Brushless motor control method and brushless motor control device and electric power steering device
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United States of America Patent
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Sep 27, 2016
Grant Date -
Nov 5, 2015
app pub date -
Dec 9, 2013
filing date -
Dec 17, 2012
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Abstract
A control device 50 that drives and controls a brushless motor 3 of a four-pole 24-slot configuration includes: a base current calculation section 52 that calculates fundamental-wave current indicating a winding current value associated with maximum torque control; a correction component calculation section 59 that calculates 12th-order first higher harmonic wave component B sin 12(θ+β) to cancel a torque ripple of magnet torque, and 12th-order second higher harmonic wave component A sin 12(θ+α) to cancel a torque ripple of reluctance torque, based on a phase current value detected by a current sensor 64; a correction map 58 in which relation between phase current and parameters A, B, α, and β of the both higher harmonic wave components is stored; and a current correction section 60 that corrects supply current by superimposing each 12th-order higher harmonic wave component on the fundamental-wave current in order to create current command values Id′ and Iq′.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- MITSUBA CORPORATION
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Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Mitsuoka, Keisuke | Gunma, JP | 2 | 24 |
Okubo, Masayuki | Gunma, JP | 25 | 241 |
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