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40 results for “planar”
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Research ArticleOpen accessEvery word in the titleSingularity Analysis of a Hybrid Serial-Cable Driven Planar RobotSamir Lahouar, Lotfi RomdhaneIn this study, we address the problem of singularities of a hybrid serial-cable driven planar robot. Based on an analytical kinetostatic analysis three types of singularities are determined, i.e., serial, parallel, and combined singularities. In addition, cable tensions should be positive, otherwise, the robot will be uncontrollable. The serial singularity corresponds to positions where the serial port of the robot … …American Journal of Engineering and Applied Sciences, Vol. 15, Issue 3 · 26 Sep 2022 · 5,610 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDevelopment of Wideband Planar Inverted-F Antennas for Wireless ApplicationSaida Ibnyaich, Abdelilah Ghammaz, Moha M’Rabet HassaniProblem statement: Due to the rapid development in wireless communication, the antennas capable of broad-band operations are very demanding in cellular communications systems. Among various possible antennas, planar inverted-F antennas (PIFAs) have the advantages of low profile and compact size and are very suitable for present-day wireless communication application. Approach: This study demonstrates a very effective method of bandwidth enhancement … …Journal of Computer Science, Vol. 7, Issue 8 · 14 Jul 2011 · 6,616 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDesign and Optimization of a 1.55 µm Waveguide Based on Silicon Planar Photonic CrystalsR. Bchir, A. Bardaoui, M. Machhout et al.Background: Silicon based Planar Photonic Crystals (PPC) are used for the design of a 1.55 µm waveguide. Line defects are then formed in the PPC structures, by removing rows of holes, to obtain a Planar Photonic Crystal Waveguide (PPCW). Objective: First, we varied the thickness of the Silicon slab and the pore radius in order to obtain optimum design parameters … …American Journal of Applied Sciences, Vol. 7, Issue 1 · 31 Jan 2010 · 7,476 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleSome Aspects of the Structure of Planar MechanismsRelly Victoria Virgil Petrescu, Raffaella Aversa, Bilal Akash et al.The machine is a technical system made up of distinct kinematic component parts (called kinematic elements) which, following the imprinting of movements imposed on an element or elements (considered as leading elements), cause movements to all other kinematic elements in order to execute a useful mechanical thing, or transforming some form of energy into mechanical energy. It follows from the … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 1 · 8 Feb 2018 · 8,025 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDesign of Pass Band Filter in Hybrid Architecture Planar/Non-Radiative Dielectric Waveguide Integration TechnologyGharssallah Ali, Harizi HanenProblem statement: The expansion of RF, microwave and millimeter devices has revolutionized today’s ommunication and sensor systems. Low-cost, high-performance and mass producible millimeter wave technologies are vital for commercial broadband systems. Challenging issues are commonly faced in the design of low-loss integrated circuits for example high-Q band pass filter, which the planar technique is fundamentally limited in performance. Approach: In … …American Journal of Applied Sciences, Vol. 9, Issue 10 · 10 Aug 2012 · 7,094 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleQuantum Hadamard Gate Implementation Using Planar Lightwave Circuit and Photonic Crystal StructuresShamsolah Salemian, Shahram MohammadnejadAn all optical method has been proposed for quantum Hadamard gate implementation. This quantum gate was realized by using Y-junction beam splitter. Normal modes in waveguides have been used as quantum bit. This all optical gate can be used in quantum computation and communication. The proposed Hadamard gate has potential of being more compact and easily realized compared to other … …American Journal of Applied Sciences, Vol. 5, Issue 9 · 30 Sep 2008 · 7,928 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleStructural-Topological Synthesis of Planar Mechanisms with Rods and WheelsNicolae Petrescu, Raffaella Aversa, Antonio Apicella, Relly Victoria V. PetrescuToday, robots are increasingly present in the machine building industry, sometimes even in some sections to replace workers altogether, due to the high quality of their work, repetitive, without stopping or pausing, without any manufacturing and assembly scuffs. Additionally, robots do not get sick, do not require medical leave or rest, work faster and better than humans and also support … …Journal of Mechatronics and Robotics, Vol. 2, Issue 1 · 25 Jun 2018 · 6,644 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA Geometric Generalization of the Planar Gale-Nikaidô TheoremE. Cabral BalreiraThe Gale-Nikaidô Theorem establishes global injectivity of maps defined over rectangular regions provided the Jacobian matrix is a P-matrix. We provide a purely geometric generalization of this result in the plane by showing that if the image of each edge of the rectangular domain is realized as a graph of a function over the appropriate axis, then the map is … …Journal of Mathematics and Statistics, Vol. 14, Issue 1 · 30 May 2018 · 7,561 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDynamic Kinematics of the Plan Balanced Chain at the Planar Module 3RRelly Victoria Petrescu, Raffaella Aversa, Antonio Apicella, Florian Ion Tiberiu PetrescuAnthropomorphic robots are, as I have already said, in most of the most widespread and widely used works worldwide today, due to their ability to adapt quickly to forced work, working without breaks or breaks 24 h a day, without unpaid leave without asking for food, water, air, or salary. Anthropomorphic robots are supple, elegant, easy to configure and adapted … …Journal of Mechatronics and Robotics, Vol. 2, Issue 1 · 8 Mar 2018 · 6,948 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Dynamics of the Planar Cinematic Balanced Chain at the Plan Module 3RRelly Victoria Petrescu, Raffaella Aversa, Antonio Apicella, Florian Ion Tiberiu PetrescuIn some previous papers, the mechatronic module 3R, plan, is a basic module on which the complete, geometric, cinematic, dynamic calculation of the anthropomorphic robots, the most used today's industrial robots, is built. The importance of the study of anthropomorphic robots has also been signaled, being today the most widespread robots worldwide, due to its simple design, construction, implementation, operation … …Journal of Mechatronics and Robotics, Vol. 2, Issue 1 · 22 Jan 2018 · 7,115 accessesView PDFCite