Search Results - "Lehner, Peter"

Monoliths as multiphase reactors: A review by Roy, Shaibal, Bauer, Tobias, Al-Dahhan, Muthanna, Lehner, Peter, Turek, Thomas

“…Monolith reactors are being studied as a replacement for conventional multiphase reactors such as trickle‐bed reactors, slurry reactors, and slurry bubble…”
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A Laser-Induced Breakdown Spectroscopy (LIBS) Instrument for In-Situ Exploration with the DLR Lightweight Rover Unit (LRU) by Schröder, Susanne, Seel, Fabian, Dietz, Enrico, Frohmann, Sven, Hansen, Peder Bagge, Lehner, Peter, Fonseca Prince, Andre, Sakagami, Ryo, Vodermayer, Bernhard, Wedler, Armin, Börner, Anko, Hübers, Heinz-Wilhelm

“…In the framework of the Helmholtz ARCHES project, a multitude of robots, including rovers and drones, were prepared for the autonomous exploration of a test…”
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Repetition sampling for efficiently planning similar constrained manipulation tasks by Lehner, Peter, Albu-Schaffer, Alin

“…We present repetition sampling, a new adaptive strategy for sampling based planning, which extracts information from previous solutions to focus the search for…”
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DynACof: A process-based model to study growth, yield and ecosystem services of coffee agroforestry systems by Vezy, Rémi, le Maire, Guerric, Christina, Mathias, Georgiou, Selena, Imbach, Pablo, Hidalgo, Hugo G., Alfaro, Eric J., Blitz-Frayret, Céline, Charbonnier, Fabien, Lehner, Peter, Loustau, Denis, Roupsard, Olivier

“…The DynACof model was designed to model coffee agroforestry systems and study the trade-offs to e.g. optimize the system facing climate changes. The model…”
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Increased light‐use efficiency sustains net primary productivity of shaded coffee plants in agroforestry system by Charbonnier, Fabien, Roupsard, Olivier, Maire, Guerric, Guillemot, Joannès, Casanoves, Fernando, Lacointe, André, Vaast, Philippe, Allinne, Clémentine, Audebert, Louise, Cambou, Aurélie, Clément‐Vidal, Anne, Defrenet, Elsa, Duursma, Remko A., Jarri, Laura, Jourdan, Christophe, Khac, Emmanuelle, Leandro, Patricia, Medlyn, Belinda E., Saint‐André, Laurent, Thaler, Philippe, Van Den Meersche, Karel, Barquero Aguilar, Alejandra, Lehner, Peter, Dreyer, Erwin

“…In agroforestry systems, shade trees strongly affect the physiology of the undergrown crop. However, a major paradigm is that the reduction in absorbed…”
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The Repetition Roadmap for Repetitive Constrained Motion Planning by Lehner, Peter, Albu-Schaffer, Alin

“…We present the Repetition Roadmap, a motion planner that effectively exploits the repetitiveness of a set of tasks with small variations to efficiently compute…”
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Effects of the gas/solids distributor on the local and overall solids distribution in a downer reactor by Lehner, Peter, Wirth, Karl-Ernst

“…In the last few years, the downer has been proposed as a new reactor for gas/solids reactions. Compared to state‐of‐the‐art riser reactors, the cocurrent…”
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German Aerospace Center's advanced robotic technology for future lunar scientific missions by Wedler, Armin, Schuster, Martin J, Müller, Marcus G, Vodermayer, Bernhard, Meyer, Lukas, Giubilato, Riccardo, Vayugundla, Mallikarjuna, Smisek, Michal, Dömel, Andreas, Steidle, Florian, Lehner, Peter, Schröder, Susanne, Staudinger, Emanuel, Foing, Bernard, Reill, Josef

“…The Earth's moon is currently an object of interest of many space agencies for unmanned robotic missions within this decade. Besides future prospects for…”
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Towards Autonomous Planetary Exploration: The Lightweight Rover Unit (LRU), its Success in the SpaceBotCamp Challenge, and Beyond by Schuster, Martin J., Brunner, Sebastian G., Bussmann, Kristin, Büttner, Stefan, Dömel, Andreas, Hellerer, Matthias, Lehner, Hannah, Lehner, Peter, Porges, Oliver, Reill, Josef, Riedel, Sebastian, Vayugundla, Mallikarjuna, Vodermayer, Bernhard, Bodenmüller, Tim, Brand, Christoph, Friedl, Werner, Grixa, Iris, Hirschmüller, Heiko, Kaßecker, Michael, Márton, Zoltán-Csaba, Nissler, Christian, Ruess, Felix, Suppa, Michael, Wedler, Armin

