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Document Title |
JPH1068145A |
To improve the operability, by receiving a cylinder speed and an operator's command signal and controlling the hydraulic cylinder to a required speed in response to the speed difference. A joy stick position detector 220 detects the posi...
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JP2723329B2 |
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JPH1061602A |
To accurately control a molten metal level in the mold of continuous molding facilities in a preset position by improving the responsiveness and follow-up ability of a hydraulic cylinder. A hydraulic cylinder 3 adjusts the flow rate of m...
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JPH10501876A |
A double-acting hydraulic cylinder is controlled by a pair of three-way solenoid valves respectively fluid connected to the two ends of the cylinder and energized in parallel with a continuous stream of pulse width modulated (PWM) pulses...
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JP2562931Y2 |
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JPH1030602A |
To perform control of the hydraulic cylinder of a skid steer loader. A control stem 42 controls operation of the hydraulic cylinder of a skid steer loader. The control system is provided with a movable element movable by an operator. A p...
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JPH1030603A |
To announce what kind of abnormality occurs to the central monitoring device side by a method wherein abnormality of a positioner itself and a regulation valve is diagnosed without increasing the load of a host control device and increas...
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JP2706032B2 |
PURPOSE: To prevent the wrong action of load control by providing a flow control valve for controlling the supply/discharge of pressure air to/from a cylinder in a device capable of performing positioning control and load control, with b...
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JP2706966B2 |
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JPH1026101A |
To prevent drifting of a hydraulic pressure cylinder by connecting a hydraulic pressure actuator and a hydraulic pressure pump free to rotate in both directions to each other by a pair of conduit runs, connecting a hydraulic pressure tan...
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JPH102301A |
To provide an electric control device for a hydraulic circuit to improve responsiveness and realize stable control characteristics without arranging a control valve being of special structure. In a flow control valve 2 and a hydraulic mo...
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JP2687961B2 |
A servo system having an improved loop stability and response time. A phase shifting circuit is inserted in the feedback loop providing an open loop phase lag characteristic at a resonance frequency of a load system in a range of -270 DE...
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JP2685556B2 |
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JP2679910B2 |
PURPOSE: To conduct control to give an input value to a stepping motor in considering a flow characteristic and working load of oil flowing in a communication hole so that advance/retreat quantity of a piston rod in a cylinder main body ...
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JPH09291907A |
To provide a large propulsion force and high precision hybrid servo cylinder in which a servo cylinder and a stroke cylinder are constituted with a hybrid structure. Rods 3, 4 of a plurality of oil pressure cylinders 1 and 2 which are ar...
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JP2664534B2 |
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JP2549145Y2 |
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JPH09250654A |
To ease a problem such as a low frequency response and a low reliability generated when a contaminated operation oil whose viscosity is changed in a low hydraulic pressure system is used. This hydraulic device 10 has a single stage of el...
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JP2653434B2 |
An electrohydraulic system includes a plurality of electrohydraulic devices (22a-22n) individually controlled by on-board microprocessor-based control electronics (56, 58, 60). Each individual device controller (26) is connected to and a...
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JP2652023B2 |
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JPH09229009A |
To adjust air pressure of an air cylinder simply and correctly, in a device balancing a controlled object displaceable in the fixed direction due to gravity on a fixed position by the air pressure of the air cylinder. This robot device i...
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JP2647567B2 |
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JP2647750B2 |
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JP2646358B2 |
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JP2647852B2 |
A system and method for remotely measuring and linearizing flow characteristics, specifically velocity characteristics, of an electrohydraulic servo valve (12) and actuator (14) system. A plurality of raw command signals (UM) are generat...
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JPH09222924A |
To correct variance in stop position at the time of mold opening completion of a movable board, reducing the variance width, and suppress product mischucking of a taking-out machine by correcting the position of switching from a fast mol...
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JPH09217701A |
To constitute a feed back control system by using a value for detecting properties about the limited number of variables, and a calculating device for carrying out a simple calculation processing, and suppress vibration of a structure ef...
