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Variable magnetization pattern machines (VMPMs) capable of dynamic changes in the magnetization pattern and magnitude are discussed in this paper. These machines can behave like brushless DC machines if they have a uniform magnetization pattern. If the magnetization pattern on the permanent magnet is shaped to be sinusoidal through a controlled demagnetizing process, they could behave like brushless...
In this paper we describe how to use a Game-Based Learning (GBL) approach to help end-user programmers to develop Computational Thinking (CT) skills. CT represents a framework consisting of a set of skills such as: abstraction, decomposition and more in general problem solving expressed in a computational form (algorithmic thinking) that can be easily formalised into a computer program. Those skills...
Boundary conduction mode control is a convenient and low cost method for realizing power factor correction in boost and flyback converters. A signal proportional to the input sinusoid is used as a reference for shaping an inductor current. For a boost converter, this renders the input current to be sinusoidal, but it causes distortion in Flyback and buck derived converters. Mathematically, it can...
Handwriting synthesis generates renderings of text which look like they were written by a human but are in fact synthesized by a model. From an input sample of the desired handwriting, we introduce an algorithm that finds the best match between characters using as source for the output text the large collection of publicly available fonts designed to look like handwriting. For each character in the...
One quarter of women who undergo breast lumpectomy to treat early-stage breast cancer in the United States undergo a repeat surgery due to concerns that residual tumor was left behind. This has led to a significant increase in women choosing mastectomy operations in the United States. We have developed a mixed-reality system that projects a 3D “hologram” of images from a breast MRI onto a patient...
Hand Gesture Recognition is completed on top-view hand images observed by a Time of Flight(ToF) camera in a car. The work attempts to solve two important problems of touchless interactions inside a car. First, low latency identification of the gestures which are unobtrusive for the driver. Second, reducing the labelled data required to train learning based solutions, this is particularly important...
Simulation results are not representative of a real system behavior up to its model validation. Validation activity needs a model characterization to match real system and model parameters. This activity impacts more on mechatronics systems which are affected by both physical and control characterizations. This work deals with single bowden power window systems; it improves a system model, previously...
We propose a method for generating caustic images in real time using a deep/convolutional neural network (CNN). To do so, training images are first rendered using photon mapping, and the CNN learns the correspondences between the depth images and caustic images. After learning, the CNN generates a caustic image from a depth image within 55 milliseconds. In addition, the similarity between the generated...
The paper provides new results for testing the flow-invariance of time-dependent sets with arbitrary shapes, with respect to trajectories of continuous-time nonlinear systems. The approach represents a generalization of a criterion used in the qualitative analysis of ordinary differential equations with solutions in closed sets with hyper-rectangular form. Given a nonlinear dynamical system for investigation,...
This paper presents the design and a novel rotor shape of a 3 kW, 25000 rpm permanent magnet assisted synchronous reluctance motor (PMa-SynRM) based on a low speed benchmark model. Multiphase PMa-SynRM can operate with low torque ripple, reduced magnet volume and extended field weakening region which makes it a potential candidate for high speed motor design. However, the challenge of high speed PMa-SynRM...
In this paper, MAGnetizable CONcrete (MagCon) composite materials are introduced and studied thoroughly. MagCon material is obtained by mixing cement with a magnetic material, for example, powdered ferrite or magnetite with different aggregate ratios and sizes, and optionally adding other aggregates to the mixture. Effective relative permeability (μr, eff) of MagCon is evaluated as a function of volumetric...
Common-mode voltage (CMV) by switching pattern of space vector pulse width modulation (SVPWM) excites parasitic capacitance coupling in interior permanent magnet synchronous motor (IPMSM), and it finally causes shaft voltage. Among all parasitic capacitances, winding-to-rotor parasitic capacitance has the greatest effect on the shaft-to-frame voltage. In the study, mitigation method of a shaft-to-frame...
The landscape plant as spatial element used in the construction of parametric configuration system is a fresh concept and technical innovation. This System is aimed to help designers without botany knowledge to finish some simple plants arrangements. Through the construction of plant parametric configuration system and some typical trees and shrubs parametric database, we use examples to illustrate...
Mixed reality (MR) technologies can virtually change the appearance of real objects in real time without changing the material attributes of the objects and the associated haptic stimuli. In this study, we use MR-based visuo—haptic to investigate the mechanisms by which vision and haptics interact. In contrast to MR, diminished reality (DR) can virtually erase a real object from our sight. Because...
We present a novel, low-cost haptic feedback device for spatial design tasks that provides proprioceptive and tactile feedback. It uses the Manus VR datagloves and a custom VR CAD environment. Here, tactile feedback is provided to the index finger through a vibrating motor, which helps users in identifying points on a grid. This grid allows for alignment during the creation and manipulation of geometric...
Mobile applications with complex GUIs are very popular today. However, generating test cases for these applications is often tedious professional work. On the one hand, manually designing and writing elaborate GUI scripts requires expertise. On the other hand, generating GUI scripts with record and playback techniques usually depends on repetitive work that testers need to interact with the application...
This paper proposes a new intelligent control for an indirect vector controlled induction motor drive for high performance, based on a finite element controller map. The traditional basic conventional algorithm (PI controller) has been successfully used to obtain decoupling control between the rotor flux and the torque. The basic PI has fixed gains that cannot be increased beyond certain limits. In...
Retrieving images depend of specific features In Content Based Image Retrieval (CBIR). A common approach is to divide retrieval process into two stages; the first one is based on high-level features followed by the second that is based on low-level features. We focus primarily on medical images, and follow the above approach but make the following two basic contributions: a) introduce the gray cluster...
This work presents a procedural modeling technique based on shape grammars for representing and rendering massive 3D CAD models in real time. Procedural modeling is an appealing approach to quickly generate massive scenes while maintaining compact representation. Until now, procedural modeling has not been explored in the domain of large industrial projects. Traditional procedural modeling techniques...
Text segmentation is an important problem in document analysis related applications. We address the problem of classifying connected components of a document image as text or non-text. Inspired from previous works in the literature, besides common size and shape related features extracted from the components, we also consider component images, without and with context information, as inputs of the...
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