“…Planetary exploration poses many challenges for a robot system: From weight and size constraints to extraterrestrial environment conditions, which constrain…”
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The ARCHES Space-Analogue Demonstration Mission: Towards Heterogeneous Teams of Autonomous Robots for Collaborative Scientific Sampling in Planetary Exploration by Schuster, Martin J., Muller, Marcus G., Brunner, Sebastian G., Lehner, Hannah, Lehner, Peter, Sakagami, Ryo, Domel, Andreas, Meyer, Lukas, Vodermayer, Bernhard, Giubilato, Riccardo, Vayugundla, Mallikarjuna, Reill, Josef, Steidle, Florian, von Bargen, Ingo, Bussmann, Kristin, Belder, Rico, Lutz, Philipp, Sturzl, Wolfgang, Smisek, Michal, Maier, Moritz, Stoneman, Samantha, Prince, Andre Fonseca, Rebele, Bernhard, Durner, Maximilian, Staudinger, Emanuel, Zhang, Siwei, Pohlmann, Robert, Bischoff, Esther, Braun, Christian, Schroder, Susanne, Dietz, Enrico, Frohmann, Sven, Borner, Anko, Hubers, Heinz-Wilhelm, Foing, Bernard, Triebel, Rudolph, Albu-Schaffer, Alin O., Wedler, Armin

“…Teams of mobile robots will play a crucial role in future missions to explore the surfaces of extraterrestrial bodies. Setting up infrastructure and taking…”
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A Laser-Induced Breakdown Spectroscopy by Schröder, Susanne, Seel, Fabian, Dietz, Enrico, Frohmann, Sven, Hansen, Peder Bagge, Lehner, Peter, Fonseca Prince, Andre, Sakagami, Ryo, Vodermayer, Bernhard, Wedler, Armin, Börner, Anko, Hübers, Heinz-Wilhelm

“…In the framework of the Helmholtz ARCHES project, a multitude of robots, including rovers and drones, were prepared for the autonomous exploration of a test…”
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Concurrent starch accumulation in stump and high fruit production in coffee (Coffea arabica) by Cambou, Aurélie, Thaler, Philippe, Clément-Vidal, Anne, Barthès, Bernard G, Charbonnier, Fabien, Van den Meersche, Karel, Aguilar Vega, Maria E, Avelino, Jacques, Davrieux, Fabrice, Labouisse, Jean-Pierre, de Melo Virginio Filho, Elias, Deleporte, Philippe, Brunet, Didier, Lehner, Peter, Roupsard, Olivier

“…Abstract In coffee, fruit production on a given shoot drops after some years of high yield, triggering pruning to induce resprouting. The timing of pruning is…”
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Mobile manipulation for planetary exploration by Lehner, Peter, Brunner, Sebastian, Domel, Andreas, Gmeiner, Heinrich, Riedel, Sebastian, Vodermayer, Bernhard, Wedler, Armin

“…Robotic systems map unknown terrain and collect scientific relevant data of foreign planets. Currently, pilots from Earth steer these rovers on Moon and Mars…”
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Effect of phase maldistribution on performance of two‐phase catalytic monolith reactor and its comparison with trickle bed reactor by Roy, Shaibal, Kamalanathan, Premkumar, Lehner, Peter, Turek, Thomas, Al‐Dahhan, Muthanna

“…Monolith reactors are widely considered as an alternative to the conventional trickle bed reactor. For the commercial deployment of monolith reactors,…”
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Hybrid Motion Planner for a Multi-Armed Robot Performing On-orbit Loco-manipulation Tasks by Rodriguez, Ismael, Quintero, Sergio, Lutze, Jean-Pascal, Lehner, Peter, Roa, Maximo A.

“…Large space infrastructure is gaining increasing attention in recent years, including e.g. solar power plants in space or space stations. However, these…”
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Collaborative Multi-Rover Crater Exploration: Concept and Results from the ARCHES Analog Mission by Burkhard, Lukas, Sakagami, Ryo, Lakatos, Kristin, Gmeiner, Heinrich, Lehner, Peter, Reill, Josef, Muller, Marcus G., Durner, Maximilian, Wedler, Armin

“…Access to extreme terrain, like caves or craters, is a key challenge for future planetary exploration robots. Many experimental robotic systems either use…”
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Hybrid Planning to Minimize Platform Disturbances during In-orbit Assembly Tasks by Rodriguez, Ismael, Lutze, Jean-Pascal, Mishra, Hrishik, Lehner, Peter, Roa, Maximo A.

“…In-orbit space assembly has been proposed as a method to overcome the obstacles for deployment of large spatial structures. To make such assemblies…”
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Feasibility Checking and Constraint Refinement for Shared Control in Assistive Robotics by Bustamante, Samuel, Rodriguez, Ismael, Quere, Gabriel, Lehner, Peter, Iskandar, Maged, Leidner, Daniel, Domel, Andreas, Albu-Schaffer, Alin, Vogel, Jorn, Stulp, Freek

“…Shared control enables users with motor impairments to control high-dimensional assistive robots with low-dimensional user interfaces. The challenge is to…”
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A Tree-Based World Model for Reducing System Complexity in Autonomous Mobile Manipulation by Sakagami, Ryo, Domel, Andreas, Lehner, Peter, Riedel, Sebastian, Brunner, Sebastian G., Albu-Schaffer, Alin, Stulp, Freek

“…Mobile manipulation tasks in unstructured environments remain challenging for autonomous robots. The need to employ a diverse set of software and hardware…”
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CollisionGP: Gaussian Process-Based Collision Checking for Robot Motion Planning by Munoz, Javier, Lehner, Peter, Moreno, Luis E., Albu-Schaffer, Alin, Roa, Maximo A.

“…Collision checking is the primitive operation of motion planning that consumes most time. Machine learning algorithms have proven to accelerate collision…”
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