Title:
磁気軸受装置および低温液化ガス送液ポンプ
Document Type and Number:
Japanese Patent JP7382864
Kind Code:
B2
Abstract:
To provide a magnetic bearing device stably rotating while reducing a heating value, and a low temperature liquefied gas feed pump including the same.SOLUTION: A magnetic bearing device 300 supporting a rotating shaft includes a first electromagnet M1 and a second electromagnet M2, displacement sensors 121, 122, and an operation portion 100 for operating electric currents flowing to the first electromagnet M1 and the second electromagnet M2. In the operation portion 100, (a) control electric currents ic of the same value and opposite signs are calculated with respect to the first electromagnet M1 and the second electromagnet M2 on the basis of the displacement detected by the displacement sensors 121, 122, (b) bias electric currents ib of the same value and the same sign are calculated with respect to the first electromagnet M1 and the second electromagnet M2 on the basis of increase/decrease of the control electric currents ic, and (c) coil electric currents ic1, ic2 flowing to the first electromagnet M1 and the second electromagnet M2 are calculated by adding the control electric currents ic and the bias electric currents ib.SELECTED DRAWING: Figure 10
More Like This:
| WO/2007/049396 | HYBRID MAGNETIC BEARING |
| JP5445887 | Magnetic bearing equipment |
| JPH05118326 | FLAT SURFACE ROLLING GUIDE MECHANISM |
Inventors:
Hiroyuki Yamada
Application Number:
JP2020046442A
Publication Date:
November 17, 2023
Filing Date:
March 17, 2020
Export Citation:
Assignee:
ntn corporation
International Classes:
F16C32/04; F04D29/048
Domestic Patent References:
| JP2013068309A | ||||
| JP2015132340A | ||||
| JP2013057250A | ||||
| JP2019209399A |
Attorney, Agent or Firm:
Patent Attorney Fukami Patent Office
Previous Patent: Pointer position detection method and sensor controller
Next Patent: electrical junction box
Next Patent: electrical junction box