Control of a brushless motor
AssigneeDyson Technology Limited
InventorsAndrew Charlton CLOTHIER, Stephen Greetham
Life of this patent
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Abstract
A method of controlling a brushless motor that includes exciting a winding of the motor for a conduction period over each electrical half-cycle of the motor. The length of the conduction period is defined by a waveform that varies periodically with time. Additionally, a control system that implements the method, and a motor system that incorporates the control system.
Claims24
A method of controlling a brushless motor, the method comprising exciting a winding of the motor for a conduction period over each electrical half-cycle of the motor, the length of the conduction period being defined by a waveform that varies periodically with time.
Dependencies are inferred from the claim text.