VIBRATION ISOLATION SYSTEM

摘要

An omnidirection vibration-isolating suspension system (10) includes several composite isolators (12) which resiliently support the object to be isolated on a payload platform (14). Each composite isolator (12) includes a vertical-motion isolator operatively connected with a horizontal-motion isolator. The vertical-motion isolator includes a support spring (18) which connects to a center hub assembly (20) and base platform (22). The spring (18) supports the weight of the payload that is transmitted to the center hub assembly through the horizontal-motion isolator that is operatively connected between the central hub assembly (20) and the payload platform (14). A negative-stiffness mechanism is also connected to the center hub assembly (20) to counteract the positive stiffness in the spring (18). The horizontal-motion isolator includes three flexible beam-columns (36) in the form of cylindrical rods that are operatively connected to the vertical-motion isolator.