Patent · US Expired

Method of regulating the armature impact speed in an electromagnetic actuator by controlling the current supply based on performance characteristics

US6373678B1 · kind B1 · utility

7Cited by

3References

1Claims

0Family size

Assignee

FEV MOTORENTECHNIK GMBH · DE

Inventors

Leonhardt Bartsch · Aachen, DE
Lutz Kather · Würselen, DE
Hans Kemper · Aachen, DE
Frank van der Staay · Aachen, DE

Key dates

Filing date	May 3, 2000
Grant date	Apr 16, 2002
Priority date	—
Expiry date	May 3, 2020

Classification

Technology area (CPC H)Electricity
CPC primaryH01F2007/1894
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method of controlling a supply current applied to an electromagnet of an electromagnetic actuator by a control unit for obtaining a low impact speed of a reciprocating armature of the actuator upon arrival of the armature at a pole face of the electromagnet, includes the following steps: during travel of the armature toward the pole face detecting displacements of the armature and a sequence of the armature speed as actual values; comparing the actual values with a performance characteristic field stored in the control unit and relating to a predetermined relationship between armature speed and armature displacement for the armature travel toward the pole face; determining a desired value for the supply current from the comparison step; comparing an actual value for the supply current with the determined desired value; adjusting the supply current based on a difference between the actual and desired values; and applying the adjusted supply current to the electromagnet.

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