|
Title |
Author |
Abstract |
|
Computer
Simulation of Human Motion and Its Tendency
|
TANG
Yi,
GE Yun-jian, JANG Jian-ju, YUAN Hong-yi
|
Human
body simulation is a new field developing with interdisciplinary
study of Biomechanics, Computer Graphics, Robotics and so on. It
provides high value with theory and application. In this paper,
methods of human body model and simulation will be introduced
firstly, and then a method of human body modeling based on
biomechanical information transfers is proposed. Finally it’s
tendency in the future is discussed. |
|
Research
on Implementation of HLA Multi-Federations
|
HAO
Jian-guo, HUANG Jian, HAN Chao, HUANG Ke-di
|
With
the development of computer, network and simulation technology,
reuse of the legacy systems to implement large-scale distributed
simulation over Wide Area Network (WAN) is an important
requirement for military training. Currently, interconnecting
multi-federations is a focus of the High Level Architecture (HLA).
Bridge federate can be used to connect multiple developed
federations to construct a super-federation and to enlarge the
simulation scale quickly. This paper discusses the design and
implementation principles of bridge federate and
multi-federations, and presents the concept of Distributed
Bridge Federate (DBF). |
|
Integrated
Modeling and Simulation for Complex Multi-satellite Systems
|
HE
Yong-jun，DAI
Jin-hai，LI
Lian-jun
|
How
to evaluate and optimize the overall effectiveness of complex
multi-satellite systems is a crucial problem, and the effective
way to solve it is making use of integrated modeling and
simulation environment. Therefore, the characteristics of the
multi-satellite systems are analyzed, and the modeling and
simulation methodology for complex space systems is studied.
Emphasizing on earth observation satellite systems, aiming at
constructing flexible modeling and simulation platform, we
adopted the object-oriented methodology and component based
technology, designed and implemented the Modeling and Simulation
Software for Integrated Effectiveness of Multi-Satellite
Systems. The functions and implementing mechanics of the
software are introduced. |
|
A
Realistic Image Rendering Technology Based on Changing of
Illumination
|
ZHANG
Jian-ying, ZHANG Fang-qiang
|
Based
on analyzing the general illumination models and the features of
the realistic image rendering on fabric, it is built in this
paper the special illumination model with low complexity and
high realistic effect. Then it is stated the principles and
approaches on the realistic image rendering under changing of
illumination, and the results of weft knitted jacquard fabrics
are also presented. |
|
Threat
Estimation Research of Surface Warship Formation against
Anti-ship Missiles
|
WU
Jin-ping, LU Ming-hua, HUANG Wen-bin , SHI Yang
|
Anti-air
warfare (AAW) has become one of the primary tasks of surface
warship formation through the modern sea war. The basis has been
founded on the in-time and correct estimation during the
effective defense, and the threat estimation against air targets
has formed the bases of anti-air firepower effective
distribution and positive defense. In this paper, we distributed
the threat estimation areas (TEA) around the formation and
selected reasonable indices corresponding to different areas.
