Precision-positioning adaptive controller for swing elimination in three-dimensional overhead cranes with distributed mass beams

2021 ◽  
Author(s):  
Ling Yang ◽  
Huimin Ouyang
Keyword(s):  
Three Dimensional ◽  
Adaptive Controller ◽  
Precision Positioning ◽  
Overhead Cranes

Indoor three-dimensional high-precision positioning system with bat algorithm based on visible light communication

2019 ◽  
Vol 58 (9) ◽  
pp. 2226 ◽  
Author(s):  
Li Huang ◽  
Ping Wang ◽  
Zhongyu Liu ◽  
Xi Nan ◽  
Lingling Jiao ◽  
...  
Keyword(s):  
Visible Light ◽  
High Precision ◽  
Three Dimensional ◽  
Bat Algorithm ◽  
Visible Light Communication ◽  
Positioning System ◽  
Precision Positioning

Passivity-based coupling control for underactuated three-dimensional overhead cranes

2021 ◽  
Author(s):  
Shengzeng Zhang ◽  
Haiyue Zhu ◽  
Xiongxiong He ◽  
Yuanjing Feng ◽  
Chee Khiang Pang
Keyword(s):  
Three Dimensional ◽  
Overhead Cranes

Research on Precise Positioning Technology of Mine Locomotive Unmanned Systems

2013 ◽  
Vol 397-400 ◽  
pp. 1602-1605 ◽  
Author(s):  
Bin Ge ◽  
Shao Xin Zhang
Keyword(s):  
Three Dimensional ◽  
Experimental Results ◽  
New Technique ◽  
Unmanned Systems ◽  
Precision Positioning ◽  
Positioning Accuracy ◽  
Precise Positioning ◽  
Research Programs ◽  
Spatial Coordinates

The research programs and positioning methods of precise positioning technology of the Mine locomotive unmanned systems were discussed in this paper, It implements the positioning of three-dimensional spatial coordinates, and analyses the experiment of positioning calculation and positioning deviation. Experimental results show that the new technique and method can improve precision positioning accuracy above 5%, and provide reliable security protection for the Mine locomotive unmanned systems.

Robust attitude control of the three-dimensional unknown chaotic satellite system

2021 ◽  
pp. 014233122110561
Author(s):  
Muhammad Shafiq ◽  
Israr Ahmad ◽  
O Abdullah Almatroud ◽  
M Mossa Al-Sawalha
Keyword(s):  
Attitude Control ◽  
Closed Loop ◽  
Three Dimensional ◽  
Adaptive Controller ◽  
The State ◽  
Feedback Gain ◽  
State Variables ◽  
Nonlinear Controller ◽  
Model Uncertainties ◽  
Control Effort

This paper proposes a novel continuous-time robust direct adaptive controller for the attitude control of the three-dimensional unknown chaotic spacecraft system. It considers that the plant’s nonlinear terms, exogenous disturbances, and model uncertainties are unknown and bounded; the controller design is independent of the system’s nonlinear terms. These controller attributes flourish the robust performance of the closed-loop and establish smooth state vector convergence to zero. The proposed controller consists of three parts: (1) a linear controller establishes the stability of the closed-loop at the origin, (2) a nonlinear controller component that autonomously adjusts the feedback gain, and (3) a nonlinear adaptive controller compensates for the model uncertainties and external disturbances using the online estimates of bounds and model uncertainties. The output of this part remains within a given upper and lower bound. The feedback controller gain is large when the state variables are away from the origin and become small in the origin’s vicinity. This feature is novel and contributes to the synthesis of smooth control effort that establishes robust fast and oscillation-free convergence of the state variables to zero. The Lyapunov direct stability analysis assures the global asymptotic robust stability of the closed-loop. Computer simulations and comparative analysis are included to verify the theoretical findings.

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