Servo control device with coarse and fine movement

US10061277B2 · kind B2 · utility

Assignee

• Mitsubishi Electric Corporation · JP

Inventors

• Kotaro Nagaoka · Tokyo, JP
• Teruaki Fukuoka · Tokyo, JP
• Takahiro Nakai · Tokyo, JP

Key dates

• Filing date: Dec 20, 2012
• Grant date: Aug 28, 2018
• Expiry date: May 6, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B2219/45207
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A servo control device includes a coarse-movement reference model unit calculating a coarse-movement model position by performing predetermined filter computation based on a position command; a coarse-movement follow-up control unit controlling the coarse-movement shaft motor such that a coarse-movement-shaft motor position follows the coarse-movement model position based on the coarse-movement-shaft motor position provided from the coarse-movement shaft motor and the coarse-movement model position; an integrated reference model unit calculating an integrated model position by performing predetermined filter computation based on a position command; and a fine-movement follow-up control unit controlling the fine-movement shaft motor such that a fine-movement-shaft motor position follows a fine-movement model position based on the fine-movement-shaft motor position provided from the fine-movement shaft motor and the fine-movement model position obtained from the integrated model position and the coarse-movement model position.