Patent · US Expired

Circuit configuration for identifying a short circuit or shunt event in a servomotor system

US5614798A · kind A · utility

5Cited by

11References

19Claims

0Family size

Assignee

Alfred Teves GmbH · DE

Inventors

Michael Zydek · Langgöns, DE
Mario Engelmann · Rheinböllen, DE
Lothar Spornitz · Frankfurt am Main, DE

Key dates

Filing date	Jun 7, 1995
Grant date	Mar 25, 1997
Priority date	—
Expiry date	Jun 7, 2015

Classification

Technology area (CPC H)Electricity
CPC primaryH02H3/445
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.