Abstract—In this study the regional stability of a rotor system which is supported on rolling bearings with radial clearance is studied. The rotor is assumed to be rigid. Due to radial clearance of bearings and dynamic configuration of system, each rolling elements of bearings has the possibility to be in contact with both of the races (under compression) or lose its contact. As a result, this ...

In this paper we analyze attitude tracking of a quadrotor unmanned aerial vehicle by employing a recently developed feedback strategy based upon hybrid systems theory. The hybrid feedback control strategy employs a family of synergistic potential functions on the special orthogonal group of order three, SO(3), that guarantees global asymptotic stability of a rigid bodies attitude to a given ref...

The article investigates the numeric simulation of two-way aeroelastic processes applied to the experimental phase of a compressor; physical, mathematical, rigid and grid models of the system “gas – rotor – stator” have been worked out; 2 FSI (two-way Fluid-Structure Interaction) calculations have been performed on the evaluation of the interaction between a gas-dynamic flow and a deformable ro...