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首页电气工程及其自动化优秀毕业论文:实时计算机水箱水位控制
电气工程及其自动化优秀毕业论文:实时计算机水箱水位控制
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更新于2023-11-23
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研究生Sijun Wu于2013年4月提交了题为“水箱的实时计算机水位控制”的电气与电子工程专业毕业论文。论文指导老师为Guoping Liu和Dr. Mike Price。在这篇论文中,Sijun Wu探讨了水箱的实时计算机水位控制系统。论文包括对水箱控制系统的设计和实施过程的详细描述,以及对系统性能和稳定性的分析。在论文中,Sijun Wu展示了自己对电气与电子工程领域的深入理解和研究能力。这篇论文对实时计算机水位控制技术和电气工程自动化领域的研究都具有一定的参考价值。
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2.2 Simulink introduction
SIMULINK is an environment for multi domain simulation and Model-Based
Design for dynamic and embedded systems. It provides an interactive graphical
environment and a customizable set of block libraries that let you design, simulate,
implement, and test a variety of time-varying systems, including communications,
controls, signal processing, video processing, and image processing.
Add-on products extend SIMULINK software to multiple modeling domains, as
well as provide tools for design, implementation, and verification and validation tasks.
SIMULINK is integrated with MATLAB, providing immediate access to an extensive
range of tools that let you develop algorithms, analyze and visualize simulations,
create batch processing scripts, customize the modeling environment, and define
signal, parameter, and test data [3].
Key Features
➢ Extensive and expandable libraries of predefined blocks
➢ Interactive graphical editor for assembling and managing intuitive block diagrams
➢ Ability to manage complex designs by segmenting models into hierarchies of
design components
➢ Model Explorer to navigate, create, configure, and search all signals, parameters,
properties, and generated code associated with your model
➢ Application programming interfaces (APIs) that let you connect with other
simulation programs and incorporate hand-written code
➢ MATLAB Function blocks for bringing MATLAB algorithms into SIMULINK
and embedded system implementations
➢ Simulation modes (Normal, Accelerator, and Rapid Accelerator) for running
simulations interpretively or at compiled C-code speeds using fixed- or
variable-step solvers
➢ Graphical debugger and profiler to examine simulation results and then diagnose
performance and unexpected behavior in your design
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➢ Full access to MATLAB for analyzing and visualizing results, customizing the
modeling environment, and defining signal, parameter, and test data
➢ Model analysis and diagnostics tools to ensure model consistency and identify
modeling errors
2.3 NetCon System
The NetCon (Networked Control) system is a platform for teaching and research of
real-time control systems through Intranet/Internet. It consists of three hardware and
software parts: NetController, NetConLink and NetConTop. Classic, modern and
advanced control methods can easily be implemented for real-time control using the
NetCon system, which is based on the visual configuration technology.[4]
Figure3. The overall NetCon system [4]
2.3.1NetController
NetController is the front-end execution units of NetCon system, running specific
control algorithms. NetController through the network interface receives the
monitoring and control parameters and control command from configuration platform,
and control the real-time running state and uploaded to the monitoring object
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configuration platform. It is based on 32-bit ARM microprocessor, which is high
performance, low power consumption. It running embedded real-time operating
system and use industry-specific modular design, provide more road input/output
interface standards, such as A/D and D/A, PWM, digital I/O, etc, and also provides
LCD display output. Compared with the traditional front-end controller, network
controller has higher speed and larger addressing capability, coupled with
multi-tasking and real-time embedded operating system it can completely guarantee
the smooth running of complex control algorithms.
Figure4. NetController [4]
2.3.2NetConLink
Network visual control configuration software (NetConLink) is based on
Matlab/Simulink and it can achieve seamless and SIMULINK combined. Firstly Users
can use various modules and customization of the S - function system function, which
is providing by Simulink. Secondly using graphical way to create model of controller
and controlled object. Then control strategy is tested many times for the whole control
system of the offline and online in order to verify the feasibility. After that code is
generated and automatically can be downloaded into NetController by NetConLink in
a few seconds. NetConLink provides hardware driver module and network control
toolbox, and provide the interface for NetConTop.
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Figure5. Interface of NetConLink [4]
2.3.3 NetConTop
Network visual monitoring configuration software (NetConTop) is based on
Windows operating system and it is used to generate computing graphical monitoring
program configuration software development platform. It provides a complete program
of solving engineering monitoring problems. Users can easily design visual monitor
interface. It offers a variety of standard configuration control, such as the graph,
instrument, the input box, and support the client/server architecture. Its main functions
include: NetCon controller real-time data acquisition and management, real-time
monitoring, commissioning and management.
Figure6. User Interface of NetConTop software [4]
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Chapter3. Hardware Introduction
3.1 Coupled-tank system description
The Coupled-tank plant module is
consisting by a pump with a water basin and
two tanks. As shown in Figure 7. The two
tanks are fixed on the panel. A gear pump is
installed at the bottom of the panel. The
pump can thrusts the water from the water
reservoir, which is under the Couple-tanks,
through the hose afflux into the upper tank,
such that flow from the upper tank can drain
through an outlet orifice, which is located at
the bottom of the upper tank, into the lower
tank. Flow from the lower tank flows into the
main water reservoir. In each one of the two
tanks, liquid is withdrawn from the bottom
through an outflow orifice. The out let
pressure is atmospheric. In order to introduce
a disturbance flow the upper tank is also
equipped with a drain tap so that when
open, flow can be drain directly into the
water reservoir. For each waters tank we can see a staff gauge attach beside the tank to
display the real time water level. Two pressure sensors are installed on the bottom of
each water tanks in order to monitor Real-time water level and give feedback signal.
Figure7. Coupled-tank Model [1]
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