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Flux Observer for Spool Displacement Sensing in Self-Sensing Push-Pull Solenoids
| Content Provider | Semantic Scholar |
|---|---|
| Author | Li, Perry Y. Yuan, Qing Hui |
| Copyright Year | 2005 |
| Abstract | Spool position feedback in an electrohydraulic valve typically requires a spool displacement sensing device such as a LVDT. Self-sensing is the methodology to obtain spool displacement information directly from the solenoid spool actuators, thus obviating the additional cost and footprint of a LVDT or another displacement sensing device. A self-sensing scheme that uses only the measurement of electrical signals to the pair of push-pull solenoids was first proposed in [1]. It uses the position dependence of electrical inductance in the solenoids to infer the spool displacement. The scheme in [1] relies on a flux observer and several infinite dimensional filters that require explicit resets, and is prone to singularity. The present paper proposes a modified scheme in which the flux observer (and hence the self-sensing) problem is cast in a linear time varying system setting so that standard linear observer design techniques can be brought to bear. |
| Starting Page | 772 |
| Ending Page | 776 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.me.umn.edu/~lixxx099/papers/ICFP05-self-sense-final.pdf |
| Alternate Webpage(s) | http://www.me.umn.edu/~pli/papers/ICFP05-self-sense-final.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
