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JP2586977B2 |
PURPOSE: To obtain a fluid controller, which keeps manually steering capability and is made to give priority to the operation of the fluid controller over that of an electric hydraulic valve in particular when an electronic controller is...
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JP2587321B2 |
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JPH0960607A |
To facilitate handling and reduce noise. An inner cylinder 1 and an outer cylinder 2 which are arranged coaxially are held between a head cover 4 and a rod cover 6, and a ring shaped piston 12 is slidably inserted between the inner cylin...
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JPH0960604A |
To carry out the tuning control of the position and speed of a plurality of actuators by arranging a hydraulic distributing shaft on both ends of a plurality of eccentric shafts, arranging a liquid rotary joint on the outer peripheral pa...
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JP2585033B2 |
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JPH0949502A |
To provide a valve positioner easy to regulate with a satisfactory controlling chacteristics. An operation amount (u) is calculated by a control calculation section 2 and converted to air pressure Pd by electricity/air converting means 3...
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JPH0942202A |
To provide a positioner for an actuator position control in which the stop position of an actuator does not change by resulting from a mounting direction. In a positioner for an actuator position control composed of a pneumatic controlle...
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JPH0942213A |
To execute control while setting a sensor valve to a neutral reference value at the start of operation by setting a preset standard value to the neutral reference value if a position is determined to be inappropriate. An operating transf...
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JP2579687B2 |
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JP2579682B2 |
A valve positioning device capable of comparing the travel position of an output shaft of a diaphragm actuator or cylinder with the pressure level of a pneumatic input signal and further being capable of manipulating the pressure of a se...
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JPH0932804A |
To provide a rotary actuator which can enlarge a guide passage for passing tubing or wiring without increasing the whole size. A cylindrical cylinder tube 18 is installed so that its axial line may be on one circumference. Both the ends ...
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JP2575908B2 |
A multi-port, self-regulating, proportional control valve preferably uses a load output feedback system to produce working fluid load output pressures that are proportional to pilot control fluid pressures. In some embodiments, the contr...
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JP2576627B2 |
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JPH0925902A |
To restrain the increase of the thickness of an air cylinder in the axial direction as far as possible by incorporating a permanent magnet between the piston of the air cylinder and the end cover. A end cover 2 made of a magnetic substan...
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JPH0925910A |
To set the displacement stroke of a pressure receiving body at an arbitrary value. A piston 21 is movably provided inside the cylinder tube 20 of an air cylinder 13, and the inside of the cylinder tube 20 is partitioned by the piston 21 ...
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JP2572399B2 |
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JP2572436B2 |
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JP2569907B2 |
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JP2567378B2 |
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JPH08338403A |
PURPOSE: To enable applying of a continuous pressure and performing of pressure control accurate in good stability, by controlling a pressure of oil by controlling a hydraulic cylinder shaft with fine longitudinal motion. CONSTITUTION: A...
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JPH08326705A |
PURPOSE: To improve reliability and EMI(electromagnetic interference)-resistance of an actuator by providing a controller which inputs the output of a position detector of a control piston and an actuator as a feedback input and sends a ...
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JP2559919B2 |
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JPH08320001A |
To provide a switching device of low price, reliability, and with few components by connecting a pilot valve to a feed conduit and a discharge conduit, connecting first and second openable check valves to first and second check valves, a...
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JPH08314502A |
PURPOSE: To effectively attenuate a limit cycle by setting a compensator increasing input quantity through the use of the inverse function of a blind sector estimated by means of monitoring the limit cycle. CONSTITUTION: A target value y...
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JPH08303413A |
PURPOSE: To enhance versatility by selecting operation and action modes of an air cylinder, by setting acceleration times in X, Y directions for automatic operation mode, deceleration time and low speed feed pressure, by performing calcu...
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JP2516315Y2 |
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JPH08286755A |
To disclose the controller for automatically controlling work elements of an earth work machine. The work element includes a bucket 110 having a couple of pinch arms 115 and the pinch arms 115 in pairs are operated to be controlled by a ...
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JPH08278161A |
PURPOSE: To make a piston position detectable with high accuracy at plural positions in the midway. CONSTITUTION: A section-elliptocal cylinder tube 2 is provided with an elliptical section piston 11 turnably. In addition, a rotational d...
