公开(公告)号：US07066189B2

公开(公告)日：2006-06-27

申请号：US10739800

申请日：2003-12-18

Applicant: Stephen J. Tranovich ,  Phillip S. Gross

Inventor： Stephen J. Tranovich ,  Phillip S. Gross

IPC: F15B13/044

CPC classification number: F16K37/0041 ,  F15B13/0402 ,  F15B13/0444 ,  F15B19/005 ,  F16K31/046 ,  Y10T137/0318 ,  Y10T137/8242 ,  Y10T137/86622

Abstract: Provided is a servovalve system for regulating fluid flowing within a fluid circuit. The servovalve system comprises a housing, a spool slidably disposed within the housing, a stepper motor operatively connected to the spool, and a controller and a position sensor electronically connected to the stepper motor. The controller generates driver signals representative of a desired amount of stepper motor rotation in order to cause the stepper motor to effectuate spool motion relative to the housing. The position sensor senses an actual amount of stepper motor rotation and generates a quantity of position signals representative thereof. The controller determines a signal ratio of the quantity of the position signals to the quantity of the driver signals and generates a diagnostic signal when the signal ratio reaches a threshold value representative of a predetermined level of mechanical resistance of spool motion relative to the housing.

Abstract translation: 提供了一种用于调节在流体回路内流动的流体的伺服阀系统。 伺服阀系统包括壳体，可滑动地设置在壳体内的阀芯，可操作地连接到阀芯的步进电机，以及电连接到步进电机的控制器和位置传感器。 控制器产生表示步进马达旋转所需量的驱动信号，以使步进马达实现相对于壳体的线轴运动。 位置传感器感测步进电机旋转的实际量，并产生代表其的位置信号量。 控制器确定位置信号量与驾驶员信号量的信号比，并且当信号比达到代表相对于壳体的线轴运动的预定水平的机械阻力的阈值时，产生诊断信号。

公开(公告)号：US06923212B2

公开(公告)日：2005-08-02

申请号：US10741026

申请日：2003-12-19

Applicant: Stephen J. Tranovich ,  Iuliana G. Truia

Inventor： Stephen J. Tranovich ,  Iuliana G. Truia

IPC: F15B13/04 ,  F15B13/044 ,  F15B20/00 ,  F16K27/04 ,  F16K31/04

CPC classification number: F15B13/0402 ,  F15B13/0444 ,  F15B20/004 ,  F16K27/041 ,  F16K31/047 ,  Y10T137/86485 ,  Y10T137/86622

Abstract: Provided is a servovalve system having a fail safe apparatus adapted for switching the servovalve system between an operating position and a fail safe position. The servovalve system comprises a housing having a housing bore and a housing chamber, a spool moveably disposed within the housing, and a stepper motor connected to the spool and configured to vary the spool position for manipulating the fluid flowing within a fluid circuit when the servovalve system is placed in the operating position. A rotary-linear converter converts rotational motion of the stepper motor into axial motion of the spool. The fail safe apparatus includes a piston slidably sealed within the housing chamber and mechanically coupled to the rotary-linear converter. The piston is operative to move the spool from the operating position to the fail safe position upon a loss of fluid pressure in the housing chamber.

Abstract translation: 提供了一种具有故障安全装置的伺服阀系统，其适于在操作位置和故障安全位置之间切换伺服阀系统。 所述伺服阀系统包括壳体，所述壳体具有壳体孔和壳体腔室，可移动地设置在所述壳体内的阀芯，以及连接到所述阀芯并被配置为改变所述阀芯位置的步进马达，以在所述伺服阀中控制在流体回路内流动的流体 系统被放置在操作位置。 旋转线性转换器将步进电机的旋转运动转换成卷轴的轴向运动。 故障安全装置包括可滑动地密封在壳体室内并机械地联接到旋转线性转换器的活塞。 当外壳腔中的流体压力损失时，活塞可操作以将阀芯从操作位置移动到故障安全位置。

