Cantilever beams have an important role in day to day life in bridges, towers, buildings and aircraft wings, making active vibration suppression a highly researched field. The purpose of this paper is to detail the design of fractional order PID controllers for smart beams. A novel tuning procedure is proposed based on solving a set of nonlinear complex equations that directly aim at reducing t...

This paper presents a novel concept of active pneumatic suspension which uses an accumulator, airspring, and smart control system to actuate a variable orifice mechanism which connects the airspring to the accumulator. The main objective is to obtain a linear model for this pneumatic suspension so as to use existing advanced linear control methodologies to ascertain the closed loop performance ...

Both economical and ecological factors might encourage conventional machines to continue in service by healing tool vibration problems. Higher productivity in automated manufacturing system brought to the attention the importance of machine tool error elimination. Various factors might affect the machining process (Merritt, 1965), some of them are non-measurable, and others might change in real...

Design and control of smart structures, which can perform optimally despite different environmental influences represents an important research challenge. Very often the optimality performance is influenced by the lack of robustness of mechanical systems due to unmodeled dynamics and external influences. In this paper we tackle the problem of a robust controller design for the vibration suppres...

In this paper a magnetostrictive material (Terfenol-D) based active vibration control of high amplitude has been proposed. A single link planar flexible manipulator with rotary joint has been modelled using Terfenol-D as smart active material. H-infinity filter is used in the context to estimate the tip deflection (position) and deflection rate (velocity) of the flexible manipulator based on wh...