Results 81 to 90 of about 32,908 (301)

Morpho‐functional analyses of the jaw apparatus in the Blue‐and‐yellow Macaw (Ara ararauna, Psittaciformes, Aves): Adaptations to feeding behavior

open access: yesThe Anatomical Record, EarlyView.
Abstract Macaws are renowned for processing dry, mechanically resistant fruits, yet the species‐level anatomical and functional correlates of this performance remain incompletely resolved. We examined the feeding apparatus of the Blue‐and‐yellow Macaw (Ara ararauna) using an integrated approach that combines osteology, myology, and bite‐force estimates
Sérgio R. Posso   +2 more
wiley   +1 more source

Integrated Control With DYC and DSS for 4WID Electric Vehicles

open access: yesIEEE Access, 2019
This paper investigates the front-wheel differential steering system (DSS) for a four-wheel independent-drive (4WID) electric vehicle (EV) with a steer-by-wire (SBW) system in case of the steering failure.
Jie Tian   +4 more
doaj   +1 more source

Practical aspects of modeling aircraft dynamics from flight data [PDF]

open access: yes, 1984
The purpose of parameter estimation, a subset of system identification, is to estimate the coefficients (such as stability and control derivatives) of the aircraft differential equations of motion from sampled measured dynamic responses. In the past, the
Iliff, K. W., Maine, R. E.
core   +1 more source

Adaptive mixing formation control of multiquadrotor unmanned aerial vehicle systems

open access: yesAsian Journal of Control, EarlyView.
Abstract This paper presents a distributed adaptive mixing control (AMC) design for formation maintenance of systems of multiquadrotor UAVs (q‐UAVs) during commanded path‐tracking maneuvers. The proposed formation control scheme has a two‐level structure. The high level defines the desired trajectories for rigid and persistent formation acquisition and
Nasrettin Köksal   +2 more
wiley   +1 more source

On Nonlinear Model Predictive Vehicle Dynamics Control for Multi-Actuated Car-Semitrailer Configurations

open access: yesIEEE Access
Although the literature includes examples of model predictive controllers for trailer sway mitigation through direct yaw moment control in car-semitrailer configurations, the available studies do not consider the integration of direct yaw moment control ...
Gabriele Rini   +5 more
doaj   +1 more source

Oscillatory Adaptive Yaw-Plane Control of Biorobotic Autonomous Underwater Vehicles Using Pectoral-Like Fins

open access: yesApplied Bionics and Biomechanics, 2007
This article considers the control of a biorobotic autonomous underwater vehicle (BAUV) in the yaw plane using biologically inspired oscillatory pectoral-like fins of marine animals.
Mugdha S. Naik, Sahjendra N. Singh
doaj   +1 more source

Aircraft control system [PDF]

open access: yes, 1973
An aircraft control system is described which is particularly suited to rotary wing aircraft. Longitudinal acceleration and course rate commands are derived from a manual control stick to control translational velocity of the aircraft along a flight path.
Koziol, J. S., Jr.   +3 more
core   +1 more source

Fault tolerant control of a quadrotor using L-1 adaptive control [PDF]

open access: yes, 2016
Purpose – The growing use of small unmanned rotorcraft in civilian applications means that safe operation is increasingly important. The purpose of this paper is to investigate the fault tolerant properties to faults in the actuators of an L1 adaptive ...
Cooke, A. K.   +2 more
core   +1 more source

Risk‐aware safe reinforcement learning for control of stochastic linear systems

open access: yesAsian Journal of Control, EarlyView.
Abstract This paper presents a risk‐aware safe reinforcement learning (RL) control design for stochastic discrete‐time linear systems. Rather than using a safety certifier to myopically intervene with the RL controller, a risk‐informed safe controller is also learned besides the RL controller, and the RL and safe controllers are combined together ...
Babak Esmaeili   +2 more
wiley   +1 more source

Lane‐changing control strategy for distributed drive vehicles considering yaw stability

open access: yesIET Intelligent Transport Systems
Intelligent vehicles are prone to dangerous issues such as sideslip and instability when changing lanes to avoid obstacles under some extreme conditions.
Jianjun Hu   +3 more
doaj   +1 more source

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