The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 2013
Filed:
Oct. 04, 2011
Applicant:
Hanping Dai, Malmesbury, GB;
Inventor:
Hanping Dai, Malmesbury, GB;
Assignee:
Dyson Technology Limited, Malmesbury, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 23/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of controlling an electrical machine that includes commutating a phase winding of the electrical machine at a time T_COM() after a first edge and at a time T_COM() after a second edge of a rotor-position signal. T_COM() is defined by the equation: T_COM()=T_COM()+T_AVE−T_PD, where T_AVE is an average period between edges of the rotor-position signal, and T_PD is the period between the first and second edges. Additionally, a controller and control system that implement the method.