LexDanaLexDanabeta
Inventor

Yasusuke Iwashita

Inventor
Yamanashi, JP

Overview

123→
Patents
1990–2019
Patent span
Physics
Primary field (CPC G)

Patents· 123 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G05Bprimary
G05BControl or regulating systems in general43%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters24%
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material7%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems6%
B23QDetails, components, or accessories for machine tools, e.g. arrangements for copying or controlling2%
G01RMeasuring electric variables2%
G05DSystems for controlling or regulating non-electric variables2%
H02JElectric power networks2%
B30BPresses in general2%
H02HEmergency protective circuit arrangements2%
PatentTitleYear
10,247,301Servo control system with position compensation function for driven member20199,709,975'Control system of servo motors improving processing precision of plurality of axes'20179,557,731'Control device of gear processing machine'20179,448,545'Servo control device for performing correction based on amount of stretch or contraction of ball screw'20169,048,733'Motor driving device having reactive current instruction generating unit'20159,018,886'Motor control system which corrects backlash'20158,988,032'Numerical controller having display function for trajectory of tool'20158,924,004'Numerical controller for making positioning completion check'20148,901,866'Motor drive apparatus equipped with energy storage unit'20148,903,518'Motor control apparatus equipped with dead-zone processing unit'20148,896,255'Servo controller having function for correcting amount of expansion/contraction of ball screw'20148,786,239'Motor drive PWM rectifier having modulation scheme selector'20148,779,704'Motor control apparatus equipped with delta-sigma modulation AD converter'20148,754,599'Motor control apparatus equipped with delta-sigma modulation AD converter'20148,754,601'Controller and control method of synchronous motor with amplifier protection function'20148,736,217'Servo motor control device for controlling servo motor configured to drive feed axis of machine tool'20148,716,965'Synchronous motor control device for controlling synchronous motor to carry out power regenerative operation and stop synchronous motor at the time of power failure'20148,680,805'Control device that drives one driven object by two motors'20148,664,897'Motor drive apparatus having power failure detection unit for determining presence or absence of power failure'20148,649,130'Motor driving apparatus having fault diagnostic function'20148,633,663'Control device that detects whether or not irreversible demagnetization has occurred in permanent magnet of permanent magnet synchronous motor'20148,624,538'Motor driving apparatus having function of dynamically switching converter operation mode of AC/DC converter'20148,483,865'Numerical controller with tool trajectory display function'20138,436,565'Motor controller for tandem control'20138,432,120'Tool path display apparatus with deceleration factor identification means for machine tool'20138,415,906'Motor driving apparatus'20138,410,744'Motor driving apparatus'20138,384,335'Motor driving apparatus having DC link voltage regulating function'20138,350,713'Numerical controller having a function for determining machine abnormality from signals obtained from a plurality of sensors'20138,283,880'Motor drive device with function of switching to power regenerative operation mode'20128,278,849'Controller for calculating electric power consumption of industrial machine'20128,242,734'Controller of spindle provided with encoder'20128,190,287'Tool vector display apparatus for a machine tool with rotational axes'20128,143,836'Motor controller'20128,058,827'Motor control apparatus having a function to calculate amount of cogging torque compensation'20118,054,015'Motor drive apparatus equipped with dynamic braking circuit fault detection capability'20118,054,012'Motor driving apparatus'20118,040,097'Servo motor drive control device for calculating consumed electric energy and regenerated electric energy'20118,030,878'Motor driving device having power failure detection function'20118,026,689'Control device for machine tool'20118,018,192'3D-trajectory display device for machine tool'20118,018,747'PWM rectifier'20118,006,538'Control device for servo die cushion'20117,956,568'Servo motor controller'20117,932,689'Motor drive system for driving motor provided with a plurality of windings'20117,923,956'Control device for servo die cushion'20117,915,848'Servo control apparatus that performs dual-position feedback control'20117,868,569'Motor driving apparatus'20117,863,853'Electric motor control device'20117,845,205'Die cushion controller'20107,847,502'Device and method for controlling machine tool'20107,843,152'Motor control apparatus'20107,791,305'Control apparatus of servo motor'20107,757,526'Method for changing force