专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP0280980A1 Electrohydraulic Servo system 失效
标题翻译： Elektrohydraulisches服务系统。
公开(公告)号：EP0280980A1
公开(公告)日：1988-09-07
申请号：EP88102539.9
申请日：1988-02-22
申请人： Vickers Incorporated
发明人： Taplin, Lael Brent
IPC分类号： G01D5/48 , F15B15/28
CPC分类号： F15B15/2869 , F15B15/28
摘要： An electrohydraulic servo system which includes an actuator with a cylinder (18) and piston (22), a servo valve (12) and control electronics (26) responsive to piston position for generating the valve control signals. A variable frequency rf generator (34) is coupled through associated directional couplers (40, 42) to a pair of antennas (36, 38) which are positioned within the actuator cylinder (18) and physically spaced from each other in the direction of piston motion by an odd multiple of quarter-wavelengths at a nominal generator output frequency. A phase detector (44) receives the reflected signal outputs from the directions couplers (40, 42), and provides an output through an integrator (46) to the frequency control input (33) of the genrator (34) to automatically compensate frequency of the rf energy radiated into the cylinder (18) and thereby maintain electrical quarter-wavelength spacing between the antennas (36, 38) against variations in dielectric properties of the hydraulic fluid to changes in fluid temperature, etc. A second phase detector is coupled to the generator (34) and one antenna (36) to generate a piston position signal for the control electronics (26).
摘要翻译：一种电动液压伺服系统，其包括具有气缸（18）和活塞（22）的致动器，响应于活塞位置产生阀控制信号的伺服阀（12）和控制电子器件（26）。可变频率射频发生器（34）通过相关联的定向耦合器（40,42）耦合到位于致动器气缸（18）内并且在活塞的方向上彼此物理间隔开的一对天线（36,38）以标称发生器输出频率运动四分之一波长的奇数倍。相位检测器（44）接收来自方向耦合器（40,42）的反射信号输出，并通过积分器（46）向发生器（34）的频率控制输入端（33）提供输出，以自动补偿辐射到气缸（18）中的射频能量，从而保持天线（36,38）之间的电气四分之一波长间隔，以防止液压流体的介电性质随着流体温度等的变化而变化。第二相位检测器耦合到发电机（34）和一个天线（36），以产生用于控制电子设备（26）的活塞位置信号。

2. 发明授权

EP0266606B1 Position determining apparatus 失效
标题翻译：位置确定装置
公开(公告)号：EP0266606B1
公开(公告)日：1991-04-17
申请号：EP87115199.9
申请日：1987-10-17
申请人： Vickers Incorporated
发明人： Taplin, Lael Brent
IPC分类号： G01D5/48 , F15B15/28 , G01D5/243
CPC分类号： F15B15/28 , G01D5/243

3. 发明公开

EP0226125A3 Variable displacement pump system 失效
标题翻译：可变位移泵系统可变位移泵系统
公开(公告)号：EP0226125A3
公开(公告)日：1989-07-05
申请号：EP86116785.6
申请日：1986-12-03
申请人： Vickers Incorporated
发明人： Taplin, Lael Brent
IPC分类号： F04B49/08 , F04B1/26
CPC分类号： F04B1/324
摘要： A variable displacement pump system including a pressure and a load sensing compensator (18,19) for operating a pump adjusting mechanism (11-13) to vary the displacement by applying hydraulic fluid to a hydraulic positioning piston (13) and a spring biased piston (12). The load sensing compensator (19) senses the pressure drop of the working fluid flow across a system valve (15) and applies a modulated pressure to the hydraulic positioning piston (13). The spring biased piston (12) is connected (line 21) to a load sensing line (20).

4. 发明公开

EP0186092A1 Power transmission 失效
标题翻译： Krafttransmission。
公开(公告)号：EP0186092A1
公开(公告)日：1986-07-02
申请号：EP85116042.4
申请日：1985-12-16
申请人： Vickers Incorporated
发明人： Gunda, Rajamouli , Taplin, Lael Brent
IPC分类号： G05D3/14
CPC分类号： G05D3/14 , G05D3/1445
摘要： An electrohydraulic servo control system responsive to a load acceleration or velocity command input signal wherein the input command signal is integrated and compared with position feedback from the valve actuator and load to obtain an error signal which controls the actuator. The velocity command input may be multiplied by an exponential factor to compensate for system following error. Another modification contemplates resetting of command signals to compensate for following error and to eliminate dead time upon change of direction of the load by the operator.
摘要翻译：电动液压伺服控制系统，其响应于负载加速度或速度指令输入信号，其中输入指令信号被积分并与来自阀门致动器和负载的位置反馈进行比较，以获得控制致动器的误差信号。速度命令输入可以乘以指数因子来补偿系统跟随误差。另一种修改考虑了复位命令信号以补偿跟随误差，并且在操作者改变负载方向时消除死区时间。

5. 发明公开

EP0093348A2 Electro-hydraulic servo valve system 失效
标题翻译：电动液压伺服阀系统。
公开(公告)号：EP0093348A2
公开(公告)日：1983-11-09
申请号：EP83103954.0
申请日：1983-04-22
申请人： Vickers Incorporated
发明人： Taplin, Lael Brent
IPC分类号： F15B9/03 , F15B13/043 , F15B13/16
CPC分类号： F15B9/03 , F15B13/0438 , Y10T137/86598 , Y10T137/86614
摘要： An electro-hydraulic servo valve system comprising a two-stage spool type servo valve including a first stage (20) comprising an electrical force motor (12) and a second stage (21) including a spool (28) for controlling flow to an actuator (14). The force motor (12) is operable upon receipt of a command electrical signal to cause to move the spool (28). A first feed-back (16) is operable to cause the force motor (12) to stop the movement of the spool (28). A second feedback (19) is also operable to stop the movement of the spool (28) at a predetermined position. The second feedback (19) has a greater gain than said first feedback (16) so that it normally dominates in the system. The second feedback (19) comprises a pair of identical electrical sensors (35, 36) connected in parallel, and operable by movement of the spool (28). A comparator circuit (18) compares the electrical signals from the sensors (35, 36) and is operable when the signals deviate from one another by a predetermined amount to disable the second feedback (19) so that the first feedback (16) will function permitting the electro-hydraulic servo valve system to operate without the second feedback (19).

