Results 21 to 30 of about 15,765 (228)

H∞ Loop Shaping Robust Control For Tractor-semitrailer

MATEC Web of Conferences, 2015
The tractor-semitrailer model is general described and analyzed in road reference coordinate system. The lateral error of look-ahead distance has been chosen as nominal plant and a robust controller using H∞ loop-shaping procedure is designed which can ...
Chang Sheng, Chen Ling-ling, Wu Jin-feng, Zou Nai-wei   +3 more
doaj   +1 more source

The benefit of complete trip information in free-floating carsharing systems

EURO Journal on Transportation and Logistics, 2023
Free-floating and instant-access carsharing systems are two features of the most flexible carsharing systems. In the former, users are allowed to freely park the car in any legal parking spot within the boundaries defined by the service operator.
Claudia Archetti, Maurizio Bruglieri, Gianfranco Guastaroba, M. Grazia Speranza   +3 more
doaj   +1 more source

Look-Ahead Distance of a fiber probe used to assist neurosurgery: Phantom and Monte Carlo study

Optics Express, 2003
A short-separation, optical reflectance probe has been developed to assist the neurosurgeon in functional neurosurgery for accurate localization of the surgical target. Because of the scattering nature of tissue, the optical probe has a "Look Ahead Distance" (LAD), at which the measured optical reflectance starts to "see" or "sense" the underlying ...
Zhiyu, Qian, Sundar, Victor, Yueqing, Gu, Cole, Giller, Hanli, Liu   +4 more
openaire   +2 more sources

USV and AUV Cooperative Control Strategy Based on Nonlinear Disturbance Observer

Shanghai Jiaotong Daxue xuebao, 2023
Facing the three-dimensional, diverse, and complex underwater detection task, this paper proposed an unmanned surface vehicle-autonomous underwater vehicle (USV-AUV) cross-domain heterogeneous cooperative control strategy based on the leader-follower ...
YU Te, LIU Jiapeng, WU Chao, ZHOU Chang, ZHOU Shengzeng, WANG Lei
doaj   +1 more source

Optimization and Analysis of Sensitive Areas for Look-Ahead Electromagnetic Logging-While-Drilling Based on Geometric Factors

Energies
Look-ahead electromagnetic (EM) logging-while-drilling (LWD) plays an indispensable role in the prediction of deep and ultra-deep reservoirs. Traditional electromagnetic logging-while-drilling (EMLWD) and ultra-deep EMLWD technologies exhibit certain ...
Guoyu Li, Zhenguan Wu, Xiaoqiao Liao, Xizhou Yue, Xiang Zhang, Tianlin Liu, Yunxin Zeng   +6 more
doaj   +1 more source

Research on Path Tracking Technology for Tracked Unmanned Vehicles Based on DDPG-PP

Machines
Realizing path tracking is crucial for improving the accuracy and efficiency of unmanned vehicle operations. In this paper, a path tracking hierarchical control method based on DDPG-PP is proposed to improve the path tracking accuracy of tracked unmanned
Yongjuan Zhao, Chaozhe Guo, Jiangyong Mi, Lijin Wang, Haidi Wang, Hailong Zhang   +5 more
doaj   +1 more source

Multistep Prediction Analysis of Pure Pursuit Method for Automated Guided Vehicles in Aircraft Industry

Actuators
The pure pursuit (PP) method has been widely employed in automated guided vehicles (AGVs) to address path tracking challenges. However, the traditional pure pursuit method exhibits certain limitations in tracking performance.
Biling Wang, Gaojian Fan, Xinming Zhang, Liangjie Gao, Xiaobo Wang, Weijie Fu   +5 more
doaj   +1 more source

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

Advanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice, Krzysztof S. Stopka, Michael D. Sangid   +2 more
wiley   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Path Tracking Control of Agricultural Automatic Navigation Vehicles Based on an Improved Sparrow Search-Pure Pursuit Algorithm

Agriculture
A pure pursuit method based on an improved sparrow search algorithm is proposed to address low path-tracking accuracy of intelligent agricultural machinery in complex farmland environments.
Junhao Wen, Liwen Yao, Jiawei Zhou, Zidong Yang, Lijun Xu, Lijian Yao   +5 more
doaj   +1 more source