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Maximilian Selmair

Maximilian Selmair
Tesla Manufacutring Brandenburg SE

Master of Arts
I ❤️ modelling & simulation

About

17
Publications
6,189
Reads
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33
Citations
Introduction
I have been investigating optimisation techniques for scheduling an online AMR system for pickup and delivery with stochastic transportation requests revealed sequentially over a rolling horizon. My daily methodology was to use process simulation (DES and agent-based) for my research.
Additional affiliations
September 2017 - May 2021
BMW Group
Position
  • PhD student on AMR Systems
Description
  • This thesis investigates optimisation techniques for scheduling an online autonomous mobile robot system for pickup and delivery with stochastic transportation requests revealed sequentially over a rolling horizon. In contrast to further research, the focus belays in a large-scale specification with a high traffic density, i.e. 100 robots in an assembly hall with 50,000 m². The aim of this study is to develop interoperable scheduling modules for an optimal overall performance of an AMR system.
October 2014 - September 2016
SimPlan AG
Position
  • Consultant
Education
September 2017 - December 2021
University of Plymouth
Field of study
  • PhD Student
July 2014 - August 2017
Technische Universität Dresden
Field of study
  • PhD Student
March 2013 - July 2014

Publications

Publications (17)
Conference Paper
Full-text available
Uncertainty, as a constant companion of our world, is one major reason why simulation modelling takes precedence over static calculations to achieve accurate predictions. Computational random number generators are able to algorithmically determine values on the basis of random distributions, which utilise seed values to calculate streams of random...
Article
Full-text available
The allocation of tasks to Autonomous Mobile Robots in a production setting in combination with the most efficient parking and charging processes are the focus of this paper. This study presents a simulative evaluation of the theoretical allocation methods developed in Selmair and Maurer (2020) combined with either hard or dynamic availability rule...
Conference Paper
Full-text available
The optimal allocation of transportation tasks to a fleet of vehicles, especially for large-scale systems of more than 20 Autonomous Mobile Robots (AMRs), remains a major challenge in logistics. Optimal in this context refers to two criteria: how close a result is to the best achievable objective value and the shortest possible computational time....
Article
Full-text available
The optimal allocation of transportation tasks to a fleet of vehicles, especially for large-scale systems of more than 20 Autonomous Mobile Robots (AMRs), remains a major challenge in logistics. Optimal in this context refers to two criteria: how close a result is to the best achievable objective value and the shortest possible computational time....
Preprint
Full-text available
In this paper, our aim was to extend an existing decentralised method for allocating tasks to AGVs, by additionally considering vehicles which already are assigned to a task. This was achieved by also taking into account the opportunity costs arising from a vehicle passing a current task to another vehicle and subsequently accepting a new task. By...
Article
In this paper, we extended an existing decentralised method for allocating tasks to AGVs, by additionally considering vehicles which already are assigned to a task. This was achieved by also taking into account the opportunity costs arising from a vehicle passing a current task to another vehicle and subsequently accepting a new task. This loosened...
Conference Paper
Full-text available
This paper presents our work in progress for the development of an efficient charging & parking strategy. Our research aim is to develop a strategy that not only provides an efficient approach to charging AGV batteries, but also reduces traffic density in a highly utilised large-scale AGV system. Alongside the current state-of-the-art solution, thr...
Conference Paper
Full-text available
The efficient distribution of scarce resources has been a challenge in many different fields of research. This paper focuses on the area of operations research, more specifically, Automated Guided Vehicles intended for pick-up and delivery tasks. In time delivery in general and flexibility in particular are important KPIs for such systems. In order...
Preprint
Full-text available
The efficient distribution of scarce resources has been a challenge in many different fields of research. This paper focuses on the area of operations research, more specifically, Automated Guided Vehicles intended for pickup and delivery tasks. In time delivery in general and flexibility in particular are important KPIs for such systems. In order...
Preprint
Full-text available
The increasing number of robots and autonomous vehicles involved in logistics applications leads to new challenges to face for the community of Artificial Intelligence. Web-shop giants, like Amazon or Alibaba for instance, brought this problem to a new level, with huge warehouses and an huge number of orders to deliver with strict deadlines. Coordi...
Conference Paper
The increasing number of robots and autonomous vehicles involved in logistics applications leads to new challenges to face for the community of Artificial Intelligence. Web-shop giants, like Amazon or Alibaba for instance, brought this problem to a new level, with huge warehouses and an huge number of orders to deliver with strict deadlines. Coordi...
Conference Paper
Full-text available
Scheduling approaches for the charging of Automated Guided Vehicles (AGVs) are based on three key components: the timing of charging processes, the selection of a charging station and the duration of the charging process. Based on literature research introduced in this paper, two scheduling approaches have been studied: a rigid approach, based on s...
Conference Paper
Full-text available
The efficient allocation of tasks to vehicles in a fleet of self-driving vehicles (SDV) becomes challenging for large-scale systems (e. g. more than hundred vehicles). Operations research provides different methods that can be applied to solve such assignment problems. Integer Linear Programming (ILP), the Hungarian Method (HM) or Vogel's Approxima...
Article
Full-text available
Motivated by the increasing share of renewable energy in the markets for energy commodities, this study has evaluated the potential for optimizing production planning by taking into account disposable options for procuring energy, in this case electricity. For this purpose, a material flow simulation study extended by an electricity price simulatio...
Conference Paper
Full-text available
The rising energy prices – particularly over the last decade – pose a new challenge for the manufacturing industry. Reactions to climate change, such as the advancement of renewable energies, raise the expectation of further price increases and variations. Regarding the manufacturing industry, production planning and controlling can have a signific...
Conference Paper
Full-text available
This research paper has evaluated the potential of reducing energy consumption by scheduling jobshop production systems with machines using standby modes in free times. The initial introduction of the planning issue is followed by a description of the approach to assess the available potential. Subsequently, the research procedure by means of simul...
Chapter
Full-text available
This research paper has evaluated the potential of reducing energy consumption by scheduling jobshop production systems with machines using standby modes in free times. The initial introduction of the planning issue is followed by a description of the approach to assess the available potential. Subsequently, the research procedure by means of simul...

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Projects

Projects (2)
Project
Optimising Operations for Fleets of Autonomous Mobile Robots: Strategies for allocating immediate Transportation and Charging Tasks in large-scale Systems