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JPH09196002A |
To lower the cost for connecting a power transmitting cable and an input and an output members. In the structure for connecting a throttle cable 20, which has a cable side connector 21 in an end thereof, and a diaphragm plate 10 having a...
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JP2634155B2 |
PURPOSE:To balance different positions of an acting body completely by use of two hydraulic cylinder devices and two servo devices by providing a tuning circuit having a deviation calculation part and an average value calculation part. C...
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JPH09189052A |
To prevent a machine frame from being raised when top soiling operation is performed by a hydraulic shovel. A relief oil path 20 is branched from between a load check valve 5 installed before a cylinder 7 for raising and lowering a boom ...
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JP2631360B2 |
To allow simple manufacture and control by joining two control portions relatively rotatable in a coaxial manner via a torsion bar with torsional deflection and friction-joining the torsion bar at its end to the corresponding valve contr...
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JPH09177703A |
To control a pressing force by adjusting the opening of a valve by the deviation of the rotation angle through a process of applying pressing force to an object through a rod of a piston. A three-way valve 26 can take three states of for...
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JPH09175421A |
To equalize a rotational frequency of lock-to-lock of either sides of a steering wheel in a hydraulic steering device containing one rod type cylinder. A fluid pump 11, a reservoir 13, and one rod type cylinder 25 are connected to an inl...
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JP2623744B2 |
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JP2538434Y2 |
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JPH09151907A |
To synchronously operate a plurality of cylinders without depending on an electric operation control system. In a device having one-side ends of a plurality of cylinders 3 connected to a rising and falling lid 2, it is necessary to simul...
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JPH09151904A |
To enhance operativeness by detecting inclination quantity of a control lever for making the first and the second operations in the X, Y axial directions on a plane, making outputs in such a manner as being capable of carrying out both o...
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JPH09137801A |
To provide a valve positioner suitable for the digital transmission signal of control by enabling a control valve to operate smoothly and also enabling a precise control for high speed responding with a small over shoot amount. A valve p...
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JP2612698B2 |
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JP2612699B2 |
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JPH09126119A |
To easily remove bubbles, and furthermore make the replaceability of fluid excellent by providing check valves for the side of a pump head and a plunger which have a cylinder as a column shaped space in their inside parts, and for the si...
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JPH09119402A |
To provide an oscillation prevention method for a hydraulic servo device preventing the oscillation at the low speed operation time. In a method for moving a piston position by connecting the oil supply system and oil discharge system of...
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JP2604079B2 |
PURPOSE: To smoothly drive a pneumatic cylinder and improve the stop accuracy of a piston at an intermediate position. CONSTITUTION: The position of the piston 22 of a rodless cylinder 21 is detected by a position detector 31. A control ...
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JPH09105140A |
To make it possible to compact the ground surface or the like with a shovel of a hydraulic shovel by mounting a bucket whose bottom is flat on an arm of a hydraulic shovel and connecting a bucket cylinder connected to the arm to the buck...
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JP2598854B2 |
PURPOSE: To provide a reciprocating actuator which is preferable in explosion proof and capable of easily variable control of the moving stroke of a piston, the moving speed of the moving stroke or the like. CONSTITUTION: A piston 13 is ...
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JP2530168Y2 |
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JPH0979204A |
To improve safety and reliability by avoiding any inconvenience that a pressurized fluid fed to a pressure chamber in a movable part is leaked to the outside due to a rupture of the wall surface of the pressure chamber, or a leakage out ...
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JPH0968201A |
To enhance the controllability of an actuator when it is operated in combination with other actuators at crawling speeds, regardless of whether the load on the actuator is heavy or light. A directional control valve 3 controlling the amo...
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JPH09502501A |
(57) [Summary] It is a direct drive servo valve that includes the rotor position sensor (46) of the motor as an integral part. This rotor position sensor (46) is used to generate an electrical signal that indicates the rotation angle of ...
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JPH0968202A |
To facilitate adjustments for balancing weights by providing a hydraulic cylinder for controlling the angle by which a balance arm to which a plurality of tools can be removably attached is moved up and down, a relief valve capable of ad...
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