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检索条件"机构=Robotics Engineering Program"

共 643 条记录，以下是131-140 订阅

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A YOLOv7-Based Method for Detecting Buttons in Service Robots during Autonomous Elevator-Taking Tasks

A YOLOv7-Based Method for Detecting Buttons in Service Robot...

引用

2023 International Conference on Advanced robotics and Intelligent Systems, ARIS 2023

作者： Chen, Ming-Hsin Huang, Wei-Hsiang Li, Tzuu-Hseng S. National Cheng Kung University Program on Ai Robotics AiRobots Lab. Tainan Taiwan Ncku AiRobots Lab. Dept. of Electrical Engineering Tainan Taiwan

ISBN: (纸本)9798350302714

This paper presents a novel visual algorithm based on YOLOv7, designed to enhance the robustness of automated elevator-taking service robots in detecting elevator buttons. Traditional solutions for elevator interaction, such as image processing methods, feature selection, or wireless communication protocols, have inherent limitations related to communication security issues and additional equipment costs. In order to overcome these challenges, our method leverages a physical robotic arm and the YOLOv7 object detection neural network to improve the accuracy of elevator button detection and enable effective robot-elevator interaction. To identify elevator buttons, we employ single-stage object detection algorithms along with multiple cameras to capture comprehensive environmental information during experimental trials. By utilizing these techniques, our proposed method ensures the safety and reliability of the automated elevator-taking process for service robots. Experimental results demonstrate the effectiveness of our algorithm in accurately detecting elevator buttons across various testing scenarios. Overall, our method offers a more suitable solution for service robots to autonomously navigate elevators and perform their intended tasks. © 2023 IEEE.

关键词： Elevators

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RoboRover - A Jetson Nano Powered Robot Car for Object Following, Obstacle Avoidance, and Wall Following 14

RoboRover - A Jetson Nano Powered Robot Car for Object Follo...

引用

14th IEEE Annual Ubiquitous Computing, Electronics and Mobile Communication Conference, UEMCON 2023

作者： Huynh, Trinh Walter, James Aveta, Federica University of Michigan Robotics Department Ann ArborMI48109 United States Wentworth Insitute of Technology Electrical and Computer Engineering Program BostonMA02115 United States

ISBN: (纸本)9798350304138

An intelligent and self-sufficient robot is essential across a wide range of fields, including transportation, industry, space exploration, and defense. Mobile robots possess the capability to undertake diverse tasks such as handling materials, aiding in disaster scenarios, conducting patrols, and executing rescue operations. As a result, the development of an autonomous robot that can navigate through both unchanging and ever-changing surroundings has become important. The primary objective of mobile robot navigation revolves around ensuring the seamless and secure traversal of the robot through complex environments, starting from an initial position, and reaching a designated goal position. This paper presents the design and implementation of a Jetson Nano powered robot car which uses local sensors to interact with an unknown environment. Object following, obstacle avoidance, and wall following features are built for the car to navigate to reach its desired destinations. © 2023 IEEE.

关键词： Mobile robots

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Design and Implementation of Decisioning System for Wifi Access Point Installation using Genetic Algorithm

Design and Implementation of Decisioning System for Wifi Acc...

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2022 International Electrical engineering Congress, iEECON 2022

作者： Thitinaruemit, Aphirak Sitjongsataporn, Suchada Prongnuch, Sethakarn Mahanakorn University of Technology Electrical Engineering Graduate Program Faculty of Engineering and Technology Bangkok Thailand Faculty of Engineering and Technology Dept. of Electronic Engineering Bangkok Thailand Suan Sunandha Rajabhat University Faculty of Industrial Technology Dept. of Robotics Engineering Bangkok Thailand

ISBN: (纸本)9781665402064

This paper presents the design and implementation of a WiFi indoor localization system using genetic algorithm. The coverage capability of the wireless access point is an important parameter in the design to estimate the distance from the transmitted and received signals. The main purpose of this work is to find the effective number of wireless access points in the design area by using genetic algorithm. The Received Signal Strength (RSSI) is measured for the signal quality. The test area consists of the multiple classrooms on the same floor inside the building and the conditions are unobstructed and used the line-of-sight for transmitted and received signals. The experimental results by measuring the received signal through a laptop are indicated that RSSI = -35 dBm at a distance of 5 meters is a prominent indicator of signal quality that can be used to search a variety of information from internet inside the classroom. © 2022 IEEE.

关键词： Genetic algorithms

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Optimization of fish-like locomotion using hierarchical reinforcement learning

Optimization of fish-like locomotion using hierarchical rein...

