定日鏡光斑偏差處理系統(tǒng)設(shè)計(jì)
[Abstract]:Tower solar thermal power generation system has become an important development direction in the field of solar energy utilization because of its advantages of cleanliness and stable quality of power generation. As the main component of tower power generation system, the solar thermal power generation system accomplishes the gathering of solar light energy. The accuracy and stability of the process of concentrating light is of great significance to the power generation of power station and the safety of power station equipment. It is an important research direction in tower system. In this paper, the open-loop control system of the sun-fixing mirror is taken as the research object. It is designed from the aspects of the focusing process of the sunspot, the measurement of the deviation between the spot center and the focus point, the data processing of the spot center deviation, etc. The processing process of spot deviation under correction of sunspot mirror is realized. The key points and innovative achievements of this paper are as follows: (1) the focusing process in the open loop control system of the helioscope is studied, and the control strategy for the separation of the solar position calculation from the real-time focusing process of the sunspot mirror is analyzed. (2) the camera is used. The measurement system of spot deviation, which is composed of whiteboard and image processing algorithm, can calculate the deviation value of spot deviation from the center point of whiteboard reflected by the sun-fixing mirror, and combine with the camera jitter problem in the actual situation. A set of practical automatic calculation system for spot deviation of sunspot mirror is designed. (3) aiming at the problem of sparsity and noise of spot deviation data obtained from sunspot mirror in correction state one day, The improved extreme learning machine (ELM),) algorithm is designed to effectively fit the spot deviation data of the helioscope, and a reliable curve of spot deviation is obtained. (4) based on the above research, a set of automatic processing system for spot deviation of sunspot mirror is designed. The transformation from spot image to spot deviation curve is realized in the state of sunspot correction. Finally, the system is simulated and verified. In this paper, the design of the spot deviation processing system for sun-fixing mirror is realized. It is proved that the variation law of spot deviation of sunspot mirror can be well obtained, which is of great significance to the calculation of angle deviation of the turning axis of sun-fixing mirror in the process of concentrating light.
【學(xué)位授予單位】:浙江大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:TM615
【參考文獻(xiàn)】
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