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Simulation-Based Optimization of High-Performance Wheel Loading
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för fysik. Komatsu Ltd., Japan. (Digital Physics)
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för fysik. (Digital Physics)ORCID-id: 0000-0002-0787-4988
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för datavetenskap. Karlstad University, Sweden.ORCID-id: 0000-0001-8704-9584
2021 (Engelska)Ingår i: Proceedings of the 38th International Symposium on Automation and Robotics in Construction (ISARC) / [ed] Chen Feng; Thomas Linner; Ioannis Brilakis, Dubai: International Association for Automation and Robotics in Construction (IAARC) , 2021, s. 688-695Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Having smart and autonomous earthmoving in mind, we explore high-performance wheel loading in a simulated environment. This paper introduces a wheel loader simulator that combines contacting 3D multibody dynamics with a hybrid continuum-particle terrain model, supporting realistic digging forces and soil displacements at real-time performance. A total of 270,000 simulations are run with different loading actions, pile slopes, and soil to analyze how they affect the loading performance. The results suggest that the preferred digging actions should preserve and exploit a steep pile slope. High digging speed favors high productivity, while energy-efficient loading requires a lower dig speed. 

Ort, förlag, år, upplaga, sidor
Dubai: International Association for Automation and Robotics in Construction (IAARC) , 2021. s. 688-695
Serie
ISARC Proceedings, ISSN 2413-5844
Nyckelord [en]
Wheel loader, Autonomous, Simulation-Based Optimization, Multibody and soil dynamics
Nationell ämneskategori
Robotik och automation Datavetenskap (datalogi) Teknisk mekanik
Forskningsämne
fysik; datalogi
Identifikatorer
URN: urn:nbn:se:umu:diva-187949DOI: 10.22260/ISARC2021/0093Scopus ID: 2-s2.0-85127564717ISBN: 978-952-69524-1-3 (tryckt)OAI: oai:DiVA.org:umu-187949DiVA, id: diva2:1597689
Konferens
ISARC 2021: 38th International Symposium on Automation and Robotics in Construction, Dubai, United Arab Emirates, November 1-5, 2021
Tillgänglig från: 2021-09-27 Skapad: 2021-09-27 Senast uppdaterad: 2025-02-05Bibliografiskt granskad
Ingår i avhandling
1. High-performance autonomous wheel loading: a computational approach
Öppna denna publikation i ny flik eller fönster >>High-performance autonomous wheel loading: a computational approach
2025 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Alternativ titel[sv]
Högpresterande autonom hjullastning : en beräkningsmetod
Abstract [en]

Smart and autonomous earthmoving equipment enhances energy efficiency,productivity, and safety at construction sites and mines. The innovations provide means to reach high-set sustainability goals and be profitable despite increasing labor shortages. In addition, recent technological breakthroughs in artificial intelligence highlight the potential of superhuman capabilities to further enhance operations. This thesis presents a computational approach to end-to-end optimization of autonomous wheel loaders operating in a dynamic environment. Wheel loaders are mainly used for repeatedly loading material and carrying it to load receivers in quarries and mines. The difficulty lies in that each loading action alters the state of the material pile. The resulting state affects the possible outcomes of the subsequent loading process and, ultimately, the total performance. Thus, the challenge is to achieve both autonomous and high-performance wheel loading over a sequence of tasks. Achieving this requires the ability to predict future outcomes and account for the cumulative effect of loading actions. The thesis constructs a real-time wheel loader simulator, develops world models for sequential loading actions with evolving pile states, formulates the end-to-end optimization problem, and introduces a look-ahead tree search method to solve the problem. These contributions provide insights into utilizing physics-based simulation in combination with machine learning to further improve sustainability in mining and construction.

Ort, förlag, år, upplaga, sidor
Umeå: Umeå University, 2025. s. 31
Nyckelord
Earthmoving, Automation, Wheel loader, Bucket-filling, Multibody and soil dynamics, Realtime simulation, Sim-to-real gap, World modeling, Deep learning, Optimization
Nationell ämneskategori
Datavetenskap (datalogi)
Forskningsämne
datalogi
Identifikatorer
urn:nbn:se:umu:diva-233090 (URN)978-91-8070-567-7 (ISBN)978-91-8070-568-4 (ISBN)
Disputation
2025-01-24, MIT.A.121, Umeå, 09:00 (Engelska)
Opponent
Handledare
Tillgänglig från: 2025-01-07 Skapad: 2024-12-20 Senast uppdaterad: 2025-01-07Bibliografiskt granskad

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