Abstract Free-piston linear generator (FPLG) is a novel power source which combines free-piston engines and a linear electric generator. Piston motion and vibration excitation characteristics of FPLG are quite different from the traditional reciprocating engines. This paper aims to clarify the vibration excitation mechanism of FPLG and propose an effective vibration isolation method. The dynamic simulation model of FPLG piston and vibration isolation system are established to solve the special lateral vibration isolation problem, and the vibration excitation mechanism of FPLG is revealed. The influences of mounting parameters on the FPLG vibration is analyzed by the energy decoupling and response surface method. In addition, an effective optimization design method considering comprehensive vibration isolation indices is proposed. By verifying with the simulation model of FPLG vibration isolation system, the proposed method can realize the effective vibration isolation. The analyses will provide guidance for the vibration reduction design of the novel power sources with similar motion characteristics.

中文翻译：

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一种新型电源隔振方法研究

摘要 自由活塞线性发电机(FPLG)是一种结合自由活塞发动机和线性发电机的新型动力源。FPLG 的活塞运动和振动激励特性与传统的往复式发动机有很大不同。本文旨在阐明FPLG的激振机理，提出一种有效的隔振方法。针对特殊的横向隔振问题，建立了FPLG活塞与隔振系统的动力学仿真模型，揭示了FPLG的激振机理。采用能量解耦和响应面法分析了安装参数对FPLG振动的影响。此外，提出了一种考虑综合隔振指标的有效优化设计方法。通过FPLG隔振系统仿真模型验证，该方法能够实现有效的隔振。分析结果将为具有相似运动特性的新型动力源的减振设计提供指导。