非线性能量阱整星减振与能量采集一体化理论与实验

The external energy restriction problem of the application of active-passive whole-spacecraft vibration control can be solved by the integration of nonlinear energy sink and energy harvesting system. In this project, the nonlinear dynamic models of the integration of nonlinear energy sink and giant magnetostrictive vibration energy harvester, magnetostrictive-piezoelectric vibration energy harvester are established respectively. Then the harmonic balance method together with the arc-length algorithm is utilized to analyze the effect of vibration control and compute the output electric power. The modeling methods of electromagnetic-mechanical coupling of the integration are investigated and the numerical simulation is carried out to verify the theoretical analysis results. The applicable embedded program of the integration of whole-spacecraft vibration reduction and energy harvester is designed and the theoretical analysis and numerical simulation results are validated with the help of experiment. Through the research of this project, the approximate analytic method of multi-degree-of-freedom nonlinear vibration system under multi-field coupling is developed and verified by numerical verification and experiment. And how the parameters influence the vibration control effect and obtained electric power is also clarified. The research will expand the application of nonlinear vibration theory and enrich the multi-field coupling nonlinear dynamics theory. In the meantime, the study will lay the theoretical foundation and provide technical basis for designing and optimizing the structure of the integration of whole-spacecraft vibration reduction and energy harvesting, broadening the category of power generation equipment of spacecraft.

非线性能量阱整星减振与能量采集一体化系统能够解决主被动一体化整星振动控制应用外界能源限制问题。本项目通过非线性能量阱整星减振与超磁致伸缩式振动能量采集、超磁致伸缩-压电复合式振动能量采集一体化系统非线性动力学模型，应用和发展谐波平衡法结合弧长延伸跟踪算法，近似解析分析系统振动控制效果和输出电功率；研究非线性能量阱整星减振与能量采集一体化系统机电磁耦合仿真建模方法，数值验证理论分析结果；研发适用于整星系统的减振与能量采集一体化嵌入式方案，实验验证理论分析和数值仿真结果。通过本项目研究，发展多场耦合作用下多自由度非线性振动系统的近似解析方法并进行数值验证和实验验证，明确减振与能量采集一体化参数对系统振动控制效果及输出电功率影响。研究成果将拓展非线性振动理论的应用，丰富多场耦合非线性动力学理论；同时为设计和优化整星减振与能量采集一体化结构，拓宽航天电源系统发电装置种类奠定理论基础和提供技术储备。

非线性能量阱整星减振与能量采集一体化系统能够解决整星振动控制应用外界能源限制问题。本项目提出了超磁滞伸缩材料振动能量采集与非线性能量阱整星减振一体化设计方案、压电压磁振动能量采集与非线性能量阱整星减振设计方案、悬浮式磁电能量采集器与非线性能量阱整星减振一体化设计方案、惯容器非线性能量阱振动控制和振动能量采集一体化设计方案，并分别通过理论分析、数值仿真分析了系统振动控制效果和输出电功率。研发了适用于整星系统的减振与能量采集一体化嵌入式方案，实验验证了理论分析和数值结果，其结果表明，引入非线性减振器与超磁致伸缩能量采集的一体化装置可以显著的降低共振频率处的峰值，并有很好的能量采集效果。本项目研究成果拓展了非线性振动理论的应用，丰富了多场耦合非线性动力学理论，同时为设计和优化整星减振与能量采集一体化结构，拓宽航天电源系统发电装置种类奠定了一定的理论基础和提供了技术储备。