
digital construction. |
| A
New Method for Detecting and Locating Captions in Video Images
Based on Variant Color Histograms |
ZHANG
You-sheng,
PENG Qing-song, WANG Rong-gui |
The usual color histogram of a digital image can not describe
the local features and object attributes of the image. The paper
presents a kind of new color histogram, which has the ability of
describing local features. The definition of it is given, and
the mapping relation is analyzed between its trait areas and
image captions. Then, the application of the new color histogram
is discussed, and an algorithm is proposed for rapidly detecting
and locating captions in an image. In the end, computing
experimental results are given and the
validity of the algorithm is shown. |
| Web-based
Indoor Environment Virtual Walkthrough System |
YANG
Meng, WANG Guo-ping, DONG Shi-hai |
A new scheme based on Client/Server frame for indoor environment
virtual walkthrough is presented in this paper. The proposed
method first constructs a hierarchical q-j
polygon
patches linking map of all the patches by adaptively subdividing
patches into subpatches according to the patch’s attribute and
a user-supplied error bound. After that, the environment is
rendered using a light tracing algorithm and the result is saved
in a panoramic map. The panoramic map is used to synthesize the
view at novel viewpoint during walkthrough process. The size of
the data structures required by storing panoramic map is not
much large, and only a sparse set of patches is needed to be
transferred over network, so this method is well suitable for
web-based virtual walkthrough system. |
| NN
Inverse Control for Electro-hydraulic Servo Load System |
SHEN
Yi-li,
WANG Hong-gui,
LI Tian-shi |
A kind of inverse controller based on RBFN is adopted in this
paper to satisfy the special requests of the electro-hydraulic
servo load system and its object, then the existent conditions
of the NARMA model and its inverse model is proposed. The method
models the system by using RBFN, which only uses the input and
output signal, and then the NN inverse model, which is
also the controller, is trained by the system NN model offline
to ensure its astringency that may be destroyed by the system
noise. Practice control shows that the output can track the
desire trajectory exactly, and the robustness against some
uncertainty and noises is proved. |
| Research
on Command Automation Simulation Test Technology |
GU
Hao, ZHOU Yu-fang, YUE Gang, CHENG Jian-qing |
Command automation system is a regionally distributed
complicated big system integrating modern high technology, and
its sub systems are coupled closely. How to build simulation
environment to test the function and performance of the system,
and make analysis and evaluation of its comprehensive combat
effectiveness is a problem that must be studied and solved. The
paper describes architecture, main function and information
relationship of command automation simulation system, as well as
key technologies for building integrated simulation environment.
It further introduces effects of simulation system in research
of command automation system, and gives a prospect for its
application in the future. |
| Study
on the Virtual Simulation of FAST’s Feed Fine-Tuning System |
WU
Jian-xin,
ZHANG Hui, WANG Qi-ming, WANG Jin-song |
An idea that the simulation of FAST’s
feed fine-tuning system
can
be
achieved through network between two PCs is
presented. The structure and design concepts of virtual
simulation environment and some important issues like kinematics
modeling, dynamic modeling by OpenGL, data transfer and
simulation in
time domain are
discussed as well. |
| Polynomial
Structural Robust Adaptive Position/force Control System
Designed of Robot |
WEN
Shu-huan |
This paper proposes a novel position/force control strategy of
robot. The controller adopts polynomial structure in the force
control loop, and adopts calculating moment method in the
position control loop. The control structure is rather simple,
the speed is fast, and the control effect is good. The
simulation shows that the control strategy is practical. |
| Designing
for Debugger of Multi-processor System Based on C25 DSP |
WANG
Jie-fa,
LI Shi-jing, FENG Zu-ren, LI Ren-hou |
This paper focuses on the designing of debugger for
multi-processor system based on four TMS320C25 DSPs, presents
the soft-interface method (SIM) and the method of recording
breakpoints outside the processor’s memory (MRBOP). SIM is
realized by the protocol between the master PC and the C25s so
that it can similarly used to any processor based
multi-processor system whether or not the processor has step
register. MRBOP saves the breakpoints in an array in the master
PC other than in the C25’s stack.so that the debugger can hold
the least system resource of C25, and that the user can set
breakpoints arbitrarily. At the same time, some problems are
also discussed for parallel debugging in this paper. |
| Modeling,
Simulation and Application for Compensation of Movement Error in
NC Gear Hobbing |
DU
Jian-ming, WU Xu-tang, WU Hong, MAO Shi-min |
This paper discusses the source of movement error in gear
hobbing process, and it is established a mathematical model for
description of the error rule. The least square parameter
estimation is adopted, and the nonlinear problem of the
mathematical model is solved. Two methods of error sampling and
error compensation in the process of gear hobbing are given. The
simulation and practice application show that the compensation
method is efficient and practicable. |
| The
Simulation Implementation and Analysis of the Performance of
Channel Access Protocol FAMAC |
LI
Yan, ZHAO Zhi-feng, SHAO Shi-lei |
Ad hoc network is a special centerless wireless network and the
channel access protocol has crucial impact on the network
performance. At first, a multi-channel based channel access
protocol—FAMAC is introduced in this paper, then the way of
simulating FAMAC in the GloMoSim is proposed and the solution of
difficult problem is discussed in detail. In the end, we present
the simulation result of the protocol performance in two
different topologies. |
| The
Dynamic Measuring and Simulating of one Force |
XIE
Xiao-zhu,
HOU qin-Mei, FU Jun |
This paper presents a new developing step-spring force measuring
equipment and the new measuring method of the simulating force.
