METHOD FOR CONTROLLING REVOLUTION OF BRUSHLESS MOTOR AND WASHING MACHINE EMPLOYING IT

Title:

METHOD FOR CONTROLLING REVOLUTION OF BRUSHLESS MOTOR AND WASHING MACHINE EMPLOYING IT

Document Type and Number:

Japanese Patent JP3789843

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To control a revolution of a motor inexpensively by applying brake without generating any regenerative power by a convenient method.
SOLUTION: In the method for controlling the revolution of a brushless motor where a permanent magnet rotor is arranged in a stator having a three- phase winding, a PWM signal is formed in a drive control circuit including a microcomputer by three Hall ICs based on a position sensor signal, an inverter circuit is controlled by the PWM signal and the permanent magnet rotor is rotary driven through conduction control of the three-phase winding, the revolution is calculated from a pulse interval based on the position sensor signal and the voltage and phase being supplied to the motor are controlled depending on the load based on the revolution, thus applying a brake force to the motor.

Inventors:

Toshikashi Nio
Shinya Yamamoto
Kokonoki Akira

Application Number:

JP2002093909A

Publication Date:

June 28, 2006

Filing Date:

March 29, 2002

Export Citation:

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