Fail-safe potentiometer feedback system

Details Fail-safe potentiometer feedback system Fail-safe potentiometer feedback system

1987-09-21

1989-09-12

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

318603, 431 24, 431 59, G05B 106

Patent

active

048663638

ABSTRACT:
A fail-safe electronic position monitoring system for a motor is specifically described in a flame safeguard system. The same fail-safe system could be used more generally in any type of positional monitoring system using a potentiometer. The potentiometer and its wiper are monitored by a microcomputer which has stored in its memory a profile of at least three critical parameters. The parameters are a low voltage parameter, a high voltage parameter, and a parameter that deals with the rate of the voltage level change. The rate voltage level change includes monotonocity function.

REFERENCES:
patent: 4031442 (1977-06-01), Poppelreiter, II
patent: 4078198 (1978-03-01), Murakosi et al.
patent: 4476415 (1984-10-01), Kautz et al.
patent: 4481451 (1984-11-01), Kautz et al.
patent: 4484122 (1984-11-01), Day et al.
patent: 4518345 (1985-05-01), Mueller et al.
patent: 4636701 (1987-01-01), Kodera et al.
patent: 4712053 (1987-12-01), Numata

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