Vibration Analysis And Optimal Design Of Vibration Suppression Structure For Orbital Photography Robot

With the development of technology in the broadcasting industry,more and more cool TV production and packaging technology has injected new vitality into the originally boring TV programs,such as the dazzling opening screen and various cute and playful subtitles throughout the program.Among all the programming techniques,one of the technologies we have to say is virtual studio technology including photographic robots.Therefore,this paper briefly describes the development of virtual studio technology at home and abroad,and introduces in detail the development status of the core part of the photography robot and the status quo of related technologies.Based on the problem of noise and picture jitter in the actual shooting process of the orbiting robot,this paper makes a detailed analysis of the vibration characteristics of the three main vibration sources—the wheel-rail system,the traveling trolley transmission system and the pan-tilt system—by using relevant theories.Firstly,based on the existing orbital photographic robot products and the vibration and noise problems that occur in the actual use process,the physical model and mathematical model of the small wheel train-orbit vibration system are established,and the coupled vibration equation of the wheel-rail system is finally obtained.When solving the equation,the results are guaranteed to have certain precision and stability.The existing numerical integration method is compared and analyzed,including the principle of solving each numerical integration method,the solution results for different systems and their comparison.Then the actual product is analyzed as an example.The actual vibration test was carried out to achieve the verification model.Finally,based on the established model,the vibration response of the wheel-rail system under different structural and kinematic parameters was analyzed.After analyzing the vibration characteristics of the wheel-rail system,in order to analyze the torsional vibration characteristics of the transmission system well,the related concepts and calculation methods of the torsional vibration system are briefly introduced.Then,based on the transmission structure of the existing products,the transmission system is twisted.The physical model and mathematical model of the vibration;and the parameters of the actual robot product are also used as the example analysis;finally,the vibration response of the transmission system under different structural parameters is analyzed.As the end mechanism of the photographic robot,the PTZ system is the support component of the camera and provides two degrees of freedom for the camera pan and tilt.Therefore,the vibration characteristics of the PTZ system have the most direct influence on the quality of the captured picture.Based on the actual assembly structure,the vibration source is the internal worm gear reducer,so the physical model and mathematical model of the worm reducer are established.Before solving the actual example,the internal excitation parameters of the worm gear are calculated,including the stiffness.Excitation and error excitation;then the vibration characteristics of the worm gear are simulated and the Bird's section is drawn.Finally,the vibration characteristics of the worm reducer under different structural parameters are analyzed,which provides a theoretical basis for the subsequent optimization design.The vibration characteristics analysis results of each system of the photographic robot are integrated,and the main structure is optimized according to the actual processing and installation conditions,and the simulation comparison analysis is performed again to verify the effectiveness of the structure optimization.