电气工程及其自动化优秀毕业论文英文(编辑修改稿)

电气工程及其自动化优秀毕业论文英文(编辑修改稿)内容摘要：

time constant Figure 17 PIplusfeed forward closeloop control system Figure 18 Cascade and feedback control system Figure 19 The block of whole system Figure 20 Cascade system Figure 21 The block diagram of Couple water tank water level PIplusfeedforward Control system Figure 22The block diagram of Proportional controller Figure 23 The block diagram of Proportional integral controller Figure 24 The block diagram of Proportional controller Figure 25 The block diagram of couple water tank PI controller Figure 26 The system amplitude oscillation curve 10 / 97 Figure27 couple water tank PI controller simulation results Figure 28 Digitaltoanalog and analogtodigital converter Figure 29 NetCon set Figure 30 NetCon set Figure 31 NetCon set Figure 32 NetCon set Figure 33 NetConTop set Figure 34 NetConTop set Figure 35 Calibration model Figure 36Calibration circuit board Figure 37 Saturation block Figure 38 Saturation set Figure 39 Proportional control system block diagram Figure 40 Pplusfeedforward controller experiment result 1 Figure 41 Pplusfeedforward controller experiment result 2 Figure 42 PIplusfeedforward control system block diagram Figure 43 PIplusfeedforward controller experiment result 1 Figure 44 PIplusfeedforward controller experiment result 2 Figure 45 PIplusfeedforward controller experiment result 3 Figure 46 Cascade and feedback control system block diagram Figure 47 Cascade and feedback controller experiment result 1 Figure 48 Cascade and feedback controller experiment result 2 Figure 49 Cascade and feedback controller experiment result 3 Figure 50 Couple water tank PIplusfeedforward control system block diagram. Figure 51 Couple water tank PIplusfeedforward controller experiment result 1 Figure 52 Couple water tank PIplusfeedforward controller experiment result 2 Figure 53 Couple water tank PIplusfeedforward controller experiment result 3 Figure 54 Couple water tank PIplusfeedforward controller experiment result 4 11 / 97 Chapter1. Project Overview Aim and Objectives: The aim of the project: The key aim of the project is to apply various control strategies to realtime level control of a water tank using puters. The objectives of the project include: a) Understand the level control problem of a water tank。 b) Study class and advance control methods, ., PID control, optimal control, adaptive control, fuzzy control, etc. c) Be familiar with the following software: Matlab, Simulink, RealTime Workship, NetCon System。 d) Simulate various control strategies (., PI, PID control, optimal control, adaptive control, fuzzy control) in Simulink for closedloop level control based on the model of a water tank。 e) Simulate various control strategies (., PI, PID control, optimal control, adaptive control, fuzzy control) on the NetCon System for realtime closeloop level control, based on the model of a water tank。 f) Apply the simulated control strategies to a practical level control test rig. General Background: Single watertank system Now day in Inhabitant domestic water supply, beverages, food processing and other industries the production process, we usually need to use the water tank, it need to 12 / 97 maintain the appropriate level, neither too overflow cause waste, also cannot too little and can39。 t meet the demand. A model of single watertank is show as the figure one below. V1 is water drain valve. V2 is the inlet valve. The liquid level of the control requirement is h0. The water flow, which drain into the tank is controlled by V2 valve, water flow, which drains out of the tank, is controlled by V1 valve. The V1 open library is change with the needs of users. As a consequence to control the variable value of the water level h0 it is transfer to control the Water inflow. In is experiment to achieve control the inlet flow by using change the voltage which is driven the pump. Figure1. Illustrating the Analogy Couple watertank system Couple tank water is a typical model of nonlinear delay objects, much of the controlled object in industrial whole or partial can be abstracted as mathematics model of double water tank. It has strong representation and strong industrial background. In industrial production the mathematical modeling and control strategy of couple water tank has the guiding significance in research of liquid level control system. Such as industrial boilers, mold level control. As is showed below the figure 2 is the couple water tank. The experiments require is control the bottom tank water level from the water flow ing out of the top tank. 13 / 97 Figure2. Schematic of the CoupledTank plant [1] To be more specific, the set above two experimental sequences are aimed at: 1. How to mathematically model the CoupledTank from first principles in order to obtain the two openloop transfer functions characterizing the system, in the Laplace domain. 2. How to linearize the obtained nonlinear equation of motion about the quiescent point of operation. 3. How to design, though pole placement, a proportionalplusintegralplusfeed forwardbased controller for the CoupledTank system in order for it to meet the required design specifications for each configuration. 4. How to implement each configuration controller in realtime and evaluate their actual performance. 14 / 97 Chapter2. Software Introduction MATLAB Introduction MATLAB is a programming environment for algorithm development, data analysis, visualization, and numerical putation. Using MATLAB, you can solve technical puting problems faster than with traditional programming languages, such as C, C++, and FORTRAN. You can use MATLAB in a wide range of applications, including signal and ima ge processing, munications,。