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2023 IEEE International Conference on robotics and Biomimetics, ROBIO 2023

作者： Shimotori, Haruki Jiang, Ping Ooga, Junichiro Sugahara, Atsushi Ito, Shun Koike, Atsuya Ueda, Ryuichi Chiba Institute of Technology Faculty of Advanced Engineering Department of Advanced Robotics 2-17-1 Tsudanuma Chiba Narashino Japan Toshiba Corporate Manufacturing Engineering Center Shin-Isogo-Cho Isogo-ku Yokohama Japan

ISBN: (纸本)9798350325706

We propose a novel grasp detection method for arbitrary shape objects. This method is applicable to multijoint manipulators with a two-finger hand and an RGB-D hand-eye camera. When a robot tries to grasp an unknown object with a camera as the only sensor, it must choose a position to grasp without mass distribution information. Moreover, even if the robot can find some candidates of locations for grasping, some of them will be false due to noise. The proposed method chooses an appropriate candidate by variational Bayesian clustering. In the clustering, the candidates are classified based on their closeness. Then the method chooses one existing at the center of the largest cluster since it may be uninfluenced by noise. This set of procedures does not require training unlike learning methods. The proposed method is evaluated with an actual robot. Though the method is a heuristic, it can choose suitable grasping locations from piles of objects. © 2023 IEEE.

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Controllability Analysis and Stabilization of Untethered Tumbler Floating ROV

Controllability Analysis and Stabilization of Untethered Tum...

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IEEE International Conference on robotics and Biomimetics

作者： Junda Huang Haiwen Wu Hanwen Cao Jianshu Zhou Yunhui Liu The Department of Mechanical and Automation Engineering T Stone Robotics Institute The Chinese University of Hong Kong Hong Kong Center for Logistics Robotics (HKCLR)

Floating ROVs have extensive applications on oceanographic research, environmental monitoring, and search and rescue operations. In this work, two levels of floating ROV stabilization is realized. First, the intrinsic stability is induced by the design of center of mass and moment of inertia based on the stability analysis, such that the ROV can always keep its upwards standing configuration. Besides, an underactuated control method for this novel untethered tumbler floating (TF) ROV is introduced for stabilization, which effectively enhances the stabilization efficiency based on the attitude controller. The model considering rigid body dynamics based on Euler equations, and nonlinear controllability with one, two, or three torques are analyzed serving for the moment of inertia design and underactuated controller. Simulation experiments are conducted to validate the efficacy of our approach, and the results demonstrate its effectiveness for stabilizing the TF-ROV.

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Application of Passive Dynamic Walking Model to Gait Trajectory Estimation Using Inertial Measurement Units and LiDAR

Application of Passive Dynamic Walking Model to Gait Traject...

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2025 IEEE/SICE International Symposium on System Integration, SII 2025

作者： Kasai, Haruki Irie, Kiyoshi Yamazaki, Kimitoshi Shinshu University Graduate School of Science and Technology Japan Chiba Institute of Technology Future Robotics Technology Center Tsudanuma 2-17-1 Chiba Narashino Japan Shinshu University Faculty of Engineering Wakasato 4-17-1 Nagano Nagano Japan

ISBN: (纸本)9798331531614

This paper presents a method for accurately estimating gait trajectory. We have developed an approach that leverages observations from two inertial motion units (IMUs) attached to both insteps and light detection and ranging (LiDAR) mounted on the back. A key advantage of this method is that it does not require observing the person from a fixed point. However, there is potential to further improve the accuracy of the estimated gait trajectory, particularly because the geometry of the gait has been somewhat distorted. In this study, we introduce a passive dynamic walking (PDW) model to preserve gait geometry and detail the formulation for integrating it into the existing method. Additionally, we present a method to address trajectory discontinuities using the PDW model. The effectiveness of the method is explained based on the experimental results using real data. © 2025 IEEE.

关键词： Trajectories

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Keep it Simple: Understanding Natural Language Commands for General-Purpose Service Robots

Keep it Simple: Understanding Natural Language Commands for ...

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IEEE/SICE International Symposium on System Integration

作者： Stephany Ortuno-Chanelo Luis Contreras Jesús Savage Hiroyuki Okada Biorobotics Laboratory School of Engineering National Autonomous University of Mexico Advance Intelligence and Robotics Research Center Tamagawa University

Service robots are designed to perform useful tasks for humans, which involve managing and combining a variety of skills in the form of global and local plans to solve any given task. In this work, we propose a framework to process natural language commands for general-purpose service robots where the robot should perform an arbitrary spoken command requested by a non-expert operator. Our system uses a Natural Language Processing (NLP) parser and a Conceptual Dependency (CD) builder to create CD structures that an expert system can employ to generate a global plan that the robot will execute. An extra simplification step using Large Language Models (LLM) was tested and evaluated in order to improve the accuracy of the system. Finally, our system has been tested in challenging environments in robot competitions and we have achieved promising results.

