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Patent Searching and Data


Matches 801 - 850 out of 3,877

Document Document Title
JPH1089303A
To provide a control system of a hydraulic actuator which is capable of suppressing, e.g. behaviors of the prescribed state variables of the control system such as spool displacement of a servo valve and hydraulic cylinder differential p...  
JPH1089308A
To provide a varible priority device recognizing pilot pressure by set pressure by which a high pressure side control valve for supplying hydraulic operating fluid to a work device for which high load is requested can be made to operate ...  
JPH1088626A
To provide an operation driving device capable of conducting operation avoiding an obstruction in an upper section and also capable of performing operation as a normal two-piece boom type working machine. A second boom-signal converter 1...  
JP2730833B2
PURPOSE: To finely position a body which is, specially, heavy and large in inertia with high precision. CONSTITUTION: The positioning control method and device integrate the deviation between the detection signal 10a from the sensor 10 o...  
JPH1078003A
To prevent generation of a hunting phenomenon by providing a solenoid valve. A hydraulic pump 2 driven by an electrically operated servo motor 1 capable of rotating in both directions is provided, and a rod side port 14 of one rod type h...  
JPH1078163A
To promote responsiveness of a valve control system by detecting the present position of a spool, generating an internal feedback signal, comparing a correction signal with the internal feedback signal, and generating a spool positioning...  
JPH1078004A
To eliminate the friction or wear of a moving part which is a possible cause for the deterioration of an electropneumatic positioner for longer service life by feedingback the position signal of a valve stem with no-contact. A deviation ...  
JPH10502998A
(57) Summary book invention is a positioning drive, especially a positioning drive for machine tools, which the liquid pressure motor (10) is formed and a liquid pressure motor can rotate together with a motor shaft (18) Have the control...  
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...  
JPH1068144A
To increase the operability, by receiving the position of tools and operator's command signals and correcting the signals and controlling a hydraulic cylinder. A joy stick position detector 220 detects the position of a joy stick control...  
JPH1068404A
To reduce the hysteresis over the whole working area, and to avoid chattering of a valve by forming the control quantity to control the valve of at least two control quantity components, modulating a first control quantity component by a...  
JP2723329B2  
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...  
JPH10501876A
(-- 57) summary -- it is a double-acting liquid pressure cylinder controlled by the 1 to 3 direction electromagnetic valve, and each of the 3 direction electromagnetic valve, Voltage is impressed in parallel by the continuous flow of the...  
JPH1047302A
To reduce the number of workers and transceivers in the case of performing a loop check. A liquid crystal display part 7G is provided in an electropneumatic positioner 7. A flow value Qpv from a flow meter 4 is fed to the electropneumati...  
JP2562931Y2  
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...  
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...  
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...  
JP2706966B2  
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...  
JPH1019008A
To eliminate the need for releasing the hydraulic pressure acting on a hydraulic acator to restrict the generation of switching shock when switching between different feedback signals is performed. Between a control means 7 which compare...  
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...  
JPH09329103A
To provide a hydraulic device which can be driven and controlled by directly connecting a plurality of hydraulic actuators to a single hydraulic pump. A hydraulic pump 1 is used which is driven by an electric motor 6 and can be rotated i...  
JP2687961B2  
JP2685556B2  
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 ...  
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...  
JPH09291902A
To provide a servo controller which can eliminate a response delay as much as possible. A correction means 6 is provided for receiving an object value signal a feedback signal b at control output means 5 on the basis of a deviation of th...  
JP2664534B2  
JPH09264421A
To provide an operation device for a transmission where a shock just after the synchronous completion of a speed change motion is reduced, and a shift feeling is improved. A reaction piston 19b to give reaction for giving operation feeli...  
JP2549145Y2  
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...  
JP2653434B2  
JPH09242706A
To easily perform maintenance of an electropneumatic converter. An opening part 16-2 is formed on a wall surface of an explosion-proof case 16, and an electropneumatic converter 3 is fixed to the inside of an explosion proof cover 16-3 t...  
JP2652023B2  
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...  
JP2647567B2  
JP2647750B2  
JP2646358B2  
JP2647852B2  
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...  
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...  
JPH09203401A
To simplify regulation of a range by arranging a rapidly fastening means for locking a movable piece on the desired position of the slot of an arm coaxially with a center shaft, and mounting a bearing for supporting the lower circumferen...  
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...  
JP2634155B2  
JPH09190222A
To highly precisely position a work without being affected by the fluctuation of weight and the like by displacing a piston to a target position in a state where balance pressure is held under the operation of a rotary driving source so ...  
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 ...  
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...  
JPH09184501A
To control the raising and lowering of a work device with rapidity and without developing overshoot. This controller is equipped with a hydraulic cylinder 2 by which a plow connected to a travelling car body is drivingly lifted and lower...  

Matches 801 - 850 out of 3,877