Results 91 to 100 of about 6,933 (263)

The direct yaw-moment control based on adaptive fuzzy LQR for distributed drive electric vehicles

Advances in Mechanical Engineering
This paper introduced a hierarchical control strategy for direct yaw moment (DYC) to enhance the handling and stability of distributed drive electric vehicles (DDEVs) at medium to high speeds. The upper controller entailed a speed-following PI controller
Baohua Wang, Jiacheng Zhang, Yu Zhang, Weilong Wang   +3 more
doaj   +1 more source

PD-Based Iterative Learning Control for the Nonlinear Low-Speed-Jitter Vibration of a Wind Turbine in Yaw Motion

Applied Sciences
Aiming at the nonlinear low-speed-jitter (LSJ) vibration suppression for a yaw system of a megawatt wind turbine, a kinematics mechanism of the yaw system is investigated from the perspective of tribology, and a kinematics model of the yaw system based ...
Tingrui Liu, Zhifeng Nie
doaj   +1 more source

Habitat loss reshuffles ecological and evolutionary interactions in a seed dispersal network

Oikos, EarlyView.
In tropical forests, habitat loss reshapes species composition, favoring generalists and recently emerged lineages while specialists and older evolutionary lineages are lost. However, how changes in species ecological attributes and evolutionary history affect ecological processes is poorly explored.
Fernando César Gonçalves Bonfim, Mauro Galetti, Elaine Rios, Cynthia Oliveira, Milena Gama, Ketlen Bona, Geanne Carla Novais‐ Pereira, Thiago de Castro Ribeiro, Eliana Cazetta   +8 more
wiley   +1 more source

Mechanisms and impacts of future plant invasions: research agendas and management needs under disruptive social‐ecological change scenarios

Oikos, EarlyView.
No‐analogue futures are characteristic of the Anthropocene, but how global change, and societies' responses, will affect plant invasions remains unclear. Conducting research now to address future needs is crucial for guiding invasion management and policy.
Jennifer L. Bufford, Angela J. Brandt, Rowan Sprague, Christopher E. Buddenhagen, Richard P. Duncan, Nichola Harcourt, Philip E. Hulme, Hao Ran Lai, Kate G. McAlpine, Chris McGrannachan, Fiona J. Thomson, Vincent van Uitregt, Duane A. Peltzer   +12 more
wiley   +1 more source

Two Adaptive Sliding Mode Control Algorithms for Vehicle Stability Enhancement

Journal of Advanced Engineering and Computation
This paper discusses two adaptive sliding mode control (ASMC) algorithms for enhancing vehicle stability through direct yaw moment control (DYC). DYC is based on a logic process derived from the understeering and oversteering behavior of a cornering ...
Anh-Tuan Le
doaj   +1 more source

A Review of Advances in Composite Materials, Structural Optimization, and Machine Learning for Wind Turbine Blades: Challenges and Future Perspectives

Polymer Composites, EarlyView.
Overview of the holistic engineering lifecycle and core research pillars for wind turbine blades. ABSTRACT This paper reviews recent advancements across the lifecycle of wind turbine blades, focusing on three interconnected areas: advanced composites, structural optimization, and machine learning (ML) diagnostics. In materials, we highlight progress in
Kemal Hasirci, Denizhan Yavas, Alaeddin Burak Irez   +2 more
wiley   +1 more source

The Analysis of Characteristics of Anti-yaw Damper and High-speed Trains Adaptability

机车电传动, 2018
The characteristics of the anti-yaw damper for high-speed trains in China were studied by means of the test method, including the analysis of dynamic damping and dynamic stiffness parameters.
CHEN Long, DAI Huanyun, GUO Zhaotuan, HUANG Li, WU Jiajia   +4 more
doaj  

Four-Wheel Steering Control for Mining X-by-Wire Chassis Based on AUKF State Estimation

World Electric Vehicle Journal
To address the challenges to driving stability caused by large-curvature steering of wire-controlled mining vehicles in narrow tunnels, a fused four-wheel steering (4WS) control strategy based on real-time estimation of vehicle state parameters is ...
Qiang Ji, Yueqi Bi, Mingrui Hao, Jiaran Li, Long Chen   +4 more
doaj   +1 more source

Design and Development of a Modular Ballistic Pendulum for High‐Impulse Measurement in Contact and Near‐Field Explosive Loading

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT Measuring impulse from explosive charges in contact and near‐field configurations presents practical challenges due to wide variation in impulse magnitude. Ballistic pendula are widely used for impulse measurement, but many existing designs are limited to narrow operating envelopes or are poorly suited to repeated contact testing and tamped ...
R. Alford, R. Hazael, R. Critchley, L. Humphreys   +3 more
wiley   +1 more source

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