公开(公告)号：WO1985002661A1

公开(公告)日：1985-06-20

申请号：PCT/US1984002013

申请日：1984-12-07

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  GRIMM, Duane, H.

IPC: F16D07/02

CPC classification number: F16D43/213

Abstract: A narrow tolerance range slip clutch (15) has a friction clutch (19, 20) and a ball ramp mechanism (30, 31, 34) with one or more springs (28) associated with the friction clutch and ball ramp mechanism to exert a clamp load on the friction clutch and to establish a trip torque setting on the ball ramp mechanism. With a driving torque below a trip torque setting, there is a normal drive through the slip clutch (15). When the driving torque exceeds the trip torque setting, the clamp load on the friction clutch is reduced by means of a force balance between a ball ramp axial force (FB) and a clutch reaction force (Ff) also proportional to input torque which are functions of the input torque and spring forces acting on the ball ramp mechanism and the friction clutch. With this force balance, the clamp load on the friction clutch is relieved sufficiently to avoid transmission of torque above the trip torque setting, with the result that there is continuous power flow through the slip clutch (15) and after relief of the overloading, the slip clutch automatically resets itself to a full clamp load in transmitting normal torque levels.

公开(公告)号：WO1985001992A1

公开(公告)日：1985-05-09

申请号：PCT/US1984001700

申请日：1984-10-22

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  SIDRANSKY, Fred, S.

IPC: F03B03/12

CPC classification number: F04D29/30 ,  F04D29/668 ,  F04D29/681

Abstract: An offset centrifugal compressor (Figs. 2-4) having a plurality of curved blades (30) associated with a rotor (20) and defining, respectively, inducer and exducer sections with a plurality of the blades being formed of at least three blade parts (35-37) extending generally end-to-end. The adjacent ends of adjacent pairs of blade parts are indexed and immersed relative to each other in both the inducer and exducer section to form a pair of gaps through which a jet (45) of gas may travel from the pressure side to the suction side of the blade to control boundary layer build-up and reduce separation of gas from the blade. An aerodynamically contoured bridge member (50, 51) is located in each gap to provide structural integrity and resonance frequency control, with these bridging members being positioned to avoid obstruction of gas flow in the area adjacent the tip of the blade.

公开(公告)号：WO1985001840A1

公开(公告)日：1985-04-25

申请号：PCT/US1984001627

申请日：1984-10-11

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  GLENNON, Timothy, F.

IPC: H02H07/122

CPC classification number: H02M7/5387

Abstract: An n-phase inverter for developing polyphase AC power from DC power developed by a DC source (10) over first and second DC bus lines (16a, 16b) and a neutral line (30) includes circuitry for preventing the return of regenerative currents developed by a load (12) connected to the output of the inverter to the DC source. The circuitry includes current sensors (32, 34) for sensing the presence of regenerative currents, and switches (Q7, Q8, Q9, Q10) which are operated when a regenerative current is sensed to disconnect the DC source from the inverter and to shunt the regenerative current back to the load. The inverter may therefore be used with DC sources which cannot accept regenerative currents. Furthermore, the size of a DC bus filter between the DC source and the inverter may be substantially reduced.

公开(公告)号：WO1985001401A1

公开(公告)日：1985-03-28

申请号：PCT/US1984001196

申请日：1984-07-30

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  GLENNON, Timothy, F.

IPC: H02M01/12

CPC classification number: H02M7/487

Abstract: A neutrally clamped pulse width modulated inverter. The inverter includes a bidirectional switch (40) which, when turned on, clamps the voltage applied to the inverter output filter (10) to neutral or ground to provide a pulse width modulated waveform having a voltage swing of one-half of the rail-to-rail voltage of the inverter over each half cycle of the output. The bidirectional switch (40) also provides a path to ground for any regenerative current flowing from the load (14) so as to enable the regenerative current capacity of the inverter power supply to be reduced.

