Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1990-10-04
1991-12-24
Ro, Bentsu
Electricity: motive power systems
Switched reluctance motor commutation control
318432, H02P 706
Patent
active
050756079
ABSTRACT:
Method and apparatus for operating a vacuum cleaner in which by detecting a rotational speed of a variable speed fan motor adapted to give a suction force to the cleaner and its change range, the choking state of the filter and the state of the cleaned surface are discriminated, and a speed command of the fan motor is corrected on the basis of the result of the discrimination, and the comfortable cleaning can be performed by the optimum suction force.
REFERENCES:
patent: 4546293 (1985-10-01), Peterson et al.
patent: 4680515 (1987-07-01), Crook
patent: 4686437 (1987-08-01), Langley et al.
patent: 4700116 (1987-10-01), Inoue et al.
patent: 4716347 (1987-12-01), Fujimoto
Endo Tsunehiro
Hishi Wakichiro
Ishii Yoshitaro
Jyoraku Fumio
Koharagi Haruo
Hitachi , Ltd.
Ro Bentsu
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