Invention Grant
US09077276B2 Motor control method and motor control apparatus for dental handpiece
有权
牙科手机电机控制方法及电机控制装置
- Patent Title: Motor control method and motor control apparatus for dental handpiece
- Patent Title (中): 牙科手机电机控制方法及电机控制装置
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Application No.: US13376447Application Date: 2011-05-18
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Publication No.: US09077276B2Publication Date: 2015-07-07
- Inventor: Hideki Okamoto
- Applicant: Hideki Okamoto
- Applicant Address: JP Tochigi
- Assignee: NAKANISHI INC.
- Current Assignee: NAKANISHI INC.
- Current Assignee Address: JP Tochigi
- Agency: Pearne & Gordon LLP
- Priority: JP2010-151846 20100702
- International Application: PCT/JP2011/002763 WO 20110518
- International Announcement: WO2012/001869 WO 20120105
- Main IPC: H02P29/02
- IPC: H02P29/02 ; H02P7/06 ; A61C1/06 ; A61C1/00 ; A61C1/18 ; H02P7/18 ; H02P7/288
Abstract:
The present invention relates to a motor control method for a dental handpiece provided with a motor that rotationally drives a cutting tool. The control method includes a step A of limiting the motor current to a first limit current I1 when the load torque applied to the cutting tool exceeds a preset limit torque value, and a step B of controlling the motor current to be equal to or lower than a second limit current, which is lower than the first limit current, when it is detected that the motor stops rotating.
Public/Granted literature
- US20130099710A1 MOTOR CONTROL METHOD AND MOTOR CONTROL APPARATUS FOR DENTAL HANDPIECE Public/Granted day:2013-04-25
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