Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1994-12-20
1996-02-20
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250574, 356436, G01N 2149
Patent
active
054931274
ABSTRACT:
A closed loop feedback control for enhancing the response of electrorheological fluid having a light source and a photodetector measuring the light transmission through the electrorheological fluid. A manually controllable signal generator generates a reference signal indicative of the desired transmission through the electrorheological fluid. A control amplifier responsive to the difference between the measured transmission and the reference signal changes the value of the electric field being applied across the electrorheological. The change in the electric field selected to significantly reduce the time required for the electrorheological fluid to change from its current state to the desired state.
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Lloyd John R.
Radcliffe Clark J.
Calogero Stephen
Michigan State University
Westin Edward P.
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