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公开(公告)号：US5115640A
公开(公告)日：1992-05-26
申请号：US703318
申请日：1991-05-20
摘要： An improved fluid controller (15) is provided having both rotary valving (47) actuated by the steering wheel (17), and axial valving (49) controlled by an electro-hydraulic valve (113) in response to a correction signal (31). In one embodiment, both the rotary valving and the axial valving are achieved by a primary valve member (63) and a follow-up valve member (65), and both the rotary and axial valving can be actuated simultaneously. Also disclosed is a logic control system for closed-loop control of the electro-hydraulic valve, whereby performance problems such as self-steering wander, drift, and others are substantially eliminated.
摘要翻译： 提供改进的流体控制器（15），其具有响应于校正信号（31）而由方向盘（17）致动的旋转阀（47）和由电动液压阀（113）控制的轴向阀（49） 。 在一个实施例中，旋转阀门和轴向阀门都通过主阀构件（63）和跟随阀构件（65）实现，并且旋转阀和轴向阀都可以同时致动。 还公开了一种用于电动液压阀的闭环控制的逻辑控制系统，由此基本上消除了诸如自转向漂移，漂移等性能问题。
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公开(公告)号：US3712339A
公开(公告)日：1973-01-23
申请号：US3712339D
申请日：1970-11-10
发明人： HIMMLER I , HIMMLER C , LESS ESSARTS LE ROI , BARTHOLOMAUS R , DIEHL D
IPC分类号： F15B13/043 , F15B9/03 , F15B9/07 , F15B9/12
CPC分类号： F15B13/0438 , Y10T137/86598 , Y10T137/86614
摘要： A baffle plate between two opposing nozzles is mounted on a flexible carrier which is secured to the armature of an electromagnet so that energization of the electromagnet by control signals causes variations of the throttle gaps between the nozzles and the baffle plate which causes a pressure differential between the discharge conduits of the nozzles. The discharge conduits communicate with chambers of a control slide valve which responds to the pressure differential. The pole shoes of the electromagnet are adjustable toward and away from the armature, and the nozzles are adjustable toward and away from the baffle plate so that irregular tolerances and outer influences on the control system can be compensated.
摘要翻译： 在两个相对的喷嘴之间的挡板安装在柔性载体上，该柔性载体固定到电磁体的电枢上，使得通过控制信号激励电磁体引起喷嘴和挡板之间的节气门间隙的变化， 喷嘴的排放管道。 排放管道与响应于压力差的控制滑阀的室连通。 电磁铁的极靴可以朝向和远离电枢调节，并且喷嘴可以朝向和远离挡板调节，从而可以补偿对控制系统的不规则误差和外部影响。
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公开(公告)号：US3461778A
公开(公告)日：1969-08-19
申请号：US3461778D
申请日：1967-09-22
申请人： HOBSON LTD H M
发明人： WESTBURY ROY , MALTBY PETER JOHN
CPC分类号： F15B9/03
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公开(公告)号：US3437101A
公开(公告)日：1969-04-08
申请号：US3437101D
申请日：1966-03-01
申请人： ABEX CORP
发明人： COAKLEY JAMES L , KUBILOS CHARLES A
IPC分类号： F15B13/043 , F15B13/16 , F15B9/03 , F15B9/07 , F15B9/12
CPC分类号： F15B13/16 , F15B13/043 , F15B13/0436 , Y10T137/2322 , Y10T137/2409 , Y10T137/86606 , Y10T137/86614
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公开(公告)号：US3362296A
公开(公告)日：1968-01-09
申请号：US48133765
申请日：1965-08-20
申请人： BELL AEROSPACE CORP
发明人： GRAY SAMUEL A
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6.发明授权Positioning control system for remote elements, including hydraulic transmission units 失效远程元件定位控制系统，包括液压传动装置
公开(公告)号：US2613502A
公开(公告)日：1952-10-14
申请号：US64342046
申请日：1946-01-25
申请人： ASKANIA REGULATOR CO
IPC分类号： F15B9/07
CPC分类号： F15B9/07
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公开(公告)号：US11408443B2
公开(公告)日：2022-08-09
申请号：US16512764
申请日：2019-07-16
发明人： Zbigniew Jaśkiewicz
IPC分类号： F15B13/04 , F15B9/07 , F15B13/043 , F15B13/044
摘要： A servovalve includes a supply port and a control port; a moveable valve spool arranged to regulate flow of fluid from the supply port to the control port in response to a control signal and a drive assembly configured to axially move the valve spool relative to the fluid transfer assembly in response to the control signal to regulate the fluid flow; wherein the drive assembly comprises a first fluid channel providing a flow path for fluid from the supply port to a first end of the spool and provided with a first flow control orifice. The assembly also includes a second fluid channel providing a rotating element provided with a cam profile located between the first flow control orifice and the second flow control orifice. The assembly also includes drive means arranged to rotate the rotating element.