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International Conference on Ubiquitous Robots and Ambient Intelligence (URAI)

作者： Jeonghyeon Wang Jinwhan Kim Robotics Program Ocean Robotics & Intelligence (ORIN) Laboratory Department of Mechanical Engineering KAIST Daejeon Korea

With an interest in advanced marine propulsion systems, much research has been done on mimicking fish-like locomotion using flapping fins. This study aims to optimize the swimming pattern of fish-like locomotion based on hierarchical reinforcement learning. A simplified carangiform fish model is employed and a segmented tail motion is learned by Q-learning to maximize the average forward velocity by flapping the tail fin. The performance of the self-learned swimming pattern is verified and analyzed in terms of the flapping efficiency. The results show that the flapping angle limit of approximately 35 degrees is best in maximizing the forward moving velocity and the hierarchical reinforcement learning approach is effective in providing a reasonable solution for a large-scale problem.

关键词： Learning (artificial intelligence) Learning systems Mathematical model Markov processes Robots Propulsion

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A classification scheme for planar 4r, spherical 4r, and spatial rccc linkages to facilitate computer animation

A classification scheme for planar 4r, spherical 4r, and spa...

引用

ASME 1998 Design engineering Technical Conferences, DETC 1998

作者： Murray, Andrew P. Larochelle, Pierre M. Department of Mechanical and Aerospace Engineering University of Dayton DaytonOH45469-0210 United States Robotics and Spatial Systems Laboratory Mechanical Engineering Program Florida Institute of Technology Melbourne FL32901 United States

ISBN: (纸本)9780791880319

In this paper we develop a complete classification scheme for planar, spherical and spatial four-bar linkages. The goal of this classification is to note all of the subtleties of motion that an arbitrary set of four link lengths can define. A classification should exist only between the mechanisms that exhibit similar ranges of motion at both the input and output. In the planar case, three parameters being identified as either positive, negative, or zero are necessary to completely characterize all possible ranges of motion. In the spherical and spatial cases, four parameters being identified as positive, negative or zero are needed. The result is 27 classifications of planar mechanisms and 81 for spherical and spatial RCCC mechanisms. © 1998 by ASME.

关键词： Spheres

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Deep Reinforcement Learning with Pedestrian Trajectory Prediction Model for Service Robot Navigation in Crowded Environments

Deep Reinforcement Learning with Pedestrian Trajectory Predi...

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2023 International Conference on Advanced robotics and Intelligent Systems, ARIS 2023

作者： Wang, Shih-Hao Wu, Yu-Hsiung Li, Tzuu-Hseng S. National Cheng Kung University Ms Degree Program on Ai Robotics AiRobots Laboratory Tainan Taiwan Ncku AiRobots Laboratory Dept. of Electrical Engineering Tainan Taiwan

ISBN: (纸本)9798350302714

Safety and effectiveness are crucial considerations in the navigation of robots within crowded environments. Previous research in this field has predominantly focused on an omniscient approach, designing environments with exceptional obstacle avoidance capabilities. However, this approach fails to address the constraints imposed by real-world applications' limited field of view. Additionally, constructing a robot with a complete field of view can be prohibitively expensive. To tackle these challenges, this paper presents a novel approach that combines a social spatial-temporal graph convolutional neural network (Social-STGCN) with reinforcement learning (RL) to enhance crowd avoidance navigation. This approach offers a more practical and cost-effective solution. Simulations conducted to evaluate our proposed method demonstrate its effectiveness by achieving higher success rates and lower collision rates compared to existing approaches. These results confirm the efficiency and safety of our algorithm for crowd avoidance navigation. In practical applications, we employ the Intel RealSense L515 camera to capture depth and RGB image data, enabling the utilization of the Deep SORT algorithm for pedestrian tracking and recognition. This facilitates the acquisition of accurate position and speed information. To validate the performance of our system, we conducted robot experiments in real-world scenarios, including indoor corridors and elevator lobbies. The results obtained from these experiments clearly indicate that our proposed system successfully accomplishes navigation tasks with improved safety and effectiveness. In summary, this paper introduces an effective crowd avoidance navigation algorithm. By leveraging the Social-STGCN and RL techniques, our algorithm enables robots to navigate tasks with enhanced safety and efficiency, even when their field of view is limited. © 2023 IEEE.

关键词： Air navigation

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CNN-Based Task State Estimation for Safer Automation of Oxy-Fuel Metal Cutting 19

CNN-Based Task State Estimation for Safer Automation of Oxy-...

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19th IEEE International Conference on Automation Science and engineering, CASE 2023

作者： Akl, James Kodate, Shreedhar Calli, Berk Worcester Polytechnic Institute Robotics Engineering Department WorcesterMA01609 United States Worcester Polytechnic Institute Data Science Program WorcesterMA01609 United States

ISBN: (纸本)9798350320695

The industrial operation of oxy-fuel metal cutting via gas torches involves tasks such as ignition, preheating, and combustion along the target surface. Automated oxy-fuel cutting systems are exposed to risks and anomalies that can lead to incorrect actions and safety hazards. In this paper, we develop a classifier for online task state estimation to assess the cutting robot's actions, detect anomalies, and reduce the risk of hazards. Using representative footage from our robotic cutting experiments, we curate an image dataset labeled with four types of cutting task states. Using deep learning methods, we design and train a convolutional neural network model for classifying the cutting task state from input images. The classifier architecture is optimized for rapid inferences during online estimation. After evaluation, our classifier achieves an overall accuracy of 93.8 % with high inference speeds on two types of representative hardware. Our 'Oxy-fuel Cutting Task State' (OCTS) dataset is available at ***/10.5281/zenodo.7734951. © 2023 IEEE.

