Title:
METHOD FOR DRIVING SENSORLESS MOTOR
Document Type and Number:
WIPO Patent Application WO/2018/146957
Kind Code:
A1
Abstract:
The present invention addresses the problem of proposing a method for driving a sensorless motor, wherein the method is different from a conventional rotor position estimation method according to a time axis and performs rotor position estimation according to an angle axis, thus making it possible for excitation switching to always be achieved at an optimal angle in response to a change in speed. According to the present invention, an MCU (5) starts excitation of a coil at an excitation interval starting point, measures an induced voltage component generated in the coil by a certain period of energization, integrates the voltage component, and sets an excitation interval ending position when the integrated value reaches zero. In addition, the motor is continuously rotated by repeating the same integration operation by switching to an excitation pattern in the next excitation interval.
Inventors:
YAMAMOTO KIYOSHI (JP)
Application Number:
PCT/JP2017/046181
Publication Date:
August 16, 2018
Filing Date:
December 22, 2017
Export Citation:
Assignee:
HOKUTO CONTROL CO LTD (JP)
International Classes:
H02P6/182
Foreign References:
| JP2006115599A | 2006-04-27 | |||
| JP2004166500A | 2004-06-10 | |||
| JP2006034049A | 2006-02-02 | |||
| US20130033212A1 | 2013-02-07 | |||
| JP2008141828A | 2008-06-19 | |||
| JP2000184775A | 2000-06-30 |
Other References:
See also references of EP 3540933A4
Attorney, Agent or Firm:
WATANUKI PATENT SERVICE BUREAU (JP)
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