Sökning: "kostas"

Visar resultat 11 - 15 av 23 avhandlingar innehållade ordet kostas.

1. 11. Control and coordination of mobile multi-agent systems

   Författare :Tove Gustavi; Xiaoming Hu; Kostas J. Kyriakopoulos; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mobile robotics; tracking; obstacle avoidance; formation control; nonlinear observers; multi-agent coordination; connectivity graphs.; Optimization; systems theory; Optimeringslära; systemteori;

   Sammanfattning : In this thesis, various control problems originating from the field of mobile robotics are considered. In particular, the thesis deals with problems that are related to the interaction and coordination of multiple mobile units. The scientific contributions are presented in five papers that together constitute the main part of the thesis. LÄS MER

3. 12. Robot Manipulation Planning Among Obstacles: Grasping, Placing and Rearranging

   Författare :Joshua Alexander Haustein; Danica Kragic; Kostas E. Bekris; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; robot manipulation planning; sampling-based planning; fingertip grasp planning; placement planning; rearrangement planning; Computer Science; Datalogi;

   Sammanfattning : This thesis presents planning algorithms for three different robot manipulation tasks: fingertip grasping, object placing and rearranging. Herein, we place special attention on addressing these tasks in the presence of obstacles. LÄS MER

4. 13. Cooperative and Interaction Control for Underwater Robotic Vehicles

   Författare :Shahab Heshmati-Alamdari; Kostas J. Kyriakopoulos; National Technical University of Athens School of Mechanical Engineering Control Systems Lab; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Marine robotics; Robotics; Underwater Vehicle Manipulator Systems; Cooperative manipulations; Visual servoing; Nonlinear Model Predictive Control; Autonomous Underwater Vehicles; Industrial Information and Control Systems; Industriella informations- och styrsystem; Vehicle and Maritime Engineering; Farkostteknik;

   Sammanfattning : In this dissertation we address the problem of robust control for underwater robotic vehicles under resource constraints and inspired by practical applications in the field of marine robotics. By the term “resource constraints” we refer to systems with constraints on communication, sensing and energy resources. LÄS MER

5. 14. Thin metal films on weakly-interacting substrates : Nanoscale growth dynamics, stress generation, and morphology manipulation

   Författare :Andreas Jamnig; Kostas Sarakinos; Gregory Abadias; Gregory Thompson; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Thin films; magnetron sputter-deposition; in situ and real-time characterization; early film growth stages; residual stress; manipulation of morphology; Couches minces; pulvérisation magnétron; caractérisation in situ en temps réel; premiers stades de croissance; contraintes résiduelles; manipulation de morphologie;

   Sammanfattning : Vapor-based growth of thin metal films with controlled morphology on weakly-interacting substrates (WIS), including oxides and van der Waals materials, is essential for the fabrication of multifunctional metal contacts in a wide array of optoelectronic devices. Achieving this entails a great challenge, since weak film/substrate interactions yield a pronounced and uncontrolled 3D morphology. LÄS MER

7. 15. Dynamics of the Early Stages in Metal-on-Insulator Thin Film Deposition

   Författare :Bo Lü; Kostas Sarakinos; Peter Münger; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Thin films consist of nanoscale layers of material that are used in many technological applications to either functionalize a surface or serve as parts in miniaturized devices. The properties of a film are closely related to its microstructure, which in turn can be tuned during film preparation. LÄS MER