Results 41 to 50 of about 3,284 (194)

Uncertainty, Sensitivity, and Efficiency Analysis of a Hybrid Piezoelectric–Electromagnetic Energy Harvester

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Digitalization and emerging technologies are increasing the demand for wireless sensing and the Internet of Things (IoT), which provide opportunities for autonomous sources of electricity in the form of energy harvesting systems. This paper focuses on the challenges in hybrid piezoelectric‐electromagnetic kinetic energy harvesting systems that
Petr Sosna, Damian Gaska, Zdeněk Hadaš
wiley   +1 more source

A Study on Disrupted Flight Recovery Based on Logic-Based Benders Decomposition Method

Aerospace
Aiming at the disrupted flight recovery problem, this paper established a mixed-integer programming model based on the resource assignment model to minimize the recovery cost.
Yunfang Peng, Xuechun Hu, Beixin Xia
doaj   +1 more source

Approximate Reachability for Feedback Linearizable Systems

Optimal Control Applications and Methods, EarlyView.
The backwards reachable set for a dynamical system is the set of states for which there exists a constraint admissible trajectory that reaches a given terminal set. Conventional grid‐based approaches for computing these sets are intractable for many applications.
Vincent Liu, Chris Manzie, Peter M. Dower   +2 more
wiley   +1 more source

Digital surveillance of animals and nature recovery

People and Nature, EarlyView.
Abstract Digital surveillance technologies (DSTs) are widely applied in nature recovery for their potential to generate novel data on species and ecosystems through digital tracking, automation (e.g. from hazardous locations) and from newly recruited citizen scientists.
William M. Adams
wiley   +1 more source

Progressive Damage and Impact Behavior of Carbon Fiber/Epoxy‐Aluminum 2024‐T3 CARALL Composites: Experimental Investigation and Hybrid Finite Element Modeling Approach

Polymer Composites, EarlyView.
Experimental evaluation and hybrid FE modeling of drop‐weight impact damage behavior in 2/1 CARALL panels: A comparison of experimental and numerical results. ABSTRACT The present work investigates the dynamic response of Carbon Fiber Reinforced Epoxy Reinforced Aluminum 2024‐T3 FML with a 2/1 stacking arrangement subjected to low velocity impacts. Low
Mehmet İskender Özsoy, Ender Can Yakar, Sinan Fidan, Satılmış Ürgün, Mustafa Özgür Bora   +4 more
wiley   +1 more source

Research on Irregular Flight Recovery Based on Air-Rail Spatiotemporal Network Model

IEEE Access
The issue of irregular flight recovery has long been a significant and challenging problem for airlines, necessitating an effective program to develop recovery plans.
Lili Zu, Jingyuan Sun, Zhenlin He, Quan Shao   +3 more
doaj   +1 more source

Developing a Model for Solving the Flight Perturbation Problem

Journal of Airline and Airport Management, 2015
Purpose: In the aviation and airline industry, crew costs are the second largest direct operating cost next to the fuel costs. But unlike the fuel costs, a considerable portion of the crew costs can be saved through optimized utilization of the internal ...
Amirreza Nickkar, Seyedmohammad Seyed-Hosseini, Hassan Javanshir, Hasan Khaksar   +3 more
doaj   +1 more source

Impact of Weak‐Constraint Four‐Dimensional Variational data assimilation on the prediction of a sudden stratospheric warming event in 2024

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The Weak‐Constraint Four‐Dimensional Variational (WC‐4DVAR) system markedly improved the analysis and forecasting of the 2024 sudden stratospheric warming (SSW) event. It reduced biases and enhanced 7–9 day predictions of temperature across the SSW life cycle, with the most pronounced gains for winds also during the critical onset period.
Shaoying Li, Weimin Zhang, Shuo Ma, Bainian Liu, Yanlai Zhao, Xiaoqun Cao   +5 more
wiley   +1 more source

Key node identification and risk propagation of aircraft departure control

四川大学学报. 自然科学版, 2023
The detection of aircraft departure risk is an important part of civil aviation safety production, but the current research focuses mostly on the aircraft movement process and static hazard sources, ignoring the control business impact and risk dynamic ...
KANG Rui, YANG Kai
doaj  

Sliding Mode Control in Aerospace Applications: A Survey

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley   +1 more source