Snake robots can be used to assist experts during surgical operations on internal organs via natural orifices. However, real-time control of such robot in Mater Slave (MS) teleoperation is a major challenge. Inverse kinematics solution of snake robots has being a key challenge towards real time control especially if the robot is hyper-redundant. This paper proposes a method that can achieve fast and precise inverse kinematics solution for real time control MS teleoperation. Monte Carlo method is applied to determine possible positions needed to reach a given target point, while best position is chosen based on the optimization algorithm. For workspace isomerism, the proposed method automatically determines appropriate kinematics mapping for the robots. Experimental results show that the method can achieve accurate position tracking in MS teleoperation.
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http://dx.doi.org/10.1109/EMBC.2017.8037817 | DOI Listing |
Sci Rep
January 2025
School of Mathematics and Computer, Wuhan Polytechnic University, Wuhan, 430048, China.
The rapid changes in the global environment have led to an unprecedented decline in biodiversity, with over 28% of species facing extinction. This includes snakes, which are key to ecological balance. Detecting snakes is challenging due to their camouflage and elusive nature, causing data loss and feature extraction difficulties in ecological monitoring.
View Article and Find Full Text PDFBiomimetics (Basel)
December 2024
College of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
The body structures and motion stability of worm-like and snake-like robots have garnered significant research interest. Recently, innovative serial-parallel hybrid segmented robots have emerged as a fundamental platform for a wide range of motion modes. To address the hyper-redundancy characteristics of these hybrid structures, we propose a novel caterpillar-inspired Stable Segment Update (SSU) gait generation approach, establishing a unified framework for multi-segment robot gait generation.
View Article and Find Full Text PDFISA Trans
November 2024
College of Electrical Engineering and Automation, Fuzhou University, Fuzhou, 350108, Fujian, China; 5G+ Industrial Internet Institute, Fuzhou University, Fuzhou, 350108, Fujian, China. Electronic address:
This paper proposes a leader-follower control method for multiple snake robot formation. Based on the simplified snake robot model, this work improves the traditional Serpenoid gait mode to a time-varying frequency form. Combined with the line-of-sight (LOS) method, a snake robot trajectory tracking controller is designed to enable the leader to track the desired trajectory at the ideal velocity.
View Article and Find Full Text PDFBiomimetics (Basel)
November 2024
Jiangsu Key Laboratory of Mine Mechanical and Electrical Equipment, School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China.
Snake robots require autonomous localization and mapping capabilities for field applications. However, the characteristics of their motion, such as large turning angles and fast rotation speeds, can lead to issues like drift or even failure in positioning and map building. In response to this situation, this paper starts from the gait motion characteristics of the snake robot itself, proposing an improved gait motion method and a tightly coupled method based on IMU and visual information to solve the problem of poor algorithm convergence caused by head-shaking in snake robot SLAM.
View Article and Find Full Text PDFBiomimetics (Basel)
November 2024
Escuela Técnica Superior de Ingeniería y Diseño Industrial, Universidad Politécnica de Madrid, Ronda de Valencia, 3, 28012 Madrid, Spain.
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