Results 21 to 30 of about 1,203,505 (306)

Optimal Control of Molecular Motion Expressed Through Quantum Fluid Dynamics [PDF]

open access: yes, 2000
A quantum fluid dynamic control formulation is presented for optimally manipulating atomic and molecular systems. In quantum fluid dynamic the control quantum system is expressed in terms of the probability density and the quantum current. This choice of
A. Assion   +39 more
core   +3 more sources

A guaranteed collision‐free trajectory planning method for autonomous parking

open access: yesIET Intelligent Transport Systems, 2021
Planning a feasible, and safe trajectory is a crucial procedure for autonomous parking which remains to be fully solved. Generally, a trajectory is depicted by a sequence of configurations which include positions, and orientations.
Zhiming Zhang   +6 more
doaj   +1 more source

Age‐optimal path planning for finite‐battery UAV‐assisted data dissemination in IoT networks

open access: yesIET Communications, 2021
Unmanned aerial vehicles have been widely used to assist wireless sensor networks due to ever‐increasing demands for Internet‐of‐things applications. To support timely delivery of information characterised by a recently introduced metric, termed as the ...
Abolfazl Changizi, Mohammad Javad Emadi
doaj   +1 more source

Metaheuristic‐based optimal 3D positioning of UAVs forming aerial mesh network to provide emergency communication services

open access: yesIET Communications, 2021
The optimal placement of unmanned aerial vehicles (UAVs) to facilitate post‐disaster emergency communication services is a paramount research domain. The novelty of the authors’ work is to optimally place available UAVs in 3D space to meet the objectives
Manali Gupta, Shirshu Varma
doaj   +1 more source

Trajectory planning and tracking control of unmanned ground vehicle leading by motion virtual leader on expressway

open access: yesIET Intelligent Transport Systems, 2021
Formation driving can effectively solve the problem of driving efficiency and safety of unmanned ground vehicles (UGVs) on expressways. This study introduces a trajectory planning and tracking control method from initial position to its motion virtual ...
Fugui Cao, Haobin Jiang
doaj   +1 more source

On robust stability of switched homogeneous systems

open access: yesIET Control Theory & Applications, 2021
This paper analyses the robust stability of a class of homogeneous systems where a relation among the high‐order term, the decay rate and the domain of attraction of the system is explicitly established.
Hao Yang   +3 more
doaj   +1 more source

Regional averaging and scaling in relativistic cosmology [PDF]

open access: yes, 2002
Averaged inhomogeneous cosmologies lie at the forefront of interest, since cosmological parameters like the rate of expansion or the mass density are to be considered as volume-averaged quantities and only these can be compared with observations.
Buchert, Thomas, Carfora, Mauro
core   +3 more sources

Gravity compensation and optimal control of actuated multibody system dynamics

open access: yesIET Control Theory & Applications, 2022
This work investigates the gravity compensation topic, from a control perspective. The gravity could be levelled by a compensating mechanical system or in the control law, such as proportional derivative (PD) plus gravity, sliding mode control, or ...
Saeed Rafee Nekoo   +2 more
doaj   +1 more source

The Singularity in Generic Gravitational Collapse Is Spacelike, Local, and Oscillatory [PDF]

open access: yes, 1998
A longstanding conjecture by Belinskii, Khalatnikov, and Lifshitz that the singularity in generic gravitational collapse is spacelike, local, and oscillatory is explored analytically and numerically in spatially inhomogeneous cosmological spacetimes ...
B. K. BERGER   +9 more
core   +2 more sources

Study on six‐phase PMSM control strategy based on improved position sensorless detection technology

open access: yesIET Power Electronics, 2021
The six‐phase motor control system has low torque ripple, low harmonic content, and high reliability; therefore, it is suitable for electric vehicles, aerospace and other applications requiring high power output and reliability.
Hanying Gao   +3 more
doaj   +1 more source

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