ClassID:

146169

F15B21/087 - CPC Classification

Classification description:

Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass; Servomotor systems incorporating electrically operated control means Control strategy, e.g. with block diagram

Recent Application in this class:
#1
20260117802
2026-04-30

INTERMEDIATE HYDRAULIC SYSTEM AND METHOD OF USE

#2
20260035883
2026-02-05

HYDRAULIC DRIVE DEVICE

#3
20260022712
2026-01-22

HYDRAULIC DRIVE DEVICE

#4
20260009408
2026-01-08

HYDRAULIC FORCE FIGHT MITIGATION

#5
20250198122
2025-06-19

Wheeled Construction Machine

#6
20250027518
2025-01-23

HYDRAULIC ACTUATOR AND METHOD FOR OPERATING

#7
20250003432
2025-01-02

METHOD AND PROCEDURE FOR REMOTE MANAGEMENT OF A COMPRESSED AIR DISTRIBUTION SYSTEM

#8
20240360850
2024-10-31

ACTUATOR DEADHEAD/STALL DETECTION IN A LOAD SENSE HYDRAULIC SYSTEM

#9
20240344297
2024-10-17

Work Machine

#10
20240337279
2024-10-10

System and method for controlling a hydraulic supply system on a mobile machine

#11
20240315155
2024-09-26

Implement descending stability control method and system and tractor

#12
20240301899
2024-09-12

System and Method for Controlling a Mobile Agricultural Machine Having a Hydraulic Supply System

#13
20240301659
2024-09-12

DRIVE CONTROL DEVICE FOR FLUID PRESSURE CYLINDER

#14
20240287763
2024-08-29

Work Machine

#15
20240200581
2024-06-20

Velocity and position compound control system for pump-valve dual-source driven hydraulic cylinder

#16
20240052597
2024-02-15

Hydraulic system for working machine

#17
20230400120
2023-12-14

Preventing control-induced oscillations of the position of a valve member in a valve with pneumatic actuator

#18
20230332631
2023-10-19

Hydraulic system

#19
20230304262
2023-09-28

Work Machine

#20
20230292670
2023-09-21

Baler connectable to a tractor for providing round bales and method for producing round bales

#21
20230265865
2023-08-24

HYDRAULIC DRIVE SYSTEM

#22
20230258205
2023-08-17

Pulse width modulated control of servo

#23
20230213045
2023-07-06

CONTROLLING BOOM OF WORK MACHINE

#24
20230184265
2023-06-15

Work machine

#25
20230167629
2023-06-01

Control architecture for prime mover stall prevention

#26
20230151829
2023-05-18

HYDRAULIC FORCE FIGHT MITIGATION

#27
20230134006
2023-05-04

SYSTEM AND METHOD OF OPERATING A MOBILE INDUSTRIAL MACHINE

#28
20230119892
2023-04-20

Hydraulic control system for a working machine

#29
20230085676
2023-03-23

Construction machine

#30
20220381005
2022-12-01

WORK MACHINE CONTROL SYSTEM, WORK MACHINE, WORK MACHINE CONTROL METHOD, AND WORK MACHINE CONTROL DEVICE

#31
20220298751
2022-09-22

Method of controlling a hydraulic actuator, a hydraulic actuator, a hydraulic system and a working machine

#32
20220235880
2022-07-28

Partial stroke tests for shutdown valves

#33
20220196044
2022-06-23

Electro-hydraulic servo actuator capable of implementing long-stroke and high-frequency loading, and control method

#34
20220196039
2022-06-23

Hydraulic system and a method for controlling a hydraulic system of a working machine

#35
20220186756
2022-06-16

Hydraulic system for a cyclically working molding machine and method for operation of such a hydraulic system

#36
20220144414
2022-05-12

Flight control system comprising a hydraulic servo actuator

#37
20220136534
2022-05-05

Pump/motor with integrated variator for use in hydraulic systems

#38
20220056932
2022-02-24

System and method for automatic calibration of actuators

#39
20210388856
2021-12-16

Setpoint identification on retrofit electric actuation

#40
20210372441
2021-12-02

Automatic selective control valve (SVC) configuration detection, and operation assignment, directionality confirmation, and calibration for towable implements towable by work vehicles

#41
20210363729
2021-11-25

Hydraulic hybrid system for a work machine and a method of controlling the hydraulic hybrid system

#42
20210341327
2021-11-04

Methods and apparatus for quantifying pneumatic volume usage via valve controllers

