Abstract

The paper discusses the application of nonlinear saturation controls based on the second method of Lyapunov to the active control of vibration of linear structures. The spillover instability associated with the neglected dynamics is demonstrated. A spillover alleviation procedure is presented and demonstrated. It consists of a local modification of the control in the vicinity of the equilibrium, which makes the composite system (controlled modes-observer-neglected dynamics) benefit from the inherent stability properties of the open loop system.

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