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Research on Maneuverability Optimization of Negative Control Excavator

Wenbo Fu, Lijie Zhang, Zhaoliang Meng, Xiaoming Yuan
2022 IEEE Access  
Date of publication xxxx 00, 0000, date of current version xxxx 00, 0000.  ...  Therefore, it is of great significance to carry out research on the maneuverability optimization of NFC excavators.  ...  based on the hybrid electro-hydraulic main valve to optimize the working condition-adaptability and maneuverability of NFC excavator.  ... 
doi:10.1109/access.2022.3174200 fatcat:vkov2wyizvhotou5qqklozhihi

Learning heuristics for determining slurry wall panel lengths

Ren-Jye Dzeng, Nang-Fei Pan
2006 Automation in Construction  
This research proposes an inductive learning model for solving this problem.  ...  Given a new project whose panel lengths need to be determined, the model chooses similar cases from existing cases, based on case-based reasoning, performs an inductive learning, and uses correctness and  ...  Acknowledgement This work is an extension of the research of the Master's thesis of Yi-Shan Ho, who is the former graduate student of the author.  ... 
doi:10.1016/j.autcon.2005.06.003 fatcat:7ity6bhpjvbtjbvzbzuvnjorvi

Mine Sited after Mine Activity: The Brownfields Methodology and Kuzbass Coal Mining Case

Michal Cehlár, Juraj Janočko, Zuzana Šimková, Tomas Pavlik, Maxim Tyulenev, Sergey Zhironkin, Magerram Gasanov
2019 Resources  
The article describes a new tool, the brownfields methodology, which can help to promote the revitalization of old mining areas as a part of their technological modernization and subsoil full extraction  ...  Operating life of a mine lasts from a few years to several decades. Mine closure occurs once the mineral resource is exhausted, or operations are no longer profitable.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/resources8010021 fatcat:nrn2f7pi2ncnpfbnjsgsdyx3d4

Improving design safety of tractor-trailers by upgrading towing couplers

Yu N Stroganov, O Yu Stroganova, O G Ognev
2019 IOP Conference Series: Materials Science and Engineering  
At the same time, a tractor-trailer is a complex and less maneuverable machine in comparison with a single vehicle.  ...  Exceeding the velocity regime, especially in the case of tractor-trailers, leads to a loss of stability during linear motion, on curvilinear sections of the trajectory or in complex traffic conditions.  ...  Performance characteristics of motor-and tractor-trailers, such as maneuverability and trajectory motion stability, are way below those of a single vehicle, which has negative impact on safety and work  ... 
doi:10.1088/1757-899x/632/1/012028 fatcat:bwtbh3d3efhfbpu4smc5hbzrmi

HEAP - The autonomous walking excavator

Dominic Jud, Simon Kerscher, Martin Wermelinger, Edo Jelavic, Pascal Egli, Philipp Leemann, Gabriel Hottiger, Marco Hutter
2021 Automation in Construction  
We have developed an autonomous walking excavator - based one of the most versatile machines found on construction sites - as one way to begin fulfilling this potential.  ...  On top, we also share some development insights and possible future research directions.  ...  However, there has been practical research over decades on automating standard tracked and wheeled excavators for excavation work, as well as relevant research on the automation of smaller hydraulic arms  ... 
doi:10.1016/j.autcon.2021.103783 fatcat:ys7dbon25jeebis5lspavyq53y

PROBLEMS ARISING IN THE DEVELOPMENT OF DEEP QUARRIES AND POSSIBLE WAYS OF THEIR SOLUTION

T.E. Melnikova
2022 Zenodo  
of deep pits, and possible solutions are proposed.  ...  This article presents the mining-geological and hydrogeological features of mineral deposits that significantly affect the efficiency of open-pit mining, as well as the problems that arise in the development  ...  Scientific novelty of research work.  ... 
doi:10.5281/zenodo.6579698 fatcat:khx4sn7aqbhgbfqrseyc4wxcaa

Toward Task Capable Active Matter: Learning to Avoid Clogging in Confined Collectives via Collisions

Kehinde O. Aina, Ram Avinery, Hui-Shun Kuan, Meredith D. Betterton, Michael A. D. Goodisman, Daniel I. Goldman
2022 Frontiers in Physics  
Our robophysical study of an excavating swarm shows that despite the seeming complexity and difficulty of the task, simple learning rules can mitigate or leverage unavoidable features in task capable dense  ...  Robots began excavation with equal probabilities to excavate and without probability modification, clogs and clusters were common.  ...  Studies of such systems are typically the domain of swarm engineering where researchers seek to understand the functional benefits of structure formation.  ... 
doi:10.3389/fphy.2022.735667 fatcat:bg26usyherfu3oldjk445nlhrq

