We developed a passive haptic technique, using the brake of a DC motor, to create a greater perception of impulse force. We found that when using the brake of a DC motor, delivering two short pulses immediately prior to the main brake significantly increases the operator’s perception of impulse force. This finding was verified during our empirical assessment. In the experiment, all five partici...

The Image Foresting Transform (IFT) is a framework for image partitioning, commonly used for interactive segmentation. Given an image where a subset of the image elements (seed-points) have been assigned user-defined labels, the IFT completes the labeling by computing minimal cost paths from all image elements to the seed-points. Each image element is then given the same label as the closest se...

In real life applications, inverse problems, such as the electrical impedance tomography problem, usually have a limited accuracy, and require huge computation resources to be solved correctly. In electrical impedance tomography, the goal is to obtain the electrical properties of different materials (typically living tissues) by applying an electrical current and measuring the resulting potenti...

This paper presents a new method for simulation of power bipolar devices. The method is based on the solution of the Ambipolar Diffusion Equation (ADE) with a finite element (FE) [ 1 ] approach. This one allows analog solutions for ADE through an equivalent electrical network. So the method could constitute the core for power bipolar devices simulation into any electrical circuit simulator.

Performing fast and accurate methods for modeling the electrical machines has been the subject of several studies and many authors proposed different procedures to attain this aim. Beside the accuracy, the speed of the method is of great concern. On the other hand, the capability of the method to be changed according to the need is another important issue. Finite Element method provides relativ...

Undesired secondary effects occurring at inerter-fed squirrel cage induction motors are investigated by a transient two-dimensional finite element analysis with coupled electrical circuits. Calculated time-dependent numerical courses are compared to measured ones. A novel and deeper insight into the invoked harmonic spectrum of the electrical stator current and the mechanical torque at the rota...

We present a physics-based finite-element model of operation of an AlGaN/GaN HEMT with device geometry inputs taken from transmission electron microscope cross sections and calibrated by comparison with measured electrical data comprising standard field-effect transistor metrics and less wellknown model parameters. A variety of electrical outputs from the model are compared to experiment, and t...

Finite element analysis procedures are utilized to provide theoretical calibration curves for the electrical potential crack-monitoring system as applied to single-edge-notch (SEN) and compact tension (CT) fracture specimens. The results are compared to existing calibrations for such test piece geometries derived using experimental, electrical analog and analytical (conformal mapping) procedures.