This system has two output .One output produces a non-mass
simulating force, the force value and wave is known .The other
output is put the non-mass simulating force to a measurement
system and output the dynamic force curve. According to the
system response, we can constitute the measuring system of
dynamic model, design the dynamic digital compensating units,
and implementing the compensating with computer software, The
test result show that the measuring error of dynamic force
system is less than 0.1% and this method can be spread to the
science experiment and the engineering application. |
| A
Design for LDI Low-Sensitivity Digital Filter and Simulation
Using Simulink Of Matlab |
ZHENG
Ya-min, JIANG Bao-chen |
It is possible to remain the expected low-sensitivity properties
of a LDI digital filter based on a two-port LC network analog
filter model by LDI transformation. This paper introduces the
theory of LDI transformation digital filter .We design a
low-sensitivity Chebyshev low-pass LDI digital filter and
simulate it by using software of Matlab / simulink. It
simplifies the designing process greatly .The simulation results
support our theoretical analysis. |
| Simulation
Study of DC Traction Power Supply System for Urban Rail
Transportation |
WANG
Xiao-dong,
ZANG Hong-bin |
This paper presents the simulation analysis method adaptive to
the traction power system based on the circuit theory and CAD.
The method can not only provide analytical data for the
demonstrability and design for the construction and
reconstruction of the urban rail transportation, but also
calculate and check the technical parameters of the power of
traction substations. The simulation analysis method presented
in this paper has been applied to the traction power supply
system of Shanghai Metro Line
I
,
II
and
the Oriental Pearl Line. The calculation and analysis results
accord with the conclusions from the foreign consultation and
design company. |
| Design
Verification via Simulation: Techniques and Their Application in
a General-purposed CPU Chip |
LV
Tao,
LI Hua-wei, YIN Zhi-gang, LIU Guo-hua,
LI Xiao-wei, FAN Jian-ping |
Design verification is critical during the process of chip
design, and simulation is still the primary workhorse for it.
According to different targets of application, techniques of
simulation-based verification can be divided into two groups:
one aims at stimulus pattern generation, and the other aims at
coverage evaluation. This article systematically discusses the
principles of many general verification techniques, and points
out advantages and disadvantages of each technique. It also
introduces the application of these techniques in a
general-purposed CPU chip design, including platforms, data and
analysis. |
| The
Research and Practice on Spatial
Attribute Data Mining Based on Rough Set |
LI
Long-shu, NI Zhi-wei, LING Cheng |
Recent studies have extended the scope of data mining from
relational databases to spatial databases along with the latest
developments in information technology. In this paper, we
introduce the concepts of geographic information system, and
study deeply spatial database and rough set theory. We analyse
connection between rough sets and spatial
data and
discuss concepts and algorithms
of discernibility matrix. A set of algorithms of data reduction
and data mining about attribute data in spatial database is
given using information entropy and fuzzy mathermatics. In the
last, an applying example is provided, and the feasibility of
the algorithms is verified. |
| Simulation
of Permanent Magnet Synchronous Motor Using Two Vector Control
Methods |
GU
Guang-xu,
DENG Zhi-quan |
There are two simulation models of Permanent Magnet Synchronous
Motor control systems using different control method in this
article. Running the models in the MATLAB, the results of vector
control method between feedforward and feedback got from the
simulation are compared and analyzed. |
