Patent · US Expired

Process for controlling an actuator which can be adjusted by means of a proportional valve

US5251535A · kind A · utility

5Cited by

0References

9Claims

0Family size

Assignees

Siemens Aktiengesellschaft · DE
Mannesmann Rexrogh GmbH · DE
Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Franz Lacher · Tegernheim, DE
Erwin Grauvogl · Sinzing, DE
Hans Rauner · Nittenau, DE
Reinhard Auffhammer · Munich, DE
Harald Hahn · Dresden, DE
Helmut Patze · Frammersbach, DE

Key dates

Filing date	Jul 2, 1992
Grant date	Oct 12, 1993
Priority date	—
Expiry date	Jul 2, 2012

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/86614
WIPO fieldControl
WIPO sectorInstruments

Abstract

In a process for controlling an actuator which can be adjusted by means of a proportional valve, the proportional valve is controllable by means of two control magnets with control pulses acting in opposite directions. A phase angle between the control pulses is varied as a function of at least one control variable (command variable, correction variable or difference between the amplitudes or pulse durations of the control pulses), i.e. it is reduced as the control variable increases. This measure prevents undesired vibrations of the actuator and resulting noises.

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