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JP3265380B2 |
The invention relates to a method for regulating the value of the jump (surge) of a servomotor for servo-assisted braking, in which servomotor are movably mounted a hollow servopiston (20) dividing the servomotor into a forward chamber (...
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JP3265020B2 |
PURPOSE: To realize a hydraulic servo system with high speed and with high accuracy without generating any oil hammer phenomenon. CONSTITUTION: In a servo valve control device for feedback-controlling operation of a servo valve 1 in a hy...
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JP2002054607A |
To provide a drain circuit for turning motors for returning drain from plural turning motors to a hydraulic oil tank in which sludge or dust generated in one turning motor is not carried into the other turning motor.A thickness and a len...
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JP2002021425A |
To provide an operation device for opening and shutting an automobile panel applicable to various controlling states and/or individual user's required conditions.For the operation device for opening and shutting a hinge automobile panel ...
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JP3249025B2 |
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...
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JP3247617B2 |
To prevent generation of a hunting phenomenon by providing a solenoid valve. A hydraulic pump 2 driven by an electrically operated servo motor 1 capable of rotating in both directions is provided, and a rod side port 14 of one rod type h...
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JP2002005102A |
To provide a force control device using air pressure excellent in responsiveness and capable of accurately generating driving force of an optical value.This force control device using air pressure is provided with an electric-air actuato...
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JP3242115B2 |
PCT No. PCT/EP96/04156 Sec. 371 Date Mar. 30, 1998 Sec. 102(e) Date Mar. 30, 1998 PCT Filed Sep. 24, 1996 PCT Pub. No. WO97/13074 PCT Pub. Date Apr. 10, 1997The invention concerns an electrohydraulic control valve arrangement (10) for co...
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JP2001336504A |
To provide a control device capable of controlling the position of a slider with high accuracy, for a gas pressure actuator causing the slider floated up-by a static pressure bearing to be driven by differential pressure by use of two do...
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JP3223433B2 |
PURPOSE: To separate a valve opening detector so as to cause automatic switching to the structure of an electropneumatic converter so that the valve opening of an adjusting valve may be continuously controlled, even if any abnormal condi...
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JP3216371B2 |
PURPOSE: To realize both of pressure intensification of electric control pressure and fail-safe against abnormality of the electric control pressure by providing a pressure intensification control mechanism between a master cylinder, an ...
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JP2001271801A |
To improve responsiveness and speed controllability of a servo system for a pneumatic actuator. This pneumatic actuator is so structured, that a pressure chamber is formed between the periphery of a guide shaft 11 and a slider 12, a barr...
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JP3213247B2 |
To lineary vary a degree of an opening of a control valve and actually remove a deadband of a valve body. A hydraulic cylinder controller has a spool valve 6 having a circular opening, a controller 21 for outputting a control pulse signa...
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JP2001515575A |
A control method for managing a hydraulic control system of a vehicle is disclosed. The method includes the steps of scheduling the invocation of a plurality of vehicle functions through system operations, which functions are used for op...
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JP3210659B2 |
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JP3204061B2 |
To secure high speed control while low consumption of power is being maintained with process loading for a microprocessor lowered by separating a high speed operating part from a low speed operating part. Judging from controlling a valve...
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JP3204058B2 |
To easily grasp the trouble or the ambient environmental data of a valve by providing an auxiliary input terminal to which a signal from various sensors can be inputted to transmit a sensor signal to a host system through a field bus. Th...
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JP3202493B2 |
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...
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JP3201555B2 |
PURPOSE: To realize the optimum stability and responsiveness by generating a starting signal for such as setting response measurement or outputting a specified set value, measuring respective time differences from a reference time to the...
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JP3199783B2 |
PURPOSE: To improve performance of a fluid circuit wherein a fluid pressure sensor is used for detecting a pressure in a fluid flow passage by replacing a part of the fluid circuit with an impedance circuit. CONSTITUTION: Fluid pressures...
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JP2001221201A |
To provide an electric-pneumatic positioner capable of accurately controlling the valve opening even with small operation by generating a signal for controlling the valve with a set point signal Sp and displacement of a stem, and applyin...
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JP2001214903A |
To provide a device capable of simultaneously attaining high efficiency and high control performance, in the hydraulic drive unit using a hydraulic cylinder.A separate oil hydraulic pump 21, 22 is connected respectively to an extending/c...
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JP3192465B2 |
PURPOSE: To stabilize control capacity by calculating permissible rotary angle with ratio of permissible flow capacity of a secondary unit that is calculated from nominal capacity and velocity of a primary unit to the measured velocity o...
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JP3191332B2 |
PURPOSE: To improve responsiveness of operation while maintaining reliability of operation and improve responsiveness of operation by determining an electromagnetic opening/closing valve to be operated by a controller, and calculating an...
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JP3191336B2 |
PURPOSE: To improve the responsiveness of a device by forming a controller in such a way as to determine a duty factor at the time of operating a first and a second solenoid switching valves according to the capacity of a pressure chambe...
