Topics 2015

Topics of the ASC conference

“Mastering deep-sea conditions with pressure tolerant control electronics” – by Peter Kampmann (DFKI RIC).

Pressurized housings have been the standard way of getting electronics into deep-sea for many years. Several attempts do exist to get rid of these bulky and expensive coverings for electronics in deep-sea, by realizing pressure-tolerant or hybrid pressure-tolerant setups. This talk gives an overview about the insights made at the Robotics Innovation Center at the German Research Center for Artificial Intelligence.

“Robotics Inspection is coming” – by dr. ir. Theo de Vries (University of Twente)

Robots are rapidly becoming smarter and more interactive and therefor can be applied in more areas than ever before. They will become a key success factor when it comes to applications in maritime, industrial, agricultural or other economic sectors.

One area in which practical applications are nearing is inspection. During this presentation, we will review performance requirements that robots for inspection must meet and subsequently highlight examples of prototype robotic systems that encompass innovative solutions in order to meet these requirements in a maritime context.

“Requirements and current developments on underwater actuators from a robotic research perspective” – by Andre Gerdes (Ground Truth Robotics GmbH, a DFKI spin-off company)

Based on the experience build up in the past years on developing underwater robotic systems, we give an overview about the requirements on robotic actuators that have rised and show the current developments towards deep-sea underwater actuators.

“Benthic Crawler Tramper” – by Johannes Lemburg (Alfred Wegener Institute)

The crawler system Tramper has been developed within the HGF Alliance ROBEX to carry scientific payloads to perform in-situ measurements at the seafloor. Therefore accurate high-resolution positioning of sensors and sampling devices is essential. Its one year long missions to extreme environments in Arctic regions impose requirements of corrosion resistance, energy efficiency and simplicity onto the design that also influence the embodiment design of the electric drives. The talk will highlight the challenges and solutions for long-term deployment of different deep-sea actuators used for biogeochemical studies.

“Underwater Swarm Design and Applications” – Thomas Horstink (Technical University Delft)

Efficient and effective underwater sensing and data collection is still a bottleneck for many companies and research institutes due to the harsh and unpredictable circumstances in rivers, harbors and oceans. Swarms in nature, think of flocking birds or schooling fish, demonstrate that with local communication, groups of individual limited agents can exhibit complex group behaviour. We seek to use these natural models as inspiration to recreate that behaviour with a swarm of simple and small autonomous underwater vehicles. We will present an overview of the development of such a swarm vehicle and elaborate on essential swarming rules in a case simulation. Our research is a first step towards autonomous underwater monitoring covering large areas and with mission times exceeding weeks or months.

“Modeling of an Underwater Dredging Tool – Application of Reduced Order Modeling for design of interacting maritime structures” Jan Peters (Imotec)

Traditionally successful design of maritime applications relies on the experience of the design team combined with physical model testing. However, as physical testing is costly and time-consuming and experience may be unavailable in innovative projects, such an approach leads to significant difficulties during commissioning. With the increasing complexity and interaction of systems in offshore and marine engineering, it is no longer acceptable to detect errors during the commissioning of systems, with the risks of personal injuries, damaging equipment and delays.

By adding a mathematical representation of all related dynamic systems in a model during the design phase valuable insight can be gained and used at an early stage thus saving time, costs and accidents. In order to profit from modeling it should be possible to get a dependable model without extravagant computational effort. Reduced order modeling is a tool Imotec uses in the design of structures and control systems. An extra benefit can be gained by testing the control software on the model. During the Aquatic Solutions conference the experience of Imotec with reduced order modeling is presented, showing the advantages in a design case of an underwater dredging tool.