6. 发明授权

EP0186092B1 Power transmission 失效
标题翻译：电力传输
公开(公告)号：EP0186092B1
公开(公告)日：1990-01-31
申请号：EP85116042.4
申请日：1985-12-16
申请人： Vickers Incorporated
发明人： Gunda, Rajamouli , Taplin, Lael Brent
IPC分类号： G05D3/14
CPC分类号： G05D3/14 , G05D3/1445

7. 发明公开

EP0266606A3 Position determining apparatus 失效
标题翻译：位置确定装置
公开(公告)号：EP0266606A3
公开(公告)日：1989-06-28
申请号：EP87115199.9
申请日：1987-10-17
申请人： Vickers Incorporated
发明人： Taplin, Lael Brent
IPC分类号： G01D5/48 , F15B15/28 , G01D5/243
CPC分类号： F15B15/28 , G01D5/243
摘要： Apparatus for determining the position of a movable member (22) in an electrohydraulic servo system (10) which includes a linear actuator (20) having a cylinder (18) and a piston (22) variably positioned therewithin, a servo valve (12) responsive to valve control signals for coupling the actuator (20) to a source (14, 16) of hydraulic fluid, and control electronics (26) responsive to piston position for generating the valve control signals. A coaxial transmission line (40) is formed within the linear actuator (20) to include a center conductor (38) coaxial with the actuator (20) and an outer conductor (34). A bead (42) of ferrite or other suitable magnetically permeable material is coupled (44) to the piston (22) and surrounds the center conductor (38) of the transmission line (40) for altering impedance characteristics of the transmission line (40) as a function of position of the piston (22) within the clinder (18). Position sensing electronics (46, 50) include an oscillator (46) coupled to the transmission line (40) for launching electromagnetic radiation, and a phase detector (50) responsive to radiation reflected from the transmission line (40) for determining position of the piston (22) within the cylinder (18).

8. 发明公开

EP0266606A2 Position determining apparatus 失效
标题翻译： Weggeber。
公开(公告)号：EP0266606A2
公开(公告)日：1988-05-11
申请号：EP87115199.9
申请日：1987-10-17
申请人： Vickers Incorporated
发明人： Taplin, Lael Brent
IPC分类号： G01D5/48 , F15B15/28 , G01D5/243
CPC分类号： F15B15/28 , G01D5/243
摘要： Apparatus for determining the position of a movable member (22) in an electrohydraulic servo system (10) which includes a linear actuator (20) having a cylinder (18) and a piston (22) variably positioned therewithin, a servo valve (12) responsive to valve control signals for coupling the actuator (20) to a source (14, 16) of hydraulic fluid, and control electronics (26) responsive to piston position for generating the valve control signals. A coaxial transmission line (40) is formed within the linear actuator (20) to include a center conductor (38) coaxial with the actuator (20) and an outer conductor (34). A bead (42) of ferrite or other suitable magnetically permeable material is coupled (44) to the piston (22) and surrounds the center conductor (38) of the transmission line (40) for altering impedance characteristics of the transmission line (40) as a function of position of the piston (22) within the clinder (18). Position sensing electronics (46, 50) include an oscillator (46) coupled to the transmission line (40) for launching electromagnetic radiation, and a phase detector (50) responsive to radiation reflected from the transmission line (40) for determining position of the piston (22) within the cylinder (18).
摘要翻译：一种用于确定电动液压伺服系统（10）中的可移动构件（22）的位置的装置，其包括具有可变地定位在其中的气缸（18）和活塞（22）的线性致动器（20），伺服阀（12）响应于用于将致动器（20）联接到液压流体的源（14,16）的阀控制信号，以及响应于活塞位置产生阀控制信号的控制电子器件（26）。在线性致动器（20）内形成同轴传输线（40），以包括与致动器（20）同轴的中心导体（38）和外导体（34）。铁氧体或其它适合的导磁材料的珠（42）与活塞（22）连接（44）并围绕传输线（40）的中心导体（38），以改变传输线（40）的阻抗特性，作为活塞（22）在砂带机（18）内的位置的函数。位置检测电子装置（46,50）包括耦合到用于发射电磁辐射的传输线（40）的振荡器（46），以及响应于从传输线（40）反射的辐射的相位检测器（50），用于确定气缸（18）内的活塞（22）。

9. 发明授权

EP0280980B1 Electrohydraulic Servo system 失效
标题翻译：电动伺服系统
公开(公告)号：EP0280980B1
公开(公告)日：1991-04-10
申请号：EP88102539.9
申请日：1988-02-22
申请人： Vickers Incorporated
发明人： Taplin, Lael Brent
IPC分类号： G01D5/48 , F15B15/28
CPC分类号： F15B15/2869 , F15B15/28

10. 发明授权

EP0226125B1 Variable displacement pump system 失效
标题翻译：可变位移泵系统
公开(公告)号：EP0226125B1
公开(公告)日：1991-04-03
申请号：EP86116785.6
申请日：1986-12-03
申请人： Vickers Incorporated
发明人： Taplin, Lael Brent
IPC分类号： F04B49/08 , F04B1/26
CPC分类号： F04B1/324

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式