太陽能光伏板清灰機器設備的動力學研究
發(fā)布時間：2018-10-24 14:22
【摘要】：隨著全球的資源日益枯竭,新能源越來越受到人們的重視,太陽能光伏發(fā)電作為一種新型的發(fā)電方式受到全世界的熱捧,但是“積灰效應”嚴重地影響著發(fā)電效率。開發(fā)一種新型高效的太陽能光伏板清灰設備迫在眉睫。由于太陽能光伏板本身的尺寸很大,因此設計出的快速、高效、靈敏響應的清灰設備尺寸很大,它是一種類似于大型工程機械中的機械臂結構,要使得設備能夠正常運行,針對設備的主體部分的靜力和動力分析,以及進行相關的動力參數(shù)的研究是保證設備可靠性的重要前提。本文結合甘肅省蘭州市科技發(fā)展計劃項目“太陽能光伏板干式清理機器人研發(fā)及產業(yè)化”(編號2015-3-118),對太陽能清灰設備進行了靜力學分析,建立了設備的主體部分的各個組成機構的動力學模型,構建了整個設備的虛擬樣機,并且在已知的動力學參數(shù)下,研究了設備正常工作的可靠性。針對整套設備的懸臂外伸特征,對整套設備工作時出現(xiàn)的車體傾覆的情況進行分類,總結出三種最危險的狀態(tài),并建立相關的模型,最后推出在車體不傾覆的條件下設備本體所能吊起的最大刷體清灰機構的重量,驗證已開發(fā)的刷體清灰機構是否滿足條件。基于Workbench建立設備主體部分的有限元模型,分析在最惡劣的工況下,設備的應力與變形圖,驗證設備的各主要組成部分的結構的合理性。針對整套設備工作時的特點,把整套設備主體部分分為四個機構組成,其中利用作圖法建立了設備主體的核心機構—推拉機構的動力學模型,并且引入了海賽階躍函數(shù)更好地去模擬實際工況下,油缸的活塞桿的運動規(guī)律,運用MATLAB最終得到了總裝體(為了便于分析將刷體清灰機構與主梁機構看成一個整體)的角速度與角加速度的曲線圖,建立設備的推算系統(tǒng),并且基于推算系統(tǒng)建立了其余三個機構的動力學方程。基于ADAMS建立了整套設備的虛擬樣機,模擬設備的整個運行過程,分別分析了設備各個機構工作時,對應的總裝體的角速度和角加速度、速度和加速度的曲線圖,分析了設備中各主要的鉸接點處的受力情況,為后續(xù)的優(yōu)化工作提供理論支撐。
[Abstract]:With the depletion of global resources, people pay more and more attention to new energy sources. Solar photovoltaic power generation as a new type of power generation is popular all over the world, but "ash effect" seriously affects the efficiency of power generation. It is urgent to develop a new type of efficient solar photovoltaic cleaning equipment. Because the size of solar photovoltaic panels is very large, the design of a fast, efficient and sensitive ash cleaning equipment is very large. It is similar to the mechanical arm structure in large construction machinery, and it should make the equipment run normally. The static and dynamic analysis of the main part of the equipment and the study of the related dynamic parameters are the important prerequisites to ensure the reliability of the equipment. In this paper, the research and industrialization of dry cleaning robot for solar photovoltaic panels (No. 2015-3-118), a scientific and technological development project of Lanzhou City, Gansu Province, is studied in this paper. The dynamic model of each component mechanism of the main part of the equipment is established, and the virtual prototype of the whole equipment is constructed. The reliability of the equipment working normally is studied under the known dynamic parameters. According to the cantilever outstretched characteristics of the whole set of equipment, the overturning of the car body during the working of the whole set of equipment is classified, and the three most dangerous states are summed up, and the relevant models are established. Finally, the weight of the maximum brush cleaning mechanism which can be hoisted by the equipment body without overturning is put forward, and it is verified that the developed cleaning mechanism satisfies the conditions. The finite element model of the main part of the equipment is established based on Workbench, and the stress and deformation diagram of the equipment under the worst working conditions is analyzed to verify the rationality of the structure of the main components of the equipment. According to the characteristics of the whole equipment, the main part of the whole equipment is divided into four parts, and the dynamic model of the core mechanism of the equipment body, the push-pull mechanism, is established by using the drawing method. And the step function is introduced to simulate the motion of piston rod in actual working condition. By using MATLAB, the curves of angular velocity and angular acceleration of the final assembly (in order to facilitate the analysis of the brushing mechanism and the main beam mechanism as a whole) are obtained, and the calculation system of the equipment is established. The dynamic equations of the other three mechanisms are established based on the calculation system. The virtual prototype of the whole equipment is established based on ADAMS, the whole operation process of the equipment is simulated, and the curves of angular velocity and angular acceleration, velocity and acceleration of the assembly are analyzed respectively when each mechanism of the equipment is working. In order to provide theoretical support for the following optimization work, the stress of the main hinge points in the equipment is analyzed.
【學位授予單位】：蘭州理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM615
[Abstract]:With the depletion of global resources, people pay more and more attention to new energy sources. Solar photovoltaic power generation as a new type of power generation is popular all over the world, but "ash effect" seriously affects the efficiency of power generation. It is urgent to develop a new type of efficient solar photovoltaic cleaning equipment. Because the size of solar photovoltaic panels is very large, the design of a fast, efficient and sensitive ash cleaning equipment is very large. It is similar to the mechanical arm structure in large construction machinery, and it should make the equipment run normally. The static and dynamic analysis of the main part of the equipment and the study of the related dynamic parameters are the important prerequisites to ensure the reliability of the equipment. In this paper, the research and industrialization of dry cleaning robot for solar photovoltaic panels (No. 2015-3-118), a scientific and technological development project of Lanzhou City, Gansu Province, is studied in this paper. The dynamic model of each component mechanism of the main part of the equipment is established, and the virtual prototype of the whole equipment is constructed. The reliability of the equipment working normally is studied under the known dynamic parameters. According to the cantilever outstretched characteristics of the whole set of equipment, the overturning of the car body during the working of the whole set of equipment is classified, and the three most dangerous states are summed up, and the relevant models are established. Finally, the weight of the maximum brush cleaning mechanism which can be hoisted by the equipment body without overturning is put forward, and it is verified that the developed cleaning mechanism satisfies the conditions. The finite element model of the main part of the equipment is established based on Workbench, and the stress and deformation diagram of the equipment under the worst working conditions is analyzed to verify the rationality of the structure of the main components of the equipment. According to the characteristics of the whole equipment, the main part of the whole equipment is divided into four parts, and the dynamic model of the core mechanism of the equipment body, the push-pull mechanism, is established by using the drawing method. And the step function is introduced to simulate the motion of piston rod in actual working condition. By using MATLAB, the curves of angular velocity and angular acceleration of the final assembly (in order to facilitate the analysis of the brushing mechanism and the main beam mechanism as a whole) are obtained, and the calculation system of the equipment is established. The dynamic equations of the other three mechanisms are established based on the calculation system. The virtual prototype of the whole equipment is established based on ADAMS, the whole operation process of the equipment is simulated, and the curves of angular velocity and angular acceleration, velocity and acceleration of the assembly are analyzed respectively when each mechanism of the equipment is working. In order to provide theoretical support for the following optimization work, the stress of the main hinge points in the equipment is analyzed.
【學位授予單位】：蘭州理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM615
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