Zero-Compliance System Using Negative Stiffness

(2nd report: Experimental study)

Abstract

A suspension system is proposed whose compliance for direct disturbance forces is zero. The zero-compliance property is realized by connecting a conventional spring and an active suspension mechanism with a linear actuator in series. The active suspension is designed to have negative stiffness for disturbance forces acting on the suspended mass. The fundamental properties of the proposed system are studied both theoretically and experimentally.