Stall current limiter for servo drive systems

Details Stall current limiter for servo drive systems Stall current limiter for servo drive systems

1979-04-23

1980-10-14

Eisenzopf, Reinhard J.

Aeronautics and astronautics

Aircraft control

Automatic

244 1713, 340 27SS, G05D 100

Patent

active

042276640

ABSTRACT:
The invention provides improvements whereby the stall current of an actuator servo loop is limited without adversely affecting actuator speed or servo loop dynamics by supplying variable current limits. Full high current capacity is allowed in dynamic situations, but a desirably severe current limit is imposed in the event of a long term stall of the actuator. A simple and inexpensive modification of the servo loop permits the improvement with no limitation of the maximum slew rate and no adverse effects on the large and small amplitude frequency response.

REFERENCES:
patent: 3213702 (1965-10-01), Deehan et al.
patent: 3920966 (1975-11-01), Knemeyer et al.
patent: 4063140 (1977-12-01), Kammerer et al.
patent: 4082238 (1978-04-01), Fabian et al.

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