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US 2012/0068642 A1Published application
Single phase dc brushless motor controller and method for controlling rotation speed and direction of single phase dc brushless motor
AssigneeDelta Electronics, Inc.
InventorsLee-Long CHEN, Ya-Sen TU, Chia-Ching TSAI
Life of this patent
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Abstract
A single phase DC brushless motor controller, including: a micro control unit including: a Pulse Width Modulation (PWM) pin for receiving a PWM signal from a system; and a commutation logic unit for controlling the speed and rotation of a single phase DC brushless motor according to the PWM signal.
Claims10
A single phase DC brushless motor controller, comprising:
- a micro control unit comprising:
- a Pulse Width Modulation (PWM) pin for receiving a PWM signal from a system;
- and
- a commutation logic unit for controlling the speed and rotation of a single phase DC brushless motor according to the PWM signal.
1 more element
A method for controlling the speed and rotation of a single phase DC brushless motor control, comprising:
- receiving a PWM signal;
- and
- controlling the speed and rotation of the single phase DC brushless motor according to the PWM signal.
A method for changing rotation direction of a single phase DC brushless motor, comprising:
- when about to change the direction of the single phase DC brushless motor, eliminating the magnetic field of a stator of the single phase DC brushless motor;
- and
- making the stator generate a reverse rotation magnetic field at the time the single phase DC brushless motor is still rotating under inertia-driven force circumstance.
Dependencies are inferred from the claim text.