Title:
電磁アクチュエータの熱的保護
Document Type and Number:
Japanese Patent JP4741227
Kind Code:
B2
Abstract:
The present invention provides a method and apparatus for thermally protecting an electromagnetic actuator used to suppress vibrations in an elevator installation. The apparatus includes a temperature evaluation unit that determines an actual temperature of the actuator on the basis of a signal proportional to a current supplied to the actuator. A limiter restricts the current supplied to the actuator if the actual temperature of the actuator as determined by the temperature evaluation unit is greater than a predetermined temperature.
Inventors:
Elena Cortona
Joseph Husman
Joseph Husman
Application Number:
JP2004365355A
Publication Date:
August 03, 2011
Filing Date:
December 17, 2004
Export Citation:
Assignee:
INVENTIO AKTIENGESELLSCHAFT
International Classes:
B66B1/06; B66B1/44; B66B5/00; B66B5/02; B66B7/00; B66B7/02; B66B7/04; F02G1/04
Domestic Patent References:
| JP4299096A | ||||
| JP2002302359A | ||||
| JP3179193B2 |
Attorney, Agent or Firm:
Yoshio Kawaguchi
Makoto Ono
Katsuma Osaki
Mitsuaki Tsubokura
Makoto Ono
Katsuma Osaki
Mitsuaki Tsubokura