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Matches 501 - 550 out of 3,876

Document Document Title
JP2004301188A
To provide a hydraulic control system which can smoothly and timely carry out transition from speed control to position control.The hydraulic control system comprises an actuator 10, a pump 20, an electric motor 30, a servo controller 70...  
JP2004286122A
To provide a control method using minimum control equipment required for quickly and smoothly controlling a cylinder device using servo valves, and its system.In this high-speed driving method for a pressure cylinder 10, its system compr...  
JP2004268648A
To provide a body lifting speed control device for a dump truck capable of relieving an impact during the switching operation of a cylinder even when the cylinder which is of two-stage stroke type is used as a hydraulic cylinder.Speed co...  
JP2004268649A
To provide a body lifting speed control device for a dump truck capable of making a body lifting speed uniform at the time of switching a cylinder even when the cylinder which is of two-stage stroke type is used as a hydraulic cylinder.S...  
JP2004270923A
To provide a technique related to a hydraulic system, and in particular to a method for controlling a hydraulic system.An actuator 16 is part of a hydraulic circuit branch that has a first electrohydraulic proportional valve 21 connectin...  
JP2004270870A
To provide a proportional valve and a servo valve with a static pressure bearing mechanism which can perform highly precise position control, and a method of forming a static pressure bearing.The static pressure bearings are provided on ...  
JP2004263645A
To provide a hydraulic device allowing stable pushing.The hydraulic device has a hydraulic pump 1 that is driven by an electric motor 6 and is rotatable in both directions, and both ports 14 and 16 of a hydraulic cylinder 12 are connecte...  
JP2004251331A
To provide a fluid control method for improving the control accuracy when controlling a driving device by using fluid.The hydraulic pressure to be supplied to a hydraulic cylinder 1 is controlled by a plurality of solenoid control valves...  
JP3563365B2
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 cylind...  
JP3560564B2
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 ...  
JP3558388B2
PURPOSE: To effectively utilize the stroke in a single rod cylinder by selecting a condition feedback vector, stored in a memory means in accordance with the elasticity direction of a single rod cylinder, to operate control input from th...  
JP3556098B2
To provide a controller capable of starting up a hydraulic actuator with little generation of impact, allowing the actuator to rapidly reach a control target position, and then stopping it with little generation of impact. An actuator is...  
JP3554899B2  
JP3554448B2  
JP2004524154A
The controller for the imbalanced weight and the modulating device in 起振 equipment has a regulation piston (3) for changing the relative position of the imbalanced weight in 起振 equipment (1), and this regulation piston is connect...  
JP2004211669A
To provide a servo valve control device having a servo valve control device capable of performing normal control without occurrence of a valve opening control deviation even when disturbance occurs at the input end of the servo valve.The...  
JP3544868B2
To stably control an extrusion rate with high accuracy by determining a control gain in a control system for adjusting a delivery of a hydraulic pump based on a mathematical model expression, using the mathematical model expression repre...  
JP3545111B2
To obtain sufficient holding force (braking force) at the time when a command means indicates neutral in a constant pressure controlled liquid hydraulic driven device. A first cam 27 shifts a directional control valve 20 to neutral at th...  
JP2004521283A
It is the method and equipment which control a valve / actuator equipment by generating two or more independent correction control signals. Two or more above-mentioned independent correction control signals have answered two or more corr...  
JP2004169914A
To provide a hydraulic drive cook system that can be endured for the usage even under the severe environment of pitching and rolling like a boat.A hydraulic actuator that operates at least one cook and a operation gear of the hydraulic a...  
JP2004160529A
To provide a double acting hydraulic press with which the operation of a plurality of cylinders reduces the consumption of an operating oil by controlling both uses of rotation control of a hydraulic pump and a control servo-valve in a p...  
JP2004156785A
To provide a small valve control unit kept in a small space without failing in severe environment like a marine vessel.Each of at least two valves is operated by each hydraulic actuator which is controlled by a control device. Each contr...  
JP3532396B2
To lessen a packing volume for a positioner, and facilitate the replacement work for a feedback lever, and improve the durability of a spring by making a fixed pressing force always act on a connecting pin provided in the working shaft o...  
JP2004150400A
To continuously operate an apparatus for an engine and to improve reliability.This device is provided with a positive pressure diaphragm actuator 21 having a tip of a piston rod 21a connected to the apparatuses 12 and 13 for the engine, ...  
JP3530662B2
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...  
JP3529973B2
To provide a control device for a pressure-response operation type actuator to realize high speed responsiveness without damaging durability of an object to be driven. A control device for a pressure-response operation type actuator is p...  
