04525657 is referenced by 29 patents and cites 8 patents.

In an electronic commutated motor, ripple of driving torque is perfectly compensated into uniform torque by controlling stator current; therein mechanical 360.degree. angle of rotation of the rotor magnet is divided into e.g. 12 partitioned ranges (of 30.degree.), said compensation being made by repeatedly reading out the same compensation data for the 30.degree. range by utilizing an address counter which is reset at each beginning of said partitioned ranges.

Title
Torque ripple compensation circuit for a brushless D.C. motor
Application Number
6/587252
Publication Number
4525657
Application Date
March 7, 1984
Publication Date
June 25, 1985
Inventor
Kuniichi Ozawa
Hirakata
JP
Yasuhiro Gotoh
Kadoma
JP
Hiromi Nakase
Nara
JP
Agent
Cushman Darby & Cushman
Assignee
Matsushita Electric Industrial
JP
IPC
H02P 6/02
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