control gain and die cushion control apparatus'20107,719,218'Motor control apparatus'20107,685,860'Control device for press machine'20107,656,106'Servo controller'20107,657,356'Controller'20107,631,528'Die cushion mechanism, and apparatus and method for controlling the same'20097,619,384'Controller for die cushion mechanism'20097,531,981'Controller for servomotor'20097,506,530'Die cushion mechanism, and device and method for controlling the same'20097,498,761'Motor control method and motor control apparatus'20097,479,750'Controller for electric motor'20097,461,530'Die cushion mechanism, and apparatus and method for controlling the same'20087,446,497'Fixed-position stop control apparatus for rotation shaft'20087,421,878'Control device for servo die cushion'20087,401,492'Control device for a die cushion mechanism'20087,392,684'Control system for servo die cushion'20087,368,887'Servo control device and method of adjusting servo system'20087,360,391'Control device for servo die cushion'20087,348,745'Controller'20087,293,447'Control device for die cushion mechanism'20077,248,014'Motor control system'20077,205,743'Controller for machine effecting end'20077,183,739'Synchronous control device'20077,170,256'Motor control device'20077,084,596'Servomotor driving controller'20067,085,620'Servo controller'20067,049,775'Servo motor control unit for press-forming machine'20067,030,585'Controller'20066,879,130'Controller for induction motor'20056,809,493'Servo controller'20046,806,674'Control device for driving and controlling a servomotor'20046,741,057'Servo controller for preventing downward displacement in gravitating axis'20046,566,836'Controller for controlling servo motor and spindle motor'20036,563,283'Motor control device'20036,310,457'Servomotor controller'20016,211,636'Pressing machine and motor torque control method in pressing machine'20016,177,774'Motor controller based on PWM system'20016,163,130'Injection molding machine'20006,122,998'Force control method for a bar feeder of a lathe'20006,057,661'Method of detecting an abnormal load on a servomotor and controlling the same in such an abnormal condition'20006,020,706'Method of and apparatus for controlling a servomotor'20005,986,422'Control mode changing over method for servo control system'19995,955,863'Electric current control method for a servomotor'19995,936,369'Method of estimating disturbance load on servomotor'19995,877,603'Electric current control method for a servomotor'19995,734,242'Force control method based on disturbance load estimation'19985,726,545'Current controlling method for servo motor'19985,691,616'Fully-closed-loop servomotor control system'19975,656,906'Automatic adjusting method of servo parameters and automatic adjusting apparatus of the same'19975,654,619'Method of feedforward control for servomotor'19975,602,347'Tool life control method based on disturbance load torque of motor'19975,598,077'Control apparatus and a control method for a servomotor'19975,517,100'Method of controlling a servo motor'19965,467,001'Control method for an alternating current motor'19955,448,145'Feedforward control method for a servomotor'19955,406,182'Method for controlling a servomotor'19955,374,882'Method of controlling servomotor'19945,367,238'Backlash acceleration control method'19945,343,132'Backlash acceleration control method'19945,311,110'Feedforward control method for servomotors'19945,220,265'Discrete-type repetitive control method and an apparatus therefor'19935,204,602'Servomotor control method'19935,157,597'Method of detecting oscillation of a servo system and automatically adjusting speed loop gain thereof'19925,107,193'Feedforward control apparatus for a servomotor'19925,093,609'Servomotor control method'19925,091,684'Servo-control apparatus'19925,073,746'Speed control method for servomotors'19915,015,935'Servo-control apparatus'19914,956,593'Servo motor controlling method'19904,950,967'Servomotor control apparatus'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–2013Patents assigned to FANUC LTD (93)· patent assignee history
1990–2001Based in Oshino-mura, JP· patent location history
1990–2015Based in Minamitsuru-gun, JP· patent location history
1991–2019Based in Yamanashi, JP· patent location history
2004Based in Yamanshi, JP· patent location history
2006–2011Based in Fujiyoshida, JP· patent location history
2011–2019Patents assigned to FANUC CORP (30)· patent assignee history
2011–2017Patents assigned to IWASHITA YASUSUKE (24)· patent assignee history
2011–2017Patents assigned to OKITA TADASHI (8)· patent assignee history
2012–2014Patents assigned to HORIKOSHI SHINICHI (7)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
FANUC LTD931990–2013
FANUC CORP302011–2019
IWASHITA YASUSUKEself242011–2017
OKITA TADASHI82011–2017
HORIKOSHI SHINICHI72012–2014
Locations
LocationPatentsSpan
Yamanashi, JP591991–2019
Oshino-mura, JP231990–2001
Minamitsuru-gun, JP201990–2015
Fujiyoshida, JP202006–2011
Yamanshi, JP12004