Development of Micro AUVs for Pipe Inspection

Projects in the robotics category:

  • Biomimetics: Robotic Stingrays Biomimetics: Robotic Stingrays
  • Biomimetics: Robotic fish Biomimetics: Robotic fish
  • In-Pipe Leak Detection In-Pipe Leak Detection
  • Inspection Robots: Robots for Inspecting Liquefied Natural Gas Storage Tanks Inspection Robots: Robots for Inspecting Liquefied Natural Gas Storage Tanks
  • Optical Assembly Station Optical Assembly Station
  • Palletizing Robots Palletizing Robots
  • High Speed Direct-Drive Robots High Speed Direct-Drive Robots

 

 

Robot Design

 Robot Prototype

 

A tetherless robot is developed for maneuvering inside 4-inch-diameter (10 cm) pipe networks. This ellipsoidal micro drone is capable of path following and making very tight turns. It will be used to carry leak sensors into water distribution networks and perform high speed, full coverage leak detection in every branch of the pipes.

Published in IROS 2015 paper

 

 

Swimming speed and turning radius are important measures of robot maneuverability. A test run in the open water shows that the robot is very good at maneuvering in water. It can swim easily at 1.3 ft/s (0.4m/s or about 5 body length/s) and turns at a 0.6 inch radius of curvature (1.5 cm or less than 0.2 body length).

 

RIM Propeller

 

 

The robot is actuated by a pair of RIM driven propellers. It is a brushless DC motor with its rotor replaced by a hubless propeller. Each motor-propeller assembly is measured to be 1.3 inch (33mm) in diameter and less than 0.5 inch (12mm) in thickness. This compact actuator is able to generate 0.4N of thrust given a 7.4V, 1A power supply.

Published in DSCC 2014 paper

 RIM propeller and a quarter