Considering that the air threat facing the surface warship
formation is primarily from anti-ship missiles, we finally
presented the threat estimation model of surface warship
formation against anti-ship missiles based on fuzzy set theory. |
|
Simulation
Research on the Metamorphic Algorithm of Modular
Self-reconfigurable Robots
|
XU
Wei,
WANG Gao-zhong, WANG Shi-gang
|
A
self-reconfigurable robot is usually a non-linear complex system
composed of a large number of modules. The computational
complexity caused by non-linearity makes it difficult to solve
the problems of module motion planning and shape-changing
control using a traditional algorithm. We proposed a
full-discrete metamorphic method. The module action rules are
set corresponding to the type of systems and tasks, and all
modules concurrently act by the local sensing information and
their action rules. As a result, a reasonable motion sequence
for modules and the global metamorphosis for robot can be
obtained. Therefore, the complexity of metamorphosis is reduced,
the metamorphic procedure is simplified, and the self-organizing
metamorphosis can be obtained. We developed a simulation program
to study and verify the metamorphic algorithms of several
typical 2-dimension systems. |
|
Research
on Pressure Transient of the Airplane Complex Refueling Pipeline
|
ZHOU
Rui-xiang,
WANG Jian-ping,
SHEN Yan-liang, CAO Ke-qiang
|
Aiming
at the large transient pressure of airplane refueling pipeline
system caused by the sudden closure of shut-off valve, both the
fluid equations and pipeline equations are presented in this
paper. Then the method of characteristics (MOC) and the finite
element method (FEM) are utilized to investigate the
fluid-structure interaction. At last the experiments are carried
out for the pipeline system connected with No 12 reservoir, and
the analytical results show that the energy in the water-hammer
wave is transformed into stress wave energy and vice versa in
the working conditions, which redistributes the waves shape and
changes the basic-water-hammer periods. The agreement of
transient pressure between the experiment and simulation shows
that the method mentioned above is valid and correct. |
|
Simulating
and Analyzing the Electromagnetism Noise Disturbing in the
System of Washing Machine
|
WANG
Hong-wei,
LI
Li,
MA
Guang-fu
|
In
washing machine system, the electromagnetism noise produced by
PWM amplifier signal from the inverter module in control system
of DC motor with non-brush effects the levels of
electromagnetism compatibility. Because of modulating frequency
of inverter washing machine being 7k~18kHz, the signal based on
these frequencies and energy can cause interfere signal with
high frequencies, and then can form electromagnetism
interference signal to electrical net. In addition, the
interference signal can effects the level of voltage conduction
and power radiation. It is essential that the electromagnetism
noise should be solved at the present time. The paper adopts
theoretical analyses and simulation experiments to find an
effective method of both restraining noise and improving
signal-to-noise. This method can solve EMS problems of
Electromagnetic Compatibility. |
|
Computational
Experiments for Behavior Analysis and Decision Evaluation of
Complex Systems
|
WANG
Fei-yue
|
This
paper presents the basic idea, concepts, and methods of
computational experiments, and discusses issues related to
computer simulation, observation and explanation based
emergence. Computational experiments are a natural extension and
further development of modeling and simulation, resulting from
recent and new advances of computing structure, algorithms, and
technology, and provide effective tools for experimenting with
complex systems, analyzing their behaviors and evaluating their
decision-making processes. |
|
Modeling
and Simulation of PMSM Vector Control System Based on PSIM
|
JI
Zhi-cheng , ZHOU Huan, LI San-dong
|
In
this paper, based on the mathematical model of the
permanent-magnet synchronous–motor (PMSM), a PMSM vector
control system model has been established in PSIM6.0.In PSIM/SIMCAD,
the isolated functional blocks, such as Vector controller block,
Phase
voltage block, Coordinate transform block, SPWM block, Speed
controller block, etc., have been modeled. By the organic
combination of these blocks, the control system model of PMSM
can be established easily. In the double loop of control system,
a PI controller is adopted in the speed loop and a vector
controller is adopted in the current loop.
The
validity has been testified by the simulation results and other
control strategies can be applied to the system to testify their
rationality.
This novel method offers a new thoughtway for designing and
debugging actual motors. |
|
Integrated
Design Method: Modeling Simulating and Verifying for FMS
|
XU
Gang,
WU
ZhiMing
|
A
modeling and verifying method using object-oriented modeling
language “Unified Modeling Language (UML)” and SPIN (PROMELA
model) is presented in this paper. Class diagram in UML is used
to represent the static relations among the objects in FMS, and
state diagram is used to describe the dynamic behaviour of the
system. Then the UML model is translated into PROMELA model
automatically, and property checking is followed with SPIN which
is a model checking tools. The method can describe and check the
properties of the system (from modeling, simulation, to model
checking), and can be used to design reliable FMS control
software naturally. |
|
ETL
Processes Modeling and Realization towards Data Quality
