scholarly journals Design and Control Strategy of Bio-inspired Underwater Vehicle with Flexible Propulsor

2021 ◽  
Vol 8 ◽  
pp. 57-65
Author(s):  
Santanu Mitra ◽  
Vaibhav Sehgal ◽  
Shubham Rathore ◽  
Raghav Puri ◽  
Shivani Chouhan ◽  
...  
Keyword(s):  
Autonomous Underwater Vehicle ◽  
Underwater Vehicle ◽  
Underwater Robotics ◽  
Swimming Pattern ◽  
Vehicle Efficiency ◽  
Body Design ◽  
Turning Motion ◽  
And Control ◽  
Manta Ray ◽  
Propulsive Mechanism

Biomimetics aims to take inspiration from nature and develop new models and efficient systems for a sustainable future. Bioinspired underwater robotics help develop future submarines that will navigate through the water using flexible propulsor. This research has focused on the Manta Ray species as batoid has a unique advantage over other species. This study also aims to improve AUV (Autonomous Underwater Vehicle) efficiency through biomimetic design, the purpose of which is to observe and study the marine environment, be it for sea exploration or navigation. The design and prototyping process of bioinspired AUVs have been mentioned in this study, along with testing a propulsive mechanism for efficient swimming and turning capabilities. The Robot was designed taking structural considerations from the actual Manta-Ray locomotion and body design. The propulsion mechanism and control circuit were then implemented on the developed systems. The prototype of the Manta Ray was able to generate a realistic swimming pattern and was tested in an acrylic tank. The experimental results obtained in the tank basin are very close to the results we observe in the real-world scenario in terms of the vehicle's forward and turning motion.

scholarly journals An Overview of Autonomous Underwater Vehicle Research and Testbed at PeRL

2009 ◽  
Vol 43 (2) ◽  
pp. 33-47 ◽  
Author(s):  
Hunter C. Brown ◽  
Ayoung Kim ◽  
Ryan M. Eustice
Keyword(s):  
Real Time ◽  
Autonomous Underwater Vehicle ◽  
Underwater Vehicle ◽  
University Of Michigan ◽  
Major Research ◽  
Research Areas ◽  
Localization And Mapping ◽  
Navigation And Control ◽  
The University ◽  
And Control

AbstractThis article provides a general overview of the autonomous underwater vehicle (AUV) research thrusts being pursued within the Perceptual Robotics Laboratory (PeRL) at the University of Michigan. Founded in 2007, PeRL's research centers on improving AUV autonomy via algorithmic advancements in environmentally based perceptual feedback for real-time mapping, navigation, and control. Our three major research areas are (1) real-time visual simultaneous localization and mapping (SLAM), (2) cooperative multi-vehicle navigation, and (3) perception-driven control. Pursuant to these research objectives, PeRL has developed a new multi-AUV SLAM testbed based upon a modified Ocean-Server Iver2 AUV platform. PeRL upgraded the vehicles with additional navigation and perceptual sensors for underwater SLAM research. In this article, we detail our testbed development, provide an overview of our major research thrusts, and put into context how our modified AUV testbed enables experimental real-world validation of these algorithms.

scholarly journals Investigation into the Dynamics and Control of an Underwater Vehicle-Manipulator System

2013 ◽  
Vol 2013 ◽  
pp. 1-13 ◽  
Author(s):  
Mohan Santhakumar
Keyword(s):  
Autonomous Underwater Vehicle ◽  
Underwater Vehicle ◽  
Dynamic Coupling ◽  
Parameter Uncertainties ◽  
External Disturbances ◽  
Model Reference Control ◽  
Control Scheme ◽  
Underwater Manipulator ◽  
Dynamics And Control ◽  
And Control

This study addresses the detailed modeling and simulation of the dynamic coupling between an underwater vehicle and manipulator system. The dynamic coupling effects due to damping, restoring, and inertial effects of an underwater manipulator mounted on an autonomous underwater vehicle (AUV) are analyzed by considering the actuator and sensor characteristics. A model reference control (MRC) scheme is proposed for the underwater vehicle-manipulator system (UVMS). The effectiveness of the proposed control scheme is demonstrated using numerical simulations along with comparative study between conventional proportional-integral-derivative (PID) control. The robustness of the proposed control scheme is also illustrated in the presence of external disturbances and parameter uncertainties.

scholarly journals High Accuracy Attitude and Navigation System for an Autonomous Underwater Vehicle (AUV)

ACTA IMEKO ◽  
2018 ◽  
Vol 7 (2) ◽  
pp. 3 ◽  
Author(s):  
Enrico Petritoli ◽  
Fabio Leccese
Keyword(s):  
Control System ◽  
Navigation System ◽  
Autonomous Underwater Vehicle ◽  
Underwater Vehicle ◽  
High Accuracy ◽  
Center Of Gravity ◽  
And Control ◽  
Control Surfaces

<span lang="EN-GB">This paper examines the development of an attitude and control system for a tailless AUV (Autonomous Underwater Vehicle) without movable control surfaces. As the AUV does not have movable surfaces, the buoyancy system and the center of gravity displacement manage the entire maneuvering system.</span>

AUV with Variable Vector Propeller

2000 ◽  
Vol 12 (1) ◽  
pp. 60-65 ◽  
Author(s):  
Yutaka Nagashima ◽  
◽  
Takakazu Ishimatsu ◽  
Jamal Tariq Mian ◽  
Keyword(s):  
Acoustic Communication ◽  
Autonomous Underwater Vehicle ◽  
Underwater Vehicle ◽  
Logic Circuits ◽  
Underwater Acoustic Communication ◽  
Underwater Acoustic ◽  
Distributed Controller ◽  
Communication Reliability ◽  
Command Signals ◽  
And Control

We developed an autonomous underwater vehicle (AUV) with a distributed controller and underwater acoustic communication. It is compact and lightweight thanks to its variable vector propeller and control using sophisticated logic circuits. Control is very precise using underwater ultrasonic command signals. Experiments showed that the AUV moves along a path at the desired position and azimuth. We confirmed the feasibility of our algorithm for increasing ultrasonic communication reliability.

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