Results 51 to 60 of about 2,522,038 (310)

Efficient real-time trajectory tracking [PDF]

open access: yesThe VLDB Journal, 2011
Moving objects databases (MOD) manage trajectory information of vehicles, animals, and other mobile objects. A crucial problem is how to efficiently track an object's trajectory in real-time, in particular if the trajectory data is sensed at the mobile object and thus has to be communicated over a wireless network.
Ralph Lange, Frank Dürr, Kurt Rothermel
openaire   +1 more source

Trajectory Tracking Control for Wheeled Mobile Robots with Unknown Slip Rates Based on Improved Rapid Variable Exponential Reaching Law and Sliding Mode Observer

open access: yesMachines
Aiming at the trajectory tracking control problem of wheeled mobile robots under unknown slip ratio conditions, this paper designs a trajectory tracking controller based on an improved rapid variable power reaching law and a sliding mode observer. First,
Zexu Li   +5 more
doaj   +1 more source

Design of Joint Controller for Welding Robot and Parameter Optimization

open access: yesChemical Engineering Transactions, 2017
Joint control is the basis for welding robot to complete task space trajectory tracking, and the precision of joint control is directly related to the motion performance and precision of the robot. For the coherent and non- linear dynamic characteristics
Chengxiang Li
doaj   +1 more source

Optimal design and trajectory tracking experiment of a novel 3-DOF parallel antenna mechanism

open access: yesAIP Advances, 2022
The tracking range and pointing performance of the antenna are important indices to measure the antenna system. First, the 3 degree of freedom parallel mechanism is proposed for the supporting mechanism of the antenna.
Guoxing Zhang   +5 more
doaj   +1 more source

Trajectory Tracking Control Method Based on Adaptive Higher Order Sliding Mode

open access: yesApplied Sciences, 2022
To resolve the problem of high-precision trajectory tracking control under interference conditions in a missile’s mid-guidance phase, according to the constructed nominal trajectory, an improved adaptive high-order sliding mode trajectory tracking ...
Jingang He   +5 more
doaj   +1 more source

Design and Simulation of Intelligent Vehicle Trajectory Tracking Control Algorithm Based on LQR and PID

open access: yesTaiyuan Ligong Daxue xuebao, 2022
In order to improve the accuracy and robustness of intelligent vehicle trajectory tracking, a longitudinal and lateral control strategy based on linear quadratic regulator (LQR) and proportional-integral-derivative (PID) algorithm was proposed.
Mingze XU, Qinghe LIU
doaj   +1 more source

GPS-Based Human Tracking Methods for Outdoor Robots [PDF]

open access: yes한국정밀공학회지, 2018
This paper presents a GPS-based method for outdoor robots to track humans. This new method can overcome the crucial problems of conventional techniques in complex environments with obstacles or sloped terrain that do not allow detecting the locations of ...
Woo Seok Lee, In Ho Cho, Jong Hwan Lim
doaj   +1 more source

A New Trajectory Tracking Control Method for Fully Electrically Driven Quadruped Robot

open access: yesMachines, 2022
To improve the accuracy of tracking the trunk center-of-mass (CoM) trajectory and foot-end trajectory in a fully electrically driven quadruped robot, an efficient and practical new trajectory tracking control method is designed.
Yulong You   +8 more
doaj   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

open access: yesFEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

The Prediction of Badminton Flight Trajectory Based on an Intelligent Compensator

open access: yesIEEE Access, 2023
A real-time visual servo badminton trajectory tracking system (VSBTTS) is proposed in this study. VSBTTS is composed of two parts: the image unit and the tracking operation unit. The primary function of the image unit is to segment the moving shuttlecock
Chih-Hui Chiu   +2 more
doaj   +1 more source

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