Patent · US Expired

Method of checking a capacitive actuator

US6349705B1 · kind B1 · utility

9Cited by

4References

10Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Richard Pirkl · Regensburg, DE
Achim Przymusinski · Regensburg, DE
Walter Schrod · Regensburg, DE
Mark Elliott · Regensburg, DE

Key dates

Filing date	Mar 9, 2000
Grant date	Feb 26, 2002
Priority date	—
Expiry date	Mar 9, 2020

Classification

Technology area (CPC H)Electricity
CPC primaryH10N30/802
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A capacitive actuator is driven with a control signal st. The duration ti of actual actuator actuation is compared with the duration tst of the control signal st. Proper operation is determined, and the actuator is assumed to be operating correctly, if the measured duration ti is within a range determined by the duration tst of the control signal.

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