公开(公告)号：US5500580A

公开(公告)日：1996-03-19

申请号：US308713

申请日：1994-09-19

Applicant: Stephen J. Tranovich

Inventor： Stephen J. Tranovich

IPC: F15B9/03 ,  F15B21/08 ,  G05B19/35 ,  F15B9/09

CPC classification number: F15B9/03 ,  F15B21/087 ,  G05B19/356 ,  G05B2219/37133 ,  G05B2219/37333 ,  G05B2219/37401 ,  G05B2219/41273 ,  G05B2219/41301 ,  G05B2219/41311 ,  G05B2219/42092 ,  G05B2219/45176

Abstract: An integrated compliance electrohydraulic servovalve system connected to a load such as a simulated living being to provide more realistic movement thereto. The system includes a pressure transducer for sensing the pressure appearing at the output of the electrohydraulic servovalve and which is applied to an actuator connected to the load. The pressure as sensed is developed into a corresponding electrical signal which is used as a feed back signal to the drive motor of the electrohydraulic servovalve. The actuator position signal is also provided and is summed with the position command input signal to provide the command signal which is also summed with the pressure signal prior to application to the drive motor. The utilization of the pressure feed back signal provides compliance to the over all system resulting in a realistic movement of the simulated living being.

公开(公告)号：US5868165A

公开(公告)日：1999-02-09

申请号：US780753

申请日：1997-01-08

Applicant: Stephen J. Tranovich

Inventor： Stephen J. Tranovich

IPC: F15B13/04 ,  F15B13/044 ,  F16K11/085

CPC classification number: F15B13/0406 ,  F15B13/044 ,  F16K11/0856 ,  Y10T137/86654 ,  Y10T137/86662

Abstract: A rotary servovalve having a cylindrical spool (18), which rotates through a limited angle, positioned within a housing (16). The spool and housing have transverse holes through both parts with matching position and diameter. The holes in the housing form cylinder ports (21) and (24) for connection to a load. A metering pin (22) is fixed in the opening in the spool and its end surfaces conform to the surface of the spool. These end surfaces block the opposed load ports (21) and (24) when the valve is in the null position. Fluid under pressure and exhaust are applied through the inlet port (20) and return (11) ports to circumferential grooves (23) and (25) on opposite sides of the metering pin, which are narrower than the diameter of the pin. When the spool is rotated, pressure is connected to one of the load ports and return to the opposite port and the resulting flow is proportional to the angle of rotation. The valve is manufactured by positioning the spool, with the groove pre-formed, at the desired point in the housing and clamping them together. A hole is then bored simultaneously through both parts. The metering pin is then sized, inserted into the spool, fixed in place, and its ends are ground to conform to the clindrical surfaces of the spool and the housing.

Abstract translation: 旋转伺服阀具有定位在壳体（16）内的有限角度旋转的圆柱形卷轴（18）。 阀芯和外壳具有穿过两部分的匹配位置和直径的横向孔。 壳体中的孔形成用于连接到负载的气缸端口（21）和（24）。 计量销（22）固定在阀芯中的开口中，其端面符合阀芯表面。 当阀处于零位置时，这些端面阻挡相对的装载端口（21）和（24）。 在压力和排气下的流体通过入口（20）施加并且将（11）端口返回到计量销的相对于针的直径窄的周向槽（23）和（25）。 当阀芯旋转时，压力连接到其中一个负载端口并返回到相对端口，并且所产生的流量与旋转角成正比。 通过将预先形成的凹槽的线轴定位在壳体中的所需点并将它们夹在一起来制造阀。 然后通过两个部分同时钻孔。 然后将计量销的尺寸设置成插入到卷轴中，固定在适当的位置，并且其端部被研磨以符合卷轴和壳体的固定表面。

公开(公告)号：US5568022A

公开(公告)日：1996-10-22

申请号：US543567

申请日：1995-10-16

Applicant: Stephen J. Tranovich

Inventor： Stephen J. Tranovich

IPC: F15B9/03 ,  F15B21/08 ,  G05B19/35 ,  F15B9/09

CPC classification number: F15B9/03 ,  F15B21/087 ,  G05B19/356 ,  G05B2219/37133 ,  G05B2219/37333 ,  G05B2219/37401 ,  G05B2219/41273 ,  G05B2219/41301 ,  G05B2219/41311 ,  G05B2219/42092 ,  G05B2219/45176

