Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...
Patent
1992-06-25
1994-06-21
Shoop, Jr., William M.
Electricity: motor control systems
Closed loop speed control system for dc motor with commutator
Armature control by digital or combined analog and digital...
15319, 15339, H02P 517
Patent
active
053234839
ABSTRACT:
The speed of the suction motor in a vacuum cleaner can automatically be controlled according to the size and amount of the sucked dust on floors, carpets and the like to be cleaned. The amount of dust being sucked is detected, pulse signals corresponding to the detected amount of the sucked dust are output, a duty cycle of the output pulses is calculated for a predetermined period of time, the amount of dust according to the calculated duty cycle is calculated and a firing angle of the suction motor is controlled based on the calculated values of the amount of dust. Power consumption and noise in the vacuum cleaner are reduced and the user can exactly plan his or her cleaning schedule in consideration of the amount of dust. Further, the current speed of the suction motor is displayed on the display, thereby enabling the user to exactly recognize the current amount of dust.
REFERENCES:
patent: 4370690 (1983-01-01), Baker
patent: 4402607 (1983-07-01), McVay et al.
patent: 4601082 (1986-07-01), Kurz
patent: 4607228 (1986-08-01), Reif
patent: 4680827 (1987-07-01), Hummel
patent: 4767213 (1988-08-01), Hummel
patent: 4937912 (1990-07-01), Kurz
patent: 5075607 (1991-12-01), Koharagi
patent: 5136750 (1992-08-01), Takashima et al.
patent: 5144715 (1992-09-01), Matsuyo et al.
patent: 5152028 (1992-10-01), Hirano
patent: 5163202 (1992-11-01), Kawakami et al.
patent: 5182833 (1993-02-01), Yamaguchi et al.
Goldstar Co. Ltd.
Martin David
Shoop Jr. William M.
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