#43
20210332838
2021-10-28

Adaptive friction minimization for electrohydraulic actuators

#44
20210285470
2021-09-16

Automatic air bleeding system for hydraulics

#45
20210285466
2021-09-16

Redundant electrohydraulic positioning control system

#46
20210180623
2021-06-17

Work vehicle

#47
20210172514
2021-06-10

Flow valve control method and apparatus, and storage medium

#48
20210115951
2021-04-22

Performance enhancement of controllers for varying temperature conditions in hydraulic actuators

#49
20210112713
2021-04-22

Header suspension for pivoting header of combine harvester

#50
20210048047
2021-02-18

Compensating for orientation of a valve positioner on a valve assembly

#51
20210034082
2021-02-04

Pressure regulator

#52
20200399857
2020-12-24

Excavator and information processing device

#53
20200362889
2020-11-19

Control mapping for hydraulic machines

#54
20200337239
2020-10-29

Damped float response on an agricultural harvester

#55
20200291970
2020-09-17

Method to automatically detect parameter for pressure dynamics control

#56
20200277754
2020-09-03

Swing-back preventing apparatus

#57
20200221643
2020-07-16

Baler connectable to a tractor for providing round bales and method for producing round bales

#58
20200116171
2020-04-16

Compensating for orientation of a valve positioner on a valve assembly

#59
20200096955
2020-03-26

Motor control apparatus

#60
20200049174
2020-02-13

Control System for a Control Valve

#61
20200011451
2020-01-09

Partial stroke tests for shutdown valves

#62
20190390691
2019-12-26

Actuator of a process device having a controller configured to operate in a measured position feedback mode and a simulated position feedback mode

#63
20190376536
2019-12-12

Pump/motor with integrated variator for use in hydraulic systems

#64
20190376533
2019-12-12

Actuator limit controller

#65
20190373799
2019-12-12

Method for vibration damping for hydraulic lifting mechanisms of mobile working machines and hydraulic lifting mechanism having vibration damping

#66
20190352884
2019-11-21

Construction machine

#67
20190330823
2019-10-31

Work vehicle control system providing coordinated control of actuators

#68
20190327901
2019-10-31

Method for operating an agricultural roundbaler ejection flap

#69
20190322252
2019-10-24

Measurement of contact maintaining control valve current for a hydraulic actuator

#70
20190285191
2019-09-19

Valve system in an injection molding system

#71
20190219070
2019-07-18

Motor control device

#72
20190186106
2019-06-20

Work machine

#73
20190143540
2019-05-16

Actuator device and control method

#74
20190116718
2019-04-25

WORKING MACHINE LIFTING CONTROL DEVICE

#75
20190112786
2019-04-18

Pump control system of work machine

#76
20190093682
2019-03-28

Optimized method for controlling position and crossover pressure in a double acting actuator

#77
20190093681
2019-03-28

Application-based control of a valve disk

#78
20190032306
2019-01-31

Control system, work machine, and control method

#79
20190024678
2019-01-24

CONTROL DEVICE FOR FLUID PRESSURE ACTUATOR

#80
20190024677
2019-01-24

Load-dependent hydraulic fluid flow control system

#81
20190010966
2019-01-10

Intelligent boom control with rapid system cycling

#82
20180283420
2018-10-04

Control system for a control valve

#83
20180238025
2018-08-23

Work machine

#84
20180202467
2018-07-19

Hydraulic drive device and method for controlling the same

#85
20180195254
2018-07-12

Apparatus and method for controlling construction machine

#86
20180142445
2018-05-24

Electro-hydraulic feed delivery system

#87
20180135278
2018-05-17

Device and method for controlling work machine

#88
20180128607
2018-05-10

Method to automatically detect the area ratio of an actuator

#89
20180128292
2018-05-10

Control strategy for hydraulic actuator with a pair of independent metering valves

#90
20180128290
2018-05-10

Method to automatically detect parameter for pressure dynamics control

#91
20180087588
2018-03-29

Control device and control method

#92
20180044143
2018-02-15

Actuator control device and work vehicle

#93
20180043590
2018-02-15

Valve system in an injection molding system

#94
20180038395
2018-02-08

Electro-hydraulic machine with integrated sensor

#95
20180002896
2018-01-04

Drive control method of hydraulic actuator of construction machine

#96
20170364097
2017-12-21

Fluid metering valve

#97
20170356476
2017-12-14

ELECTRO HYDROSTATIC ACTUATORS

#98
20170276155
2017-09-28

Hydraulic drive system for work machine

#99
20170184139
2017-06-29

Method of controlling velocity of a hydraulic actuator in over-center linkage systems

