Patent · US Expired

Method of monitoring the end position of a controlling element and circuit arrangement for the carrying out of the method

US4888537A · kind A · utility

3Cited by

4References

4Claims

0Family size

Assignee

VDO Adolf Schindling AG · DE

Inventors

Hans Appel · Penzberg, DE
Heinz F. Ohm · Weiterstadt, DE
Klaus-Juergen Bluhm · Rheinböllen, DE
Kurt Probst · Schwalbach, DE

Key dates

Filing date	Apr 25, 1988
Grant date	Dec 19, 1989
Priority date	—
Expiry date	Apr 25, 2008

Classification

Technology area (CPC H)Electricity
CPC primaryH02P3/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The method for monitoring the end positions of a controlling element having a servomotor (1) comprises the recognition of the end position, for instance by interruption of the flow of current to the servomotor by limit switches (4, 5), and the subsequent action of a control pulse of opposite direction on the servomotor in order to brake the servomotor.

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