Abstract: An integrated compliance electrohydraulic servovalve system connected to a load such as a simulated living being to provide more realistic movement thereto. The system includes a pressure transducer for sensing the pressure appearing at the output of the electrohydraulic servovalve and which is applied to an actuator connected to the load. The pressure as sensed is developed into a corresponding electrical signal which is used as a feed back signal to the drive motor of the electrohydraulic servovalve. The actuator position signal is also provided and is summed with the position command input signal to provide the command signal which is also summed with the pressure signal prior to application to the drive motor. The utilization of the pressure feed back signal provides compliance to the over all system resulting in a realistic movement of the simulated living being.

Abstract translation: 连接到诸如模拟生物的负载的集成顺应性电动液压伺服阀系统，以向其提供更实际的运动。 该系统包括用于感测出现在电动液压伺服阀的输出处的压力并且被施加到连接到负载的致动器的压力传感器。 感测到的压力被发展成对应的电信号，该信号被用作对电动液压伺服阀的驱动电机的反馈信号。 还提供致动器位置信号并将其与位置指令输入信号相加，以提供在施加到驱动马达之前也与压力信号相加的命令信号。 压力反馈信号的利用提供了对所有系统的依从性，导致模拟生物的真实运动。

公开(公告)号：US5156189A

公开(公告)日：1992-10-20

申请号：US406949

申请日：1989-09-13

Applicant: Stephen J. Tranovich

Inventor： Stephen J. Tranovich

IPC: F15B13/043

CPC classification number: F15B13/043 ,  F15B13/0436 ,  Y10T137/86606 ,  Y10T137/86702

Abstract: A control valve including a second stage spool for controlling flow of fluid from a source thereof to a load. The valve includes one additional pressure slot and one additional return slot on each side thereof and separated by a land on the spool from the usual pressure and return slots respectively. Each of the spool lands separating the pressure and return slots defines and opening therethrough to interconnect the slots so that upon movement of the spool to connect the source to the load, a greater flow of fluid is provided and would be possible with the same size spool without the additional pressure and return slots.

Abstract translation: 一种控制阀，包括用于控制流体从其源到负载的流动的第二级阀芯。 该阀包括一个额外的压力槽和在其每一侧上的一个额外的返回槽，并且分别与卷筒上的平台和通常的压力和回流槽分开。 分离压力和回流槽的每个卷轴接头限定和打开穿过其中以互连槽，使得当卷轴移动以将源连接到负载时，提供更大的流体流并且可以使用相同尺寸的卷轴 没有额外的压力和回流槽。

公开(公告)号：US06808162B2

公开(公告)日：2004-10-26

申请号：US10242079

申请日：2002-09-12

Applicant: Stephen J. Tranovich ,  Luliana G. Truia

Inventor： Stephen J. Tranovich ,  Luliana G. Truia

IPC: F16K510

CPC classification number: F16K5/12 ,  F16K5/0407

Abstract: A rotary two-way servovalve provides a continuously variable orifice size in response to an input rotation while minimizing actuation torque. The valve is comprised of a cylindrical spool which is fitted to and rotates within a bore in a body. Fluid is fed into an axial hole in the spool through an inlet groove and cross holes and is metered out through one of a pair of diametrically opposed metering slots depending upon the angle of rotation. The second slot is provided to balance the pressure forces on the spool. Other features are a pivot which provides the axial location of the spool in the body while also sealing the spool, and a drain hole to prevent pressure from moving the spool axially. The valve is intended to be driven by an electrical rotary actuator such as a step motor, servo motor, or a limited angle torque motor.