公开(公告)号：WO1985000253A1

公开(公告)日：1985-01-17

申请号：PCT/US1984000672

申请日：1984-05-03

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  GLENNON, Timothy, F.

IPC: H02H07/20

CPC classification number: H03K17/122 ,  H03K17/08142

Abstract: A power switching circuit for controlling the power from a DC supply to a regenerative load (12). The switching circuit includes a plurality of parallel connected MOSFETs (10, 11). A first diode (18) is connected in parallel with the MOSFET switches and poled to conduct reverse current from the load. A second diode (20) is connected in series with the MOSFETs to block the flow of reverse current through the MOSFETs.

公开(公告)号：WO1998025123A2

公开(公告)日：1998-06-11

申请号：PCT/US1997022121

申请日：1997-12-05

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  BEAM, Palmer, H. ,  BELANGER, David, J. ,  EILERS, George, J. ,  IMLACH, Joseph

IPC: G01M13/00

CPC classification number: G01M13/04 ,  F16C17/246

Abstract: A bearing monitor for use with a canned motor pump having a wound stator and a rotor drivably coupled to an impeller, the rotor being mounted on radial journal bearings and axial thrust bearings within a containment can comprises a first and a second target embedded in an outer periphery of the rotor in axial proximity to a first and a second end of the rotor. The monitor includes a plurality of sensors mounted external to the containment can in axial proximity to each of the two targets and radially displaced approximately equally around the periphery of the containment can. A plurality of magnetic field generators create local magnetic fields coupled through the containment can, process fluid, rotor, and at least a portion of one target to one of the sensors. In response to each field, each sensor generates an output signal which varies as a result in a change in the magnetic circuit reluctance caused by bearing wear. A monitor circuit is coupled to the sensors and compares their output signals to generate a scaled output which is approximately linearly related to bearing wear. The output of sensors in the same axial plane are utilized to determine bearing wear in a radial direction, while the output of sensors in different axial planes are utilized to determine bearing wear in an axial direction. Electromagnetic shielding may be used depending on the environmental and operating conditions.

Abstract translation: 一种用于具有缠绕定子和可驱动地联接到叶轮上的转子的密封电机泵的轴承监视器，所述转子安装在径向轴颈轴承和位于容纳壳内的轴向推力轴承内可以包括嵌入外部的第一和第二目标 转子的周边轴向靠近转子的第一和第二端。 监视器包括安装在容纳壳体外部的多个传感器，其轴向接近两个目标中的每一个并且围绕容纳罐的周边大致均匀地径向移位。 多个磁场发生器产生通过容纳罐耦合的局部磁场，处理流体，转子以及一个目标的至少一部分传递到传感器之一。 响应于每个场，每个传感器产生一个输出信号，由于轴承磨损引起的磁路磁阻的变化而变化。 监视器电路耦合到传感器，并比较其输出信号以产生与轴承磨损大致线性相关的缩放输出。 在相同的轴向平面中的传感器的输出用于确定径向方向上的轴承磨损，而不同轴向平面中的传感器的输出用于确定轴向方向上的轴承磨损。 可以根据环境和操作条件使用电磁屏​​蔽。

公开(公告)号：WO1998024042A1

公开(公告)日：1998-06-04

申请号：PCT/US1997021628

申请日：1997-11-26

Applicant: SUNDSTRAND CORPORATION ,  EASTMAN, Donald, G. ,  ELGIN, Richard, L. ,  HAO, Beilene

Inventor： SUNDSTRAND CORPORATION

IPC: G06F17/60

CPC classification number: G06Q10/06 ,  G06Q10/20

Abstract: A method is provided for maintaining components subject to fatigue failure during in service use. The method uses statistical distributions (10) in a simulation of in service use (16) of a fleet of components to predict the failure rate (12) of the fleet over a fixed time increment (14, 26) for an assumed inspection program. These predictions are used to determine an operating plan (20), including an inspection program, that will maintain an acceptable failure rate by detecting components with fatigue indications and removing the components prior to failure (22). The inspection program provides actual fatigue data resulting from in service use (18). As the inspection data base grows, the simulation is revised (24, 48) to incorporate the data. The predicted failure rates and the operating plan (20) are then updated based on the revised simulation.