JP2004144196A
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 po...  
JP2004132416A
To improve the responsiveness of a rod, and to highly accurately set a load to be applied to the rod.An operation rod 12 having a sucking bit 19 on the tip is arranged in a piston able to freely reciprocate in an actuator body 11. A pres...  
JP3523586B2
To smoothly give vibration into soil during propelling of a vibration generating device by preventing a piston from being retreated to stroke end of the rear or being protruded to the stroke end of the front by a magnitude of static prop...  
JP3521784B2
To clamp one of members to be butted against each other while automatically centering the same with respect to the other of the member without changing a clamp force with the use of a simple structure. A pair of cylinders 4, 5 are oppose...  
JP3511458B2
To reduce work load and eliminate mistake in setting up in a work site and periodic maintenance. An automatic setting command is given to an electropneumatic positoner. Thereby, in the electropneumatic positoner, in the case of convertin...  
JP3509264B2
PURPOSE: To eliminate defects related to play, friction, rattling noise, etc., and eliminate the machining process of an input shaft, embrittlement of materials related thereto, and ball component groups by arranging an element having on...  
JP2004068663A
To provide a pressure generating device for reducing the changing frequency of a seal.The pressure generating device increases hydraulic pressure in a hydraulic pressure chamber 4 in a cylinder 1 with a rod 2 slid and pushed into the cyl...  
JP2004052645A
To provide an analog control circuit for driving a fan, easy in troubleshooting and maintenance, and efficiently cooling the liquid with a simple constitution by continuously rotating the fan by using an inexpensive analog circuit.This a...  
JP3494858B2
To hardly disconnect oil passages even in a pilot shaft of small diameter and to provide sufficient control responsiveness by providing at least two pairs of oil passages for driving a piston in the same direction on the piston and the p...  
JP3490561B2
To prevent a peak from appearing in a control input at the time of step response and to stabilize control even when the peculiar vibration number of control system is fluctuated by constituting a hydraulic cylinder stroke servo system by...  
JP3481277B2
PURPOSE: To improve the accuracy of speed control for a hydraulic actuator, reduce shock at braking time, lower the lowest value of driving force, and simplify the structure of a device. CONSTITUTION: Discharge ports of two variable disp...  
JP3473724B2
To enable any leakage from a regulating valve to the detected by outputting a diagnostic signal for increasing/decreasing an air pressure by means of a start signal, computing a quickness difference in variation between a reference signa...  
JP3474353B2
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...  
JP2003343504A
To provide a water pressure driving apparatus having a water pressure cylinder driven by working water sent from a water pressure pump, which controls the water pressure pump and cylinder with small control operating force, and improves ...  
JP2003336602A
To facilitate installation to an existing servo cylinder in spite of small size.Rotational drive force from a control motor 71 and rotation force of a detection roller 87 as feedback force rotating by movement of a piston rod 36 are tran...  
JP3468963B2
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 ...  
JP2003333876A
To provide an actuator driving device using a motor as an actuator which mildly responds to the operation of a lever in an intermediate range and swiftly responds to the quick operation of the lever.Construction equipment comprises the m...  
JP2003329003A
To give a damping action on each joint of a robot and accomplish simultaneously lightweight and high power output of the robot having a tendency being large in scale.A gas pressure type actuator operates a movable portion 1 by opening an...  
JP2003308101A
To allow a user to be released from analyzing data, and to easily judge which parameter should be considered although there are a lot of evaluation parameters.An off-line diagnostic system is provided with a self- characteristic measurin...  
JP2003285797A
To provide a method and a device for driving power steering for a ship to suppress an engine output loss by steering a ship with a necessary and sufficient hydraulic drive force by a hydraulic cylinder, highly efficiently driving the hyd...  
JP2003278703A
To eliminate the need for using a ball screw and a ball nut and to inexpensively configure an electro-hydraulic servo cylinder in the electro- hydraulic servo cylinder having a valve structure for switching an oil channel inside a piston...  
JP2003268750A
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...  
JP2003269408A
To provide an actuator assembly comprising a synchronized hydraulic actuator.The actuator assembly comprises a master actuator 10 and at least one slave actuator 20 having a cylinder 200 containing a piston 202 defining two chambers in t...  
JP2003269411A
To provide a valve capable of allowing a spool to constantly exist on the same position.The valve has a spool with an actuator mounted on one end part. The actuator has a piston connected to the spool, and defines a first control chamber...  

Matches 501 - 550 out of 3,876