Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 551 - 600 out of 3,876

Document Document Title
JP3447481B2
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...  
JP3447487B2
To provide a compound type hydraulic actuator suited for intake/ exhaust valve open/close timing control of an internal combustion engine having sufficient drive force, good responsiveness and a wide control range. An actuator comprises ...  
JP2003254304A
To continuously keep an abnormal servo control valve 39 separated from a control system and to make the servo control valve 39 having recovered from the abnormality reusable.When the movement of a control member 41 of the servo control v...  
JP2003239901A
To provide a feedback mechanism and a valve positioner which prevent the wear and breakage by improving the vibration-proof structure to improve the reliability, and extend a service life.The feedback mechanism 24 comprises a feedback pi...  
JP2003524763A
(57) It is a load assembly (2, 88) for impressing load to a summary specimen (1, 105). This load assembly contains the container (4, 6, 97, 98) which has the capacity of the compressive fluid (3) for offering a spring. The cylinder (6, 9...  
JP3437603B2
PURPOSE: To accurately locate a rod controlling the real moving position of the rod by a motor position command signal designated to decrease a difference value between the position command signal for indicating a specified position to l...  
JP2003194003A
To provide a servo motor for keeping a difference between the rotating speed of a fluid motor and a rotating speed instructed by an input signal smaller than conventional, even when torque generated by a fluid motor is smaller than loadi...  
JP2003194013A
To improve the controllability of a spool for a switching control valve and improve the responsiveness of a spool to a pull allowance signal for a speed lever for a remote operator by reducing the poor influences of a dither signal.This ...  
JP2003167604A
To accurately estimate disturbance by accurately identifying the control parameter of a control system.A position control signal u is inputted to a real controlled object 10, and hydraulic equipment (a valve 12) is operated, and position...  
JP2003167629A
To provide a simple and inexpensive position controller capable of executing positioning with high position precision.The stroke of a piston rod 12 of a cylinder 10 in which a A chamber and B chamber on the both ends of a piston 11 commu...  
JP2003156003A
To provide a control device for a hydraulic machine for improving a tracking performance and stability of control.The control device 1 of the hydraulic device comprises a means 6 for preparing a desired value to be controlled of a contro...  
JP2003148404A
To release surplus hydraulic oil generated in stopping the drive without excess energy.This electro-hydraulic motor is provided with a spool valve 110 for switching between a driving position 111, 112 connecting a main oil passage 230 an...  
JP2003148402A
To realize a hydraulic control system capable of performing feedback control based upon a detected value related to hydraulic drive in a stable state.This hydraulic control system includes a liquid pressure circuit for controlling the hy...  
JP2003139101A
To provide a servo cylinder reducing total length as compared with conventional one.An electrohydraulic servo cylinder 100 is provided with: an electric motor 110 rotating a driving shaft 111; a cylinder 121; a piston 122; a driving part...  
JP3406095B2
PURPOSE: To provide the fluid pressure cylinder which can switch an oil pressure source to high/low pressure so as to reduce the energy consumption, and spontaneously performs these switches according to a load so that a control system c...  
JP2003130008A
To provide a high speed driving method and its apparatus for a pressure cylinder capable of swiftly eliminating a wasteful working stroke of a piston rod and a driving lag of the piston rod and improving working efficiency.A servo valve ...  
JP2003113801A
To apply a mechanical feedback control and to return a spool valve to a neutral position when a machine or the like is stopped, in a cylinder with an electric servo.The spool valve 4 is provided at the bottom 14 of a hydraulic cylinder 1...  
JP3391655B2
To perform zero and span adjustment easily and in a short time without requiring operating of a valve stem by air supply and without requiring any measuring instrument. A valve opening setting mechanism 50 is established in a feedback me...  
JP2003074504A
To make it possible to control operating speed of a hydraulic pressure actuator and enlarge a design choice for control of the operating speed.An actuator operating unit comprises a hydraulic pressure- generating unit 14 generating hydra...  
JP2003072661A
To secure a body attitude adapted to the number of occupants and loading of cargo by a composition easily and inexpensively applicable to a small vehicle.The body attitude adjusting device is provided with a hydraulic jack J installed in...  
JP2003509628A
(57) Summary book invention relates to the method and equipment for transmitting a control signal and/or a sensor signal between the electronic control and/or the data receiver (21) which were mutually connected through the air pressure ...  
JP3383968B2  
JP2003065301A
To enable change of the operational characteristics of a hydraulic actuator according to an operator's desire as to a hydraulic controller of a construction equipment.A desired speed table 4 memorizing the desired action speed of a hydra...  
JP2003048599A
To ensure a reliable operation of a trim control system for a fully hydraulic horizontal stabilizer in a fixed wing type aircraft. The control system uses hydraulic power only in controlling a trim control surface 8 of the horizontal sta...  