#100
20170058487
2017-03-02

Construction machine

#101
20170029256
2017-02-02

Load dependent electronic valve actuator regulation and pressure compensation

#102
20170009428
2017-01-12

Hydraulic fluid energy regeneration device for work machine

#103
20160274594
2016-09-22

Positioner

#104
20160131162
2016-05-12

Hydraulic control system for controlling a moveable device

#105
20160069360
2016-03-10

Control arrangement of a hydraulic system and a method for controlling a hydraulic system

#106
20160061236
2016-03-03

Method for controlling hydraulic system of construction machinery

#107
20160040689
2016-02-11

Device and method for controlling hydraulic pump in construction machine

#108
20160037721
2016-02-11

Pressure control for hydraulically actuated agricultural headers

#109
20160010662
2016-01-14

Self-snubbing hydraulic actuation system

#110
20160002886
2016-01-07

Pilot pressure control system

#111
20150286205
2015-10-08

System and method for controlling a valve

#112
20150135693
2015-05-21

Engine control apparatus for work machine and engine control method thereof

#113
20140350731
2014-11-27

Driver self-tuning method using electro-hydraulic actuator system

#114
20140345988
2014-11-27

Method for optimizing the pressure setting accuracy

#115
20140331664
2014-11-13

Slewing type working machine

#116
20140260232
2014-09-18

Methods and systems for flow sharing in a hydraulic transformer system with multiple pumps

#117
20140123639
2014-05-08

Hydraulic drive system

#118
20140000352
2014-01-02

Method and device for monitoring a servovalve actuation system

#119
20130317647
2013-11-28

Control apparatus, control method, and control program for pneumatic artificial muscle drive mechanism

#120
20130289840
2013-10-31

Hydraulic control system for automatic transmission

#121
20130074486
2013-03-28

Multi-pump system with pump-flow diversion

#122
20130026123
2013-01-31

Crane control system

#123
20120323451
2012-12-20

Lift system implementing velocity-based feedforward control

#124
20120321425
2012-12-20

System implementing parallel lift for range of angles

#125
20120310489
2012-12-06

Pump overspeed protection method and machine using same

#126
20120279212
2012-11-08

CONTROL ARRANGEMENT

#127
20120249019
2012-10-04

Valve positioner with current allocating device

#128
20120235620
2012-09-20

Electrical actuator and method for controlling such an actuator

#129
20120216519
2012-08-30

Hydraulic control system having cylinder flow correction

#130
20120216518
2012-08-30

Hydraulic control system having cylinder stall strategy

#131
20120216517
2012-08-30

Hydraulic control system having cylinder stall strategy

#132
20120109385
2012-05-03

Hydraulic pressure control apparatus

#133
20110238264
2011-09-29

Method of controlling hybrid working machine and method of controlling pump output of hybrid working machine

#134
20110208363
2011-08-25

Method of controlling an electro-hydraulic actuator system having multiple actuators

#135
20110168011
2011-07-14

Device for controlling the stroke of an actuator

#136
20110146824
2011-06-23

CONTROL SYSTEM OF A SHIFT CYLINDER

#137
20110094595
2011-04-28

Method of operating a control valve assembly for a hydraulic system

#138
20110078508
2011-03-31

Control apparatus and control method of elastic body actuator as well as control program thereof

#139
20110060491
2011-03-10

Device for controlling hybrid construction machine

#140
20110014062
2011-01-20

Control device of hydraulically driven fan

#141
20110000203
2011-01-06

Hydraulic system having multiple actuators and an associated control method

#142
20100211229
2010-08-19

Fluid pressure control apparatus/process

#143
20100192562
2010-08-05

Control system and method for controlling at least two hydraulic consumers

#144
20100154403
2010-06-24

System and method for operating a variable displacement hydraulic pump

#145
20100154401
2010-06-24

Hydraulic control system having flow force compensation

#146
20100154400
2010-06-24

Hydraulic control system utilizing feed-forward control

#147
20100154399
2010-06-24

Method for recuperating potential energy during a lowering operation of a load

#148
20100121496
2010-05-13

Pneumatic actuator system and method

#149
20100083650
2010-04-08

Hydraulic circuit for operating a tool

#150
20100078234
2010-04-01

Hybrid electric vehicle traction motor driven power take-off control system

#151
20100036568
2010-02-11

Method for operating a working machine and a working machine with an improved ability to meet transient loads

