Title:
ELECTROMAGNETIC SUSPENSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2010/064291
Kind Code:
A1
Abstract:
A variation of the performance of an electromagnetic suspension unit is detected. If the integral value Σ| Vs'-Vs*| of the absolute value of the difference between the actual value Vs* and the estimate Vs' of the extension/contraction speed of a shock absorber over a preset time is larger than a performance variation judgment threshold Sth, it is judged that the performance of the electromagnetic suspension has varied (S16). If the integral value Σ|Vs*| of the absolute value of the actual value Vs* is larger than the integral value Σ|Vs'| of the absolute value of the estimate Vs' by a preset value, it is judged that the performance of the shock absorber has varied, resulting in causing damping force shortfall (S22, S23). In such a way, a variation of the performance of the electromagnetic suspension can be detected on the basis of the extension/contraction speed of the shock absorber.
Inventors:
INOUE HIROFUMI (JP)
HORIE MASANORI (JP)
HORIE MASANORI (JP)
Application Number:
PCT/JP2008/071804
Publication Date:
June 10, 2010
Filing Date:
December 01, 2008
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
INOUE HIROFUMI (JP)
HORIE MASANORI (JP)
INOUE HIROFUMI (JP)
HORIE MASANORI (JP)
International Classes:
B60G13/08; B60G17/0185; B60G17/00; B60G17/018
Foreign References:
| JP3629137B2 | 2005-03-16 | |||
| JPH07444B2 | 1995-01-11 | |||
| JPS6079030U | 1985-06-01 | |||
| JP3046040B2 | 2000-05-29 | |||
| JP2005035486A | 2005-02-10 | |||
| JP2005162021A | 2005-06-23 | |||
| JP2006143146A | 2006-06-08 | |||
| JP2006168400A | 2006-06-29 | |||
| JPH06344745A | 1994-12-20 | |||
| JP2008296802A | 2008-12-11 | |||
| JP2009023624A | 2009-02-05 |
Other References:
See also references of EP 2364866A4
Attorney, Agent or Firm:
KANDO, Norikazu et al. (JP)
Norikazu Kobe (JP)
Norikazu Kobe (JP)
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