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JPH08270605A |
PURPOSE: To reduce cost by forming a structure simplified into small size in a positioning device of an air cylinder. CONSTITUTION: A solenoid valve 18, arranged between the first cylinder chamber 12 and an air pump 16 to switch air supp...
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JPH08261203A |
PURPOSE: To provide an inexpensive rotation controller for a rotary actuator for large output by enabling the controller to control the rotation of a motor to thereby accurately control the rotation speed or rotation angle of a hydraulic...
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JPH08232904A |
PURPOSE: To provide a servo device for use in the radiation field such as nuclear reactors, which is capable of improving the danger of contaminating water, reduction in output density due to mechanical limitation, and the limitation of ...
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JPH08227317A |
To attain tuning without any manual movement of a servo valve, any use of a switch or a potentiometer, or any removal of an inputting and outputting substrate. A position control circuit 70 is provided with a demodulator 22 having an aut...
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JP2521206B2 |
PURPOSE: To make efficient microadjustment of a quantity of oil and to improve rolling accuracy by setting a clearance between rolls of a rolling roll, comparing a set value with a measured value and calculating them and mounting two flo...
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JPH08200303A |
PURPOSE: To enable control with high speed and high accuracy by communicating a pressure chamber with a pump port and a tank port according to a spool displacing direction, and communicating an actuator port with the pump port and the ta...
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JP2520187B2 |
A multiplexed hydraulic control system having a plurality of channels (70) and a common source (50) of modulated hydraulic fluid. The common source (50) is shared among the plurality of channels (70) by providing a plurality of selector ...
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JPH08174299A |
PURPOSE: To suitably execute the control to restrict the overshoot of a ram in the case of the load being eliminated suddenly like punching of using the ram of a hydraulic press. CONSTITUTION: Four proportional sheet valves V1 to V4 are ...
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JP2510667B2 |
An electropneumatic position regulator having a current/pressure transducer has, as electric input, at least one coil (11) fed with a current (setting signal), as well as a permanent magnet (16) whose relative position is variable as a f...
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JP2510218B2 |
Apparatus for determining the position of a movable member (22) in an electrohydraulic servo system (10) which includes a linear actuator (20) having a cylinder (18) and a piston (22) variably positioned therewithin, a servo valve (12) r...
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JP2510419B2 |
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JPH08161053A |
PURPOSE: To efficiently use a hydraulic supply system by reducing respective output signals, respective target signals, or respective deviation signals of command input means in proportion to the ratio of the overall flow rate signal to ...
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JPH08157027A |
PURPOSE: To remarkably improve the accuracy in locating the dropping position of a plate workpiece sucked and transported by a vacuum suction transport endless belt to dispense with the provision of attachments like arranging devices and...
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JPH08145006A |
PURPOSE: To provide a hydraulic servo device wherein the relation between input and output is always linearized, and the displacement of a load against a target value signal is completely linearized. CONSTITUTION: In a hydraulic servo se...
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JPH08129401A |
PURPOSE: To eliminate the fear of a serious accident of plant by providing a changeover switch to transmit a drive signal to an actuator by the output of an arithmetic means that operates the deviation between the value of electronic vol...
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JPH08109904A |
PURPOSE: To cope with the large stroke of an input rod by arranging oil passages for feeding and discharging oil in the axial direction in a piston part and oil passages for feeding and discharging oil in the axial direction of its input...
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JPH08100801A |
PURPOSE: To improve stability and responsiveness of valve position control with inexpensive and simple constitution by providing a mechanism for continu ously regulating a spring constant while screwing to one end of the coil spring of a...
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JPH0893704A |
PURPOSE: To stabilize a system even when a load pressure difference is zero, and prevent a waveform variation by eliminating looseness of the system. CONSTITUTION: In a hydraulic servo system provided with a controller 1 to make an objec...
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JPH0826884B2 |
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JPH0820024B2 |
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JPH0816481B2 |
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JPH0849659A |
PURPOSE: To reduce the occurrence of electrical processing for control of a proportional solenoid valve, to reduce the occurrence of a failure in operation, and to improve reliability by providing constitution wherein mechanical feedback...
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