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Even though mobile robots have been around for decades, trajectory optimization and continuous time collision avoidance remain subject of active research. Existing methods trade off between path quality, computational complexity, and…

机器人学 · 计算机科学 2020-03-03 Tobias Schoels , Luigi Palmieri , Kai O. Arras , Moritz Diehl

Continuum robots are typically slender and flexible with infinite freedoms in theory, which poses a challenge for their control and application. The shape sensing of continuum robots is vital to realise accuracy control. This letter…

机器人学 · 计算机科学 2021-03-10 Hao Cheng , Hongji Shang , Bin Lan , Houde Liu , Xueqian Wang , Bin Liang

This paper presents a safety-critical locomotion control framework for quadrupedal robots. Our goal is to enable quadrupedal robots to safely navigate in cluttered environments. To tackle this, we introduce exponential Discrete Control…

机器人学 · 计算机科学 2023-08-10 Qiayuan Liao , Zhongyu Li , Akshay Thirugnanam , Jun Zeng , Koushil Sreenath

Continuum robots offer high flexibility and multiple degrees of freedom, making them ideal for navigating narrow lumens. However, accurately modeling their behavior under large deformations and frequent environmental contacts remains…

机器人学 · 计算机科学 2025-03-11 Hao Chen , Jian Chen , Xinran Liu , Zihui Zhang , Yuanrui Huang , Zhongkai Zhang , Hongbin Liu

Fast feedback control and safety guarantees are essential in modern robotics. We present an approach that achieves both by combining novel robust model predictive control (MPC) with function approximation via (deep) neural networks (NNs).…

机器人学 · 计算机科学 2020-03-04 Julian Nubert , Johannes Köhler , Vincent Berenz , Frank Allgöwer , Sebastian Trimpe

We present a novel method, called NeuralUDF, for reconstructing surfaces with arbitrary topologies from 2D images via volume rendering. Recent advances in neural rendering based reconstruction have achieved compelling results. However,…

计算机视觉与模式识别 · 计算机科学 2022-11-28 Xiaoxiao Long , Cheng Lin , Lingjie Liu , Yuan Liu , Peng Wang , Christian Theobalt , Taku Komura , Wenping Wang

Signed Distance Fields (SDFs) are a fundamental representation in robot motion planning. Their configuration-space counterpart, the Configuration Space Distance Field (CDF), directly encodes distances in joint space, offering a unified…

机器人学 · 计算机科学 2025-09-18 Mengzhu Li , Yunyu Zhou , He Ying , F. Richard Yu

Continuum robots, which often rely on interdisciplinary and multimedia collaborations, have been increasingly recognized for their potential to revolutionize the field of human-computer interaction (HCI) in varied applications due to their…

机器人学 · 计算机科学 2024-10-08 Po-Yu Hsieh , June-Hao Hou

We consider nonconvex obstacle avoidance where a robot described by nonlinear dynamics and a nonconvex shape has to avoid nonconvex obstacles. Obstacle avoidance is a fundamental problem in robotics and well studied in control. However,…

机器人学 · 计算机科学 2025-04-15 Paul Lutkus , Michelle S. Chong , Lars Lindemann

In the field of computer vision, the numerical encoding of 3D surfaces is crucial. It is classical to represent surfaces with their Signed Distance Functions (SDFs) or Unsigned Distance Functions (UDFs). For tasks like representation…

计算机视觉与模式识别 · 计算机科学 2024-05-07 Virgile Foy , Fabrice Gamboa , Reda Chhaibi

Obstacle avoidance is central to safe navigation, especially for robots with arbitrary and nonconvex geometries operating in cluttered environments. Existing Control Barrier Function (CBF) approaches often rely on analytic clearance…

机器人学 · 计算机科学 2025-09-22 Shuo Liu , Zhe Huang , Calin A. Belta

Ensuring safety and robustness of robot skills is becoming crucial as robots are required to perform increasingly complex and dynamic tasks. The former is essential when performing tasks in cluttered environments, while the latter is…

机器人学 · 计算机科学 2025-04-29 Ken-Joel Simmoteit , Philipp Schillinger , Leonel Rozo

In this paper, we present a decentralized control approach based on a Nonlinear Model Predictive Control (NMPC) method that employs barrier certificates for safe navigation of multiple nonholonomic wheeled mobile robots in unknown…

机器人学 · 计算机科学 2022-08-18 Amir Salimi Lafmejani , Spring Berman , Georgios Fainekos

Thanks to recent advancements in accelerating non-linear model predictive control (NMPC), it is now feasible to deploy whole-body NMPC at real-time rates for humanoid robots. However, enforcing inequality constraints in real time for such…

机器人学 · 计算机科学 2024-10-23 Charles Khazoom , Seungwoo Hong , Matthew Chignoli , Elijah Stanger-Jones , Sangbae Kim

As autonomous systems become increasingly prevalent in daily life, ensuring their safety is paramount. Control Barrier Functions (CBFs) have emerged as an effective tool for guaranteeing safety; however, manually designing them for specific…

机器人学 · 计算机科学 2025-04-16 Shreenabh Agrawal , Manan Tayal , Aditya Singh , Shishir Kolathaya

Bio-inspired robotic systems are capable of adaptive learning, scalable control, and efficient information processing. Enabling real-time decision-making for such systems is critical to respond to dynamic changes in the environment. We…

机器人学 · 计算机科学 2024-07-17 Dimitrios Chatziparaschis , Shan Zhong , Vasileios Christopoulos , Konstantinos Karydis

Ensuring safe navigation in complex environments requires accurate real-time traversability assessment and understanding of environmental interactions relative to the robot`s capabilities. Traditional methods, which assume simplified…

机器人学 · 计算机科学 2025-04-30 Pascal Roth , Jonas Frey , Cesar Cadena , Marco Hutter

Many applications in robotics require primitive spherical geometry, especially in cases where efficient distance queries are necessary. Manual creation of spherical models is time-consuming and prone to errors. This paper presents Foam, a…

机器人学 · 计算机科学 2025-03-19 Sai Coumar , Gilbert Chang , Nihar Kodkani , Zachary Kingston

Endowing continuum robots with compliance while it is interacting with the internal environment of the human body is essential to prevent damage to the robot and the surrounding tissues. Compared with passive compliance, active compliance…

机器人学 · 计算机科学 2024-01-30 David Jakes , Zongyuan Ge , Liao Wu

Accurate and dense mapping in large-scale environments is essential for various robot applications. Recently, implicit neural signed distance fields (SDFs) have shown promising advances in this task. However, most existing approaches employ…

机器人学 · 计算机科学 2024-04-30 Shuangfu Song , Junqiao Zhao , Kai Huang , Jiaye Lin , Chen Ye , Tiantian Feng