Electronic motor controls, laundry machines including such...

Details Electronic motor controls, laundry machines including such... Electronic motor controls, laundry machines including such...

H - Electricity

02

P

318/55, 341/67

H02P 6/00 (2006.01) D06F 33/02 (2006.01) G05B 19/04 (2006.01) H02P 7/44 (1990.01)

Patent

CA 1289185

ABSTRACT OF THE DISCLOSURE A control apparatus and method of electronically cyclically controlling the supply of power to an electric motor including steps of setting a desired speed of rotation of the rotor of the motor, sensing the resistance to rotation of the motor and using responses from the sensing means to activate adjustment means to adjust the power supply to the motor to change the motor speed towards said desired speed and then operate the motor within a range of speeds at or close to said desired speed of rotation, switching off the supply of power to the motor, stopping its rotation and then repeating the cycle of operations with the motor running in the reverse direction. The motor is preferably used in a closed washing machine or similar application where rapid reversal is required.

615493

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