Results 51 to 60 of about 44,289 (259)

$L^1$-optimality conditions for circular restricted three-body problems

, 2015
In this paper, the L1-minimization for the translational motion of a spacecraft in a circular restricted three-body problem (CRTBP) is considered. Necessary con- ditions are derived by using the Pontryagin Maximum Principle, revealing the existence of ...
Chen, Zheng
core   +3 more sources

Sliding mode and shaped input vibration control of flexible systems [PDF]

, 2008
Copyright [2008] IEEE. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Brunel University's products or services.
Gao, H, Hu, Q, Wang, Z
core   +2 more sources

Noise, Vibration, and Harshness (NVH) Challenges in Hydrogen Internal Combustion Engine Vehicles

Energy Science &Engineering, EarlyView.
ABSTRACT This paper presents a state‐of‐the‐art literature review on noise, vibration, and harshness (NVH) in hydrogen‐fuelled internal combustion engines. Studies published between 2011 and 2025 were screened, covering fundamental flame physics, test‐bench work, and recent prototype vehicles.
Krisztián Horváth
wiley   +1 more source

Terminal sliding mode control strategy design for second-order nonlinear system

, 2012
This study mainly focuses on the terminal sliding mode control (TSMC) strategy design, including an adaptive terminal sliding mode control (ATSMC) and an exact-estimator-based terminal sliding mode control (ETSMC) for second-order nonlinear dynamical ...
Khoo, Suiyang, Lai, Kwei-Yuan, Lee, Jeng-Dao   +2 more
core   +1 more source

High‐Fidelity Simulation‐Driven Control Framework for Robust Grid Integration of Renewable Energy Systems

Energy Science &Engineering, EarlyView.
This work proposes a high‐fidelity, simulation‐driven control framework for robust grid integration of hybrid PV–wind systems using a modular, hierarchical multi‐loop architecture with adaptive decision logic. The framework coordinates power, DC‐link voltage, and grid currents under fast load and generation changes, enabling safe exploration of extreme
Wulfran Fendzi Mbasso, Ambe Harrison, Idriss Dagal, Pradeep Jangir, Zhe Liu, Aseel Smerat   +5 more
wiley   +1 more source

Digital Sliding Mode Control via a Novel Reaching Law and Application in Shipborne Electro-Optical Systems

IEEE Access, 2019
The alignment accuracy and stability of shipborne electro-optical system are affected by external attitude disturbance and internal non-linear disturbance.
Jianqiang Zhang, Yongkai Liu, Fengjing Zhang, Shijie Gao, Chengshan Han   +4 more
doaj   +1 more source

Low leak rate poppet-and-seat check valve [PDF]

, 1970
Valve leakage due to contaminant entrapment and chattering is effectively minimized by a metallic poppet-and-seat check valve designed for use in extreme environmental and fluid temperature ...
Whitten, D. E.
core   +1 more source

Simple model of bouncing ball dynamics. Displacement of the limiter assumed as a cubic function of time

, 2012
Nonlinear dynamics of a bouncing ball moving vertically in a gravitational field and colliding with a moving limiter is considered and the Poincare map, describing evolution from an impact to the next impact, is described.
A. Okniński, A. Okniński, A.B. Nordmark, A.C.J. Luo, A.C.J. Luo, A.C.J. Luo, A.F. Filippov, Andrzej Okniński, Bogusław Radziszewski, C. Knudsen, J. Awrejcewicz, J. Awrejcewicz, M. Bernardo di, M. Wiercigroch, S. Giusepponi, S. Giusepponi, S. Lenci, W.J. Stronge   +17 more
core   +1 more source

Trajectory Control of Manipulator Robots With Uncertainties: A Saturated Continuous Integral Sliding Mode Approach

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This study addresses the trajectory tracking control for manipulator robots with uncertainties. The main objective is to ensure that the robot follows a desired trajectory despite the presence of uncertainties/disturbances and considering control input constraints. The approach is developed in the framework of continuous integral sliding modes.
Emanuel Ortiz‐Ortiz, Juan Eduardo Velázquez‐Velázquez, Ramón Silva‐Ortigoza, Rosalba Galván‐Guerra   +3 more
wiley   +1 more source

The switch point algorithm applied to a harvesting problem

Mathematical Biosciences and Engineering
In this paper, we investigate an optimal harvesting problem of a spatially explicit fishery model that was previously analyzed. On the surface, this problem looks innocent, but if parameters are set to where a singular arc occurs, two complex questions ...
Summer Atkins , William W. Hager, Maia Martcheva   +2 more
doaj   +1 more source