external excitationの例文

• Several methods of external excitation have been used.
• Parametric resonance takes place when the external excitation frequency equals twice the natural frequency of the system.
• The external excitation causes temperature contrasts associated with material inhomogeneities or defects occurrence or it can be used for material properties identification.
• Active thermography is an advanced nondestructive testing procedure, which uses a thermography measurement of a tested material thermal response after its external excitation.
• For this purpose, by means of measurement results, proper approximate formulas have been developed, which describe respective electromagnetic external excitations produced by the electric motor,.
• The propagation of an electromagnetic wave into a dielectric excites a polarization wave in the medium of opposite sign ( i . e . locally charges move to partially cancel the external excitation ).
• The other consequence of the unstable ground state is that the excimer or exciplex species must be generated by an external excitation ( either through a discharge, an electron beam, microwave, or radiation ).
• Parametric resonance is the physical phenomenon where an external excitation, at a specific frequency and typically orthogonal to the plane of displacement, introduces a periodic modulation in one of the system parameters resulting in a buildup in oscillatory amplitude.
• Typically, external excitation is performed with optical devices such as photographic flashes ( for heat pulsed stimulation ) or halogen lamps ( for periodic heating ), whereas internal excitation can be achieved by means of mechanical oscillations, with a sonic or ultrasonic transducer for both burst and amplitude modulated stimulation.
• External excitation might be needed in addition to high speed rotation of the shaft . There is also the fact that when powered it spins far faster than is likely to be achieved when you attempt to make it a generator from normal amounts of air flow . talk ) 21 : 37, 4 June 2008 ( UTC)
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