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JP7299184B2 |
To provide a fluid pressure drive device for driving and controlling an actuator by fluid pressure and a method for controlling the same which can drive and control at high speed and with high reliability and has high freedom in design o...
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JP7211759B2 |
Systems for compensating for force fighting in multi-actuator systems are provided. A drive controller unit comprises a first feedforward controller in communication with a first actuator and configured to receive a drive command signal....
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JP2022090459A |
To provide a technique for enabling more stable positioning control.A control calculation device performs a calculation of compensating for a volume change amount of each pressure chamber 16A, 16B caused by a positional change of a press...
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JP6972607B2 |
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...
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JP2021173352A |
To provide a flow passage switching mechanism 7 capable of easily identifying "auto" and "manual" states.The present invention relates to the flow passage switching mechanism 7 comprising a valve body 56 which is accommodated in a valve ...
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JP2021162146A |
To provide a control device which can reduce the delay of settling time caused by FF compensation.An air actuator control device which controls an air actuator which drives based on the air supplied through piping includes: a notch filte...
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JP2021128525A |
To allow stable start up even when a power supply is limited.A main circuit 102 is formed on a first surface 131 on a circuit board 101. An electric element 103 is formed on the side of a second surface 132 opposite to the first surface ...
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JP2021523317A |
A control system for turbine valves is provided. The turbine valve has a first coil and a second coil for controlling or detecting the movement of the mechanical valve positioner. Two valve positioners are provided, and each valve positi...
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JP6896484B2 |
To provide a position control device, etc. capable of improving accuracy of a minute displacement of a piston position of a hydraulic cylinder.A position control device comprises a hydraulic oil supply part 1 for supplying hydraulic oil ...
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JP6858083B2 |
In a control valve control device and a control valve adjustment method, provided are: an LVDT voltage processing unit (33) and an LVDT voltage detection unit (32) serving as a valve opening detection unit for detecting the degree of ope...
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JP6836341B2 |
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...
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JP6727641B1 |
A unit body (10) having a first end portion (61a) and a second end portion (61b), a first valve portion (20R), a second valve portion (20L), and a first valve portion (20R). The first seal member (22) that opens and closes, the second se...
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JP6695664B2 |
Apparatus for providing mechanical feedback of a position of an actuator to a controller in a high vibration environment. The apparatus includes a member that contacts a cam surface of the actuator such that movement of the actuator and ...
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JP6671202B2 |
A positioner according to the present invention includes: an electro-pneumatic converter that converts an input electric signal into a pneumatic signal and controls the valve opening of a regulating valve by driving an operational unit i...
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JP2019190542A |
To enable speed of an actuator to be maintained at a target speed irrespective of the presence of an external variation factor by feedback-controlling the speed of the actuator so as to reach the target speed, in a speed control device o...
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JP6595883B2 |
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JP6592340B2 |
The positioner having an air circuit including magnetism generating portions producing magnetism based on a current in accordance with a difference between a valve opening setpoint of a regulator valve and a measured value for the valve ...
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JP6576841B2 |
The positioner of the present invention can reliably change a regulating valve to a fail-safe state for a short-circuit mode due to an accidental failure or the like of an electronic device. The positioner is provided with a current moni...
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JP6542052B2 |
A positioner (1) includes: a displacement amount detector (11) that outputs a pair of detection signals; an interconnection board (15) that includes an interconnection layer (L1) which is disposed between two insulating layers (100, 101)...
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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 ...
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JP6404842B2 |
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JP6328034B2 |
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JP6295222B2 |
[Problem] To enable the optimum control parameters to be selected and set even when the operation time of the setting/operating device changes due to a supply air pressure or friction. [Means for Resolution] The measured operation time S...
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JP6295220B2 |
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JP6295215B2 |
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JP6295221B2 |
[Problem] To achieve stable fluid control by suppressing occurrence of overshooting, hunting, and fluctuation of the valve opening even when the ambient temperature greatly changes. [Means for Resolution] A first table TA for defining th...
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JP6238514B2 |
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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...
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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 ...
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JP6144370B2 |
Provided is a double nozzle type positioner, which includes a flapper (1), a first nozzle (2) and a second nozzle (3) disposed at both sides based on the flapper (1), a first orifice (4) configured to maintain a constant pressure of the ...
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JP6144666B2 |
The present invention discloses a machine-accessible medium having instructions stored thereon that, when executed, cause a machine to receive a control signal and a feedback signal as well as to calculate from the control signal and the...
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JP6088455B2 |
A positioner is provided with a control calculating portion (1) including a first calculating portion (1-1) and a second calculating portion (1-2). The first calculating portion (1-1), a valve opening detecting portion (4), and a first p...
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JP6088456B2 |
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JP6081232B2 |
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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...
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JP6042690B2 |
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JP6036420B2 |
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JP6026160B2 |
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JP5981639B2 |
A fluid power control system for load handling mobile equipment includes a pair of hydraulic actuators for moving respective cooperating load-engaging members selectively toward or away from each other, or in a common direction, at respe...
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JP5981960B2 |
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JP5953261B2 |
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JP5934527B2 |
A parameter acquiring device for acquiring parameters for a control valve has a controlling valve operating unit, a valve opening signal acquiring unit and a parameter calculator. The controlling valve operating unit operates a controlli...
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JP5927879B2 |
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JP2016037218A |
To prevent operation of a control handle from becoming heavy even in an idling state of an engine in a torque generator for assisting steering operation of front wheels.A torque generator 26 comprises: an input shaft 27; an output shaft ...
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JP2016038052A |
To materialize good assemblability of a torque generator configured in such a manner that a power of a hydraulic motor is reduced by a gear in its speed and added to an output shaft.The torque generator includes case 1 for supporting a s...
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JP5886621B2 |
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JP5867715B2 |
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JP5843558B2 |
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JP5820398B2 |
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JP5812826B2 |
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