Buoyancy adjustment device for small underwater robot

Abstract

Under water robot is very usefull for getting visual information under the water. When the robot uses vartilcal thruster with water jet, it jummed the sediment on the buttom groud of the lake. It distubes observation of under water on dision for visual. It is good idea to use buoyancy adjustment deive for moving vartial positon under the water. We cosider the mechanism suite for small water robot.