|
JIA
Zi-yan, HUANG You-ping, LUO ping, LI Jia-you, QIN Liang-xi, SHI
Zhong-zhi
|
To
help data warehouse getting high-quality data, data preprocess
is needed. Extraction-Transformation-Loading（ETL）tools
can finish this work. Complexity and usability are the primary
problems concerning the ETL tools. To deal with these problems
we provide a uniform architecture design for ETL processes which
covers the aspects of metadata pertinent to ETL modeling, ETL
transformation function design, modeling of ETL tasks, and the
description language of ETL task model (XTDL). According to this
idea of design, we developed an ETL tool named MSETL, aiming to
provide the high-quality data for our multi-strategy data mining
platform (MSMiner), which provides the friendly interface to
manage the metadata of ETL processes, including login and
deleting of ETL transformation functions, constructing and
deleting the tasks, and browsing the result of execution of
task. |
|
Approximate
and Parallel Calculation Method Design for Gray Function
|
WU
Jun-liang, LIU fei
|
By
means of the Neville interpolation principle, the
method of Approximate
and parallel calculation for gray function’s generating
function be researched. It come to a compromise for magnanimous
information and poor information problem
and it not only successful the procedure for deal the poor
information problem, but also provide a method for parallel
compute grey founction’s generating function. |
|
Design
of High-Speed Simulation Model for Land Mobile Satellite
Channels
|
GENG
Shu-min, LI Xing, ZHENG Lin-hua
|
This
paper describes a procedure for the design of fast simulation
models for LMS channels.The presented method is based on an
efficient implementation of Rice’s sum of sinusoids by using
qtr. trigonometric function table look-up techniques.During
system simulation,on the one hand,the time consuming operations
like multiplications and trigonometric operations are not
required,on the other hand,the system resource is saved greatly
compared with whole period table look-up method,which is
excellent during designing log-normal channel. |
|
The
Agent-oriented Time Management Algorithm
|
ZHAO
Huaici , HUANG Shaba
|
With
the development of the distributed interactive simulation
technology in extent and profundity, time management will remain
a core research area in the future.
This paper introduces the conception of Agent into the
distributed simulation, and uses it to analysis the time
management in simulation. This paper presents a method to
exploit the relationship among simulation Agents. A simulation
time management algorithm exploiting the causal constraint among
simulation Agents is developed. The time management algorithm
can improve the performance of the distributed simulation. |
|
Practical
Methods on Data Distribution Management of Large Complex System
|
CHEN
Li-feng, GU Hao, CAO Zhi-min, LI Hong-yi
|
In
the federation development based on HLA/RTI, it is an urgent job
to resolve the data distribution problem of large complex
system. The realization mechanism of data distribution
management (DDM) and the puzzledom of DDM based on large complex
system are analyzed in this paper, and some methods are
recommended to improve the efficiency of data distribution, such
as adding advance of entity’s model, optimizing matched
algorithm and reducing multicast. The result of simulative
validation is presented. |
Research
on Visual Simulation System for Autonomous Underwater Vehicle
|
WANG
Hong-jian, BIAN Xin-qian, SHI Xiao-cheng, LI Juan
|
Based
on software platform—MultiGen
CreatorPro and Vega, the distributed virtual simulation system
of autonomous underwater vehicle (in short, AUV) was developed.
The system architecture, information flow, mathematics models of
AUV and the method of space consistency were discussed. It is
also introduced in this paper some technologies, such as the
mode of data communication, simulation functions and the
technique of real-time visual simulate and display. At last,
some 3D frames were proposed, which simulated the process of AUV
steering at the results of path planning. The result shows that
the simulation system is reasonable and reliable, that the
mathematics model and simulation algorithm also completely
satisfy the real-time requirement, and that the simulation
system can realistically demonstrate the simulation process of
AUV. This simulation system has been successfully applied to
validate the correctness, validity and practicability for the
automation ability and dynamic control algorithm on the project
of a certain AUV, which is researched and developed by Harbin
Engineering University. |
|
Equation
of Motion and Prototype Machine of Container Crane Loading
Simulator System
|
LIN
jin-yao ,YIN yong, JIN yi-cheng, GUO guo-zhong
|
In
the first, the paper presents the practical importance and
technological background of container crane loading simulator
systems. Then, it analyses the method to build up Lagrange’s
equation of motion, and
uses fourth–order Runge-Kutta algorithm to solve the
differential equations numerically. At present, the equation has
been used successfully in the container crane system.
At last, many key technologies are put forward to develop
prototype machine using OpenGVS . |
|
Development
of Distributed INS/GPS Integrated Navigation Simulator
|
LI
Xin-gang,
YUAN
Jian-ping,
LUO
Jian- jun
|
Before
developing an INS/GPS integrated navigation system, it is an
efficient method to build an INS/GPS integrated navigation
simulator to reduce cost and shorten period of development.