JP3374976B2  
JP2003020958A
To provide a fuel flow control device capable of achieving both high accuracy and responsiveness by providing a high responsiveness and removing the effects of fluid force to eliminate steady-state deviation.A pressure difference sensor ...  
JP2003014072A
To provide a ball screw device allowing a plurality of ball nuts to equally share load applied thereto without changing the mounting positions of the ball nuts to an acting body.In this linear moving ball screw device for moving the acti...  
JP2003010956A
To confirm the accurate position of a pressure pin corresponding to the position of a booster piston of a booster by offsetting the error corresponding to the expansion amount of a rubber hose connecting between a cylinder moving the pre...  
JP2003010916A
To provide an automatic control device for a multi-directional bending machine capable of performing by a hydraulic servo cylinder all the sliding transfers of a plurality of pressing slide dies including wire material feeding and materi...  
JP3367252B2  
JP2002370893A
To easily perform operation by reducing operation force of an operation lever. A crane is provided with a hydraulic actuator 16, and a directional control valve 20 of the hydraulic actuator operated by the operation lever 18. The directi...  
JP2002364516A
To provide a variable blade device of a windmill for preventing a secondary trouble. In this variable blade device of the windmill having a blade 1 for rotating a rotor by wind force and a hydraulic actuator 3 for varying the pitch angle...  
JP2002361308A
To provide a hydraulic drafting device of a rolling mill capable of overcoming instability with the influence of mutual cylinders since the rod side pressure room of each cylinder communicates with each other in the hydraulic drafting de...  
JP2002357201A
To reduce load of a compressed fluid equipment by effectively using supplied compressed fluid in self-weight compensation by means of a fluid cylinder used for a positioning system and the like moving toward a gravity direction. A contro...  
JP2002349507A
To provide an actuator position sensor connected to a hydraulic circuit for sensing the position of an actuator by sensing the flow of a working oil supplied to the actuator. The actuator position sensor 9 is equipped with an oil passage...  
JP2002349262A
To enhance working efficiency by eliminating troublesome operation such as restarting an engine by stopping the engine cone when switching normal/ reverse rotation of a cooling fan. A directional control valve 120 is provided with a norm...  
JP2002349501A
To provide a servo actuator control device capable of continuously disconnect a servo control valve 39 in abnormal condition with the switching operation obstructed from a control system certainly and allowing the servo control valve 39 ...  
JP2002349263A
To install an apparatus in a narrow installing space in a car body without taking the space area when switching the rotational direction of a cooling fan by a directional control valve, and to minimize a device cost by reducing the numbe...  
JP3344916B2  
JP2002323010A
To provide an actuator enabling to lessen the capacity of the full output of an electric motor and to reduce the weight and dimensions of the electric motor, compared with a conventional one.In the actuator comprising a hydraulic cylinde...  
JP2002323005A
To provide a hydraulic cylinder drive unit capable of preventing a piston and a hydraulic cylinder from receiving an influential shock even in the case that the piston hits the stroke-end of the cylinder, by reducing the amount of pressu...  
JP2002316300A
To provide a method of controlling a hydraulic cylinder which is capable of improving productivity by generating a high pressure in spite of a fluctuation in load and the method of controlling the hydraulic cylinder in a press brake.A di...  
JP2002313144A
To provide a servo-motor system which realizes curtailment of wiring man-hours and lowering of cost by simplifying connection structure between a servo-driver and a servo-motor.Three encoder signal lines 101, 102, 103 each sending encode...  
JP3335568B2  
JP2002297243A
To provide a spool type flow rate control valve which can be operated at high speed and high accuracy.This spool type flow rate control valve is provided with a static pressure air bearing for supporting valve elements 2-1 and 2-3 of a s...  
JP2002295404A
To provide a gas pressure actuator capable of compensating dynamic characteristics change according to a slider position and stably controlling a slider in a stroke.A control computing device 20 executes a step that the position of the s...  
JP2002276535A
To provide a variable vane mechanism capable of reducing rotating resistance.A servo actuator 10 is composed of a hydraulic cylinder 11 capable of changing the pitch angle of a blade 2, a two-way pump 30 connecting both discharging port ...  
JP2002266803A
To realize a structure capable of preventing the reaction force of the load from an output shaft side, from being transmitted to an input shaft side by a single torque generator.In this torque generator TG1 comprising an input shaft 110 ...  
JP3320907B2  
JP2002227804A
To provide a washing method for a servo valve capable of surely removing the hydraulic oil used in an operation verification test from the inside thereof in a short time.In this washing method for the servo valve 10 to remove the mineral...  

Matches 551 - 600 out of 3,876