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Contactless Interaction System Based on Facial Expression Recognition for Humanoid Piano Robot

Contactless Interaction System Based on Facial Expression Re...

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2022 IEEE International Conference on robotics and Biomimetics, ROBIO 2022

作者： Zhong, Ling Wang, Wen Zhu, Shiqiang Ji, Shanshan Zha, Changhai Wan, Minhong Gu, Jason Research Center for Intelligent Robotics Zhejiang Engineering Research Center for Intelligent Robotics Research Institute of Interdisciplinary Innovation Zhejiang Lab Hangzhou311100 China Dalhousie University Department of Electrical and Computer Engineering HalifaxNSB3H 4R2 Canada

ISBN: (纸本)9781665481090

With the wide application of service robots in people's daily life, people are not only satisfied with robots accomplishing tasks independently but also hope that robots can maintain sustainable interaction with human beings. Especially in the field of music, robots need to be equipped with intelligent cognitive skills in decision-making, so that the audience can enjoy immersive appreciation and emotional resonance in the robots performance. Visual perception and natural language understanding are essential for robots to establish human-robot friendly relationships. To enrich the interactive ability of music robots, we design a contactless interaction system based on facial expression recognition, which consists of four modules: voice wake-up, face detection, facial expression recognition, and music mapping. When people wake up the music robot with specific words, the robot will customize appropriate music to perform according to the recognition results of the FER module. As a final step, the interaction system has been successfully applied to the piano humanoid robot independently developed by our team. © 2022 IEEE.

关键词： Decision making

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An Improved Method for Identifying SSVEP Single-Channel Target Frequency for BCI Systems 3

An Improved Method for Identifying SSVEP Single-Channel Targ...

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3rd International Conference on Emerging Trends in Electrical, Control, and Telecommunication engineering, ETECTE 2024

作者： Wahab, Adeel Khan, Umar Shahbaz Nawaz, Tahir Akbar, Hassan Shah, Syed Tayyab Hussain Khan, Zulfiqar Hasan Department of Mechatronics Engg National University of Sciences and Technology IslamabadH-12 Pakistan National Centre of Robotics and Automation National University of Sciences and Technology IslamabadH-12 Pakistan Department of Basic Sciences and Humanities National University of Sciences and Technology IslamabadH-12 Pakistan Faculty of Electrical Engineering Ghulam Ishaq Khan Institute of Engineering Sciences and Technology Topi Pakistan

ISBN: (纸本)9798331504861

Steady-state visual evoked potential (SSVEP) is a brain response to flickering visual stimuli in the occipital area. SSVEP detection methods usually utilize multichannel configurations, which can be intricate and uncomfortable. Conversely, single-channel configurations are simple and user-friendly, but attaining the necessary accuracy is difficult, requiring the development of a reliable and accurate single-channel technique. For this purpose, this study introduces a hybrid VMD-LGBM approach to single-channel SSVEP detection. The proposed technique utilizes VMD as a preprocessor that decomposes the SSVEP signal into harmonic, intrinsic mode functions (IMFs), and noisy IMFs. To separate harmonic IMFs from noisy IMFs, the crest factor of the cross-correlation function was introduced. Then the restored SSVEP signal is used to extract features using power spectral density analysis (Welch's approach), followed by classification using a Light Gradient Boosting Machine. Our proposed approach performs better than available techniques in terms of classification accuracy and information transfer rate. The proposed single-channel approach provides better efficiency and user-friendliness for practical applications. ©2024 IEEE.

关键词： Harmonic analysis

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Design and Verification of a Projectile Structure for Main-belt Comets Penetration Exploration

Design and Verification of a Projectile Structure for Main-b...

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2022 IEEE International Conference on robotics and Biomimetics, ROBIO 2022

作者： Tang, Junyue Liang, He Chi, Cheng Xiao, Junxiao Lu, Zixiao Yao, Ziyun Ha, Zekun Jiang, Shengyuan Harbin Institute of Technology State Key Laboratory of Robotics and System Harbin China CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing100190 China

ISBN: (纸本)9781665481090

Comparing the isotopic composition of the D/H ratio of the water ice in Main-belt Comets (MBCs) to that of the oceans on the Earth can enhance the understanding of where the water comes from and of how the distribution of the water ices in our early solar system. Herein, a jet penetrator with a turbo-blasting explosion device and a high-precision accelerometer has been proposed to realize a 1m class subsurface detection for China next asteroidal exploration mission. Considering the ruggedness of rubble pile structure in the low-gravity environment, the projectile's posture and its overloads determined by its structure and velocity during the penetration is highly uncertain. By establishing the rubble pile structure penetrating mechanism model, the real-time overloads and posture is analyzed to acquire an optimized projectile structure. Finally, a frozen rubble pile simulant penetrating experiment under gas gun system verified the optimized structure. © 2022 IEEE.

关键词： Comets

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Towards Robo-Coach: Robot Interactive Stiffness/Position Adaptation for Human Strength and Conditioning Training

Towards Robo-Coach: Robot Interactive Stiffness/Position Ada...

