Positioning and vibration isolation are two important steps for sensitive payloads to realize precision observation in space environment. However, current base stages applied to sensitive payloads often focus on one function, thus limiting their engineering applications. This paper presents a novel parallel micro-nano positioning-vibration isolation stage (PVI stage), which could realize the two functions simultaneously. The advantages of the presented stage lie in the compactness and convenience, which determine its feasibility in limited volume. Through combination of giant magnetostrictive actuator (GMA) and compliant amplification mechanism, the requirements of large-stroke positioning and passive vibration isolation could be achieved. And three auxiliary unloading devices are designed to bear the sensitive payload for resisting the static deformations of compliant mechanism. The detailed scheme and corresponding dynamic model are constructed for showing the stage. Furthermore, finite element simulation is carried out to verify the desired performance. Finally, a prototype is fabricated and experimental tests are conducted to validate the capabilities of the stage. The test results prove that the proposed positioning-vibration isolation stage owns a compact structure and realizes micro-nano positioning and vibration isolation simultaneously, and thus shows a promising prospect in aerospace field.

定位和振动隔离是敏感载荷在空间环境中实现精确观测的两个重要步骤。但是，当前应用于敏感有效载荷的基本阶段通常只关注一种功能，因此限制了其工程应用。本文提出了一种新颖的并行微纳定位振动隔离台（PVI台），可以同时实现这两个功能。所提出的阶段的优点在于紧凑性和便利性，这决定了其在有限体积中的可行性。通过将巨磁致伸缩执行器（GMA）与顺应性放大机构结合，可以实现大行程定位和被动隔振的要求。并设计了三个辅助卸载装置来承载敏感的有效载荷，以抵抗顺从机构的静态变形。构建了详细的方案和相应的动态模型以显示阶段。此外，进行了有限元模拟以验证所需的性能。最后，制造了原型并进行了实验测试以验证舞台的功能。测试结果表明，所提出的定位隔振台具有结构紧凑，同时实现微纳定位和隔振的特点，在航空航天领域具有广阔的应用前景。进行有限元模拟以验证所需性能。最后，制造了原型并进行了实验测试以验证舞台的功能。测试结果表明，所提出的定位隔振台具有结构紧凑，同时实现微纳定位和隔振的特点，在航空航天领域具有广阔的应用前景。进行有限元模拟以验证所需性能。最后，制造了原型并进行了实验测试以验证舞台的功能。测试结果表明，所提出的定位隔振台具有结构紧凑，同时实现微纳定位和隔振的特点，在航空航天领域具有广阔的应用前景。