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Patent Searching and Data


Matches 701 - 750 out of 3,875

Document Document Title
JP2000018203A
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...  
JP2998919B2
PURPOSE: To provide a compact rotary actuator with good torque transmission efficiency and log life. CONSTITUTION: This rotary actuator 11 is provided with a hollow cylinder tube 20, a piston 17 which slides inside the cylinder tube 20, ...  
JP2000009101A
To safely, positively carries out actuation, including steering, turning movement at an appropriate speed required in the entire travelling speed region. Each of hydraulic control systems, 15A, 15B, 15C has a hydraulic pump 17 independen...  
JPH11351201A
To suppress the wasteful consumption of a pressurized fluid by detecting the irreducible minimum control pressure to operate an actuator from the supply pressure of a pressurized fluid supply source to operate the actuator. A pressurized...  
JP2986328B2  
JP2986329B2  
JPH11325001A
To ensure a stable changeover control of a plurality of flow control valves, a highly accurate following control to a wide range of varied target value, and a stable control even in the case of disturbance. A flow control device is provi...  
JP2972555B2  
JPH11304033A
To provide a valve positioner with a small number of parts and simple in circuit constitution to increase distribution of an electric current to an electropneumatic converting module. A valve positioner having a digital computing circuit...  
JPH11512685A
(57) The summary power-steering control valve (22) is mutually equipped with the valve component (40, 42) of the inner side and the outside which can be rotated relatively. A power transfer assembly (114) transmits the power which resist...  
JPH11294401A
To reduce the generation of power, to reduce manufacturing cost through reduction of the number of parts, and besides to reduce size. This positioner comprises a first and second ON/OFF valves 44 and 46 connected in parallel to the outpu...  
JPH11294402A
To control hydraulic valve even at failure of a position detecting means by providing the position control means of a spool based on the output signal of a position setting means, and a failure judging means for the position control mean...  
JP2967077B2  
JP2963867B2
To provide a width changing device of a mold which executes the width change of the mold by enlarging the shifting stroke of a short side frame without stopping an operation so as to cast a cast slab of narrow width to wide width and to ...  
JPH11277207A
To effectively prevent an out-of-step by an abrupt load increase by correcting the opening/closing command of the opening/closing means installed to a pouring nozzle to a continuous casting mold by an out-of-step avoidance circuit when t...  
JPH11272332A
To provide a positioning cylinder device capable of easily changing stroke end position of a piston rod. The positioning cylinder device is provided with a cylinder body 1 including a piston 2 in its inside, a hollow piston rod 3 extende...  
JPH11272301A
To easily execute adjustment for removing dispersion while maintaining the independence of each system. Control circuits 2a to 2c are respectively provided with position sensors 41a, 41b for detecting the displacement variables of actuat...  
JP2952230B1
[Summary] Subject The multiplex system servo actuator control device with easy adjustment and multiplex system control device for variation dissolution are offered maintaining the independency between systems. Solution means The position...  
JPH11249746A
To perform stable servo control by fixing a servo gain corresponding to the position of the piston of a cylinder. A variable amplifier 20 for regulating the servo gain is provided between a control circuit 5 and a solenoid valve 3. The g...  
JPH11249704A
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...  
JPH11247807A
To avoid the stop of the whole control system of a servo valve by outputting the command signal to a spool driving means through a separately provided output means when an abnormality is present in a displacement sensor or a feedback mec...  
JPH11231902A
To provide a valve positioner capable of dealing with the abnormality of a microprocessor even in various control valves having respectively different parameters. The valve positioner having a microprocessor 1 for sending a deviation bet...  
JP2598238Y2  
JP2920883B2  
JP2919261B2  
JP2916847B2  
JPH11173305A
To obtain a servo valve having high reliability using a feedback mechanism having no effect of electromagnetic noise, by making a laser beam be incident onto a light reflecting part provided on a movable part connected to a spool, and al...  
JPH11171495A
To simplify a circuit (hardware) required in the light of feedback control over the. current value of a solenoid valve, and to secure its relatively high responsiveness, in an industrial vehicle. A central processing unit performs a comp...  
JPH11171496A
To simplify a circuit (hardware) required in the light of feedback control over a current value flowing into the solenoid of a solenoid valve. A central processing unit 54 controls the current value of a solenoid valve installed in a hyd...  
JPH11171499A
To control an electric current so stably in a transient area irrespective of any disturbance factor such as variations in supply voltage and solenoid resistance, etc., at the time of controlling the current value of a solenoid valve inst...  
JPH11171498A
To stabilize a current characteristic in the transient area of an electric current independently of any disturbance factors such as variations and so on in battery voltage and solenoid resistance, even if current value control over a sol...  
JPH11166655A
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...  
JPH11148502A
To eliminate problems with a conventional locating device for air cylinder such that stopping at the intended destination can not be obtained due to a delay caused by an air flow if the piston position is controlled only with air cylinde...  
JPH11142142A
To provide an automatic tracking system provided with an infrared wide angle sensor for improving the influence of noise generated by the separation from a device main body of a point to be measured capable of omitting work for initial c...  
JP2892451B2  
JPH11125204A
To improve the responsiveness of a device by simplifying the structure of an explosion-proof case and shortening a distance between a nozzle and a pneumatic amplifier. An attaching base 121 is attached to an outer wall of an explosion-pr...  
JPH11125203A
To facilitate the assembly works and electrical connecting works of a first and a second printed wiring boards into a case to improve an assembly work ability. The first and the second printed wiring boards 65A, 65B are attached to the b...  
JPH11125201A
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...  
JPH11125202A
To facilitate the assembly and adjustment of a feedback mechanism for improving their working ability. The peripheral wall of an explosion-proof case 6 is provided with a circular outer wall 81 being protruded outward and a circular inne...  
JPH11118526A
To accurately associate a component with small error of a size due to a vibration, impact or the like by facilitating altering work of an operation of a signal converter. A core 30 is disposed through an explosion-proof case 15. And, an ...  
JPH11108082A
To control a hydraulic actuator adequately, even when the operating amount of the electromagnetic actuator to a control current is changed. The output side of a control unit 17 is connected to the electromagnetic actuator 16 of a control...  
JPH1193903A
To perform positioning of a cylinder with a built-in valve for positioning control with high precision, to improve durability of a seal and a bearing, and to reduce size. A nut 2 is attached to the piston rod 1 of a hydraulic cylinder, a...  
JPH1151003A
To provide a capacity control system for a variable capacity motor to perform a slow motion without varying a command to a minimum pressure (a low speed) even when a command for a maximum pressure (a high speed) is outputted to a solenoi...  
JP2848900B2  
JPH1113087A
To improve the abrasion of a machine and riding comfortableness by allowing a position sensor to detect the position of a joystick and generate an operator command signal, and allowing a microprocessor to receive the boom angle, bucket a...  
JP2844926B2  
JP2844476B2  
JP2841893B2  
JPH10339301A
To improve responsiveness of a pneumatic equipment having waste time. In an opened condition of a switch 208, when a reference signal Sr of staircase shape is supplied, an offset signal Sd compensating waste time of a pneumatic equipment...  
JP2833954B2
PURPOSE: To improve durability in a head part having a spline by arranging a pair of projecting pieces to sandwich projections of a spool between them, and installing a pin in a position opposed to a sleeve pin fitting recessed groove of...  

Matches 701 - 750 out of 3,875