The Structural Design Research On Single Load Opto-electronic Stabilized Platform

Multi-rotor UAV is a very own characteristics of the aircraft,which is easy manipulation,high reliability and easy maintenance advantages.And at the same time,its vibration is complicated,battery life is weak,deadweight is low.How to combine the characteristics of multi-rotor UAV design a photoelectric stabilized platform will have some practical significance. In this paper, design a single load photoelectric stabilized platform for this type of UAV independently developed by the research group,and use finite element software to analyze the vibration characteristics of the photovoltaic platform.Firstly,this paper provides an overview of the photovoltaic platform and abroad, the development trend of optoelectronic platform summarized. In the analysis of the various models of other opto-electronic platform,three problems are summed up:poor security, insufficient damping performance, excessive weight. For the three questions on the head to start design work. Determine the lightweight, high strength, good workability 2A12 aluminum alloy as the material of opto-electronic platform. Select the various related components,including camera,brushless motor,sensor, control circuit, damping ball.Design the platform by using SolidWorks.Secondly, Using finite element analysis software ANSYS Workbench,conduct a static analysis and a dynamic analysis of opto-electronic platform.Test the stiffness and strength of the various parts and I have come to the conclusion insufficient stiffness of the connecting arm and surplus strength of motor block. Conduct a dynamic analysis opto-electronic platform for the complicated vibration situation of multi-rotor UAV. The use of the accelerometer for vibration data UAVs were sampled, vibration acceleration spectrum obtained UAV.Find the vibration frequency of UAVs were situated at 60 Hz, 120 Hz, 140 Hz, 180 Hz. Use finite element analysis software ANSYS Workbench to conduct opto-electronic platform dynamic analysis. First, conduct opto-electronic platform damping system dynamic analysis and conduct a response spectrum of opto-electronic platform supported the conclusion that the damping system can effectively reduce the vibration.Sencond, conduct opto-electronic platform dynamic analysis and find the damping system can reduce 45.1% vibration.Thirdly, Use finite element analysis software ANSYS Workbench to analy problems in some parts studied before and summed up the relationship between the structural parameters and its structural rigidity. And take advantage of this conclusion to optimize the opto-electronic platform.After it optimized, The maximum displacement of the opto-electronic platform that occur under the action of gravity is 0.9818 mm, 8.9273 mm reduced than before. The maxium Amplitude of opto-electronic platform at vibration environment of UAVs is 0.512 mm. Prove that the opto-electronic platform design on the damping properties have good performance, the design of the future multi-rotor UAV photoelectric stabilized platform has a certain reference value.