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:
Apr. 18, 2000
Filed:
Aug. 25, 1997
Applicant:
Inventors:
Steve Rabin, San Diego, CA (US);
Kirk D Hanson, San Diego, CA (US);
Mark W Perona, San Diego, CA (US);
Assignee:
Iomega Corporation, Roy, UT (US);
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
318254 ; 318439 ; 318603 ; 318626 ;
Abstract
A motor control system employing a single Hall sensor 2 providing a position feedback signal to a control circuit 10 is disclosed. The control circuit includes a tach counter circuit 12, a ramp mode circuit 14, an interpolation circuit 16, and a commutation logic circuit 18. Drive signals are output to the motor windings by the commutation logic circuit 18. The control state defining the drive signals is advanced on the basis of the estimated rotor position. The estimate of the rotor position is determined by linearly interpolating between Hall signal transitions.