Building a distributed simulator with multiple computers will be
more close to the actual system. The simulator consists of GPS
simulation subsystem, INS simulation subsystem and INS/GPS
simulation subsystem. Hardware interface design, algorithm and
software development of the simulator are discussed. Solving
method for the scabrous problem of system synchronization is
given as well. The final version of the designed scheme has been
applied successfully in certain airplane simulation system. |
|
The
Research and Application of dSPACE－based
Hardware-In-The-Loop Simulation Technique in Servo Control
|
PAN
Feng,
XUE
Ding-yu,
XU
Xin-he
|
Hardware-in-the-loop
simulation technique is a kind of real-time simulation technique
in real process, the actual plant can be placed inside the
simulation loop, and the control parameters can be tuned on line
so as to adjust the performance of real time system. A dSPACE
based hardware-in-the-loop simulation system is presented in
this paper to demonstrate the direct use of MATLAB/Simulink in
real time control. Through the combination of these tools, a
soccer robot servo system is investigated and a satisfactory
result is achieved. |
|
Virtual
Reality Based Interactive Simulation System for Ship Motion
Control
|
GUO
Chen,
YANG Guo-xun, SUN Jian-bo, SHEN Zhi-peng,
XU Li-li
|
An
interactive visual simulation system adopting virtual reality
for ship motion control is proposed and developed. It can make
better approach of ship motion control system such as autopilots
of heading/track-keeping and fin stabilizers in experiment
environment. Thus it is possible to directly obtain the
characteristics of both dynamic and steady-state of the system.
The real-time tracking and monitoring for visual simulation
process of ship motion control algorithms are realized. |
|
Research
on Augmented Reality Based Teleoperation System
|
ZHU
Guang-chao, WANG Tian-miao, CHOU Wu-sheng, MENG Cai, WU Jun, XUE
Xi-mei
|
In
teleoperation system with large time delay, modeling error and
accumulated motion error existing in predictive graphical
simulation can seriously degrade the security, fidelity and
efficiency of teleoperation. The problem can be overcome by
applying augmented reality in teleoperation system. By using
video overlay and object location technology, the operator can
easily compare the planning result of simulation with the actual
result of the robot, and the errors can be compensated by
modifying and updating the simulated model. Experimental results
demonstrate that the system can not only overcome the large time
delay effectively, but also improve the fidelity and efficiency
of teleoperation. |
|
Implementation
of Coordinated Control System in Compact Power Plant Simulator
|
LIANG
Yi-xiong,
PAN
Ying-jun,
HE
Zu-wei
|
As
a part of compact simulator for power plant based on Distributed
Control System
(DCS), the paper focuses on the design and implementation of the
model of Coordinated Control System (CCS) in the simulator. By
using modular modeling method, the model of real control
component is constructed. Then the simulate model of CCS is
configurated by the models through the advanced Direct Energy
Balance (DEB) control strategy. Experiment results show that the
simulate model of CCS can simulate different running patterns
such as turbine following boiler pattern, boiler following
turbine pattern, CCS pattern, etc. |
|
The
Design and Simulation of On-line Detector of Pulse Signal Based
on Wavelet Transform
|
LIU
Jinqi,
LI
Yuhua,
YI
Hebing
|
With
the advantage of wavelet transform theory in separating signals
from noises, we design a measuring machine that can examine
pulse signal at any time during the processing of observing the
irregular data in a limited time. At the same time, we make a
detailed analysis of the output in theory when the measuring
machine runs at different time period while wavelet formula can
be regarded as the Mexican cap wavelet. The imitation
examination shows that, checking result of this measuring
machine is correct not only for ideal pulse signal, but also the
identification for the noises with color and pulse signal with
low rate of signals and noises. This signal-measuring machine
has been successfully used in the data delivering circuit of
tension examining system of the steel wire rope. |
|
Simulation
and Test for Two-phase Flow in Oil Wells
|
WANG
Jin-qi,
QIANG
Xi-fu,
WANG
Feng-bo
|
In
oil wells, water-holdup measured by tool is higher than
water-cut due to the surge of oil and water. Considering that
only water-holdup can be directly measured by tool, it is
necessary to transform water-holdup into water-cut by model. In
this paper, the flowage model of oil and water is built up.
