Strain sensing with a piezoelectric biopolymer

Richter, Hanz; Torres, Fernando G.; Sanchez, Jennifer

doi:10.1201/9781439828441.ch225

Cited by 2 publications

(1 citation statement)

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“…Furthermore, the materials are valued for their ability to directly convert electrical to mechanical forces at nanometer resolution without mechanical transmissions, which might introduce assembly or operating tolerances greater than the desired nanometer precision. Recently, these materials have been used for actuating devices of micro‐electro‐mechanical systems , a micromechanical disk resonator for the ultra high frequency (UHF) band , a micro‐actuator for hard disk drives and servo valves , a biomedical sensing technology , and a tactile sensor for Braille pattern recognition .…”

Section: Introductionmentioning

confidence: 99%

Active Disturbance Rejection Control for Piezoelectric Beam

Zheng¹,

Richter²,

Gao³

2014

Asian Journal of Control

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Piezoelectric beam dynamics are characterized by elastic properties, nonlinearities, uncertainties, and unknown disturbances, thus making vibration suppression a challenging control problem. To meet this challenge, a novel active control method has been designed and rigorously tested on actual hardware without the requirement of extensive modeling. In this unique approach, the piezoelectric beam dynamics, known or unknown, linear or nonlinear, and all external disturbances are treated in their totality as an input disturbance which is subsequently estimated and canceled in real time, reducing the challenging problem to a very manageable one. Simulation and experimental results demonstrate the effectiveness of this practical control method. The frequency domain characteristics of the proposed method are analyzed using Bode and describing function methods.

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Section: Introductionmentioning

confidence: 99%