613 research outputs found

    Development of a microcontroller-based control system with a hardware-in-the-loop (HIL) method for control education using MATLAB/simulink/xPC Target

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    This paper discusses the development of a microcontroller-based control system with hardware-inthe-loop (HIL) for enhancing the teaching of control engineering. This system consists of both hardware and software. The software tools MATLAB/Simulink/xPC Target by MathWorks, Inc and a C++ compiler are used to simulate the physical system (plant) to be controlled, while the hardware include a microcontroller as a controller and interfacing circuits to allow communication between the simulated plant and the real controller. This proposed system is inexpensive and allows students to carry out extensive experimental investigations, as well as the design, implementation, performance evaluation and comparative studies of controllers. A case study of the controller design and implementation for an active suspension system is presented to illustrate the application of the proposed system

    Amphibious Drone

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    This report details the progress made in continuing the UPLOAD Amphibious Drone Capstone project. Alex Desilets has tasked the team with improving last years design and has offered support with financial and technical matters through the design process. The UPLOAD MK. II team has been tasked with improving the design made by the original UPLOAD team from last year. The team from last year designed a UAV capable of delivering a payload over both land and sea over a range of 5 miles. The drone was to take off and land vertically but y horizontally for better efficiency. UPLOAD was able to successfully design a working control system, unfortunately it was unable to y successfully. UPLOAD MK.II will be focusing on improving last year\u27s design using the control systems designed last year will produce a working prototype by May 2017. 120 concepts were combined and reduced into preliminary prototypes of a winglet, testing rig, and landing system. These designs were modeled through CAD and realized through rapid prototyping. Wind tunnel testing was preformed on the winglet to test for increased efficiency, and stress tests have been preformed on the testing rig and the landing gear to ensure safety

    NASA Tech Briefs, February 2001

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    The topics include: 1) Application Briefs; 2) National Design Engineering Show Preview; 3) Marketing Inventions to Increase Income; 4) A Personal-Computer-Based Physiological Training System; 5) Reconfigurable Arrays of Transistors for Evolvable Hardware; 6) Active Tactile Display Device for Reading by a Blind Person; 7) Program Automates Management of IBM VM Computer Systems; 8) System for Monitoring the Environment of a Spacecraft Launch; 9) Measurement of Stresses and Strains in Muscles and Tendons; 10) Optical Measurement of Temperatures in Muscles and Tendons; 11) Small Low-Temperature Thermometer With Nanokelvin Resolution; 12) Heterodyne Interferometer With Phase-Modulated Carrier; 13) Rechargeable Batteries Based on Intercalation in Graphite; 14) Signal Processor for Doppler Measurements in Icing Research; 15) Model Optimizes Drying of Wet Sheets; 16) High-Performance POSS-Modified Polymeric Composites; 17) Model Simulates Semi-Solid Material Processing; 18) Modular Cryogenic Insulation; 19) Passive Venting for Alleviating Helicopter Tail-Boom Loads; 20) Computer Program Predicts Rocket Noise; 21) Process for Polishing Bare Aluminum to High Optical Quality; 22) External Adhesive Pressure-Wall Patch; 23) Java Implementation of Information-Sharing Protocol; 24) Electronic Bulletin Board Publishes Schedules in Real Time; 25) Apparatus Would Extract Water From the Martian Atmosphere; 26) Review of Research on Supercritical vs Subcritical Fluids; 27) Hybrid Regenerative Water-Recycling System; 28) Study of Fusion-Driven Plasma Thruster With Magnetic Nozzle; 29) Liquid/Vapor-Hydrazine Thruster Would Produce Small Impulses; and 30) Thruster Based on Sublimation of Solid Hydrazin

    Teleoperated visual inspection and surveillance with unmanned ground and aerial vehicles,” Int

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    Abstract—This paper introduces our robotic system named UGAV (Unmanned Ground-Air Vehicle) consisting of two semi-autonomous robot platforms, an Unmanned Ground Vehicle (UGV) and an Unmanned Aerial Vehicles (UAV). The paper focuses on three topics of the inspection with the combined UGV and UAV: (A) teleoperated control by means of cell or smart phones with a new concept of automatic configuration of the smart phone based on a RKI-XML description of the vehicles control capabilities, (B) the camera and vision system with the focus to real time feature extraction e.g. for the tracking of the UAV and (C) the architecture and hardware of the UAV

    Mechanical Engineering

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    The book substantially offers the latest progresses about the important topics of the "Mechanical Engineering" to readers. It includes twenty-eight excellent studies prepared using state-of-art methodologies by professional researchers from different countries. The sections in the book comprise of the following titles: power transmission system, manufacturing processes and system analysis, thermo-fluid systems, simulations and computer applications, and new approaches in mechanical engineering education and organization systems

    Aeronautical engineering: A continuing bibliography with indexes (supplement 322)

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    This bibliography lists 719 reports, articles, and other documents introduced into the NASA scientific and technical information system in Oct. 1995. Subject coverage includes: design, construction and testing of aircraft and aircraft engines; aircraft components, equipment, and systems; ground support systems; and theoretical and applied aspects of aerodynamics and general fluid dynamics

    Seventh Annual Workshop on Space Operations Applications and Research (SOAR 1993), volume 2

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    This document contains papers presented at the Space Operations, Applications and Research Symposium (SOAR) Symposium hosted by NASA/Johnson Space Center (JSC) and cosponsored by NASA/JSC and U.S. Air Force Materiel Command. SOAR included NASA and USAF programmatic overviews, plenary session, panel discussions, panel sessions, and exhibits. It invited technical papers in support of U.S. Army, U.S. Navy, Department of Energy, NASA, and USAF programs in the following areas: robotics and telepresence, automation and intelligent systems, human factors, life support, and space maintenance and servicing. SOAR was concerned with Government-sponsored research and development relevant to aerospace operations

    Nonlinear control systems laboratory

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    Aeronautical engineering: A continuing bibliography with indexes (supplement 259)

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    This bibliography lists 774 reports, articles, and other documents introduced into the NASA scientific and technical information system in November, 1990. Subject coverage includes: design, construction and testing of aircraft and aircraft engines; aircraft components, equipment and systems; ground support systems; and theoretical and applied aspects of aerodynamics and general fluid dynamics
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