关键词： Risk assessment

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Opportunistic Synthesis in Reactive Games under Information Asymmetry

Opportunistic Synthesis in Reactive Games under Information ...

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IEEE Annual Conference on Decision and Control

作者： Abhishek N. Kulkarni Jie Fu Robotics Engineering Program Worcester Polytechnic Institute Worcester MA USA Faculty of the Department of Electrical and Computer Engineering with affiliation to Robotics Engineering Program Worcester Polytechnic Institute Worcester MA USA

ISBN: (数字)9781728113982

ISBN: (纸本)9781728113999

Reactive synthesis is a class of methods to construct a provably-correct control system, referred to as a robot, with respect to a temporal logic specification in the presence of a dynamic and uncontrollable environment. This is achieved by modeling the interaction between the robot and its environment as a two-player zero-sum game. However, existing reactive synthesis methods assume both players to have complete and symmetrical information, which is not the case in many strategic interactions. In this paper, we use a variant of hypergames to model the interaction between the robot and its environment;where the latter has incomplete information about the specification of the robot. We propose a novel method of opportunistic synthesis defined over the hypergame model to identify a subset of hypergame states from where the robot can leverage the asymmetrical information to achieve a better outcome, which is not possible if both players have symmetrical and complete information. By assuming the environment to play a stochastic strategy in its perceived sure-winning and sure-losing regions of the game, we show that by following the opportunistic strategy, the robot is ensured to only improve the outcome of the game-measured by satisfaction of sub-specifications-whenever an opportunity becomes available. We demonstrate the correctness and optimality of this method using a robot motion planning example in the presence of an adversary.

关键词： Robots Games Task analysis Computational modeling Game theory Planning Stochastic processes

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Perception-Action Coupling in Usage of Telepresence Cameras

Perception-Action Coupling in Usage of Telepresence Cameras

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IEEE International Conference on robotics and Automation (ICRA)

作者： Alexandra Valiton Zhi Li Robotics Engineering Program Worcester Polytechnic Institute Worcester MA USA

ISBN: (数字)9781728173955

ISBN: (纸本)9781728173962

Telepresence tele-action robots enable human workers to reliably perform difficult tasks in remote, cluttered, and human environments. However, the effort to control coordinated manipulation and active perception motions may exhaust and intimidate novice workers. We hypothesize that such cognitive efforts would be effectively reduced if the teleoperators are provided with autonomous camera selection and control aligned with the natural perception-action coupling of the human motor system. Thus, we conducted a user study to investigate the coordination of active perception control and manipulation motions performed with visual feedback from various wearable and standalone cameras in a telepresence scenario. Our study discovered rich information about telepresence camera selection to inform telepresence system configuration and possible teleoperation assistance design for reduced cognitive effort in robot teleoperation.

关键词： Cameras Task analysis Robot vision systems Robot kinematics Telepresence Teleoperators

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Feedforward augmented sliding mode motion control of antagonistic soft pneumatic actuators

Feedforward augmented sliding mode motion control of antagon...

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IEEE International Conference on robotics and Automation (ICRA)

作者： Erik H. Skorina Ming Luo Selim Ozel Fuchen Chen Weijia Tao Cagdas D. Onal Mechanical Engineering Department and Robotics Engineering Program Worcester Polytechnic Institute MA USA

ISBN: (纸本)9781479969241

Soft pneumatic actuators provide many exciting properties, but controlling them without the use of bulky and expensive flow-control valves can be difficult and computationally expensive. We seek a solution to this problem by introducing an inexpensive and reliable muscle-like linear soft actuator used antagonistically to operate a rigid 1-DoF joint, resulting in a system that combines the advantages of rigid and soft robotics. Using this setup, we performed precise motion control using a sliding mode feedback controller as well as a sliding mode controller augmented by a feedforward term to modulate the state of solenoid valves that drive each actuator. We found that both controllers performed equivalently well in following a step function and in responding to a disturbance. The feedforward augmented controller performed significantly better when following dynamic trajectories over a range of frequencies and with the addition of an external force. The next step will be to modify our valve control scheme to allow for the determination of both the position and stiffness of the joint, better leveraging the advantages of soft pneumatic actuators.

关键词： Actuators Joints Valves Pulse width modulation Rubber Motion control Solenoids

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