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Matches 351 - 400 out of 3,876

Document Document Title
JP4768167B2  
JP2011522174A
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...  
JP2011127639A
To control actuators without any influence of play, sliding resistance or the like even when play, sliding resistance or the like is caused in a displacement transmission passage by individually controlling two actuators.This double cont...  
JP4698852B2  
JP4690309B2  
JP4687944B2  
JP2011513680A
In the almost same space needed in a single oil pressure cylinder, a hydraulic actuator is constituted so that an airplane may be provided with redundant boost control. A hydraulic actuator is provided with a case and a piston assembly a...  
JP4665226B2
A solenoid operated valve has a separate pressure sensing port (30) communicating with the valve outlet port (16). A circuit board (38) with a pressure transducer (36) mounted over a sensing orifice in the board (38) is attached to the v...  
JP4663856B2  
JP4644982B2  
JP4645931B2  
JP4641608B2  
JP2011038558A
To provide an electric fluid pressure actuator device in which iron loss of a motor is suppressed without causing complexity in constitution while being capable of fulfilling an original function of a pressure compensation mechanism with...  
JP4629257B2  
JP2011503482A
An electrohydraulic booster comprises an electromechanical transducer and a hydromechanical power stage which is connected to a pressurized medium supply and encompasses a cylinder and a piston that can be moved therein along the working...  
JP4589616B2  
JP2010534811A
[Means for Solution] A proportional expression actuator (110) for position control and position adjustment is provided. The proportional expression actuator (110) is provided with a valve housing (112) with at least two chambers (324, 32...  
JP4578017B2  
JP4575770B2  
JP4567236B2  
JP4559867B2  
JP4563512B2  
JP4559663B2  
JP2010169209A
To provide a simple and inexpensive device by reducing overshoot or undershoot resulting from the compressibility of air in positioning control of a double acting pneumatic cylinder.In positioning control of a double acting pneumatic cyl...  
JP2010515005A
A method for estimating actuator position includes the steps of receiving fluid pressure data signals from a plurality of fluid pressure sensors (31), receiving spool position signals from at least one spool position sensor (33), and rec...  
JP4457299B2  
JP2010071414A
To accurately control a stroke by a simple means by compensating aged deterioration of a flow rate control valve which controls working fluid, in a feedback control device for the stroke of an actuator driven by the working fluid.This st...  
JP2010071442A
To provide a valve opening control device capable of obtaining sufficient rotational torque with inexpensive system configuration without enlarging an operating device, and performing continuous control of valve opening to cope with the ...  
JP4443794B2  
JP4432053B2  
JP4421131B2  
JP2010007704A
To prevent the controllability of a servo valve from lowering owing to the nonlinear characteristics.An actuator comprises: a hollow cylinder; a piston stored in the cylinder, and moving relatively to the cylinder while forming a pair of...  
JP2010007703A
To stabilize the motion of an actuator having a double action cylinder.The actuator comprises: a hollow cylinder; a piston stored in the cylinder and moving relatively to the cylinder while forming a pair of pressure chambers together wi...  
JP4375998B2  
JP4365870B2  
JP4359559B2  
JP4351583B2  
JP4354300B2  
JP4353335B2  
JP2009228771A
To provide a hydraulic servo driving device and a variable turbocharger using the same, capable of cooling by circulating oil to a heat-sensitive part such as a stroke sensor, without exclusively arranging an oil passage for circulating ...  
JP2009216164A
To enhance an accuracy of hydraulic control by a three direction switching type rotary control valve.When an inner rotor 62 is rotated under such a condition that oil path ports 75a, 75b of an outer rotor 61 are closed by partition wall ...  
JP4334090B2  
JP2009197974A
To obtain a torque generator capable of easily setting a basic discharge rate of a motor.The torque generator comprises a swash plate type piston motor 60 connected with an output shaft 42, and a control valve 50 for controlling the swas...  
JP2009187543A
To provide a digitally controlled current-to-pressure converter (CPC).The digital CPC uses a digital controller and an onboard pressure transducer to accurately control the output pressure based on an input analog control signal. The dig...  
JP4286925B2  
JP2009138947A
To provide a method and apparatus for performing diagnostics in a pneumatic control loop for a control valve.Pressure sensors 85, 86, 88 and displacement sensors 68, 84 normally provided on a positioner 14 are used for detecting the oper...  
JP2009121576A
To provide a hydraulic servo drive device capable of surely detecting abnormality of a driven body such that a poppet valve is not returned from an opening side, and also to provide a valve device using the same.This EGR valve device 1 i...  
JP4268431B2  
JP4263072B2  
JP4263373B2  

Matches 351 - 400 out of 3,876