Disturbance-limiting circuit of redundant type for regulation equipment
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United States of America Patent
Stats
-
Oct 18, 1994
Grant Date -
N/A
app pub date -
Jun 25, 1992
filing date -
Jun 25, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A disturbance-limiting circuit for regulation equipment connected to an actuator controlling a process in which the actuator is controlled from a reference generator unit (1) via a plurality of regulator modules (3A, 3B, . . . , 3N) having their outputs connected to a common point (UP) so that the control value provided to the actuator at said point corresponds to the mean value of the respectively-provided voltages. The circuit is constituted by a voting circuit comprising modules (4A, 4B, . . . , 4N) each inserted between the output of one of the regulator modules and a corresponding respective resistor (RA, RB, . . . , RN), connected to the common point (UP). Each voting module includes an impedance adapter (7A) having its input connected to a regulator module and having its output connected to the corresponding respective resistor, said output is also connected via a resistor (9A) firstly to the input of the adapter via a clipping circuit (8A) and secondly to a point (UR) common to all of the adapters of the voting circuit.
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