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Matches 201 - 250 out of 3,876

Document Document Title
WO/1986/002901A1
An adjustment device comprises a control slide (13) proportionally adjusted as a function of the output signals from a comparator member (53). An integral regulator (56) cooperates to regulate the control slide (13) as a function of the ...  
WO/1986/002414A1
A system for monitoring the position of a machine component, whose drive is provided with an electrohydraulic drive system which, in order to control the forward and backward movements of this machine component, comprises a follow-up adj...  
WO/1985/005601A1
Le boîtier (10) d'un servofrein possède un col de boîtier (30) à partir duquel fait saillie axialement vers l'extérieur un prolongement tubulaire (8). A l'intérieur du boîtier (10) et de son prolongement tubulaire (80) sont dispos...  
WO/1985/003573A1
A load dynamic compensation circuit (70) for a servohydraulic control system for fixtures (10) and specimens (15) being tested operating in various degrees of freedom, for example in an environment to simulate earthquakes to test buildin...  
WO/1984/004784A1
A fluid servo actuator comprises an input member (30) which can be rotated by drive means (24), (25) and which is provided with tubes (52), (44) capable of supplying and discharging hydraulic fluid and grooves (53(a), 53(b), 53(c), 53(d)...  
WO/1984/001409A1
A pneumatic actuator which allows precise control as regard position, speed and acceleration. Piston (4) and cylinder (1) define a chamber (7) and inlet and exhaust valves (13 and 18) control the flow of gas into and out of the chamber u...  
WO/1982/004292A1
A shearing tool comprises a reference handle (10), a reference blade (14) rigidly connected to the reference handle (10), a control handle (12) and a slave blade (16) mounted at a common pivot assembly to the junction of the reference ha...  
WO/1982/000862A1
Hydraulic fluid powered actuation system for controlling the position of a control surface (162) of an aircraft in response to a plurality of redundant control signals. The system comprises a tandem actuator (10) adapted to be mounted in...  
WO/1981/002553A1
A hydraulic servo steering system (10) for vehicles has a steering valve (24) for directing fluid to steering cylinders (16, 17) in response to pilot fluid directed to one end of the steering valve (24) from a hand metering unit (31). A ...  
WO/1981/002185A1
An electrohydraulic set device including as an output set element a piston (26), which is operable by a hydraulic pressure against the action of return force. The hydraulic pressure is led to the working side of the piston via a valve pa...  
WO/1981/000893A1
A bidirectional, multiple speed hydraulic actuator, including a differential piston (10, 24, 26). First and second ports (28, 30) are respectively in fluid communication with opposite sides of the piston and there is provided a pressure ...  
WO/1981/000601A1
An electronic compensation circuit for a pneumatic load bearing bellows system closed on position, in which a servo valve provides pressure to the bellows to actuate the top of the bellows to move to a predetermined position in response ...  
JP2019190542A
[Subject] In a speed regulating device of an actuator which moves a subject with target speed by making fluid pressure, such as air pressure, into driving energy, By carrying out feedback control of the speed of an actuator so that it ma...  
JP6595883B2  
JP6592340B2  
JP6576841B2  
JP2019112044A
To provide systems for compensating for force fighting in multi-actuator systems.A system 300 includes adaptive feedforward (FF) controllers 310 and 320, and optimal gain feedback regulators 312 and 322. The feedforward controller 310 an...  
JP6542052B2  
JP2019031842A
To provide a shovel on which a more compact control valve is mounted.The shovel according to the embodiments of the present invention comprises a lower traveling body 1, a revolving superstructure 3 mounted on the lower traveling body 1 ...  
JP2018162853A
To provide a control method for flat valve and a control system for flat valve that prolong the lifetime of a flat valve for controlling the liquid level in a device by adjusting transportation of a fluid by suppressing wear, damage, etc...  
JP6404842B2  
JP6328034B2  
JP6295222B2  
JP6295220B2  
JP6295215B2  
JP6295221B2  
JP2017227247A
To provide a cylinder control device capable of preventing the chatter of a fluid pressure cylinder without inviting the deterioration of control responsiveness.In order to achieve the aforementioned object, a cylinder control device 1 o...  
JP6238514B2  
JP2017194122A
To realize a lower cost system capable of collecting information about environment of an adjuster valve and transmitting it efficiently to a host device.A positioner 1 of this invention comprises an electric-air converting part 13 for su...  
JP2017174073A
To provide a positioner capable of safely and efficiently performing a PST of an adjustment valve.A positioner 100 includes: an electro-pneumatic conversion part 11 for converting an inputted electrical signal MV into an air signal and c...  
JP2017141884A
To provide a servo cylinder system capable of making uniform and maintaining a position control performance by improving responsiveness when starting an air cylinder.In a servo cylinder system 1 comprising an air cylinder 3, a servo valv...  
JP2017134563A
To prevent a malfunction caused by lightning surge, to eliminate the need for maintenance, and to allow automatic return to a normal mode from an emergency cutoff mode.A positioner comprises a normal range stability determination unit 7 ...  
JP2017129947A
To surely bring a control valve into a fail-safe state with respect to a short mode resulted from accidental failure of an electronic component or the like.A current monitoring circuit 6 is provided to monitor a value of currents Ic flow...  
JP6144370B2  
JP6144666B2  
JP2017096303A
To increase the degree of freedom of design of an electric circuit in a positioner while satisfying requirements for an essential safe explosion-proof structure.A positioner 1 has an air circuit 11 which includes a magnetic generation pa...  
JP2017082940A
To suppress increase in manufacturing cost and power consumption of a positioner with a built-in pressure sensor and furthermore to enable malfunction of the pressure sensor to be detected.A positioner according to the present invention ...  
JP6088455B2  
JP6088456B2  
JP6081232B2  
JP2017020632A
To provide a positioner capable of stably controlling an adjustment valve even under an environment of large vibration.A positioner (1) has a displacement amount detector (11) detecting a displacement amount of a valve shaft of an adjust...  
JP2017020631A
To provide a positioner capable of stably controlling an adjustment valve even under an environment of large vibration.A positioner 1 has a displacement amount detector 11 detecting a displacement amount of a valve shaft of an adjustment...  
JP6042690B2  
JP6036420B2  
JP6026160B2  
JP2016173159A
To realize stable fluid control by suppressing over shoot and hunting of a valve opening and generation of fluttering even when an ambient temperature largely changes.A first table TA in which a relationship between a sliding resistance ...  
JP2016173127A
To eliminate factors of troubles in valve opening control and a diagnostic function by effectively utilizing a pressure sensor not in use, and suppressing fluctuation of a pressure measurement value caused by change of atmospheric pressu...  
JP2016173160A
To select and set an optimal control parameter, even when an operation time of an actuator fluctuates by supply air pressure or friction.With a first correction value table TC in which a correction value corresponding to an operation tim...  
JP2016156392A
To prevent a malfunction caused by lightning surge, to eliminate the need of maintenance and to automatically recover an original state.A positioner 201 comprises: a surge protection circuit 7 for protecting an internal circuit of the po...  
JP5981639B2  

Matches 201 - 250 out of 3,876