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Matches 301 - 350 out of 3,875

Document Document Title
JP5319759B2
The invention relates to a method for determining the dead zone of a proportional control valve (8) used for controlling an actuator of a rock drilling device, the method comprising controlling the control valve (8) with an electric P co...  
JP2013189997A
To obtain hysteresis, intercepts and other parameters all together by only one operation achieving a gain of input and output characteristics.An EPM operation signal (control signal) Mv is changed in a specific order, and a data pair of ...  
JP5284539B2  
JP5286365B2  
JP5268357B2  
JP2013160242A
To provide a method and a device for controlling a hydraulic servo which can model a hydraulic cylinder, hardly generating an error, and can control the hydraulic force to a target value.A hydraulic cylinder 10 is modeled by defining the...  
JP2013133847A
To provide a drive system capable of obtaining high energy efficiency while suppressing an installation cost rise by using an existing installation to a maximum extent and also reliably maintaining a stopped state of a fluid cylinder eve...  
JP2013130237A
To easily detect fixation of a rotary shaft of an angle sensor.A cable-like pressure-sensitive sensor 28 is arranged on the other sidewall (upper sidewall) 23a2 of a long hole 23a of a feedback lever 23. A pin pressing spring 26 for brin...  
JP2013527394A
[Subject] A fluid pump assembly and an operating method for the same are provided. [Means for Solution] Pump control assembly 12 contains fluid pump assembly 12 which has fluid pump 20 and load detection valve 42. Fluid pump 20 includes ...  
JP5218204B2  
JP2013125380A
To achieve simple and highly responsive motion control of a fluid pressure controlled actuator.A difference between a target position and a current position of a piston 13 is acquired to obtain proportionally controlled pressure that is ...  
JP2013524107A
The present invention relates to a liquid pressure type fan drive, and is this liquid pressure type fan drive, A liquid pressure pump which can adjust distance capacity, and a pressure control valve device which controls pump pressure by...  
JP2013121244A
To achieve stable thrust control without being affected by a change in an actuator displacement in controlling a hybrid actuator.In controlling a hybrid actuator, the thrust of the actuator is controlled in a combination of feedback cont...  
JP2013113397A
To accurately perform straight advancement drive and rotation drive in a fluid pressure actuator.A fluid pressure actuator 10 includes: a rod 14 including a spool 16 and an output shaft 18; a sleeve 20 which holds the spool 16 in a slida...  
JP2013104454A
To prevent corrosion damage of an electric component of a displacement detection part (angle sensor), sticking of a rotary shaft, and the like.In a positioner 100 in which an angle sensor 4 is fixed and installed to a control valve 200, ...  
JP2013519047A
Operation drive mechanism on a valve by which fluid energization is carried out contains a linear actuator (4) of at least one body which can be energized using a control mechanism of a basic unit (6) which has a control mechanism of ele...  
JP2013088918A
To provide a positioner capable of providing afterward a communication function using a basic circuit part of a conventional type positioner as it is.A basic circuit part 10 of a conventional type positioner and a communication function ...  
JP2013087818A
To provide a positioner which is resistant to an effect of low frequency noise.A variable impedance circuit ZB as an active load Z is arranged between an input line L1 and an output line L2. The variable impedance circuit ZB has a charac...  
JP2013088917A
To obtain an emergency shutoff function which does not depend on software without arranging an electronic switch in a loop of adjustment current.In a comparator circuit 6, a value of a control signal from a host device 100 is compared wi...  
JP5183202B2  
JP5154806B2  
JP2013019425A
To provide a hydraulic device in which the opening/closing frequency of a solenoid valve can be suppressed while responsiveness of a hydraulic pump is enhanced.The hydraulic device includes: a pump 450 driven by a motor 400 to be rotatab...  
JP2013019426A
To provide a hydraulic device and a method for controlling the same, capable of improving positioning accuracy while improving responsiveness of a hydraulic pump.The hydraulic device includes: a pump 450 driven by a motor 400 to be rotat...  
JP5105845B2  
JP5095458B2
A hydraulic servo drive device includes: a pilot spool (20) for switching supply and shutoff of oil; a servo piston (11) slid in accordance with the pilot spool (20); a stroke sensor (15) for detecting a displacement of the servo piston ...  
