Piezoelectric beams are widely used in micro-electromechanical systems. At the microscale, influence of size effect on a piezoelectric beam cannot be ignored. In this paper, higher-order elasticity theories considered to predict behaviors micro-structures and size-dependent dynamic model laminated microbeam is established. The governing equations for derived using variational principle. natural...

The paper deals with the mechanical behavior of a micro-beam bonded with two piezoelectric layers. The micro-beam is suspended over a fixed substrate and undergoes the both piezoelectric and electrostatic actuation. The piezoelectric layers are poled through the thickness and equipped with surface electrodes. The equation governing the micro-beam deflection under electrostatic pressure is deriv...

Commercially available mirrors for scanning long-wavelength beams are too large for high-speed imaging. There is a need for a smaller, more agile pointing apparatus to provide images in seconds, not minutes or hours. A fast long-wavelength beam steerer uses a commercial micro-electro-mechanical system (MEMS) mirror controlled by a high-performance digital signal processor (DSP). The DSP allows ...

Electromechanical coupling is a topic of current interest in nanostructures, such as metallic and semiconducting nanowires, for a variety of electronic and energy applications. As a result, the determination of structure-property relations that dictate the electromechanical coupling requires the development of experimental tools to perform accurate metrology. Here, a novel micro-electro-mechani...

The present work revisits the reduction of nonlinear dynamics an electromechanical system through a quasi-steady state hypothesis, discussing fundamental aspects this type approach and clarifying some confusing points found in literature. Expressions for characteristic time scales are deduced from physical analysis that establishes analogy between kinetics chemical reaction. It provides justifi...

The article is concerned with energy conservation in the process of cleaning grain. study aimed to find ways reducing consumption when food grains by using energy-saving operating modes (ESOM) on production lines grain storage facilities. For this purpose, experimental tests were performed which involved studying effects physical and chemical properties as well influence various specific (SEC),...

The article presents a method of fuzzy cognitive modeling for heterogeneous electromechanical systems (HEMSs) in the management innovative design solutions. During operation HEMSs, as result their operational aging, properties windings parametric matrices and HEMSs vector space change. Periodic testing allows obtaining reliable information about current technical condition its changes during ri...