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Matches 451 - 500 out of 3,875

Document Document Title
JP3825737B2
To provide a precision positioning device capable of realizing high precision positioning control and load control in the Z-direction only by an air cylinder and one servo valve as mechanical elements of a driving source. The precision p...  
JP3814807B2
To provide a method and an apparatus of controlling a solenoid valve of an automatic transmission for a vehicle which is capable of regularly controlling a plunger even though movement of a plunger appeared by physical characteristic of ...  
JP2006220306A
To provide an electric hydraulic motor capable of avoiding that a return oil passage becomes very high pressure.The electric hydraulic motor is connected to a hydraulic actuator for revolving an output shaft 21 by the working oil pressur...  
JP3810140B2
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...  
JP3788604B2
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 ...  
JP2006153282A
To suppress the occurrence of a shock caused by changing different feedback signals without releasing the hydraulic pressure applied to a hydraulic actuator.The servo control apparatus comprises a control means 17 for outputting a contro...  
JP2006515409A
Although position control systems are used and the fluid operation type cylinder 12 is controlled, this has at least one fluid chamber 14 demarcated with the piston 18 which is located in the housing 20 and moves between the 1st end limi...  
JP3764692B2
To provide a gate opening/closing apparatus capable of dissolving defectiveness of having only the fixed lifting speed in a previously proposed device which opens/closes by a hydraulic cylinder instead of opening/closing a gate by an ord...  
JP2006090553A
To provide a method of quickly, easily and inexpensively assembling a servo valve in safety at a hydraulically-centered position.This method of assembling the servo valve at a position hydraulically centered with respect to an output sha...  
JP3761926B2
To quickly, easily and safely assemble a servo valve in a position centered under hydraulic pressure by centering the servo valve rotating a valve housing, pushing a preliminary assembling unit in the valve housing, and mutually pressing...  
JP3761246B2
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...  
JP3754583B2
To easily and accurately measure and identify static characteristics or a system parameter by using various hydraulic pressure equipment elements as targets. An arithmetic operation along a block diagrams constituted on a BDSP 4 and a co...  
JP3755963B2
To dissolve such an inconvenience that the operation of a hydraulic actuator becomes instable in the second half of a deceleration deviation range in the case of adopting an electromagnetic switching valve low in frequency characteristic...  
JP2006057724A
To enhance responsiveness by preventing the occurrence of a steady deviation, disturbance or the like even if the capacity of a pressure chamber in a cylinder largely varies.In the control method, an air cylinder 10 is controlled by exec...  
JP3749524B2  
JP2006040200A
To provide a position control system for suppressing oil leakage from the valves and performing accurate position control of the controlled object by controlling oil flow rate using poppet type solenoid valves, in the position control sy...  
JP2006029366A
To provide a position control method and a device for a hydraulic closed circuit improving position control by controlling thrust and speed of a single rod cylinder and a rod displacement position of the single rod cylinder.Pressure sens...  
JP3740230B2
To prevent shock at the time of braking by imputting the empirical value as the initial value of back pressure deceleration stroke and time lag, outputting a back pressure command signal when piston displacement satisfies the condition o...  
JP3725259B2
To reduce the occurrence of the strain of a response waveform to an input waveform and improve stability of a control system. A control device for a hydraulic exciter comprises a cylinder 4 to control the feed an discharge of working oil...  
JP2005329893A
To provide a power steering device allowing easy installation of a damper valve even if the constitution is such that a power cylinder is formed in a single piece in a housing and capable of constructing the device in a small size.The po...  
JP3718001B2
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...  
JP2005315279A
To provide a positioning device of small construction capable of being embodied in a simple constitution and reducing the center height loss.The positioning device is equipped with a cylinder device consisting of a cylinder, a hollow sha...  
JPWO2004007973A1
複数の電気流体圧アクチュエータの流体圧ア クチュエータのうち負荷圧力が大きい方に供 給される流体の量に不足が発生することを防 止できる電気流体圧アクチュエーション...  
JP3713877B2
To provide a speed control device for a tilt cylinder formed so as to reduce a shock in a stroke end by automatically decelerating a speed of the tilt cylinder when it comes adjacent to the stroke end, when a mast is tilt operated. Betwe...  
JP2005279763A
To provide a method for controlling an air servo gun cylinder which alleviates an impact when clamping a workpiece and also can pressurize the clamped workpiece with appropriate force in a short period of time.The air servo gun cylinder ...  
