Invention Grant
- Patent Title: Position control apparatus
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Application No.: US16046213Application Date: 2018-07-26
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Publication No.: US10663942B2Publication Date: 2020-05-26
- Inventor: Hisashi Kondou , Tomohiro Shibata , Yuji Uchida , Takeshi Sakai
- Applicant: OKUMA Corporation
- Applicant Address: JP Niwa-Gun, Aichi
- Assignee: OKUMA CORPORATION
- Current Assignee: OKUMA CORPORATION
- Current Assignee Address: JP Niwa-Gun, Aichi
- Agency: Cantor Colburn LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@75bdb053
- Main IPC: G05B19/19
- IPC: G05B19/19 ; G05B19/416 ; G05B19/404

Abstract:
A position control apparatus includes an inversion detector which detects an inversion of a position command and generates an inversion detection signal, a deflection characteristic storage unit which stores a deflection characteristic representing an amount of deflection with respect to a torque command, and an inversion correction calculator which calculates an inversion correction amount. The inversion correction calculator stores a torque command immediately before the inversion, and calculates the inversion correction amount from a difference between an amount of deflection immediately before inversion in which the stored torque command is checked with the deflection characteristic, and an amount of deflection after the inversion in which a value obtained by inverting a sign of the stored torque command is checked with the deflection characteristic. A value obtained by adding the inversion correction amount to the position command value is used for position error calculation.
Public/Granted literature
- US20190033818A1 POSITION CONTROL APPARATUS Public/Granted day:2019-01-31
Information query
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