Abstract translation: 提供了一种用于在使用期间维持组件遭受疲劳失效的方法。 该方法使用统计分布（10）在组件的服务使用（16）的模拟中，以假定的检查程序来预测车队在固定时间增量（14,26）上的故障率（12）。 这些预测用于确定包括检查程序在内的运行计划（20），该程序将通过检测具有疲劳指示的部件并在故障之前去除部件来维持可接受的故障率（22）。 检查程序提供在使用中产生的实际疲劳数据（18）。 随着检查数据库的增长，模拟被修改（24,48）以合并数据。 然后根据修改的模拟更新预测的故障率和操作计划（20）。

公开(公告)号：WO1998001942A1

公开(公告)日：1998-01-15

申请号：PCT/US1997012285

申请日：1997-07-09

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  JONES, Stephen, R. ,  DRAGER, Barry, T.

IPC: H02P07/05

CPC classification number: H02P1/163 ,  H02P6/185 ,  H02P9/40 ,  H02P25/089 ,  H02P2101/30

Abstract: An apparatus for estimating rotor position of a rotating machine having an even number of phase windings selects first and second phase position estimates developed in response to pulses applied to phase windings having associated phase profiles that are displaced at other than 180 electrical degrees and determines a rotor position estimate from the first and second phase position estimates.

Abstract translation: 用于估计具有偶数个相位绕组的旋转机器的转子位置的装置选择响应于施加到具有相关联的相位轮廓的相位绕组的脉冲而产生的第一和第二相位位置估计，该相位相位轮廓在除180度以外的位置上移位，并确定转子 从第一和第二阶段位置估计的位置估计。

公开(公告)号：WO1997038485A1

公开(公告)日：1997-10-16

申请号：PCT/US1997005764

申请日：1997-04-07

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  JONES, Stephen, R. ,  DRAGER, Barry, T.

IPC: H02P07/05

CPC classification number: H02P9/40 ,  H02P25/089 ,  H02P2101/30

Abstract: A sensorless control for operating an inverter coupled to a switched reluctance machine includes an instantaneous position generation circuit that develops a signal for controlling commutation of the switched reluctance machine. The instantaneous position generation circuit includes a digitally controlled counter which provides a direct interface between a position estimation circuit and commutation logic for the inverter.

Abstract translation: 用于操作耦合到开关磁阻电机的逆变器的无传感器控制器包括瞬时位置产生电路，其产生用于控制开关磁阻电机换向的信号。 瞬时位置产生电路包括数字控制的计数器，其提供位置估计电路和逆变器的换向逻辑之间的直接接口。

公开(公告)号：WO1997027425A1

公开(公告)日：1997-07-31

申请号：PCT/US1997000599

申请日：1997-01-21

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  BUFORD, John, T. ,  MAKULEC, Jeffery, M.

IPC: F22B21/26

CPC classification number: F01K3/188 ,  F22B21/26

Abstract: A sleeved boiler-reactor provides enhanced nucleate boiling and reduced risk of film-boiling within boiling tubes of the boiler-reactor, in the same manner as prior boiler-reactors of seam-welded construction, without the high fabrication cost incident with seam-welding, through the use of a closely wound helical shaped boiling tube structure (30, 52) constrained by lugs (66, 68) against a sleeve portion (14, 16) of the casing of the boiler-reactor.

Abstract translation: 套筒式锅炉反应器以与现有的焊接结构的锅炉反应器相同的方式提供增强的核沸腾和降低锅炉反应器沸腾管内的薄膜沸腾的风险，而不需要焊接高的制造成本 通过使用由凸耳（66,68）约束的紧密卷绕的螺旋形沸腾管结构（30,52）抵靠锅炉 - 反应器的壳体的套筒部分（14,16）。