Circuit configuration for identifying a short circuit or shunt event in a servomotor system
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United States of America Patent
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Mar 25, 1997
Issued Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Nov 5, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A circuit configuration for the control of a servomotor (M) with the aid of current pulses supplied by a current-controlled final stage (1) of a control system. The pattern of current rise is analyzed after actuation of the final stage (1) for identifying a short circuit in the servomotor (M) across the power supply system (+U.sub.B). An excessively high current (I.sub.K), after a measuring period (T.sub.M), commencing after the transistor (LT) of the final stage (1) has been placed in saturated state, is indicative of a short circuit.
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