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公开(公告)号：US10731673B2
公开(公告)日：2020-08-04
申请号：US15927403
申请日：2018-03-21
发明人： Marcin Cis , Sebastian Zuraw
IPC分类号： F16K31/128 , F15B13/043 , F15B9/07 , F15B13/04 , F15B21/041 , F16K11/07
摘要： A servovalve includes a fluid transfer valve assembly comprising a supply port and a control port and a moveable valve spool arranged to regulate flow of fluid from the supply port to the control port in response to a control signal. The servovalve also includes a jet pipe assembly configured to direct fluid to the ends of the spool to axially move the valve spool relative to the fluid transfer assembly in response to the control signal to regulate the fluid flow. The jet pipe assembly comprises a jet pipe a connector header fluidly connecting the jet pipe to a nozzle. The spool has one or more openings 28 is provided in the spool such that fluid from the supply port flows into the interior of the spool and into the jet pipe.
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公开(公告)号：US4561470A
公开(公告)日：1985-12-31
申请号：US724357
申请日：1985-04-18
IPC分类号： F15B13/043 , F15B18/00 , F15B9/07 , F15B20/00
CPC分类号： F15B18/00 , F15B13/043 , Y10T137/8659 , Y10T137/86614
摘要： A control system for a fluid actuated control member is disclosed which uizes a pair of electrically controlled servo valves to control the supply of servo pressure fluid to a control valve piston. The pair of servo valves are electrically controlled such that, under normal conditions, one of the servo valves is operative to supply the servo pressure signal, while the other servo valve remains in an inert, open position. Upon the detection of a malfunction in the operative servo valve, electrical switches render the malfunctioning valve inert and transfer the operative capabilities to the second servo valve. The hydraulic control system does retain 100% of its performance capabilities following a malfunction of the initial servo valve.
摘要翻译： 公开了一种用于流体致动的控制构件的控制系统，其利用一对电控伺服阀来控制向控制阀活塞供应伺服压力流体。 一对伺服阀被电控制，使得在正常状态下，一个伺服阀可操作以提供伺服压力信号，而另一个伺服阀保持在惰性的打开位置。 当检测到操作伺服阀的故障时，电气开关使得故障阀处于惰性状态并将操作能力传递给第二伺服阀。 在初始伺服阀发生故障后，液压控制系统确保其性能的100％。
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公开(公告)号：US3771541A
公开(公告)日：1973-11-13
申请号：US3771541D
申请日：1971-04-30
申请人： BENDIX CORP
发明人： ABBOTT R
CPC分类号： F15B5/003 , F15B9/07 , Y10T137/2409 , Y10T137/2663
摘要： An electrohydraulic servo valve design is described having a pair of parallel-directed nozzles connected through conduits to a source of operating fluid under pressure with a load piston connected to the conduits such that its ends communicate with the pressure immediately upstream of the nozzles. A torque motor operates a flapper valve to restrict one nozzle and reduce the restriction of the other to vary the conduit pressure to create a control pressure differential across the load piston. Connected between each of the conduits and the fluid pressure source is a pair of orifices with a reed valve positioned therebetween and supported such that it responds to the control pressure differential to further restrict one of the pair of orifices while reducing the restriction of the other. In this manner, pressure in one conduit having the higher pressure is communicated to the reed valve which moves away from its corresponding orifice to permit the pressure in that one conduit to increase to a value even closer to the supply pressure than before. At the same time the pressure in the other conduit which was reduced is further reduced as the reed valve further restricts the area of its corresponding orifice. Thus, for a servo valve of a given size, the described pair of orifices and adjacent reed valve operate to substantially increase the pressure differential across the load for a given displacement of the flapper valve near null position.
摘要翻译： 描述了一种电动液压伺服阀设计，其具有通过导管连接到压力下的工作流体源的一对平行定向喷嘴，其中负载活塞连接到导管，使得其端部与紧邻喷嘴上游的压力连通。 扭矩马达操作挡板阀以限制一个喷嘴并且减小另一个喷嘴的限制，以改变导管压力以在负载活塞上产生控制压力差。 连接在每个导管和流体压力源之间的是一对孔，其间设置有簧片阀，并且被支撑，使得其响应于控制压力差，以进一步限制该对孔中的一个，同时减少另一个的限制。 以这种方式，具有较高压力的一个导管中的压力被传递到离开其对应孔口的簧片阀，以允许该导管中的压力增加到比以前更接近供给压力的值。 同时，当簧片阀进一步限制其对应孔口的面积时，另一个导管中被压下的压力进一步降低。 因此，对于给定尺寸的伺服阀，所描述的一对孔口和相邻的簧片阀操作以基本上增加在靠近零位置的挡板阀的给定位移的负载上的压力差。
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