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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 ...
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JP4771227B2 |
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JP4768167B2 |
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JP4698852B2 |
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JP4690309B2 |
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JP4687944B2 |
A method for controlling an air servo cylinder apparatus includes an advancing process of advancing a piston up to a target position by controlling, by a controller, servo valves individually connected to a pressure chamber on the head s...
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JP2011513680A |
A hydraulic actuator is configured to provide redundant boost control to an aircraft within approximately the same space required by a single hydraulic cylinder. The hydraulic actuator includes a housing and a piston assembly disposed wi...
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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...
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JP4663856B2 |
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JP4644982B2 |
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JP4645931B2 |
A fluid pressure device including a housing (13) defining a high pressure port (31) and a low pressure port (33). The housing defines a shuttle bore (35) and disposed therein is a shuttle valve assembly (51) including a shuttle spool (63...
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JP4641608B2 |
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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...
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JP4629257B2 |
A controlling and computing device performs the steps of: differentiating a slider position represented by a position detection signal fed from a position sensor, and calculating the velocity of the slider, differentiating the calculated...
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JP4589616B2 |
The tap system is activated by a hydraulic drive controlled by a motor feed and a hydraulic pump pumping fluid in a hydraulic reservoir. The equipment is housed in a common fluid sealed envelope and has a local manual tap control (22).
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JP2010534811A |
A proportional actuator valve (110) adapted for position control and position adjustment is provided. The proportional actuator valve (110) includes a valve housing (112) having at least two chambers (324, 325). The chambers are separate...
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JP4578017B2 |
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JP4575770B2 |
Method and apparatus for performing diagnostics in a pneumatic control loop for a control valve. Pressure and displacement (68, 84) sensors normally provided with a positioner (14) are used to detect operating parameters of the control l...
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JP4567236B2 |
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JP4559867B2 |
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JP4563512B2 |
An inner pressure of an actuator is measured by a pressure measuring unit, and an amount of displacement of a movable mechanism is measured so that a position error compensation unit to which a desired value for the displacement and the ...
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JP4559663B2 |
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JP4457299B2 |
A method for controlling an air cylinder such that air is supplied to and exhausted from pressure chambers of the air cylinder by air servo valves. Pressures in the pressure chambers are detected by pressure sensors, signals of the detec...
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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 ...
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JP4443794B2 |
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JP4432053B2 |
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JP4421131B2 |
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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...
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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...
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JP4375998B2 |
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JP4365870B2 |
A fluid pressure actuator includes an output cylinder, a fluid pressure pump, an electric motor, a first output cylinder passage, a second output cylinder passage, a return passage and a swash plate control cylinder. The output cylinder ...
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JP4359559B2 |
Apparatus, and an accompanying method for use therein, that utilizes working and stopping servo-controlled hydraulic pistons wherein the stopping piston acts as a controlled mechanical stop for the working piston. Both pistons are spaced...
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JP4351583B2 |
A power steering apparatus includes an input shaft, an output shaft, a piston arranged to separate a first hydraulic chamber and a second hydraulic chamber, a ball screw mechanism, an output member, a control valve configured to supply h...
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JP4354300B2 |
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JP4353335B2 |
Between an air source and first and second pressure chambers of a double-acting main cylinder having a length measurement sensor for measuring an acting position of a piston, a first supply solenoid valve and a second supply solenoid val...
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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 ...
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JP4334090B2 |
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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...
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JP4286925B2 |
A system and method for controlling an independent metering valve operating in a hydraulic circuit determines a displacement command for one or more metering valves to provide desired flows through the metering valves and desired pressur...
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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...
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JP4268431B2 |
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JP4263072B2 |
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JP4263373B2 |
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JP4244507B2 |
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JP4241747B2 |
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JP4236151B2 |
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JP2009505004A |
The invention relates to a control valve unit (9) for a variation device of a hydrostatic piston engine. The control valve unit (9) comprises a valve housing (34), in which a valve element is disposed in a longitudinally displaceable man...
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JP2009503380A |
The invention relates to a method and device for positioning a component. A hydraulic drive displaces the component along a guide. A position marking for the component is read by at least one sensor. An output signal is transmitted to a ...
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JP4216099B2 |
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JP4206194B2 |
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