The purpose of this paper is comparing the performance of two robust control designing approaches in smart structures. First, an accurate model of a homogeneous plate with special boundary conditions is derived by using of modal analysis. Then, some primitive p late’s modes are considered as nominal system and the remaining modes are left as a multip licat ive unstructured modelling uncertainty...

A male Morpho peleides butterfly wing is decorated by two types of scales, cover and ground scales. We have studied the optical properties of each type of scales in conjunction with the structural information provided by cross-sectional transmission electron microscopy and computer simulation. The shining blue color is mainly from the Bragg reflection of the one-dimensional photonic structure, ...

Starbug is a robotic positioning development concept for deploying many payloads, such as pickoff optics, optical fibres, integral field units, to micron level accuracy over a flat or curved focal surface. With a heritage of fibre positioners such as 2dF, OzPoz and FMOS-Echidna, this concept addresses some of the limitations of other positioning systems to provide a reliable, cost effective way...

A city like Bengaluru has over millions of cars and two-wheelers on its roads but it does not have enough parking space. So, a system like “Automated Smart Car Parking” must be introduced so that it solves parking space problem and reduces time required in searching for parking space. This proposed system introduces us to one of the most efficient methods of car parking. This is done by designi...

The paper proposes and develops a novel smart ER microactuator with inherent position feedback mechanism. The microactuator consists of a pair of movable and fixed parallel plate electrodes with variable gap length and an upstream restrictor, and ERF (electro-rheological fluid) is supplied as a working fluid. By applying voltage to the electrodes, with the increased pressure drop due to ERF vis...

Character recognition techniques associate a symbolic identity with the image of character. Character recognition software recognizes text characters in electronic files, usually scanned documents that are saved as images and are not immediately text-searchable. Character recognition software is also known as optical character recognition or OCR, because it uses to optical properties of text to...

in this paper, a nonlinear free vibration analysis of thin annular functionally graded (fg) plate integrated with two uniformly distributed actuator layers made of piezoelectric (pzt4) material on the top and bottom surfaces of the annular fg plate is presented based on kirchhoff plate theory. the material properties of the fgm core plate are assumed to be graded in the thickness direction acco...

Vehicular sensor networks are emerging as a new network paradigm of primary relevance, especially for proactively gathering monitoring information in urban environments (proactive urban monitoring). Each vehicle, which typically has no strict constraints on processing power and storage capabilities, can sense one or more events (e.g., imaging from streets and detecting toxic chemicals), process...

extended abstract 1. introduction today the irregular growth of the population and its illogical distribution across natural and cultural environments of different communities has necessitated sustainable development in response to the unstable conditions of cities. mashhad is a city with fast growth and development but with no clear plan, especially after land reform program. in this sense, th...

In the present paper, a review on piezoelectric sensing of mechanical deformations and vibrations of so-called smart or intelligent structures is given. After a short introduction into piezoelectric sensing and actuation of such controlled structures, we pay special emphasis on the description of some own work, which has been performed at the Institute of Technical Mechanics of the Johannes Kep...