Bristled Micromachines

Abstract

The paper deals with specific problems in area of the in-pipe machine design. Main purpose of the machine is to locomote inside pipe for pipe wall inspection otherwise for cable drawing into the pipe. The main attention is concentrated to the bristle, which has the key influence to the machine locomotion.

Modeling and Simulation of Vertical Position Stability of Quadrocopter

“…The development and investigation of autonomous flight systems have increased lately because of the increasing amount of applications of unmanned aerial vehicle (UAV) in military fields such as intelligence, surveillance, and reconnaissance missions, and in civil fields like aerial surveillance, aerial photography and video, firefighting, and many others that are emerging [1] [2]. The quadrocopter it's a flying object, which flies with a help by four propellers.…”

“…The simulation in software Matlab 2014b is done. There are used following parameters for simulation: weight = 0.5 kg; length of quadrocopter arm = 0.3 m; simulation time = 4 s; gravitational acceleration = 9.81 m/s 2 ; moment of inertia (diagonal matrix) = 0.005, 0.005, 0,0025 kgm 2 . The results of the simulation in the following figures are shown.…”