نتایج جستجو برای: frequency stability
تعداد نتایج: 771021 فیلتر نتایج به سال:
Frequency stability is key to the performance of nanoresonators. This stability is thought to reach a limit with the resonator's ability to resolve thermally induced vibrations. Although measurements and predictions of resonator stability usually disregard fluctuations in the mechanical frequency response, these fluctuations have recently attracted considerable theoretical interest. However, th...
n this paper we examine stability of Lur’e-type systems arising as a feedback superpositions infinite-dimensional linear blocks, described by integrodifferential Volterra equations, and periodic nonlinearities. Such have multiple equilibria, so traditional methods investigation, defined for with single equilibrium are no good here. In the Popov method priori integral indices is combined two spe...
We consider the solution of the balancing-related frequency-weighted model and controller reduction problems using accuracy enhanced numerical algorithms. We propose /rst new stability-enforcing choices of the frequency-weighted grammians which can guarantee the stability of reduced models for two-sided frequency weights. Then we show that for the frequency-weighted controller reduction problem...
The stability of a linear ac trap for neutral polar molecules is investigated both theoretically and experimentally. While the overall stability is found to be well described by the linearized equations of motion within the usual framework of stability diagrams, instabilities similar to those observed in anharmonic radio-frequency ion traps occur inside the nominal stable regions. These motiona...
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