O. A. Garcia-Perez

TL;DR: This work deals with asymptotic trajectory tracking and active damping injection on a flexible-link robot by application of Multiple Positive Position Feedback, where the dynamic performance of the overall active vibration control scheme leads to fast and effective tracking results, with damping ratios increased up to 300%.

TL;DR: In this article, an online algebraic estimation technique for natural and forcing frequencies for a class of uncertain and lumped-parameter vibrating mechanical systems with n degrees of freedom is described.

TL;DR: This work deals with a flexible structure modeled as a tower crane, with proper servomechanisms for load manipulation, and two active vibration control schemes are employed during the synthesis of the controller, that is, Multiple Positive Position Feedback (MPPF).

TL;DR: This work deals with the application of a robust adaptive vibration control scheme on a flexible crane-type structure, which is based on Positive Feedback Control and on-line algebraic identification strategies of the most important modal parameters of the mechanical structure submitted to changes on mass, viscous damping and/or stiffness, common under variable payloads, as well as the estimation of exogenous excitation forces.

TL;DR: To facilitate the position regulation and trajectory tracking, a piezoelectric patch actuator with a Multi-Positive Position Feedback is attached to the flexible link in order to reduce, as possible, the structural vibrations excited by the control scheme on the rigid part of the robot.