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Patent Searching and Data


Matches 601 - 650 out of 3,875

Document Document Title
JP2002227802A
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 QS...  
JP2002525515A
(57) The control system which controls the position of a summary object includes the integral-type actuator package which controls an actuator position using an electric motor drive servo pump. The electric motor operates by 定速 in th...  
JP2002210568A
To provide a reinforcing bar gas-welding equipment capable of appropriately solving a problem of decrease in the service life caused by the secular use of a hydraulic pump and a problem of deterioration of working fluid and degradation o...  
JP2002206503A
To achieve favorable maintenance performance, restrict size enlargement in an axial direction, and reduce high precision work positions in a hydraulic control valve.On the opposite side of a piston 17 to a hydraulic cylinder part 11, a r...  
JP2002522231A
(57) Two or more composition components of the strand guide classification (35) of the plurality invention / summary book] of continuity casting equipment, It is related with the equipment which liquid-pressure-controls especially a roll...  
JP2002188601A
To provide an apparatus and method accurately performing positional control of a hydraulic cylinder in a hydraulic driving device in which a leakage flow and non-linearity exist internally.The hydraulic driving device 1 comprises a servo...  
JP3294383B2
PURPOSE: To secure the closing performance of a control valve, etc., by the mechanical and structural improvement of a positioner and with no dependence on the adjustment of the positioner span. CONSTITUTION: The opening degree of a cont...  
JP2002149204A
To provide such a control device that the correspondence relation among parameters to be adjusted for multiple control specifications can be easily recognized and the response waveform of a controlled system can be easily and visually ad...  
JP2002147405A
To provide a hydraulic driver controlling speed driven by a hydraulic actuator so as to fluctuate it in accordance with fluctuation of load force acting on the hydraulic actuator and providing an optimal speed control to the fluctuation ...  
JP2002130202A
To supervise the malfunctions of a servo valve, in a servo valve control that gives command for the spool travel of the servo valve by performing a proportional control and an integral control with the input of a deviation between a cont...  
JP2002122102A
To provide a stroke control type or pressure control type pressing device for providing stable balance without providing an unsensed zone.The both sides of a piston 73 of an air cylinder 72 are connected with control valves 81 and 82, re...  
JP2002119917A
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...  
JP2002114196A
To ensure the operation of a trim control system of a full hydraulic horizontal stabilizer in a fixed-blade aircraft.This control system comprises a hydraulic motor 20, a flow control valve 18, a blocking bypass valve, a shut-off valve w...  
JP3274219B2
PURPOSE: To miniaturize an auxiliary force generating source by way of eliminating a centering spring by furnishing a locking piston to hold the other end side of a summing lever at a specified position at the time when no auxiliary forc...  
JP2002106506A
To make a communication valve compact and facilitate structure for an apparatus of communication and releasing from the communication by reducing the number of ports in the communication valve.An inflow port of pressured fluid in either ...  
JP2002106508A
To widen space in an operating compartment and to facilitate constitution of a hydraulic circuit by making it possible to exhaust pilot pressured oil of high pressure without employing a shuttle valve and a pressure sensor.A flow directi...  
JP3273109B2
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...  
JP2002081401A
To reduce valve opening pressure on the high pressure side against the low pressure side of a shuttle valve assembly in a fluid pressure device.In this fluid pressure device, a shuttle bore 35 is formed in a housing having high pressure ...  
JP3265380B2  
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...  
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...  
JP2002039106A
To provide a valve positioner capable of achieving high efficiency of automatic tuning by resetting a gain in a section to be controlled, in particular, disturbance of hysteresis acting greatly when performing automatic tuning in the val...  
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 ...  
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...  
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...  
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...  
JP3242115B2  
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...  
JP2001311401A
To provide a controlling method and a device for a hydraulic (oil hydraulic) servo valve that is capable of a wide range controlled-flow rate, highly accurate positioning-control and high response speed-control, and to also provide a dri...  
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...  
JP2001295802A
To reduce power consumption. An actuator includes a circulation fluid pressure circuit system, a first position control system, and a second position control system, and the circulation fluid pressure circuit system is provided with a fl...  
JP2001280301A
To provide a valve positioner for controlling a valve by automatically measuring the characteristics of portions to be controlled for automatic tuning. The valve positioner comprises an input signal for setting the opening of a valve, a ...  
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 ...  
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...  
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...  
JP2001515575A
(57) The control method for management of the liquid pressure type control system (10, 100) of a summary transport plane machine is indicated. This process that this method is a process in which scheduling of the motion of the function o...  
JP3210659B2  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
JP3187072B2  
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...  

Matches 601 - 650 out of 3,875