Patent · US Active

Controller for a brushless motor

US8476852B2 · kind B2 · utility

15Cited by

67References

13Claims

0Family size

Assignee

Dyson Technology Limited · GB

Inventors

David John Hawker · Malmesbury, GB
Hanping Dai · Malmesbury, GB

Key dates

Filing date	Apr 13, 2011
Grant date	Jul 2, 2013
Priority date	—
Expiry date	Mar 19, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH02P2209/07
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A controller for a brushless motor that includes a processor, a first timer, a second timer, a compare register, a comparator, an input, and one or more outputs. The processor starts the first timer in response to a signal at the input. The first timer then generates an interrupt after a first period. In response to the interrupt, the processor generates a first control signal at the outputs. The processor also loads the compare register and starts the second timer in response to either the input signal or the interrupt. The comparator then generates a second control signal at the outputs when the second timer and the compare register correspond. Additionally, a motor system that includes the controller.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.