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Patent Searching and Data


Matches 901 - 950 out of 3,875

Document Document Title
JP2559919B2  
JPH08320001A
To provide a switching device of low price, reliability, and with few components by connecting a pilot valve to a feed conduit and a discharge conduit, connecting first and second openable check valves to first and second check valves, a...  
JPH08314502A
PURPOSE: To effectively attenuate a limit cycle by setting a compensator increasing input quantity through the use of the inverse function of a blind sector estimated by means of monitoring the limit cycle. CONSTITUTION: A target value y...  
JPH08303413A
PURPOSE: To enhance versatility by selecting operation and action modes of an air cylinder, by setting acceleration times in X, Y directions for automatic operation mode, deceleration time and low speed feed pressure, by performing calcu...  
JP2516315Y2  
JPH08291802A
PURPOSE: To provide a rotary actuator which has superior transmission efficiency of torque, has a compact size and long life, and easily detect the rotation angle. CONSTITUTION: A rotary actuator is provided with a piston 17 having a fem...  
JPH081567U
[A subject] An electromagnetic valve switching control device which can realize stable cycle operation without controlling dynamically the attainment time of each time of repetition operation itself in an open loop control method, and be...  
JPH08286755A
To disclose the controller for automatically controlling work elements of an earth work machine. The work element includes a bucket 110 having a couple of pinch arms 115 and the pinch arms 115 in pairs are operated to be controlled by a ...  
JPH08278161A
PURPOSE: To make a piston position detectable with high accuracy at plural positions in the midway. CONSTITUTION: A section-elliptocal cylinder tube 2 is provided with an elliptical section piston 11 turnably. In addition, a rotational d...  
JPH08270605A
PURPOSE: To reduce cost by forming a structure simplified into small size in a positioning device of an air cylinder. CONSTITUTION: A solenoid valve 18, arranged between the first cylinder chamber 12 and an air pump 16 to switch air supp...  
JPH08270826A
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...  
JPH08256517A
PURPOSE: To suppress excessive acceleration of a tilling apparatus and to perform smooth control of lifting motion. CONSTITUTION: This lift controlling apparatus is provided with a positional deviation detection means A to get the deviat...  
JPH08261203A
PURPOSE: To provide an inexpensive rotation controller for a rotary actuator for large output by enabling the controller to control the rotation of a motor to thereby accurately control the rotation speed or rotation angle of a hydraulic...  
JPH08240205A
PURPOSE: To implement a smooth control for controlling a plurality of solenoid selector valves by setting the opening time of each solenoid selector valve for a train of a plurality of unit width pulses and shifting a rise position of th...  
JPH08232904A
PURPOSE: To provide a servo device for use in the radiation field such as nuclear reactors, which is capable of improving the danger of contaminating water, reduction in output density due to mechanical limitation, and the limitation of ...  
JPH08232908A
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...  
JPH08227317A
To attain tuning without any manual movement of a servo valve, any use of a switch or a potentiometer, or any removal of an inputting and outputting substrate. A position control circuit 70 is provided with a demodulator 22 having an aut...  
JPH08219322A
PURPOSE: To provide a valve opening and closing device of a steam governing valve, which makes it possible to open and close a lever-operated type steam governing valve without obstruction in a state where the body of an electro- hydraul...  
JPH08219305A
PURPOSE: To diagnose and forecast the abnormality of the operation part of an adjusting valve, by changing the gain of the oscillation limit of a control computing element, in a condition where an input signal is introduced, into upper a...  
JPH08210302A
PURPOSE: To locate a cylinder by taking in the displacement and speed of a cylinder, and computing a predicted overrun distance for this time from a predicted overrun distance for the lest time, cylinder speed at the time of previous bra...  
JPH08210309A
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, ...  
JPH08206820A
PURPOSE: To reduce the labor of a worker, to improve the safety in the work under high temp., to save the consumption of much energy and to improve the efficiency of the workability. CONSTITUTION: A cleaning device is arranged with a rot...  
JP2521206B2
