Inventor
TOYOZAWA YUKIO
JP38 patents
⚠️ This page may combine multiple inventors who share the name “TOYOZAWA YUKIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FANUC LTD
24 patentsUS5646495AJul 8, 1997
Tandem control method based on a digital servomechanism
FANUC LTD55 citations96
US7498761B2Mar 3, 2009
Motor control method and motor control apparatus
FANUC LTD26 citations93
US7205743B2Apr 17, 2007
Controller for machine effecting end
FANUC LTD23 citations93
US7071651B2Jul 4, 2006
Position-of-magnetic-pole detecting device and method
FANUC LTD22 citations93
US6859007B2Feb 22, 2005
Servo motor drive control device
FANUC LTD20 citations93
US6823235B2Nov 23, 2004
Controller for machining gears
FANUC LTD22 citations93
US6534944B2Mar 18, 2003
Servo controller
FANUC LTD28 citations93
US6445154B1Sep 3, 2002
Method for detecting synchronous motor rotor magnetic pole position
FANUC LTD35 citations93
US5963007AOct 5, 1999
Current control method for an AC servomotor
FANUC LTD37 citations93
US7656106B2Feb 2, 2010
Servo controller
FANUC LTD32 citations92
US7902780B2Mar 8, 2011
Inertia estimating controller and control system
FANUC LTD13 citations84
US7808199B2Oct 5, 2010
Control apparatus
FANUC LTD10 citations84
US7187148B2Mar 6, 2007
Controller
FANUC LTD14 citations84
US7170283B2Jan 30, 2007
Device for detecting a position of a magnetic pole
FANUC LTD14 citations84
US6903527B2Jun 7, 2005
Servo controller
FANUC LTD18 citations84
US7293447B2Nov 13, 2007
Control device for die cushion mechanism
FANUC LTD8 citations74
US7215089B2May 8, 2007
Threading/tapping control apparatus
FANUC LTD7 citations74
US4623831ANov 18, 1986
Rotor position sensing apparatus for motors
FANUC LTD15 citations74
US4521724AJun 4, 1985
Apparatus for processing energy regenerated by an AC motor
FANUC LTD12 citations74
US7915848B2Mar 29, 2011
Servo control apparatus that performs dual-position feedback control
FANUC LTD5 citations63
US7479750B2Jan 20, 2009
Controller for electric motor
FANUC LTD6 citations63
US5572018ANov 5, 1996
Method and apparatus to detect absolute position using encoder having a counter clear signal
FANUC LTD5 citations63
US4794628ADec 27, 1988
Counter circuit with mislatching prevention
FANUC LTD4 citations63
US7932689B2Apr 26, 2011
Motor drive system for driving motor provided with a plurality of windings
FANUC LTD0 citations42
OKITA TADASHI
6 patentsUS8305016B2Nov 6, 2012
Control device with learning function for electric motors
OKITA TADASHI10 citations84
US8232758B2Jul 31, 2012
Controller of electric motor having function of estimating inertia and friction simultaneously
OKITA TADASHI7 citations84
US8098038B2Jan 17, 2012
Servomotor control system enabling high-speed oscillating motion to be highly precise
OKITA TADASHI6 citations73
US9008821B2Apr 14, 2015
Servo control system capable of improving processing accuracy
OKITA TADASHI3 citations62
US8067918B2Nov 29, 2011
Servomotor controller for controlling periodic reciprocation
OKITA TADASHI3 citations62
US8669727B2Mar 11, 2014
Detection device for detecting magnetic pole position of synchronous motor, and control apparatus equipped therewith
OKITA TADASHI0 citations41
FANUC CORP
5 patentsUS9331618B2May 3, 2016
Magnetic pole position detector for synchronous motor
FANUC CORP7 citations84
US11003168B2May 11, 2021
Controller for gear cutting machine
FANUC CORP0 citations62
US10166642B2Jan 1, 2019
Drive apparatus comprising mechanical vibration suppression function, and system comprising mechanical vibration suppression function
FANUC CORP0 citations42
US9720225B2Aug 1, 2017
Processing system with galvano scanner capable of high speed laser scanning
FANUC CORP0 citations42
US9709975B2Jul 18, 2017
Control system of servo motors improving processing precision of plurality of axes
FANUC CORP0 citations42