Title:
ROTATION SENSOR
Document Type and Number:
WIPO Patent Application WO/2003/025516
Kind Code:
A1
Abstract:
A rotation sensor which easily reduces output ripples markedly. An output signal of a rotation sensing means (C1) is converted to a rotation angle and an angular velocity by a rotation angle sensing section (45) and an angular velocity sensing section (47). A ripple frequency per turn of the rotation angle is multiplied by the rotation angle in a frequency gain adjusting section (51). An angle obtained by adding a predetermined phase angle from the phase adjusting section (49) to the product is multiplied by an angular velocity via a sine (cosine) operating section (55) which outputs the sine value or cosine value and via a gain adjusting section (57) which multiplies the output of the sine (cosine) operating section by a predetermined gain. An arithmetic result by a multiplier (59) is subtracted from the angular velocity by the subtractor (61) to generate an angular velocity signal.
Inventors:
MORISHITA MIMPEI (JP)
Application Number:
PCT/JP2002/009515
Publication Date:
March 27, 2003
Filing Date:
September 17, 2002
Export Citation:
Assignee:
TOSHIBA ELEVATOR KK (JP)
MORISHITA MIMPEI (JP)
MORISHITA MIMPEI (JP)
International Classes:
B66B1/34; G01D5/244; G01D5/245; G01P3/46; G01P3/48; G01P3/489; H02K11/00; H02K24/00; H02K29/06; H02K29/14; H02P6/10; H02K29/03; (IPC1-7): G01D5/245; G01P3/46; H02K11/00
Foreign References:
| US5760359A | 1998-06-02 | |||
| JPS63179259A | 1988-07-23 | |||
| JPH02184286A | 1990-07-18 | |||
| JP2001157477A | 2001-06-08 |
Other References:
See also references of EP 1426736A4
None
None
Attorney, Agent or Firm:
Yoshitake, Kenji (Room 323 Fuji Bldg., 2-3, Marunouchi 3-chom, Chiyoda-ku Tokyo, JP)
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