Title:
STEPPING MOTOR DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/065141
Kind Code:
A1
Abstract:
A stepping motor drive device that drives a stepping motor in response to a position/angle command comprises a current detector that detects a phase current, an inverter that energizes a winding, and a control unit that controls the inverter. The control unit includes: a phase current coordinate converter that converts the phase current to generate a dp axis detection current and a qp axis detection current; a torque correction command generator that generates a torque correction command that follows a torque correction waveform that suppresses torque fluctuations; a torque correction command coordinate converter that converts the torque correction command into a dp axis component and a qp axis component to generate a dp axis torque correction component and a qp axis torque correction component; an adder that superimposes the dp axis torque correction component and the qp axis torque correction component on a dp axis basic current command and a qp axis basic current command to generate a dp axis current command and a qp axis current command; and a control command generator that compares the dp axis current command and the qp axis current command with the dp axis detection current and the qp axis detection current to give a control command to the inverter.
Inventors:
KOZAKAI KEI (JP)
MORIMOTO MAKOTO (JP)
MORIMOTO MAKOTO (JP)
Application Number:
PCT/JP2021/033813
Publication Date:
March 31, 2022
Filing Date:
September 14, 2021
Export Citation:
Assignee:
ORIENTAL MOTOR CO LTD (JP)
International Classes:
H02P8/12
Foreign References:
| JP3503894B2 | 2004-03-08 | |||
| JP2010057217A | 2010-03-11 | |||
| CN109450303A | 2019-03-08 | |||
| JP2014045592A | 2014-03-13 | |||
| JPH0433560A | 1992-02-04 | |||
| JP2005210786A | 2005-08-04 | |||
| JP2020159830A | 2020-10-01 |
Other References:
HIDETAKA TAKEMURA ET AL.: "Vibration Suppression of Stepping Motor Driven System Using Cogging Torque Compensator", TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS SERIES C, vol. 78, no. 785, 2012, pages 74 - 81
Attorney, Agent or Firm:
AI ASSOCIATION OF PATENT AND TRADEMARK ATTORNEYS (JP)
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