Rotary Actuator Driven Vibration Isolation

摘要

An active vibration isolation system for isolating a suspended platform from vibration input to the vibration isolation system base includes an exoskeleton which supports the suspended platform relative to the base. The exoskeleton includes first and second scissors mechanisms with main links of unequal length. The main links pass through a parallel condition as the suspended platform moves over its intended range of travel relative to the base. The vibration isolation system may include a rotary actuator and a drive mechanism separate from the exoskeleton for providing force output from the rotary actuator to the suspended platform. The rotary actuator may include inner and outer rotors which rotate relative to each other and may be free to rotate relative to the exoskeleton. The rotary actuator may be free to translate relative to the vibration isolation system base and the suspended platform.

主权项

1. A vibration isolation system having a suspended platform, a base and an exoskeleton, the exoskeleton comprising;
a first scissors mechanism comprising first and second main links of unequal length and first and second secondary links, where the first and second main links are pivotably coupled to each other at an intermediate point, a second scissors mechanism comprising third and fourth main links of unequal length, and third and fourth secondary links, where the third and fourth main links are pivotably coupled to each other at an intermediate point, wherein the first and second scissors mechanism support the suspended platform relative to the base over an intended range of travel, wherein the first and second main links pass through parallel as the vibration isolation system is displaced over the intended range of travel and the third and fourth main links pass through parallel as the vibration isolation system is displaced over the intended range of travel.