Servomechanisms

Details Servomechanisms Servomechanisms

1981-11-17

1984-10-23

Ruggiero, Joseph F.

Boots, shoes, and leggings

318563, 360 77, 364183, 364184, 364400, G05B 2300

Patent

active

044791771

ABSTRACT:
A servomechanism avoids load-damaging conditions by being shut down whenever a power-amplifier saturation detector fails to detect a change in the saturation state of the power amplifier in response to the periodic and momentary replacement of the demand signal by one or other of two test signals, which of the two test signals is selected being dependent upon the expected direction of possible saturation of the power amplifier and the polarity of both test signals being the same as the polarity of the applied demand signal.

REFERENCES:
patent: 3149270 (1964-09-01), Smyth et al.
patent: 3462662 (1969-08-01), Carpenter
patent: 3624479 (1971-11-01), Callas
patent: 3932738 (1976-01-01), Hauber et al.
patent: 4263580 (1981-04-01), Sato

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