61–80 von 326 Ergebnissen
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    Control System Design for a Ducted-Fan Unmanned Aerial Vehicle Using Linear Quadratic Tracker

    Freier Zugriff
    Junho Jeong / Seungkeun Kim / Jinyoung Suk | DOAJ | 2015
    order to reduce the steady-state errors, a linear quadratic tracker with integrator (LQTI) is designed to add an integral term of tracking state ...

    Asymmetric Barrier Lyapunov Function-Based Wheel Slip Control for Antilock Braking System

    Freier Zugriff
    Xiaolei Chen / Zhiyong Dai / Hui Lin et al. | DOAJ | 2015
    As an important device of the aircraft landing system, the antilock braking system (ABS) has a function to avoid aircraft wheels self ...

    Cartesian Mesh Linearized Euler Equations Solver for Aeroacoustic Problems around Full Aircraft

    Freier Zugriff
    Yuma Fukushima / Daisuke Sasaki / Kazuhiro Nakahashi | DOAJ | 2015
    complex geometry. Taking advantage of the benefits of Cartesian mesh, we employ high-order schemes for spatial derivatives and for time ...

    Ligament and Droplet Generation by Oil Film on a Rotating Disk

    Freier Zugriff
    Hengchao Sun / Guoding Chen / Li’na Wang et al. | DOAJ | 2015
    The lubrication and heat transfer designs of bearing chamber depend on an understanding of oil/air two-phase flow. As initial and boundary ...

    Adaptive Integrated Guidance and Fault Tolerant Control Using Backstepping and Sliding Mode

    Freier Zugriff
    Mohsen Fathi Jegarkandi / Asghar Ashrafifar / Reza Mohsenipour | DOAJ | 2015
    A new method of integrated guidance and control for homing missiles with actuator fault against manoeuvring targets is proposed. Model of ...

    Equilibrium Positions for UAV Flight by Dynamic Soaring

    Freier Zugriff
    Bingjie Zhu / Zhongxi Hou / Shangqiu Shan et al. | DOAJ | 2015
    Dynamic soaring is a special flying technique designed to allow UAVs (unmanned aerial vehicles) to extract energy from wind gradient field ...

    A Novel Software Simulator Model Based on Active Hybrid Architecture

    Freier Zugriff
    Amr AbdElHamid / Peng Zong | DOAJ | 2015
    The simulated training is an important issue for any type of missions such as aerial, ground, sea, or even space missions. In this paper, a ...

    GPS Based Reduced-Dynamic Orbit Determination for Low Earth Orbiters with Ambiguity Fixing

    Freier Zugriff
    Yang Yang / Xiaokui Yue / Jianping Yuan | DOAJ | 2015
    With the ever-increasing number of satellites in Low Earth Orbit (LEO) for scientific missions, the precise determination of the position ...

    Stress Distribution on Sandwich Structure with Triangular Grid Cores Suffered from Bending Load

    Freier Zugriff
    Cui Xu / Huang Yanjiao / Wang Shou et al. | DOAJ | 2015
    core and composite skins. The mechanical properties of the sandwich structure were investigated by the finite element analysis (FEA) and three ...

    A Comprehensive Probabilistic Framework to Learn Air Data from Surface Pressure Measurements

    Freier Zugriff
    Ankur Srivastava / Andrew J. Meade | DOAJ | 2015
    multidisciplinary nature of this work is general in nature and is potentially applicable to a variety of mechanical and aerospace engineering problems. ...

    An EBSPK-/MPPSK-Modem Based Transceiver for Radar-Communications

    Freier Zugriff
    Yu Yao / Lenan Wu | DOAJ | 2015
    platform or intelligent transportation system to affect the essential tasks of Identification Friend or Foe ...

    Designing Backstepping Control System for Hypersonic Vehicle Based on Feedback Linearization

    Freier Zugriff
    Jianli Wei / Huan Chen | DOAJ | 2015
    cross-coupling effect among its aerodynamic force, thrust, structure, and control. The nonlinearity and uncertainty of the model cause ...

    A Sliding Mode LCO Regulation Strategy for Dual-Parallel Underactuated UAV Systems Using Synthetic Jet Actuators

    Freier Zugriff
    N. Ramos-Pedroza / W. MacKunis / M. Reyhanoglu | DOAJ | 2015
    the control loop. The control law is rigorously proven to achieve asymptotic regulation of both pitching and plunging displacements for a ...

    Approximate State Transition Matrix and Secular Orbit Model

    Freier Zugriff
    M. P. Ramachandran | DOAJ | 2015
    The state transition matrix (STM) is a part of the onboard orbit determination system. It is used to control the satellite’s orbital motion ...

    A Reconstruction Algorithm for Blade Surface Based on Less Measured Points

    Freier Zugriff
    Jia Liu / Ji Zhao / Xu Yang et al. | DOAJ | 2015
    A reconstruction algorithm for blade surface from less measured points of section curves is given based on B-spline surface interpolation ...

    A Multifaceted Investigation and Intervention into the Process of Flight Clearance for UAS Experimental Flight Test

    Millar, Richard C. | SAE Technical Papers | 2015
    expectations. The research reported here investigated the difficulties and advocates solutions devised through the application of systems engineering ...
    Verlag: Society of Automotive Engineers , SAE International
    Schlagwörter: Systems engineering

    Ionospheric Delay Handling for Relative Navigation by Carrier-Phase Differential GPS

    Freier Zugriff
    A. Renga / U. Tancredi / M. Grassi | DOAJ | 2015
    ionosphere-free approach is proposed, in which the differential ionospheric delays are cancelled out by combination of dual frequency GPS ...

    Research on Aircraft Attack Angle Control Considering Servo-Loop Dynamics

    Freier Zugriff
    Xiaodong Liu / Yan Wang / Wanwei Huang et al. | DOAJ | 2015
    servo-loop dynamics. A second-order linear model of electromechanical servo loop is considered in the modeling and design processes. With regard ...

    Collaborative Deformation Design Using Control Integrated Analysis Methods for Hypersonic Waverider

    Freier Zugriff
    Yanbin Liu / Yuping Lu | DOAJ | 2015
    the control-oriented idea. Finally, a simulation example is used to verify the effectiveness of the proposed methods for the hypersonic ...

    Robust Predictive Functional Control for Flight Vehicles Based on Nonlinear Disturbance Observer

    Freier Zugriff
    Yinhui Zhang / Huabo Yang / Zhenyu Jiang et al. | DOAJ | 2015
    dynamics of the flight vehicle are transformed into linear-like state-space equations with state-dependent coefficient matrices. And then the ...