Several rules of oil and water surge are obtained by simulating
some wells based on the above model. From the test, it is shown
that effect of surge on water-holdup can be weakened by
increasing the flow velocity of oil and water, which assures the
accuracy of water-holdup measurement. |
|
Simulation
for the Handling and Stability of Four-wheel Steering Vehicle Based
on Matlab/Simulink
|
LV
hong-ming,
CHEN Nan
|
In
this paper, the dynamic characteristics of four-wheel steering
(4WS) vehicle are illustrated. With the software of Matlab/Simulink,
the handling
stability
of 4WS vehicle based on yaw-rate tracking control is studied,
and the simulation example and result are given also. Simulation
shows that the 4WS vehicle is agility to and consistent with
steering input and the transient handling stability is improved
distinctively without increasing driver’s handling difficulty. |
|
The
Simulation Method and Application of Sonar Noise Field Based on
Underwater Acoustic Field
|
YANG
Yun-chuan, CUI Huai-lin, LI Zhi-shun
|
This
paper introduces the models of self-noise and ambient-noise of
sonar. Using models, the project of self-noise filed and
ambient-noise filed simulation in hardware-in-the-loop
simulation are analyzed. The spatial correlations of isotropic
and non-isotropic noise fields are discussed, and their
simulation methods with circular array and spherical array are
presented. These methods have a significant worthiness in
evaluating the static and dynamic performance of sonar system. |
|
Dispersion
Simulation Technique of Multiple Tube Weapon
|
WANG
Guo-ping,
RUI
Xiao-ting, CHEN Wei-dong
|
It
is very important to simulate the precision of fire of Multiple
Launch Rocket System (MLRS) for improving the dispersion and for
reducing the number of rockets used in test. Launch dynamics of
MLRS is deeply studied both in theory and through test from the
view point of whole system including rockets, launcher,
propellant and envirment. The launch dynamic equations of
multibody coupling rigid bodies and elastic bodies of MLRS are
established. The dynamic response of MLRS is analysed by using
transfer matrix method of multibody system. The
dispersion simulation technique of multiple tube weapon is
established based on the launch and flight dynamic equations by
using Monte-Carlo method. The dispersion of a MLRS and the programming
test
scheme to reduce rocket consumption in the MLRS test are
simulated. The results of simulation are verified by test. |
|
Performance
Simulation of the Anti-jamming Communication Network Based on
Reliability
|
ZHANG
Yi, YAO Fu-qiang
|
A
new approach to evaluating the anti-jamming ability of
communication network was provided, which is based on the
particularity of the anti-jamming communication network. Above
all, a method to calculate the reliability parameters was
obtained after analyzing the reliability parameters and
simulation of this network, and then a reliability matrix as
decision threshold was constructed. Furthermore, the simulation
algorithm on the reliability of anti-jamming communication
network was also given integrally, and the anti-jamming and
cooperation abilities of this network were simulated. The
results show that the new method for analyzing anti-jamming
ability of the anti-jamming communication network is accurate
and valid, and the anti-jamming communication network can be
evaluated efficiently in this way. |
|
Simulation
of Dynamic Fault for Liquid Propellant Missile Whole Power
System
|
ZHANG
Wei,
XU Zhi-gao, HUANG Xian-xiang
|
On
the basis of the analysis for the transient characteristic,
failure characteristics, and the introducing method of fault
factor for whole power system, especially for the spontaneous
pressurization system, the non-linear dynamic fault model of a
liquid propellant missile power system is set up according to
its actual structure to simulate the dynamic fault.