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JP3189967B2 |
PURPOSE: To enable abnormality to be informed to the outside as well as to enable an electropneumatic position to be safely operated in relation to abnormality of a valve opening detecting unit by switching the output of a pressure conve...
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JP3187072B2 |
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JP2001165102A |
To provide a small-sized electrohydraulic survomotor capable of controlling surely the spool position in the axial direction of a spool without being influenced by the temperature of a hydraulic oil.This electrohydraulic survomotor 100 f...
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JP2001153101A |
To provide a servo mechanism for shortening a control time and increasing positioning accuracy, etc.The respective control ports C1 and C2 of servo valves 11 and 21 are connected to the mold closing port 32 and the mold opening port 33 o...
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JP3172961B2 |
To easily perform maintenance of an electropneumatic converter. An opening part 16-2 is formed on a wall surface of an explosion-proof case 16, and an electropneumatic converter 3 is fixed to the inside of an explosion proof cover 16-3 t...
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JP3171473B2 |
PURPOSE: To provide smooth control switching without any hunting phenomenon by providing a closed loop system for flow rate control and a closed loop system for pressure control, and by inputting to an amplifier the smaller one out of ou...
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JP3165448B2 |
A power steering control valve (22) includes inner and outer valve members (40 and 42) which are rotatable relative to each other. A force transmitting assembly (114) is operable to transmit force which resists relative rotation between ...
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JP2001124003A |
To provide a hydraulic drive servo system capable of realizing both of slow speed and highly accurate servo control for accurate machining and rapid feed control for reducing cycle time. A movable cylinder 10-1 in a cylinder mechanism 10...
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JP2001123939A |
To substitute a step motor in a control mechanism of a variable displacement inclined shaft type hydraulic device with a proportional solenoid fluid valve operationally connected to a computer. A pivot member 14 for supporting a cylinder...
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JP2001116144A |
To provide a bent axis type hydraulic unit of the oscillating yoke type. A unique ball joint for actuating the servo piston of a bent axis unit is provided. The ball joint includes an actuator rod having a spherical outer surface at one ...
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JP3162139B2 |
PURPOSE: To reduce the required number of hydraulic circuits and to prevent an actuator from its upsizing, by combining an electrically hydraulic air servo control device with a local pumping group. CONSTITUTION: A hydraulic actuator 1 c...
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JP2001090704A |
To eliminate heating of a liquid transmitting drive force and drag. This driving gear, comprising a first servomotor 10a, first hydraulic pump 20a connected thereto, and an actuator 4 connected capable of communication therewith, is prov...
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JP3149031B2 |
PURPOSE: To improve efficiency of utilizing energy of a hydraulic control actuator for an aircraft. CONSTITUTION: An over center variable displacement oil hydraulic motor 1 is connected to a swivel rotary shaft of a control surface 26 to...
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JP2001503834A |
Electro-pneumatic positioner with a pneumatically driven dual-chamber actuator having a pneumatic main air intake valve and a pneumatic main air discharge valve attached to a pressure pipe of the actuator. The positioner may also include...
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JP2001065501A |
To drive a hydraulic motor by reducing a pressure loss caused by the restriction of a servo valve without wasting an operating horse power of a hydraulic pump. A hydraulic driving device which is provided with a servo valve 25 that drive...
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JP3146240B2 |
PURPOSE: To perform feedback control with high accuracy by correcting a measurement error in a flow sensor due to temperature change. CONSTITUTION: This device is provided with a flow control valve 2 which is installed in a working oil p...
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JP3141007B2 |
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JP3138028B2 |
PURPOSE: To perform feedback control with high accuracy by correcting a measurement error in a flow sensor due to temperature change. CONSTITUTION: This device is provided with a flow rate control valve 2 which is installed in a working ...
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JP2001050201A |
To prevent excessive force acting from an actuator to an equipment by performing a feedback control for an operating part based on positional information on the detected operating part and pressure information on pressure oil for operati...
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JP2000337305A |
To avoid collision of a piston to its end of stroke.A hydraulic cylinder operation control device is arranged so that a movable element 105 is moved under control inside a hydraulic motor 110 and includes a lever device 125 to generate a...
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JP2000301067A |
To make it possible to embody the more excellent reproducibility of exciting waveforms by compensating the change in the dynamic characteristics of a hydraulic cylinder which is the exciting source of a hydraulic exciting machine. The hy...
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JP2000276205A |
To compensate stability so as not to make the maximal value of a gain great so much while improving quick responsiveness in control for the steering surface of an airplane or the like. Concerning the feedback controller provided with a c...
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JP2000250636A |
To provide a hydraulic system and its starting method which can minimize the shaking of a hydraulic actuator that is caused when the hydraulic system is started. A hydraulic system 10 includes a hydraulic unit 20, a hydraulic cylinder 40...
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JP3086395B2 |
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JP2000234978A |
To provide a differential-pressure detecting device which can be miniaturized easily and which is of high reliability and to provide a fluid-pressure actuator which uses the detecting device and which is of high reliability. In this diff...
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