In this paper, the effectiveness of stiffness and damping of bearing is investigated on the natural frequencies of the rotor-bearing system. The rotor-bearing system consists of a shaft, two bearings and a disk between two bearings. Parallel spring-damper in horizental and vertical directions is considered for modeling the stiffness and damping of bearings. The gyroscopic effect is also conside...

The effect of random inputs on the movement of systems of solid bodies was investigated by many authors, see, for example, [1]. The paper deals with the analysis of the equations of gyroscopic systems under the influence of random forces. The possibility of the replacement of the equations of motion by the corresponding precessional equations is investigated. This approach is widespread in mech...

In the paper authors investigate dynamics of a controlled quadcopter in terms possibility its use for detection, observation, tracking and laser illuminating both stationary moving ground targets conditions impact random kinematic excitations. The drone is equipped with scanning Gyroscopic Head (GH) coupled target indicator. affected by disturbances form wind gusts or explosions missiles. Kinem...

Techniques using gyroscopic forces and scalar potentials are used to create swarming behaviors for multiple agent systems. The methods result in collision avoidance between the agents as well as with obstacles.

Quantum state preparation of mesoscopic objects is a powerful playground for the elucidation of many physical principles. The field of cavity optomechanics aims to create these states through laser cooling and by minimizing state decoherence. Here we demonstrate simultaneous optical trapping and rotation of a birefringent microparticle in vacuum using a circularly polarized trapping laser beam-...

This paper describes the design and realization of a miniature milling spindle with Active Magnetic Bearings (AMBs). Permanent magnet biased, reluctance type actuators position the rotor in five Degrees of Freedom (DOF), leaving the rotation unconstrained. A rotordynamic model was developed to expedite the controller design, and enabled modeling of the spindle’s performance under the influence ...

This study proposes the design of an active stabilizing system (ASAS) for a single-track vehicle. Using the gyroscopic effects of two flywheels, this system can generate control torque to stabilize the vehicle in cases where there is centrifugal force of turning. To control the flywheel gimbals to generate stabilizing torque, a model predictive controller (MPC) is applied to control the system....

In this paper, a gyroscopic mounting method for crystal oscillators to reduce the impact of dynamic loads on their output stability has been proposed. In order to prove the efficiency of this mounting approach, each dynamic load-induced instability has been analyzed in detail. A statistical study has been performed on the elevation angle of the g-sensitivity vector of Stress Compensated-cut (SC...

Analysis on Response of Magnetic Bearing System to External Forces Comparison between Optimal Regulator System and Independently Controlled System Takeshi MIZUNO, Toshiro HIGUCHI and Noboru AIKAWA One of the significant problems in designing a magnetic bearing control system is that there are gyroscopic couplings between two rotational motions of the suspended rotor. Because of these couplings ...

We consider the quadratic eigenvalues problem (QEP) of gyroscopic systems ðlMþ lGþ KÞx 1⁄4 0, where M 1⁄4 M>;G 1⁄4 G> and K 1⁄4 K> 2 R n with M being positive definite. Guo [Numerical solution of a quadratic eigenvalue problem, Linear Algebra and its Applications 385 (2004) 391–406] showed that all eigenvalues of the QEP can be found by solving the maximal solution of a nonlinear matrix equatio...