JP3701511B2
To relax a trangent in switching to a mechanical back up mode and to ensure a predetermined actuator speed in the mechanical back up mode. A restriction means 40 which can restrict a switching speed of a directional control valve 33 is p...  
JP2005240974A
To provide a fluid pressure actuator and its operation method for achieving high speed, suppressing generation of heat, and realizing dynamic control of a slant face angle of a swash plate, and also to provide a steering system of an air...  
JP2005526942A
The liquid pressure piston (310, 313; 410, 413) of the 1st (operation) and 2nd (stop) servo controls is used, and the method of accompanying for using [the equipment and there] where it acts as a mechanical stop implement by which the st...  
JP3688205B2
To provide a working vehicle capable of performing a lifting control with less shock even when a target height is changed while a working device is lifted to the target height in position control. A control is started with a start flow Q...  
JP2005524803A
The method and equipment which perform diagnosis in the pneuma tic control loop for control valves. The pressure sensor usually formed in the welding positioner (14) -- calling -- a displacement sensor (68, 84) is used that the operation...  
JP3683446B2
To provide a small electrohydraulic servo motor. An electrohydraulic servo motor 100 to rotate an output shaft 61 in accordance with a difference of revolution of an axis of ro rotation 41 and the output shaft 61 is furnished with displa...  
JP3675585B2
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...  
JP3664780B2
To smoothly decrease the speed of an actuator so as to stop by providing an electric pressure reducing valve, a pressure detector, a deceleration computing part and an output correcting means between at least one of pilot operating devic...  
JP3653387B2
To easily find the controller having high responsiveness by suppressing the increase of evaluating signals to be used for an evaluation expression. Concerning a control system for actuator composed of an actuator, actuator driving part a...  
JP2005514564A
The valve includes the housing (58) equipped with long type 筒穴 with a major axis, and the spool (80) carried so that it might move reciprocately within 筒穴 to a major axis and parallel. The housing (58) has a housing passage (62) ...  
JP3640414B2
PURPOSE: To provide a stable fluid pressure system by operating an input signal to a control value by a compensating means to which a primary and/or multilag modules are cascaded to a gain, and adding the operated signal to the output si...  
JP3640823B2
To provide a directly driving type electro-hydraulic servo valve with high controllability and also a servo controlling system which is excellent in controllability, has high reliability and is inexpensive. This system is provided with a...  
JP3635982B2
To increase current distribution for an electric-pneumatic conversion module by providing a variable impedance circuit having low impedance in a DC area and having high impedance in a digital communication frequency band, the electric-pn...  
JP3632004B2
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 act...  
JP2005069481A
To provide a simple control valve for a fluid-pressure operation device capable of facilitating manufacture and assembly with reduced cost.A solenoid operation valve 10 has an another pressure sensing port 30 communicating with an outlet...  
JP3626220B2  
JP3626234B2  
JP3613315B2  
JP2005009665A
To realize constant supplying of a discharge oil quantity of a hydraulic pump supplied to an actuator for driving a working device of a construction full equipment regardless of a load pressure of the actuator even at a low speed rotatio...  
JP2004353861A
To provide a method and an apparatus of controlling a solenoid valve of an automatic transmission for a vehicle which is capable of regularly controlling a plunger even though movement of a plunger appeared by physical characteristic of ...  
JP2004346978A
To provide a hydraulic system capable of controlling the position, force, and compliance of a hydraulic cylinder by a simple structure.This hydraulic system 10 comprises the hydraulic cylinder 300 having first and second acting chambers ...  
JP3596293B2  
JP2004301231A
To provide an actuator capable of providing linear motion and rotary motion to a movable part by use of a fluid pressure cylinder of simple structure.This actuator is provided with a cylinder 10, a piston body 50 comprising a piston head...  
JP2004301138A
To provide a hydraulic actuator capable of controlling a position of a driven part by one servo valve.This hydraulic actuator comprises a piston body 50 having a piston head 51 stored slidably in a hydraulic cylinder 10 in a non-contact ...  
JP2004301189A
To provide an inexpensive hydraulic control system which consumes a small amount of energy in all of speed control, force control, and accurate position control.When the position control, the speed control, and the force control of a hyd...  

Matches 451 - 500 out of 3,875