JP2012233557A
To enable vibration isolation control and inclination control of a surface plate while utilizing characteristics of an automatic leveling valve in a two-layer three-way valve for a vibration isolation system.A surface plate vibration iso...  
JP2012233584A
To provide a proportional actuator valve that can properly maintain and adjust a position of an actuator.The proportional actuator valve includes: a valve housing having at least two chambers 324, 325; a valve slider 113 movable in the h...  
JP5074640B2  
JP2012528279A
A digital hydraulic controller has at least two rows of valve elements: one can connect a supply line to a controller output, the other can connect the controller output to an outlet line. The valve elements of each row are connected in ...  
JP2012208822A
To surely improve controllability such as quick responsiveness or setting property of the aperture control of a control valve without sacrificing any basic function.A table TB1 in which the range of currents which can be obtained from su...  
JP2012207754A
To achieve double connection between transmission passages of two lines and connection with the other load by reducing a voltage between minimum operation terminals.A variable impedance circuit Z2 is arranged between an input line L1 and...  
JP2012207747A
To improve quick response and settlement properties in valve opening control.A value Km×dPo/dt obtained by multiplying a derivative (pressure derivative) dPo/dt by a constant Km is used as a second feedback value to a drive unit 2a of a...  
JP2012207756A
To surely exhibit a high function while avoiding the shortage of a supply electric current.A power supply control function 1C is arranged in a control part 1. The power supply control function C1 controls on/off-operations of switches (S...  
JP5055563B2  
JP4963446B2  
JP4959284B2
To improve responsiveness, and to accurately control a position. A spool 24 is slidably moved in a sleeve 23 arranged in a valve body 22. An inner peripheral groove 25 having a supply port 25a to which compressed air is supplied, an inne...  
JP2012102882A
To provide a method and apparatus for performing diagnostics in a pneumatic control loop for a control valve.A pressure sensor and displacement sensor 84 normally provided with a positioner 14 are used to detect operating parameters of t...  
JP2012511127A
A device which controls a flow is indicated. Signal stage which an example of a flow control device indicated on these specifications equips with a signal stage relay which has a valve seat and a supply plug connected with an exhaust air...  
JP4934077B2  
JP2012057776A
To provide a large flow-rate type high-speed linear servo valve capable of increasing a thrust even while maintaining high responsibility without enlarging a voice coil type linear motor itself.The electric/hydraulic linear servo valve i...  
JP4900625B2
To enhance an operating efficiency by dispensing with a complicated operation wherein an engine is once stopped and started again at the time of switching forward and reverse rotation of a cooling fan. A forward rotation position A for r...  
JP4890845B2  
JP2012013135A
To provide a method for control of an extruding device and an extruding device, capable of precisely controlling extruding processing, even though the conditions are different.One of the conditions of an initial condition in which the mo...  
JP2011530099A
A flow control valve includes a housing that includes a fluid inlet, a fluid outlet, a first work port and a second work port. The housing defines a spool bore and a pilot spool bore. A main stage spool is disposed in the spool bore. A p...  
JP2011240838A
To easily adjust an aboveground height of a vehicle body and a wheel load of a drive wheel.The forklift includes a drive cylinder 11 for vertically rocking the drive wheel 10, a caster cylinder 21 for vertically rocking an auxiliary whee...  
JP2011203151A
To more easily adjust an internal pressure of an air cylinder disposed in a measuring device.A probe 26 for measuring the shape of a specimen is fixed to an air cylinder 62, and the probe 26 is moved by vertical movement of an operation ...  
JP2011185424A
To prevent wear, bending, failure, etc. of a feedback lever.A turning lever having a magnet holding member 125 is provided at a rotary driving shaft of a rotary valve. First and second permanent magnets 130, 131 are fixed to the inner su...  
JP2011185423A
To prevent bending, failure, etc. of a feedback pin and a feedback lever, with no influence exerted on mounting accuracy between parts.A magnet holding member 131 having first and second magnet holding parts 131b, 131c is provided on a d...  
JP2011185422A
To prevent bending, failure, etc. of a feedback pin and a feedback lever, with no influence exerted on mounting accuracy between parts.A magnet holding member 131 having first and second magnet holding parts 131b, 131c is turnably provid...  
JP4771227B2  

Matches 301 - 350 out of 3,875