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IEEE International Conference on robotics and Automation (ICRA)

作者： Chenzui Li Xi Wu Tao Teng Sylvain Calinon Fei Chen Department of Mechanical and Automation Engineering T-Stone Robotics Institute The Chinese University of Hong Kong Hong Kong Hong Kong Center for Logistics Robotics Hong Kong Idiap Research Institute Martigny Switzerland

ISBN: (数字)9798350384574

ISBN: (纸本)9798350384581

Traditional strength and conditioning training relies on the utilization of free weights, such as weighted implements, to elicit external stimuli. However, this approach poses a significant challenge when attempting to modify or adjust the loads within a single training set. This paper introduces an innovative method for achieving adjustable loads during resistance training by leveraging physical Human-Robot Interaction (pHRI). The primary objective is to regulate targeted muscle activation through the use of Robo-Coach (robotic coach system). We first utilize a Task-Parameterized Gaussian Mixture Model (TP-GMM) to learn the motion of coach demonstration, which can be generalized for the trainees. The 3D path extracted from the generated trajectory is then projected onto a 2D plane with respect to the direction of the load. Furthermore, we propose a hybrid stiffness/position generator for online task execution. This generator determines the desired positions in the 2D plane according to the contact point displacements in the stimuli direction and, simultaneously, sets the desired stiffness based on the muscle activation feedback. Finally, the Robo-Coach is implemented with a variable impedance controller to achieve load-adjustable resistance training with the trainee. The biceps curl exercises were conducted and the results showed favorable performance, indicating the effectiveness of this approach.

关键词： Training Three-dimensional displays Human-robot interaction Muscles Generators Trajectory Impedance

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Squid-inspired and wirelessly controllable display for active camouflage in aquatic-environment

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npj Flexible Electronics 2024年第1期8卷 900-909页

作者： Doyoung Kim Seung Won Seon Minkyung Shin Jihwan Kim Bogeun Kim Janghoon Joo Sang Uk Park Wooseok Kim Hee Kyu Lee Byeong Woon Lee Se Gi Lee Su Eon Lee Ji-Hun Seo Seung Ho Han Bong Hoon Kim Sang Min Won Department of Electrical and Computer Engineering Sungkyunkwan University2066Seobu-roJangan-guSuwon 16419Republic of Korea Department of Smart Wearable Engineering Soongsil UniversitySeoul 06978Republic of Korea Electronic Convergence Materials and Devices Research Center Korea Electronics Technology Institute(KETI)Seongnam 13509Republic of Korea Department of Materials Science and Engineering Korea UniversitySeoul 02841Republic of Korea Department of Robotics and Mechatronics Engineering DGISTDaegu 42988Republic of Korea

Achieving optimal camouflage in an aquatic environment necessitates the ability to modulate transmittance in response to the surrounding obscurity and potential *** adaptation involves a dynamic transition from transparency to a deep-blue color,especially in low-light or dark *** a strategy promotes a seamless assimilation with the surroundings,enabling the absorption of searchlights and,subsequently,diminishing the risk of detection by ***,the presence of sophisticated mechanisms that facilitates stable and efficient control of transmittance is imperative,enabling smooth transition between transparent and deep-blue hues within the aquatic *** study presents nature-inspired programmable camouflage system that integrates an electrochromic display as the primary transmittance change element and a wireless base module for power and data *** technology offers a robust and flexible construction,ensuring stable operation as demonstrated through mechanical-fatigue experiments and quantitative simulation.A custom circuit and a power-control software package enable active control of multiple electrochromic displays while submerged in water.

关键词： transparency submerged lights

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Sub-Optimal Decentralized Navigation of Multiple Holonomic Agents in Simply-Connected Workspaces

Sub-Optimal Decentralized Navigation of Multiple Holonomic A...

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IEEE Conference on Decision and Control

作者： Dimitrios Kotsinis Charalampos P. Bechlioulis Department of Electrical and Computer Engineering Athena Research Center Robotics Institute Maroussi Greece University of Patras Greece

ISBN: (数字)9798350316339

ISBN: (纸本)9798350316346

In this paper, we propose a sub-optimal approach for the multi-agent navigation problem in simply-connected workspaces. We design a decentralized control law exhibiting the following three properties: (1) navigation of each agent with the optimal policy towards its destination, (2) avoidance of collision with other nearby agents and the workspace boundary, and (3) knowledge about the current position and not the destination of nearby agents. Moreover, we refer to the sub-optimal approach because the computational complexity and time needed to calculate the global optimal solution become unrealistic as the number of agents increases. In our case, each agent has a predetermined optimal policy calculated by a novel off-policy iterative method, to go towards its destination and it deviates from it in order to avoid collisions. The purpose of the simulation study is to examine how much the sub-optimal greedy trajectory of each agent deviates from the optimal one.

关键词： Navigation Decentralized control Vectors Trajectory Iterative methods Computational complexity Game theory Multi-agent systems

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