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With the economic development and social progress , the demand for energy is increasing . Use of renewable energy has become the best choice for people . Solar energy for its clean , efficient , and occupy the primacy of the broad prospects in the research and development of new energy . Trough solar thermal power generation technology is the most mature and achieve commercial operation in the developed countries , China has also done a lot of localization work . Electro-hydraulic control system for fast response , high output power , high precision control , and thus has been widely used in many fields . Thesis, electro-hydraulic control technology trough solar thermal power , and poly thermal solar tracking device improved . In this paper, based on the analysis of trough solar power plant poly thermal device movement characteristics , design the electro-hydraulic control system for poly - thermal devices . First , this paper analyzes the structure of poly - thermal device , the design of the hydraulic system for poly thermal device , and the analysis of the system in the AMEsim . Comparison, the sun tracking mode and proposes an improved solar tracking method . Then , according to the planning of the functions of the control system of the controller hardware modular design, and design a solar tracking sensor with active search function of the position of the sun . Sensor movement relative separation movement of the heat accumulating means , the first sensor for real-time tracking of the sun , the heat accumulating device according to the deviation of the relative position of the sensor returns a position adjustment , to avoid the heat accumulating device as a whole is kept to track the position of the sun , easy to improve system control accuracy. Software programming , signal processing function of the control system , hydraulic servo drive , solar tracking strategy module programming in MPLAB IDE . Finally, through the programming and debugging , software simulation and test verification to verify the performance of the electro-hydraulic control system and photoelectric sensor .
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