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Impact-aware tasks (i.e. on purpose impacts) are not handled in multi-objective whole body controllers of hu-manoid robots. This leads to the fact that a humanoid robot typically operates at near-zero velocity to interact with the external…

Robotics · Computer Science 2020-05-27 Yuquan Wang , Arnaud Tanguy , Pierre Gergondet , Abderrahmane Kheddar

With the aim of further enabling the exploitation of impacts in robotic manipulation, a control framework is presented that directly tackles the challenges posed by tracking control of robotic manipulators that are tasked to perform…

Robotics · Computer Science 2022-12-05 Jari J. van Steen , Nathan van de Wouw , Alessandro Saccon

With the goal of enabling the exploitation of impacts in robotic manipulation, a new framework is presented for control of robotic manipulators that are tasked to execute nominally simultaneous impacts. In this framework, we employ tracking…

Robotics · Computer Science 2023-08-16 Jari J. van Steen , Nathan van de Wouw , Alessandro Saccon

When legged robots impact their environment executing dynamic motions, they undergo large changes in their velocities in a short amount of time. Measuring and applying feedback to these velocities is challenging, further complicated by…

Robotics · Computer Science 2024-07-12 William Yang , Michael Posa

Intentionally applying impacts while maintaining balance is challenging for legged robots. This study originated from observing experimental data of the humanoid robot HRP-4 intentionally hitting a wall with its right arm while standing on…

Robotics · Computer Science 2023-08-15 Yuquan Wang , Arnaud Tanguy , Abderrahmane Kheddar

With the goal of increasing the speed and efficiency in robotic manipulation, a control approach is presented that aims to utilize intentional simultaneous impacts to its advantage. This approach exploits the concept of the time-invariant…

Robotics · Computer Science 2024-11-18 Jari van Steen , Nathan van de Wouw , Alessandro Saccon

With the aim of further enabling the exploitation of intentional impacts in robotic manipulation, a control framework is presented that directly tackles the challenges posed by tracking control of robotic manipulators that are tasked to…

Robotics · Computer Science 2024-07-02 Jari van Steen , Gijs van den Brandt , Nathan van de Wouw , Jens Kober , Alessandro Saccon

Bidirectional object handover between a human and a robot enables an important functionality skill in robotic human-centered manufacturing or services. The problem in achieving this skill lies in the capacity of any solution to deal with…

Robotics · Computer Science 2022-06-22 Mohamed Djeha , Antonin Dallard , Ahmed Zermane , Pierre Gergondet , Abderrahmane Kheddar

Complex robotic systems require whole-body controllers to deal with contact interactions, handle closed kinematic chains, and track task-space control objectives. However, for many applications, safety-critical controllers are important to…

Robotics · Computer Science 2023-11-16 Victor Paredes , Ayonga Hereid

Task-space quadratic programming (QP) is an elegant approach for controlling robots subject to constraints. Yet, in the case of kinematic-controlled (i.e., high-gains position or velocity) robots, closed-loop QP control scheme can be prone…

Robotics · Computer Science 2023-07-28 Mohamed Djeha , Pierre Gergondet , Abderrahmane Kheddar

Despite the potential benefits of collaborative robots, effective manipulation tasks with quadruped robots remain difficult to realize. In this paper, we propose a hierarchical control system that can handle real-world collaborative…

Robotics · Computer Science 2023-08-01 Mohsen Sombolestan , Quan Nguyen

Impact-aware robotic manipulation benefits from an accurate map from ante-impact to post-impact velocity signals to support, e.g., motion planning and control. This work proposes an approach to generate and experimentally validate such…

Robotics · Computer Science 2024-11-12 Jari van Steen , Daan Stokbroekx , Nathan van de Wouw , Alessandro Saccon

Dynamic motions are a key feature of robotic arms, enabling them to perform tasks quickly and efficiently. Soft continuum manipulators do not currently consider dynamic parameters when operating in task space. This shortcoming makes…

Robotics · Computer Science 2022-10-19 Oliver Fischer , Yasunori Toshimitsu , Amirhossein Kazemipour , Robert K. Katzschmann

Robots built from soft materials will inherently apply lower environmental forces than their rigid counterparts, and therefore may be more suitable in sensitive settings with unintended contact. However, these robots' applied forces result…

Reinforcement learning algorithms have shown great success in solving different problems ranging from playing video games to robotics. However, they struggle to solve delicate robotic problems, especially those involving contact…

Robotics · Computer Science 2020-07-15 Miroslav Bogdanovic , Majid Khadiv , Ludovic Righetti

This study proposes novel control methods that lower impact force by preemptive movement and smoothly transition to conventional contact impedance control. These suggested techniques are for force control-based robots and position/velocity…

Robotics · Computer Science 2023-07-04 Hikaru Arita , Hayato Nakamura , Takuto Fujiki , Kenji Tahara

Projected Inverse Dynamics Control (PIDC) is commonly used in robots subject to contact, especially in quadrupedal systems. Many methods based on such dynamics have been developed for quadrupedal locomotion tasks, and only a few works…

Robotics · Computer Science 2022-10-21 Shengzhi Wang , Xiangyu Chu , K. W. Samuel Au

Despite the fact that robotic platforms can provide both consistent practice and objective assessments of users over the course of their training, there are relatively few instances where physical human robot interaction has been…

Robotics · Computer Science 2019-11-20 Kathleen Fitzsimons , Aleksandra Kalinowska , Julius P. A. Dewald , Todd Murphey

Soft robots manufactured with flexible materials can be highly compliant and adaptive to their surroundings, which facilitates their application in areas such as dexterous manipulation and environmental exploration. This paper aims at…

Systems and Control · Electrical Eng. & Systems 2025-07-01 Renjie Ma , Ziyao Qu , Zhijian Hu , Dong Zhao , Marios M. Polycarpou

Continuum robots are well suited for navigating confined and fragile environments, such as vascular or endoluminal anatomy, where contact with surrounding structures is often unavoidable. While controlled contact can assist motion,…

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