Polyelectrolyte networks composed of poly(acrylic acid) (PAAc) cross-linked with poly(ethylene glycol dimethacrylate) (PEGDA) are sensitive to electrical stimuli, allowing potential use as soft actuators. In our studies, PAAc was prepared via radical polymerization using UV irradiation from pregel solutions with independent variation of the crosslinking density, the extent of neutralization, as...

In the last decades the increment of processing power of digital controllers has lead to noteworthy improvements in planning and robot control. Interesting results have been achieved in the impedance control of stiff actuators, where, thanks to very accurate force measurements and fast control loops, it has been possible to perform challenging interaction tasks. More recently, roboticists have ...

This article presents the hardware requirements and functionality of hovercraft vehicle designed by A-Team for 9th "Hungarians on Mars" student competition. The focuses electronic development as well design controller. provides a detailed description structure hovercraft, We introduce basic mechanical model hovercraft. When we show collect actuators would like to electric which able control the...

Compared to non-amputees, above knee amputees expend significantly more metabolic energy. This is a result of the passive nature of most knee prostheses, as the development of clinically successful powered knee prostheses has remained a challenge. The addition of powered elements, such as electric motors, allow prosthetic knees to more closely emulate natural knee biomechanics. However, the add...

Electric circuit analysis determines the voltage and current distribution in an electric circuit due to applied source voltages or currents. In a static (DC) electric circuit analysis, the voltage and current distribution in an electric circuit is determined that is subjected to applied DC source voltages or currents. In a harmonic (AC) electric circuit analysis, the voltage and current distrib...

Piezoelectric actuators and sensors have been broadly used for design of smart structures over the last two decades. Different theoretical assumptions have been considered in order to model these structures by the researchers. In this paper, an enhanced piezolaminated sandwich beam finite element model is presented. The facing layers follow the Euler-Bernoulli assumption while the core layers a...

We demonstrate the first electric field induced transverse deflection of a single-crystal, free-standing ZnO microbelt as a result of converse piezoelectric effect. For a microbelt growing along the c-axis, a shear stress in the a-c plane can be induced when an electric field E is applied along the a-axis of the wurtzite structure. As amplified by the large aspect ratio of the microbelt that gr...

Antiferroelectrics (AFE) can exhibit a “shape memory function controllable by electric field”, with huge isotropic volumetric expansion (0.26%) associated with the AFE to Ferroelectric (FE) phase transformation. Small inverse electric field application can realize the original AFE phase. The response speed is quick (2.5 ms). In the Pb0.99Nb0.02[(Zr0.6Sn0.4)1-yTiy]0.98O3 (PNZST) system, the shap...

This study deals with the control of a hybrid vehicle powertrain, composed of three actuators (one engine, two electric machines). This powertrain belongs to the Electric-Infinitely Variable Transmission (E-IVT) class. In order to achieve low fuel consumption, drivability and electric power management, controllers have to achieve simultaneously three specifications, namely engine speed, wheel-t...

Printing functional materials represents a considerable impact on the access to manufacturing technology. In this paper we present a methodology and validation of print-and-self-fold miniature electric devices. Polyvinyl chloride laminated sheets based on metalized polyester film show reliable self-folding processes under a heat application, and it configures 3D electric devices. We exemplify t...