Li Junzhong, Wang Lei, Cao Bingzhang, Zhang Haoze, Chen Jiamin, Liu Qi, Yang Yuanyuan
Harbin Institute of Technology, Harbin 150001, People's Republic of China.
Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China.
Rev Sci Instrum. 2024 Aug 1;95(8). doi: 10.1063/5.0217099.
Vibration substantially degrades machining quality and measurement accuracy in ultra-precision processes, necessitating the implementation of vibration isolators to mitigate these effects. Magnetic vibration isolators represent a promising alternative due to their wide isolation frequency range, low energy consumption, and compatibility with vacuum environments. In designing the quasi-zero stiffness magnetic vibration isolator, the particle swarm optimization algorithm is employed to balance multiple performance indicators. To address the limitations of conventional optimization methods, which excessively prioritize stiffness and fail to encompass the entire performance spectrum of magnetic vibration isolators, this study presents an innovative optimization approach. This novel strategy directly enhances vibration isolation by integrating transmissibility and compliance considerations. Structural parameters for two types of magnetic vibration isolators were established through optimizations utilizing both conventional and innovative techniques. Simulations and experiments demonstrate that isolators developed using the proposed optimization method outperform those designed with conventional strategies, thereby validating the effectiveness of this advancement. The insights presented in this paper illuminate a novel and effective pathway for the conceptualization and refinement of magnetic vibration isolators.
在超精密加工过程中，振动会严重降低加工质量和测量精度，因此需要采用隔振器来减轻这些影响。磁隔振器因其较宽的隔振频率范围、低能耗以及与真空环境的兼容性，成为一种很有前景的替代方案。在设计准零刚度磁隔振器时，采用粒子群优化算法来平衡多个性能指标。为了解决传统优化方法的局限性，即过度强调刚度且未能涵盖磁隔振器的整个性能范围，本研究提出了一种创新的优化方法。这种新策略通过综合考虑传递率和柔度直接增强隔振效果。通过使用传统和创新技术进行优化，确定了两种磁隔振器的结构参数。仿真和实验表明，采用所提出的优化方法开发的隔振器优于采用传统策略设计的隔振器，从而验证了这一进展的有效性。本文提出的见解为磁隔振器的概念设计和优化提供了一条新颖且有效的途径。