This
model can be used to simulate transition process and to analyze
dynamic fault characteristics of the whole power system. |
|
Elementary
Research and Simulation of the TDRSS Constellation’s
Construction
|
WANG
Jun-hui，LI
Kun
|
This
paper summarized the definition and advantage of the Tracking
and Data Relay Satellite System-TDRSS. Then it analyzed the main
factors that influenced the construction of our TDRS
constellation. We
put forward the method and steps to realize simulation and
analysis of the construction of TDRS constellation by using the
Satellite Tool Kit (STK) software. Further more, we have also
designed a simulating experiment to analyze and compute the
accesses between the data relay satellites and the user
satellites which are at GEO, MEO and LEO respectively. In the
end, the data acquired from the simulating experiment are
primarily analyzed. And by the simulating result we bring
forward a primary vision for the construction of Chinese TDRSS
constellation. |
|
Simulation
Research of Anti-ship Missiles Application based on STAGE
|
XU
Jian-zhi, LIU Ding-chen
|
Anti-ship
missiles application research is the key for warships arms to
form battle effectiveness. A simulation platform of anti-ship
missiles application was built based on STAGE, the combat
simulation software of Canada ENGENUITY Technologies Inc. The
platform’s model framework, simulating realization, and
simulating flowchart were introduced. A kind of anti-ship
missile was modeled and simulated on this platform. A technical
bug of the missile’s hunting scheme is found out. After
analyzing the missile’s optimizing scheme and updating scheme,
the simulation platform is proven to be useful. |
|
Research
on Spares Management System with Simulation
|
YANG
yu-hang,
ZHAO
jian-min,
LI
Zhi-zhong,
ZHENG
Li
|
The
authors of the paper studied systematically the status quo of
the management model of the spares both in China and abroad,
analyzed the structure and flow of the management system of the
spares, established a two-level optimized simulation model and
arithmetic and carried out simulation studies in the visualized
ARENA simulation situation. The optimized model and arithmetic
for spares raised in the paper can be used both in the
management of the maintenance equipment for weapons, and in the
management of spare parts of civil products. It has far-reaching
practical value and meaning. |
|
Modeling
and Control Based on Adaptive Fuzzy Neural Network Technique of
PEMFC
|
WEI
Dong, CAO Guang-yi, ZHU Xin-jian
|
In
this paper, an adaptive fuzzy identification and control models
of PEMFC are developed based on input-output sampled data and
experts' experience. The parameters of identifier and controller
are regulated by adaptive learning algorithm, and the networks
structure and the rule database are modified by adjusting the
parameters. In the end, the simulation results of on-line
control model are presented, which show the effectiveness of the
proposed control model. |
|
NS-based
Determination of Best parameters in Bandwidth Allocation
Algorithm of RPR
|
RAO
Ning, XIE Gaogang, LI June, LI Zhongcheng
|
IEEE
is currently standardizing a spatial reuse ring topology network
called the RPR (Resilient Packet Ring), which works in MAC
layer, with peculiarities of duplex, spatial reuse, and
self-protection. Bandwidth allocation algorithm is one of the
key algorithms in protocol (RPR
Draft1.0).
After analyzing the influence of the key parameters of bandwidth
allocation algorithm on the algorithm efficiency in RPR draft
1.0 by using 25 pairs of key parameters to configure NS2 RPR
simulator, two classical back-pressure scenarios are simulated,
and convergence time and oscillations in each case are
comprehensively considered. The results of experiment indicate
that when Lpcoef equals 32
and Rampcoef equals 64 it
is
better than that in the case when Lpcoef equals 64 and Rampcoef
equals 64 advised
in the draft. |
|
Research
on the Performance of the Triple-Evaporator VRV Air Conditioner
|
WU
Yong-qiang，ZHOU
Xing-xi，XIA
Jing，CHEN
Wu
|
The
performance of triple-evaporator VRV air conditioner is very
complex because of the interaction of respective evaporators. A
distributed-parameter model based on two-phase flow theory in
triple-evaporator VRV air conditioner is established in this
paper. The simulations using this model have been conducted and
the performance of system has been analyzed. According to the
analysis the necessity and advantage of the control of suction
pressure is presented here. The result of this paper should help
the establishment of control strategies of such an air
conditioning system. |
|
The
Research of Fault Diagnosis System Based-on Fuzzy Neural Network
for Vehicle Alternator
|
XIAO
Ben-xian , LOU Tian-ling , GUO Fu-quan, WANG Qun-jing
|
The
fault phenomena and fault symptom list are established in
allusion to the characteristics of vehicle alternator, and a
fault diagnosis approach based on a fuzzy neural network is also
applied for this alternator fault diagnosis. In this paper, the
structure of the fuzzy neural network and corresponding learning
method are introduced, and the structure of this real-time
vehicle alternator’s fault diagnosis system is introduced
based on CAN bus and computer platform. At last, this fuzzy
neural networks fault diagnosis is simulated with Matlab’s
Neural Networks Toolbox. The simulation results show the
validity and practicability of this fault diagnosis system. |
|
IREA-based
|
