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A control law for a self-excited system using state feedback linearization and coordinate transformation is developed. The system consists of an elastically supported hinged thin airfoil, which is subjected to a uniform steady airflow A nonlinear aerodynamic model is used to account for the...
The effective control of vibration is essential in many systems, including remote sensing applications where high resolution is needed to observe features on Earth from a space platforn. It is advantageous to have a passive system that has the ability to effectively reduce the response of a...
The periodic disturbances caused by the inherent eccentricity and unbalancing in compact disk systems is one of the prominent radial-tracking problems of high-speed and high-density optical storage systems. To compensate these periodic disturbances, an adaptive feedforward compensation technique...
In this paper we present a simulation based on the physical model of a cylindrical, plunge grinder with hydrostatic slideways and hydrostatic bearings of a grinding wheel spindle. The simulation was carried out in order to check the influence of the grinding process on the forced vibration...
A semi-actively controlled impact systemis studied, which adjusts an impulse exerted by the external impact. Also, an active impact control system using a servo valve is introduced, and these performances are compared. The systems should respond to the extremely short impulse and control the...
It has been observed that finite elem-ent or finite difference models of order n can approximate with fair accuracy less than one-third of the eigenvalues of the underlying continuous system corresponding to the low spectrum. We present a new spectral conforming discrete model that estimates n...
One of the main difficulties connected with the use of dynamic methods for damage detection in structures lies in the small sensitivity of the dynamic parameters to damage. This is an intrinsic feature of structural diagnostics based on dynamic data and represents a source of important...
High magnetic field strength and high-speed gradient coil current switching are becoming ever more commonplace in magnetic resonance imaging scanners. These and other factors are combining to yield high acoustic sound pressure levels (SPLs) in and around magnetic resonance imagers. Studies have...
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