This paper is devoted to the problem of rejecting oscillatory position-dependent disturbances with unknown frequency and unknown amplitude. The considered disturbances are here assumed to be produced by eccentricity in mechanical systems and drives. Most of the previous works on eccentricity cancellation assume a time-depending oscillation, we instead assume that the oscillatory disturbance is ...

in this paper, we calculate the eccentric connectivity index and the eccentricity sequence of two infinite classes of fullerenes with 50 + 10k and 60 + 12k (k in n) carbon atoms.

Because of the existence composite faults, which consist both short-out and eccentricity characteristics output voltage internal magnetic field aviation generators are less different than those single faults; this causes fault to be difficult identify. In order solve problem, paper proposes a diagnosis method using an enhanced fireworks algorithm (EnFWA) optimize deep belief network (DBN). The ...

Permanent magnet synchronous machines (PMSMs) are widely used in a variety of applications. The static eccentricity the rotor is common fault fabrication process. These faults cause imbalanced electromagnetic force and exert unexpected vibration acoustic noise during design In worst case, it causes bearing or motor failure. This research investigates impact this on temporal spatial harmonic dis...

The eccentricity of a node in a graph is defined as the length of a longest shortest path starting at that node. The eccentricity distribution over all nodes is a relevant descriptive property of the graph, and its extreme values allow the derivation of measures such as the radius, diameter, center and periphery of the graph. This paper describes two new methods for computing the eccentricity d...

The eccentricity distribution of exoplanets is known from radial velocity surveys to be divergent from circular orbits beyond 0.1 au. This is particularly the case for large planets where the radial velocity technique is most sensitive. The eccentricity of planetary orbits can have a large effect on the transit probability and subsequently the planet yield of transit surveys. The Kepler mission...

We consider the problem of constructing a multicast tree that connects a group of source nodes to a group of sink nodes (receivers) and minimizes the maximum end-to-end delay between any pair of source/sink nodes. This is known as the minimum eccentricity multicast tree problem, and is directly related to the quality of service requirements of real multipoint applications. We deal directly with...

This paper presents adaptive algorithms to compensate roll eccentricity perturbations in web transport systems. Roll eccentricity creates tension disturbances whose frequencies may be slowly varying due to the change of radius of the roll. The magnitude and phase of these perturbations are estimated through an adaptive algorithm that cancels the effect of these perturbations. The ability of the...