Results 21 to 30 of about 10,064,891 (293)

Relative positioning control of flexible structure for precise positioning stage

Mechanical Engineering Journal, 2020
Precise positioning technologies are widely used in industrial machines such as device manufacturing equipment. Many studies have been done on feedback control systems for precise positioning stages that improve accuracy by using sensor signal feedback ...
Hironori OGAWA, Yukinori KOBAYASHI, Takanori EMARU   +2 more
doaj   +1 more source

Differential responses of soil C, N, and P ecological stoichiometric characteristics to different configurations of edge-locked forests in the Kubuqi Desert

Frontiers in Plant Science
As a vital component of the desert ecological protection system, the edge-locked forests of the Kubuqi Desert play a crucial role in mitigating wind erosion, stabilizing sand, maintaining soil and water, and restricting desert expansion.
Xue Chen, Hejun Zuo, Hejun Zuo, Min Yan, Min Yan, Haibing Wang, Haibing Wang, Cheng Xi, Yinchao Chai   +8 more
doaj   +1 more source

Magnetic-head positioning control of HDDs with improved H∞ controller by Robust Controller Bode (RCBode) plot

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2018
In this paper, we present a robust controller design method for a magnetic-head positioning system in a hard disk drive (HDD) based on the H∞ control theory and the Robust Controller Bode (RCBode) plot.
Jun ITO, Takenori ATSUMI
doaj   +1 more source

Development of an Innovative Magnetorheological Gearbox for Positioning Control and Anti-Disturbance of a Robotic Arm

Machines
The robotic arm is a critical component of modern industrial manufacturing. However, its positioning performance can be hindered by overshooting and oscillation.
Yuyang Zhang, Shuaishuai Sun, Lei Deng, Guorui Wang, Rui Yu, Weihua Li, Xinglong Gong, Shiwu Zhang, Haiping Du, Jian Yang   +9 more
doaj   +1 more source

Synchronization Control of Dynamic Positioning Ships Using Model Predictive Control

Journal of Marine Science and Engineering, 2021
Underway replenishment is essential for ships performing long-term missions at sea, which can be formulated into the problem of leader-tracking configuration. Not only the position and orientation but also the velocities are required to be controlled for
Cheng Liu, Ting Sun, Qizhi Hu
doaj   +1 more source

Distributed control of positive systems [PDF]

IEEE Conference on Decision and Control and European Control Conference, 2011
A system is called positive if the set of non-negative states is left invariant by the dynamics. Stability analysis and controller optimization are greatly simplified for such systems. For example, linear Lyapunov functions and storage functions can be used instead of quadratic ones.
openaire   +3 more sources

Ship Dynamic Positioning Control Based on Active Disturbance Rejection Control

Journal of Marine Science and Engineering, 2022
Nowadays, Dynamic Positioning (DP) is applied to various tasks such as subsea pipeline laying and the requirements for the positioning performance in marine operations are higher and higher.
Hongliang Li, Hao Chen, Ning Gao, Nadia AΪT-Ahmed, Jean-Frederic Charpentier, Mohamed Benbouzid   +5 more
doaj   +1 more source

Positioning in Chinese digital television network using TDS-OFDM signals

, 2011
Due to wide coverage and high transmission power of digital television (DTV) transmitters, DTV-based wireless positioning is a promising complementary to global positioning system.
Dai, Linglong, Chen, Sheng, Wang, Zhaocheng, Pan, Changyong   +3 more
core   +2 more sources

A Model-Free Adaptive Positioning Control Method for Underactuated Unmanned Surface Vessels in Unknown Ocean Currents

Journal of Marine Science and Engineering
Aiming to address the problem of underactuated unmanned surface vehicles (USVs) performing fixed-point operations at sea without dynamic positioning control systems, this paper introduces an original approach to positioning control: the virtual anchor ...
Zihe Qin, Feng Zhang, Wenlin Xu, Yu Chen, Jinyu Lei   +4 more
doaj   +1 more source

Research on Positioning Control Strategy for a Hydraulic Support Pushing System Based on Iterative Learning

Actuators, 2023
At present, the positioning control of the hydraulic support pushing systems in fully mechanized mining faces uses an electrohydraulic directional valve as the control component, while the current research mainly focuses on servo valves, proportional ...
Tengyan Hou, Ziming Kou, Juan Wu, Tianyi Jin, Kaiyuan Su, Binghua Du   +5 more
doaj   +1 more source