Laundering apparatus, method of operating a laundry machine, con

Details Laundering apparatus, method of operating a laundry machine, con Laundering apparatus, method of operating a laundry machine, con

1980-04-17

1983-06-28

Truhe, J. V.

Electricity: motive power systems

Limitation of motor load, current, torque or force

318138, 318254, 318345R, 318317, H02P 506

Patent

active

043908268

ABSTRACT:
A method of operating a laundry machine. The machine has a pair of rotatable components and is driven by an electronically commutated motor having a stationary assembly with a plurality of winding stages and also having a rotatable assembly adapted to be selectively coupled to at least one of the rotatable components. In this method, a DC voltage for application to the motor is received, and a first control function is imposed on the operation of the machine to control the application of the DC voltage in accordance with a selected one of a plurality of first waveshapes so as to provide a resultant effective voltage to the motor. A second control function is imposed on the operation of the machine through the controlled application of the DC voltage to selectively set the maximum amplitude of the effective voltage, and the winding stages are commutated by applying the effective voltage thereto in sequence whereby the first and second control function jointly determine the angular velocity of the at least one rotatable component.
A laundering apparatus, a control system for an electronically commutated motor, a method of operating an electronically comutated motor, and a circuit are also disclosed.

REFERENCES:
patent: 3969658 (1976-07-01), Htsui
patent: 4005347 (1977-01-01), Erdman
patent: 4015182 (1977-03-01), Erdman
patent: 4016468 (1977-04-01), Graf
patent: 4047081 (1977-09-01), Liska
patent: 4051417 (1977-09-01), Fujinawa et al.
patent: 4064443 (1977-12-01), Yamada et al.
patent: 4103216 (1978-07-01), Hayes
patent: 4151450 (1979-04-01), Fukuma et al.
patent: 4167693 (1979-09-01), Liska et al.
patent: 4169990 (1979-10-01), Lerdman

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