RISK ASSESSMENT OF FEASIBILITY OF ROADHEADERS IN ESTONIAN UNDERGOUND MINING

S SABANOV, O NIKITIN, J-R PASTARUS
2008 Gorûcie slancy  
For selective extraction four variants of different excavation thicknesses, depending on geological conditions, have been proposed.  ...  Thus, about 23% of limestone extracted together with oil shale will be left in the mine for backfilling the excavated areas.  ...  onboard control systems that run the equipment and collect data on the seam.  ... 
doi:10.3176/oil.2008.2s.07 fatcat:rwpukcgaorhvbkwvi32pgsxo4e

Investigation of Excavator Performance Factors in an Open-Pit Mine Using Loading Cycle Time

Samwel Victor Manyele
2017 Engineering  
This study presents the effect of excavator model, loading operation location, shift availability and truck-shovel combination on loading cycle time and productivity of an open-pit mine.  ...  Under fixed tonnage loaded and waste type (33 t of non-acid forming waste rock), it was observed that loading cycle time depends on excavator model, location and truck being loaded.  ...  For simplicity, researchers fix some factors and focus on few factors to make logical results.  ... 
doi:10.4236/eng.2017.97038 fatcat:cdjxx2xpkrftpidwqkv37gr24y

Research on transportation of metallurgical slag of tippers in the conditions of southeast of Ukraine

Borys Sereda, Darya Mukovska
2019 Zenodo  
As a result of research the analysis of tippers of BelAZ-7540 exploitation was conducted on a metallurgical enterprise in the climactic conditions of southeast of Ukraine,.  ...  It was found that the efficiency of the use of tippers, namely the studied change of expense of fuel is contingent on the work of tippers.  ...  trucks, along with excavation excavators [9] .  ... 
doi:10.5281/zenodo.3387511 fatcat:znr33dffbnaofi7cadoaiqov5y

SM-PI Control Strategy of Electric Motor-pump for Pure Electric Construction Machinery

Shengjie Fu, Haoling Ren, Tianliang Lin, Shengyan Zhou, Qihuai Chen, Zhongshen Li
2020 IEEE Access  
Finally, the vector control algorithm based on speed SMC-PI was tested on a hydraulic excavator driven by the electric motor.  ...  A vector control strategy based on speed sliding mode control (SMC) and torque PI control is proposed for CM with the characteristic of drastically changing loads.  ...  Due to the CM load characteristics, research on electric motor-pump control technology has gradually attracted attention.  ... 
doi:10.1109/access.2020.2997517 fatcat:vc6gb22chzcl3oqlthnl6jmcpy

Mapping Indigenous Settlement Topography in the Caribbean Using Drones

Till Sonnemann, Jorge Ulloa Hung, Corinne Hofman
2016 Remote Sensing  
living there, marking out small mounds of which some were later excavated [4] .  ...  Measurement of the topographic changes in a variety of past settlements defines likely zones of habitat, and provides clues on the actual dimensions and density of living space.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs8100791 fatcat:g4ktch7ljjbanppvqtbmz5gakm

Hydrodynamics of Biomimetic Marine Propulsion and Trends in Computational Simulations

M. I. Lamas, C. G. Rodriguez
2020 Journal of Marine Science and Engineering  
Over the last years, many researchers postulated that some fish movements are more efficient and maneuverable than traditional rotary propellers, and the most relevant marine propulsors which mimic fishes  ...  of investigation of computational models.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/jmse8070479 fatcat:cuiqvdwpn5c6xchsmt2wejfq7a

Power Train System Control of Electric Loader Based on Positive Flow System

Qihuai Chen, Shaole Cai, Xiong Li, Tianliang Lin
2022 Applied Sciences  
to optimize the energy efficiency and control performance of the system.  ...  A variable speed control strategy based on the pilot pressure control was put forward.  ...  Liu et al. carried out corresponding research on the control algorithm of the steering system for a pure electric forklift [17] .  ... 
doi:10.3390/app12126032 fatcat:flgmjep6mfbolmzf5cp3ge55ae

An Improved Approach towards Multi-Agent Pursuit–Evasion Game Decision-Making Using Deep Reinforcement Learning

Kaifang Wan, Dingwei Wu, Yiwei Zhai, Bo Li, Xiaoguang Gao, Zijian Hu
2021 Entropy  
By introducing an adversarial attack trick for the agents themselves, uncertainties of the real world are modeled, thereby optimizing robust training.  ...  An online decision technique based on deep reinforcement learning (DRL) was developed in this paper to address the problem of environment sensing and decision-making in pursuit–evasion games.  ...  and the Open Project of Science and Technology on Electronic Information Control Laboratory (Grant No.  ... 
doi:10.3390/e23111433 pmid:34828131 pmcid:PMC8625563 fatcat:pht5mng7x5fz3ijfg46qhppxsy
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