Abstract translation: 旋转双向伺服阀提供响应于输入旋转而连续变化的孔口尺寸，同时最小化致动扭矩。 该阀由圆柱形卷轴组成，该圆柱形卷轴装配在主体内的孔中并在其内旋转。 流体通过入口槽和交叉孔进入阀芯中的轴向孔，并且根据旋转角度通过一对直径相对的计量槽中的一个计量出。 提供第二槽以平衡阀芯上的压力。 其他特征是枢轴，其提供阀芯在主体中的轴向位置，同时也密封阀芯，以及排出孔，以防止压力轴向移动阀芯。 阀门由电动旋转执行器（如步进电机，伺服电机或有限角度转矩电机）驱动。

公开(公告)号：US6034499A

公开(公告)日：2000-03-07

申请号：US52405

申请日：1998-03-31

Applicant: Stephen J. Tranovich

Inventor： Stephen J. Tranovich

IPC: G05F1/10

CPC classification number: H02P6/14

Abstract: A control system is provided for a limited angle torque motor used as a rotary position control device. A motor for which the system is intended would consist of a rotor and a stator. The system uses an analog Hall-effect sensor to sense the position of the rotor. Rather than attempting to shield the Hall-effect sensor from the influences of magnetic fields generated by the field windings in the stator during motor operation, the system allows the output signal from the Hall effect sensor to contain elements of both the angular position and the extraneous magnetic field generated by the field windings of the motor. Current feedback from a circuit which independently senses the motor current is then combined with this signal to eliminate the influence of the motor coil magnetic field. The system is applicable to a number of limited angle torque motor designs. A preferred embodiment is shown wherein a unique sandwich construction of the rotor magnets on a soft iron rotor core provides a highly linear angular position signal for the system to process. Furthermore, a means of fixturing the Hall-effect sensor within the motor end windings to facilitate the position sensing for the preferred embodiment is described. Finally, a detailed description of the electronic circuit used to implement the system in the preferred embodiment is provided, and a number of alternate analog and digital implementations of the circuit are discussed.

Abstract translation: 为作为旋转位置控制装置使用的限制角度转矩电动机提供控制系统。 系统所用的电动机将由转子和定子组成。 该系统使用模拟霍尔效应传感器来感测转子的位置。 而不是试图屏蔽霍尔效应传感器在电动机运行期间由定子中的励磁绕组产生的磁场的影响，该系统允许来自霍尔效应传感器的输出信号包含角位置和外部元件 由电机的励磁绕组产生的磁场。 然后将独立感测电动机电流的电路的电流反馈与该信号组合以消除电动机线圈磁场的影响。 该系统适用于许多有限角度扭矩电机设计。 示出了优选实施例，其中在软铁转子芯上的转子磁体的独特夹层结构提供用于系统处理的高度线性的角位置信号。 此外，描述了在电动机端部绕组内固定霍尔效应传感器以便于优选实施例的位置感测的装置。 最后，提供了在优选实施例中用于实现系统的电子电路的详细描述，并且讨论了电路的多个替代的模拟和数字实现。

公开(公告)号：US4731919A

公开(公告)日：1988-03-22

申请号：US924236

申请日：1986-10-28

Applicant: Stephen J. Tranovich ,  James L. Coakley

Inventor： Stephen J. Tranovich ,  James L. Coakley

IPC: H02K41/035 ,  H02K15/00 ,  H02K15/14

CPC classification number: H02K41/0356 ,  Y10T29/49009

Abstract: A method of manufacturing a moving coil force motor particularly adapted for utilization with a hydraulic servovalve. The method includes aligning a flexure spring with respect to the permanent magnet structure and thereafter securing the permanent magnet structure and flexure spring within a case for the force motor. Subsequently, the coil structure is aligned with respect to the gap provided in the permanent magnet pole pieces by relatively moving the motorcase with respect to the coil until the appropriate position is attained and thereafter securing the case against further movements.

Abstract translation: 一种特别适用于液压伺服阀的动圈式力马达的制造方法。 该方法包括将挠性弹簧相对于永磁体结构对准，然后将永磁体结构和挠曲弹簧固定在力马达的壳体内。 随后，通过相对于线圈相对地移动电动机壳直到达到适当的位置，然后使壳体进一步移动，使线圈结构相对于设置在永磁体极片中的间隙对准。