飞轮减振实验平台被动减振机理及其多学科设计优化
发布时间：2019-03-09 18:43
【摘要】：航天器飞轮工作时产生的振动是影响有效载荷工作的主要扰动源，国内外学者通过各种方法对飞轮的振动进衰减控制，以减少有效载荷的振动响应，提高航天器有效载荷的分辨率。 为此，本文以武器装备预研重点基金项目[9140A2011QT4801]为依托，建立了基于形状记忆合金被动减振的飞轮控制系统，采用虚拟样机仿真与实验相结合的方法验证了该系统的有效性，并对其进行了多学科设计优化，论文的创新点和主要研究工作如下： （1）从其本构模型及性质出发分析了其耗能减振原理，采用模糊层次分法对当前研究应用较多的几种形状记忆合金材料进行定性及定量的对比，指出TiNi记忆合金在工程应用领域的优势。 （2）采用形状记忆合金被动减振方式构建了飞轮控制系统及其动力学模型，飞轮控制系统被动减振机理分析、仿真分析一致表明，基于形状记忆合金被动减振的飞轮控制系统的振幅随着记忆合金弹簧-阻尼结构阻尼值的增加而明显减小，在不同频率下，基于记忆合金弹簧-阻尼结构的被动减振飞轮控制系统模型的振动幅值要比非减振飞轮控制系统模型振动幅值降低明显，并具有较好振动衰减效果。 （3）采用iSIGHT集成ADAMS的方法建立了飞轮减振实验平台的多学科设计优化模型，，通过iSIGHT对模型进行优化分析，得出最优解。
[Abstract]:The vibration of spacecraft flywheel is the main source of disturbance affecting payload work. Scholars at home and abroad control the vibration of flywheel by various methods in order to reduce the vibration response of payload. Improve the resolution of spacecraft payload. Therefore, a flywheel control system based on the passive vibration reduction of shape memory alloy is established based on the key project [9140A2011QT4801] of weapon equipment pre-research. The effectiveness of the system is verified by the method of virtual prototype simulation and experiment, and the effectiveness of the system is verified by the method of virtual prototype simulation and experiment. The innovation and main research work of this paper are as follows: (1) the principle of energy dissipation is analyzed based on its constitutive model and properties. The advantages of TiNi memory alloy in engineering application are pointed out by the qualitative and quantitative comparison of several kinds of shape memory alloy materials which have been studied and applied in recent years by using fuzzy hierarchy process (FAHP). (2) the flywheel control system and its dynamic model are constructed by using the shape memory alloy passive damping method. The passive damping mechanism of the flywheel control system is analyzed, and the simulation analysis shows that the dynamic model of the flywheel control system is consistent. The amplitude of the flywheel control system based on the passive vibration reduction of shape memory alloy decreases obviously with the increase of damping value of the memory alloy spring-damping structure. The vibration amplitude of passive vibration absorption flywheel control system model based on memory alloy spring-damping structure is obviously lower than that of non-vibration damping flywheel control system, and the vibration attenuation effect is better than that of non-vibration damping flywheel control system model. (3) the multidisciplinary design optimization model of flywheel vibration control experiment platform is established by using iSIGHT integrated ADAMS method. The optimization analysis of the model is carried out by iSIGHT, and the optimal solution is obtained.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TH133.7;TB53
本文编号：2437752
[Abstract]:The vibration of spacecraft flywheel is the main source of disturbance affecting payload work. Scholars at home and abroad control the vibration of flywheel by various methods in order to reduce the vibration response of payload. Improve the resolution of spacecraft payload. Therefore, a flywheel control system based on the passive vibration reduction of shape memory alloy is established based on the key project [9140A2011QT4801] of weapon equipment pre-research. The effectiveness of the system is verified by the method of virtual prototype simulation and experiment, and the effectiveness of the system is verified by the method of virtual prototype simulation and experiment. The innovation and main research work of this paper are as follows: (1) the principle of energy dissipation is analyzed based on its constitutive model and properties. The advantages of TiNi memory alloy in engineering application are pointed out by the qualitative and quantitative comparison of several kinds of shape memory alloy materials which have been studied and applied in recent years by using fuzzy hierarchy process (FAHP). (2) the flywheel control system and its dynamic model are constructed by using the shape memory alloy passive damping method. The passive damping mechanism of the flywheel control system is analyzed, and the simulation analysis shows that the dynamic model of the flywheel control system is consistent. The amplitude of the flywheel control system based on the passive vibration reduction of shape memory alloy decreases obviously with the increase of damping value of the memory alloy spring-damping structure. The vibration amplitude of passive vibration absorption flywheel control system model based on memory alloy spring-damping structure is obviously lower than that of non-vibration damping flywheel control system, and the vibration attenuation effect is better than that of non-vibration damping flywheel control system model. (3) the multidisciplinary design optimization model of flywheel vibration control experiment platform is established by using iSIGHT integrated ADAMS method. The optimization analysis of the model is carried out by iSIGHT, and the optimal solution is obtained.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TH133.7;TB53
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