Boots – shoes – and leggings
Patent
1992-01-27
1994-03-01
Smith, Jerry
Boots, shoes, and leggings
364162, G05B 1302
Patent
active
052913902
ABSTRACT:
A control apparatus for a mechanical device includes a control element for receiving a reference input signal and supplying an operating signal to the mechanical device, a main feedback element for detecting the control signal and supplying the detected control signal to the control element, and an auxiliary feedback element for detecting the operating signal to be supplied to the mechanical element and supplying the detected operating signal to the control element. The control element produces the operating signal based on the reference input signal, the control signal supplied from the main feedback element, and the operating signal supplied from the auxiliary feedback element to regulate the control speed such that hunting in the control apparatus does not occur.
REFERENCES:
patent: 5057993 (1991-10-01), Kanda
patent: 5122963 (1992-06-01), Chen
patent: 5175678 (1992-12-01), Frerichs et al.
ISA Transactions, vol. 16, No. 4, 1977, Pittsburgh, US, pp. 59-67, D. Etchard: Forecasting and Compensating the Effects of Deadtime on a Commonly Applied Chemical Pacing Control Loop.
Automatisierungstechnik-AT, vol. 35, No. 11, 1987, Muenchen, DE, pp. 464-465, A. Glattfelder et al.: Zum Fuehrungsverhalten von PID-ARW-Eingroessenkreisen.
Smith Jerry
Tousi Cameron H.
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