#152
20100024411
2010-02-04

Hydraulic system having automated ride control activation

#153
20090319133
2009-12-24

Method for controlling a movement of a vehicle component

#154
20090272109
2009-11-05

Hydraulic system with compensation for kinematic position changes of machine members

#155
20090145120
2009-06-11

METHOD AND CIRCUIT ARRANGEMENT OF THE SUPPLY OF PRESSUE MEDIUM TO AT LEAST TWO HYDRAULIC CONSUMERS

#156
20090114298
2009-05-07

Valve control unit

#157
20090071144
2009-03-19

Actuator control system implementing adaptive flow control

#158
20090057040
2009-03-05

Hydraulic traveling vehicle and control method for hydraulic traveling vehicle

#159
20090056324
2009-03-05

Hydraulic control device of construction machinery

#160
20090055056
2009-02-26

Swing drive system for construction machine

#161
20080250783
2008-10-16

Flow continuity for multiple hydraulic circuits and associated method

#162
20080163750
2008-07-10

System and method for controlling actuator position

#163
20080155977
2008-07-03

Apparatus for easing impact on boom of excavator and method of controlling the same

#164
20080087163
2008-04-17

Drift compensation control method for a machine

#165
20080072588
2008-03-27

Control system for hydraulic construction machine

#166
20080034956
2008-02-14

Fluid pressure unit and fluid pressure unit control method

#167
20080034746
2008-02-14

Combiner valve control system and method

#168
20070239412
2007-10-11

Method and system for achieving force control in externally driven hydraulic cylinders

#169
20070204603
2007-09-06

Actuator control system and method

#170
20070199439
2007-08-30

Adjustable hydraulic metering system

#171
20070199438
2007-08-30

Control system and control method for fluid pressure actuator and fluid pressure machine

#172
20070120662
2007-05-31

Digital Hydraulic system

#173
20070101711
2007-05-10

Servo-motor controlled hydraulic press, hydraulic actuator, and methods of positioning various devices

#174
20070095059
2007-05-03

Hydraulic system having pressure compensated bypass

#175
20070074511
2007-04-05

Multi-pump control system and method

#176
20070044650
2007-03-01

Valve having a hysteretic filtered actuation command

#177
20070044464
2007-03-01

Combiner valve control system and method

#178
20070044463
2007-03-01

Hydraulic system having area controlled bypass

#179
20070038355
2007-02-15

Features of main control for a power machine

#180
20070006580
2007-01-11

Control system and method for supplying pressure means to at least two hydraulic consumers

#181
20060272325
2006-12-07

Control system for suppression of boom or arm oscillation

#182
20060230753
2006-10-19

Control arrangement and method for controlling at least two hydraulic consumers

#183
20060137337
2006-06-29

Fluid pump control device for wheel loaders

#184
20060117942
2006-06-08

Hydraulic control circuit and method thereof

#185
20060116783
2006-06-01

Method and system for torque/force control of hydraulic actuators

#186
20060099081
2006-05-11

Method and apparatus for controlling hydraulic pump for working machine of working vehicle

#187
20060064971
2006-03-30

Adaptive position determining system for hydraulic cylinder

#188
20060048508
2006-03-09

Oil pressure circuit for working machines

#189
20060021348
2006-02-02

Position control device for an electrical-fluid power drive and a method of positioning

#190
20050284144
2005-12-29

Conduit loss compensation for a distributed electrohydraulic system

#191
20050255967
2005-11-17

Method of automatically flushing debris from an electrically-operated hydraulic valve

#192
20050241304
2005-11-03

Method and a device for controlling a vehicle and a computer program for performing the method

#193
20050226732
2005-10-13

Method for compensating flow rate at neutral position of operation lever of construction equipment

#194
20050211936
2005-09-29

Electrohydraulic valve servomechanism with adaptive resistance estimator

#195
20050211312
2005-09-29

Hydraulic system control method using a differential pressure compensated flow coefficient

#196
20050207898
2005-09-22

Hydraulic cylinder suspension method

#197
20050204735
2005-09-22

Hydraulic control system for working machine

#198
20050175485
2005-08-11

Hydraulic driving system of construction machinery

#199
20050081519
2005-04-21

System for preventing swing wag for a work machine with a boom assembly

#200
20050001606
2005-01-06

Hybrid construction machine having auxiliary battery and control apparatus thereof