PURPOSE: To make efficient microadjustment of a quantity of oil and to improve rolling accuracy by setting a clearance between rolls of a rolling roll, comparing a set value with a measured value and calculating them and mounting two flo...  
JPH08200303A
PURPOSE: To enable control with high speed and high accuracy by communicating a pressure chamber with a pump port and a tank port according to a spool displacing direction, and communicating an actuator port with the pump port and the ta...  
JP2520187B2  
JPH08174299A
PURPOSE: To suitably execute the control to restrict the overshoot of a ram in the case of the load being eliminated suddenly like punching of using the ram of a hydraulic press. CONSTITUTION: Four proportional sheet valves V1 to V4 are ...  
JP2510667B2  
JP2510218B2  
JP2510419B2  
JPH08161053A
PURPOSE: To efficiently use a hydraulic supply system by reducing respective output signals, respective target signals, or respective deviation signals of command input means in proportion to the ratio of the overall flow rate signal to ...  
JPH08157027A
PURPOSE: To remarkably improve the accuracy in locating the dropping position of a plate workpiece sucked and transported by a vacuum suction transport endless belt to dispense with the provision of attachments like arranging devices and...  
JPH08152001A
PURPOSE: To provide a cylindrical proportional control valve which performs smooth microdrive, improves durability, and reduces size. CONSTITUTION: A cylindrical proportional control valve comprises a pneumatic cylinder 2 having a piston...  
JPH08145006A
PURPOSE: To provide a hydraulic servo device wherein the relation between input and output is always linearized, and the displacement of a load against a target value signal is completely linearized. CONSTITUTION: In a hydraulic servo se...  
JPH08135601A
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...  
JPH08129401A
PURPOSE: To eliminate the fear of a serious accident of plant by providing a changeover switch to transmit a drive signal to an actuator by the output of an arithmetic means that operates the deviation between the value of electronic vol...  
JPH08128408A
PURPOSE: To provide a sensor applied to a hydraulic system having two or more actuators and capable of sensing the presence of an actuator single or composite operation. CONSTITUTION: An actuator operation signal sensor is applied to a h...  
JPH08116766A
PURPOSE: To provide a method for carrying out feed back control so as not to cause control error by change in temperature when lifting and lowering control of reaping pretreating apparatus in a general purpose combine is carried out by p...  
JPH08121404A
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...  
JPH08109904A
PURPOSE: To cope with the large stroke of an input rod by arranging oil passages for feeding and discharging oil in the axial direction in a piston part and oil passages for feeding and discharging oil in the axial direction of its input...  
JPH08100801A
PURPOSE: To improve stability and responsiveness of valve position control with inexpensive and simple constitution by providing a mechanism for continu ously regulating a spring constant while screwing to one end of the coil spring of a...  
JPH0893704A
PURPOSE: To stabilize a system even when a load pressure difference is zero, and prevent a waveform variation by eliminating looseness of the system. CONSTITUTION: In a hydraulic servo system provided with a controller 1 to make an objec...  
JPH0826884B2  
JPH0861302A
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...  
JPH0820024B2  
JPH0816481B2  
JPH0849660A
PURPOSE: To improve control precision and reliability. CONSTITUTION: A mechanical flow rate detecting mechanism 6 is located in the delivery line of a hydraulic pump 1. A feedback sleeve 7 to which the output member thereof is link-coupl...  
JPH0849659A
PURPOSE: To reduce the occurrence of electrical processing for control of a proportional solenoid valve, to reduce the occurrence of a failure in operation, and to improve reliability by providing constitution wherein mechanical feedback...  
JPH0842506A
PURPOSE: To provide an electropneumatic converter whose part items are small in number, which is excellent in assembling and a disposing space, can attain size reduction and carry out zero point adjustment with a high accuracy by coarse ...  
JPH0842277A
PURPOSE: To supply operating fluid to a hydraulic cylinder and to promote work efficiency by switching over a solenoid valve at optimum switching timing with a controller in accordance with detected value of a piston position of the hydr...  
JPH0842505A
PURPOSE: To lower the required processing accuracy for parts by maintaining a mechanical balance through the fulcrum of a beam in an electropneumatic converter with a simple structure for elimination of inclining characteristics due to a...  

Matches 901 - 950 out of 3,875