| ABSTRACT | 第2页 |
| CHAPTER1 INTRODUCTION | 第7-13页 |
| 1.1 Purpose and significance of the study | 第7-11页 |
| 1.1.1 Background and origin | 第7-9页 |
| 1.1.2 The significance of issues | 第9-11页 |
| 1.2 Domestic and foreign researching status | 第11-12页 |
| 1.3 Main research contents of the thesis | 第12-13页 |
| CHAPTER 2 THE STRUCTURE DESIGN OF THE SUN TRACKING DEVIC | 第13-37页 |
| 2.1 The determine of the sun’s locations and trajectory | 第13-17页 |
| 2.1.1 The concept of "celestialsphere" and the sun's position | 第13-14页 |
| 2.1.2 Determine the location of the sun | 第14-16页 |
| 2.1.3 The calculation of the angle of the sun | 第16-17页 |
| 2.1.4 Azimuth calculations of sunrise and sunset | 第17页 |
| 2.2 Overview of the sun tracking device | 第17-20页 |
| 2.2.1 The major technical specifications of the tracking device | 第17-18页 |
| 2.2.2 System Components of tracking devices | 第18页 |
| 2.2.3 The main functions of tracking devices | 第18页 |
| 2.2.4 Working principles of tracking devices | 第18-20页 |
| 2.3 Choosing driven approaches and driven components | 第20-23页 |
| 2.3.1 The principles of choosing driven systems | 第20-21页 |
| 2.3.2 Methods of choosing motors | 第21-23页 |
| 2.4 Design analysis of the structure forms of tracking device | 第23-27页 |
| 2.4.1 The whole design program of the tracking device | 第23-24页 |
| 2.4.2 The structure of track device | 第24页 |
| 2.4.3 The measures taken in design and technology | 第24-26页 |
| 2.4.4 Checking and calculation of the main parts of device | 第26-27页 |
| 2.5 Analyzing the main load of tracking device | 第27-31页 |
| 2.5.1 Inertia loads analysis | 第27-29页 |
| 2.5.2 Load of friction | 第29-31页 |
| 2.5.3 Integrated load | 第31页 |
| 2.6 Analysis of the precision of the erro | 第31-33页 |
| 2.6.1 Analysis of the error and conclusions | 第31-32页 |
| 2.6.2 Considerations of the design | 第32-33页 |
| 2.7 Summary of this chapter | 第33-37页 |
| CHAPTER 3 CONTROL SYSTEM OVERALL DESIGN | 第37-58页 |
| 3.1 Selection of control system | 第37-44页 |
| 3.1.1 Open-loop control system | 第38-39页 |
| 3.1.2 Closed-loop control system | 第39-41页 |
| 3.1.3 Control system principle of work | 第41-42页 |
| 3.1.4 Direct-current moment of electromotor’s PC104 control | 第42-44页 |
| 3.2 Control system hardware design | 第44-50页 |
| 3.2.1 Control electrical machinery's function | 第44页 |
| 3.2.2 The DC torque motor’s principle of work | 第44-46页 |
| 3.2.3 Direct-current moment electrical machinery's actuation | 第46-48页 |
| 3.2.4 Selection of angle measurement devices | 第48-49页 |
| 3.2.5 Photoelectricity encoder's application principle | 第49-50页 |
| 3.3 Control system software design | 第50-58页 |
| 3.3.1 PC104 synopses | 第50-52页 |
| 3.3.2 The mathematical model of the control system | 第52-54页 |
| 3.3.3 The overall design of the control system | 第54-58页 |
| CHAPTER 4 SIMULATION ANALYSIS OF THE CONTROL SYSTEM | 第58-68页 |
| 4.1 The simulation analysis | 第58-62页 |
| 4.1.1 The simulation analysis of the inner rim | 第58-61页 |
| 4.1.2 The simulation analysis of the outer rim | 第61-62页 |
| 4.2 Analysis of one day | 第62-63页 |
| 4.3 The overall analysis | 第63-66页 |
| 4.4 Discussion | 第66-68页 |
| CONCLUSIONS | 第68-70页 |
| REFERENCES | 第70-75页 |
| ACKNOWLEDGMENTS | 第75-76页 |
| APPENDICES | 第76-88页 |
