1–20 of 25 hits
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    Airfoil–Vortex Interaction Noise Control Mechanism Based on Active Flap Control

    Hu, Zhiyuan / Xu, Guohua / Shi, Yongjie et al. | ASCE | 2021

    Blade-vortex interaction (BVI) noise is a significant source of rotor noise. In recent years, active flap control

     ...

    Source Mechanisms and Control Methods for Aerodynamic Noise

    Liu, Yu / Geyer, Thomas F. / Lu, Zhenbo | ASCE | 2021

    Additively Manufactured Sound-Absorbing Porous Structures for Airfoil Trailing-Edge Noise Control

    Jiang, Chaoyang / Moreau, Danielle / Fischer, Jeoffrey et al. | ASCE | 2021
    trailing-edge noise control. ...

    Numerical Study of Flow and Noise Control Mechanism of Shape-Optimized Series Cylinder

    Wu, Yongxi / Ji, Guangnian / Zhang, Peizhi et al. | ASCE | 2024

    The study addresses the critical issue of noise generation attributed to airflow around cylinders and its

     ...

    Passive Control of Vortex Shedding Noise of Circular Cylinders by Passive Air-Jet Blowing

    Al-Sadawi, L. / Biedermann, T. M. / Fritsche, M. | ASCE | 2021

    Passive air-jet blowing is an effective yet simple technique to control flow-induced noise due to vortex shedding

     ...

    Experimental Study of Far-Field Aerodynamic Noise Characteristics of Serrated Slat

    Liu, Yuan / Liu, Peiqing / Guo, Hao et al. | ASCE | 2023

    High-lift airfoil slat and passive control noise were studied experimentally. A serrated slat with different

     ...
    Keywords: Aeroacoustic noise , Passive control

    Toward a Low Noise Shock Tunnel Facility via Multiobjective Optimization of Hypersonic Nozzle

    Malekipour, S. / Mohammadi-Amin, M. / Bahman-Jahromi, I. et al. | ASCE | 2021

    In this paper, a systematic approach is considered for the development of a low noise shock tunnel facility. For

     ...

    Parametric Effect of Blade Surface Blowing on the Reduction of Rotor Blade–Vortex Interaction Noise

    Sun, Yan / Xu, Guohua / Shi, Yongjie | ASCE | 2021
    slot locations are examined to study the effects of jet slot location on the control of BVI noise. Additionally, the parametric effects of jet ...

    Analyzing Interaction Noise from a Small Contra-Rotating Fan Enclosed with Lined and Unlined Casings

    Dong, Bin / Yang, Dangguo / Wang, Chunqi et al. | ASCE | 2021
    of interaction noise as well as provide an essential reference for devising noise control methods for ducted CR fans. ...

    Robust Flight Control Design Using Sensor-Based Backstepping Control for Unmanned Aerial Vehicles

    Cao, Lijia / Hu, Xiaoxiang / Zhang, Shengxiu et al. | ASCE | 2017

    The sensor-based backstepping control law, which is not sensitive to model uncertainty, uses less model knowledge

     ...

    A Case for Feedback Control to Prevent Delay

    Ossenbruggen, Paul J. | ASCE | 2020
    driver behavior and traffic noise. Second, the focus is on preventing traffic breakdown and queuing. State-space modeling and feedback control ...

    Active Vibration Control of Time-Varying Structural Systems with a Logic FxLMS Algorithm

    Zheng, Hongbo / Yang, Dequan / Zhang, Zhiyi | ASCE | 2020

    The filtered-x least mean square (FxLMS) algorithm has been widely used in active noise and vibration control of

     ...

    Trajectory Tracking Control of Autonomous Quadrotor Helicopter Using Robust Neural Adaptive Backstepping Approach

    Mohd Basri, Mohd Ariffanan | ASCE | 2017

    This paper presents the design and analysis of a robust neural adaptive backstepping control (RNABC) for an

     ...

    Adaptive Control of Shock Waves with a Passively Morphing Layer for Rotating Blades

    Shi, Junxiang / Xu, Tiancheng / Schafer, Steven R. et al. | ASCE | 2013
    . Transonic shock takes place along the advancing side, which decreases the performance of the blades and results in impulsive noise. Adaptive ...

    Command Governor for Constrained Attitude Angle Protection of the Wing-in-Ground Effect Craft near Sea Surface

    Wang, Lixin / Yang, Kun / Liu, Hailiang et al. | ASCE | 2022
    . A set-membership state estimator is also employed to address the unmeasured disturbances and noise. The command governor design for pitch ...
    Keywords: Predictive control

    Intelligent Vibration Isolation and Mitigation of a Platform by Using MR and VE Devices

    Xu, Zhao-Dong / Xu, Fei-Hong / Chen, Xi | ASCE | 2016
    important research topic. However, previous studies only address high-frequency excitations; they disregard the control effect of low-frequency ...

    Comparison of Numerical Differentiation Techniques for Aircraft Identification

    Brunot, Mathieu | ASCE | 2019

    External disturbance and measurement noise during flight tests inevitably degrade the identification of the

     ...

    Mini Quadrotor UAV: Design and Experiment

    Capello, Elisa / Scola, Alessandro / Guglieri, Giorgio et al. | ASCE | 2012
    characteristics, and the low-pass filter integrated in control law, combined with a Kalman filter, can reduce noise and correlate data between different ...

    Twist Suppression Method of Tethered Towing for Spinning Space Debris

    Meng, Zhongjie / Wang, Bingheng / Huang, Panfeng | ASCE | 2017
    is shown that without tension control, towing removal is challenging for the system owing to the twist potential and large tension induced ...

    Improved LQG Method for Active Gust Load Alleviation

    Liu, Xiang / Sun, Qin | ASCE | 2017
    suitable for application in structure/control design optimization. This new technique differs from the traditional LQG methodology by the ...