To facilitate the development of accessible space-bound robotic explorers, this work demonstrates a novel communication architecture intended for scientific CanSats. As low-cost terrestrial simulation platforms for or...
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This study proposes an autonomous caddie robot system that can automatically track a golf player. The caddie robot is designed to operate in two modes: an autonomous human-tracking mode, and a power-assisted manual dr...
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In this study, we tackle the complex task of enabling prosthetic hands to accurately reproduce sounds, a crucial aspect for distinguishing between different materials through auditory feedback. Sound identification, s...
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Agriculture is one of the oldest activities practiced by man. Due to its importance in our daily life and reliance on it, many technologists try to update a new development based on agricultural robots that perform we...
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The paper presents Simulink models of nonlinear elastomeric isolator (EI) widely used in mechanical engineering and construction for vibration protection of structures. Models with a hysteretic bilinear deformation di...
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作者:
Islam, ShafiqulNcf 263
Xavier University of Louisiana Dual-Degree Computer Science and Engineering Intelligent Robotics Mechatronics and Autonomous Systems Lab New OrleansLA70125 United States
This paper presents a delay-dependent convergence criterion for load frequency control (LFC) for smart power grid networks with the presence of disturbances and time-varying delays. The LFC scheme comprises delayed re...
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Controlled execution of dynamic motions in quadrupedal robots, especially those with articulated soft bodies, presents a unique set of challenges that traditional methods struggle to address efficiently. In this study...
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ISBN:
(数字)9798350384574
ISBN:
(纸本)9798350384581
Controlled execution of dynamic motions in quadrupedal robots, especially those with articulated soft bodies, presents a unique set of challenges that traditional methods struggle to address efficiently. In this study, we tackle these issues by relying on a simple yet effective two-stage learning framework to generate dynamic motions for quadrupedal robots. First, a gradient-free evolution strategy is employed to discover simply represented control policies, eliminating the need for a predefined reference motion. Then, we refine these policies using deep reinforcement learning. Our approach enables the acquisition of complex motions like pronking and back-flipping, effectively from scratch. Additionally, our method simplifies the traditionally labour-intensive task of reward shaping, boosting the efficiency of the learning process. Importantly, our framework proves particularly effective for articulated soft quadrupeds, whose inherent compliance and adaptability make them ideal for dynamic tasks but also introduce unique control challenges.
High-precision linear motor stages have been widely used for their excellent positioning accuracy and speed. However, core-type linear motor stages have performance limitations because of various nonlinear factors inc...
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ISBN:
(数字)9798350355369
ISBN:
(纸本)9798350355376
High-precision linear motor stages have been widely used for their excellent positioning accuracy and speed. However, core-type linear motor stages have performance limitations because of various nonlinear factors including cogging force, friction, and geometrical imbalance. This paper analyzes disturbances in velocity and position domains and trains a Two-Input-Single-Output (TISO) nonlinear model using the Gaussian process for the disturbance. With this, two state-dependent disturbances are appropriately removed. As a result, the control performance with a proposed controller is enhanced. Ultimately, this paper introduces three contribution points: 1) analysis of disturbances based on position/velocity, 2) design of TISO Gaussian process model, and 3) validation of proposed controller performance through simulation.
High-precision linear motor stages have been widely used for their excellent positioning accuracy and speed. However, core-type linear motor stages have performance limitations because of various nonlinear factors inc...
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ISBN:
(数字)9798350394085
ISBN:
(纸本)9798350394092
High-precision linear motor stages have been widely used for their excellent positioning accuracy and speed. However, core-type linear motor stages have performance limitations because of various nonlinear factors including cogging force, friction, and geometrical imbalance. This paper analyzes disturbances in velocity and position domains and trains a Two-Input-Single-Output (TISO) nonlinear model using the Gaussian process for the disturbance. With this, two state-dependent disturbances are removed effectively. As a result, the control performance with a proposed controller is enhanced. Ultimately, this paper introduces three contribution points: 1) analysis of disturbances based on position/velocity, 2) design of TISO Gaussian process model, and 3) validation of estimation performance of proposed algorithm through simulation.
Autonomous vehicles, such as Unmanned Aerial Vehicles (UAVs), have the potential to completely reshape various industries such as parcel delivery, agriculture, surveillance, and search-and-rescue missions. Consequentl...
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