Probe actuation system with feedback controller
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United States of America Patent
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Mar 20, 2018
Issued Date -
N/A
app pub date -
Feb 27, 2015
filing date -
Feb 28, 2014
priority date (Note) -
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Abstract
A probe actuation system has a detection system arranged to measure a position or angle of a probe to generate a detection signal. An illumination system is arranged to illuminate the probe. Varying the illumination of the probe causes the probe to deform which in turn causes the detection signal to vary. A probe controller is arranged to generate a desired value which varies with time. A feedback controller is arranged to vary the illumination of the probe according to the detection signal and the desired value so that the detection signal is driven towards the desired value. The probe controller receives as its inputs a detection signal and a desired value, but unlike conventional feedback systems this desired value varies with time. Such a time-varying desired value enables the probe to be driven so that it follows a trajectory with a predetermined speed. A position or angle of the probe is measured to generate the detection signal and the desired value represents a desired position or angle of the probe.
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