Apparatus for controlling the velocity of an electromechanical drive for interferometers and the like Patent
Describing device for velocity control of electromechanical drive mechanism of scanning mirror of interferometer
Nichols, G. B.↗
Engineering topics
Nichols, G. B.
Publications and source records attributed to Nichols, G. B..
Apparatus for phase stability determination Patent
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Nichols, G. B.↗
Digital system accurately controls velocity of electromechanical drive
Digital circuit accurately regulates electromechanical drive mechanism velocity. The gain and phase characteristics of digital circuits are relatively unimportant. Control accuracy depends only on the stability of the input signal frequency.
Nichols, G. B.↗
Computer determines high-frequency phase stability
Determination of phase stability of a high frequency signal using a computer is accomplished by a circuit using two auxiliary oscillators, multipliers and low-pass filters in cross correlation with the oscillator producing the signal of interest.
Nichols, G. B.↗