Reduction of vibration amplitude in vibration-type electricity generator using magnetic wire

Vibration of a Shape Memory Alloy Wire

Helicopter Vibration Reduction Using Robust Control

This dissertation presents a control law for helicopters to reduce vibration and to increase damping using individual blade control. control synthesis is used to develop a robust controller usable in different operating conditions with different helicopter flight speeds. The control design is applied in simulation to the four-blade BO 105 helicopter rotor, which is equipped with an individual b...

Design of Vibration-based Miniature Generator Using Piezoelectric Bender

For the use of green energy and ubiquitous computing, this study investigates miniature electric generators that are constructed with piezoelectric benders. Electric power is generated by vibratory deformation of piezoelectric benders. Three different designs of piezoelectric generators are created and compared in this study by using mechanics analysis. The result shows that the cantilever desi...

Reference Command Shaping Using Specified-Negative-Amplitude Input Shapers for Vibration Reduction

Systems,’’ IEEE Trans. Autom. Control, AC-45~2!, pp. 295–299. @16# Laub, A. J., and Arnold, W. F., 1984, ‘‘Controllability and Observability Criteria for Multivariable Linear Second-Order Models,’’ IEEE Trans. Autom. Control, 29~2!, pp. 163–165. @17# M. Ikeda, 1990, ‘‘Zeros and Their Relevance to Control-@III#; System Structure and Zeros ~in Japanese!,’’ Journal of the Society of Instrument and...

Micro-electrostatic Vibration-to-electricity Converters

Advances in low power VLSI design, along with the potentially low duty cycle of wireless sensor nodes open up the possibility of powering small wireless computing devices from scavenged ambient power. Low level vibrations occurring in typical household, office, and manufacturing environments are considered as a possible power source for wireless sensor nodes. This work focuses on the design of ...