公开(公告)号：WO1985005652A1

公开(公告)日：1985-12-19

申请号：PCT/US1985001030

申请日：1985-05-31

Applicant: SUNDSTRAND DATA CONTROL, INC.

Inventor： SUNDSTRAND DATA CONTROL, INC. ,  MOLNAR, Daniel, O.

IPC: E21B47/024

CPC classification number: E21B47/022

Abstract: In order to improve the accuracy of borehole survey systems utilizing probes (18) with inertial components including inclinometers (32, 34, 36), two ring laser gyro units (42, 44) are included to provide rotation information to the system. When the probe (18) is moving in a borehole (12), inclinometer information is used to produce a synthetic rotation signal to take the place of a third gyro and the earth's rotation is used for a similar purpose in combination with signals from the two ring laser gyros (42, 44) when the probe (18) is stopped. Wire line velocity is used in combination with the inclinometer and gyro information to provide signals representing the probe velocity and position. Coordinate transformations are provided in the probe to transform the inertial signals and wire line velocity signals into earth reference coordinate system. Kalman filtering incorporates noninertial velocity data to reduce the effect of errors inherent in the generation of various input signals to the system.

公开(公告)号：WO1992008139A1

公开(公告)日：1992-05-14

申请号：PCT/US1991007857

申请日：1991-10-21

Applicant: SUNDSTRAND DATA CONTROL, INC.

Inventor： SUNDSTRAND DATA CONTROL, INC. ,  BECKA, Stephen, F. ,  NORLING, Brian, L.

IPC: G01P15/08

CPC classification number: G01P15/08

Abstract: A constraining system for an accelerometer of the type that comprises flexures (66, 68) or the like for mounting a proof mass (64, 124, 150) to a support (62, 122, 164) for translational motion along a sensing axis (SA) and rotational motion about a hinge axis (HA) perpendicular to the sensing axis. The system provides constraining rods (90, 92, 130, 132, 160, 162, 170) for constraining rotational motion of the proof mass about a pendulous axis (PA), the pendulous axis being normal to the sensing and hinge axes. The constraining rods may also limit proof mass translation along the hinge axis.

Abstract translation: 一种用于加速度计的约束系统，其包括弯曲（66,68）等，用于将检测质量块（64,124,150）安装到支撑件（62,122,164）上，用于沿感测轴线的平移运动 SA）和垂直于感测轴线的铰链轴（HA）的旋转运动。 该系统提供约束棒（90,92,130,132,160,162,170），用于约束围绕下垂轴线（PA）的防弹块的旋转运动，下垂轴垂直于感测和铰链轴线。 约束杆还可以限制沿着铰链轴的证明质量平移。

公开(公告)号：WO1992008114A1

公开(公告)日：1992-05-14

申请号：PCT/US1991007880

申请日：1991-10-22

Applicant: SUNDSTRAND DATA CONTROL, INC.

Inventor： SUNDSTRAND DATA CONTROL, INC. ,  NORLING, Brian, L. ,  PETERS, Rex, B.

IPC: G01K11/26

CPC classification number: G01K7/32

Abstract: A vibrating crystal transducer (10) for measuring temperature is disclosed. The crystal includes a single elongated vibrating beam (14) that has a torsional mode resonant frequency that is a function of the temperature of the crystal. The torsional moments of the crystal are reverse symmetric with respect to a nodal line on the beam (14). The beam (14) is contained in a frame (16) that is secured to a sensor frame member (12). The beam (14) is attached to the frame (16) by a pair of opposed mounting posts (18) that are in line with the nodal line on the beam (14). The beam (14), the beam frame (16) and the mounting posts (18) are formed out of an integral section of crystalline material. When the beam (14) is vibrated, the reverse symmetrically opposed torsional moments along the beam (14) cancel each other out and, consequently, no torsional energy is transmitted through the mounting posts (18) to the beam frame (16) or the sensor frame (12). Since the beam frame (16) does not serve as a recipient for the torsional energy, torsional energy is not lost through the beam frame (16) so that the beam (14) has a relatively high quality factor and torsional vibration of the beam cannot cause the crystal to eventually work loose of the sensor frame (12) at the beam frame (16).

公开(公告)号：WO1992005548A1

公开(公告)日：1992-04-02

申请号：PCT/US1991006624

申请日：1991-09-13

Applicant: SUNDSTRAND DATA CONTROL, INC.

Inventor： SUNDSTRAND DATA CONTROL, INC. ,  MATTER, Dennis, L.

IPC: G11B13/04

CPC classification number: G11B11/1056

Abstract: A hermetically sealed bias magnet assembly (30) for use in a magneto-optic drive system for recording data onto a magneto-optic disc (16) utilizes a permanent magnet (34) that is rotatably mounted in a hermetically sealed chamber (52) of a housing that has a second chamber (58) containing a drive coil (32) that rotates the magnet to thereby change the polarity of the magnet field applied to the disc. Hermetic sealing of the magnet permits a small magnet and small bearings to be used to provide the low rotational mass required for rapid operation and avoids the performance degradation that often occurs when small components are exposed to a hostile environment.

Abstract translation: 用于在磁光盘（16）上记录数据的磁光驱动系统中使用的密封偏置磁体组件（30）利用永磁体（34），该永磁体可转动地安装在密封腔 具有第二室（58）的壳体，所述第二室包含驱动线圈（32），所述驱动线圈使所述磁体旋转，从而改变施加到所述盘的磁场的极性。 磁体的气密密封允许使用小的磁体和小的轴承来提供快速操作所需的低旋转质量，并避免当小部件暴露于恶劣环境时经常发生的性能下降。

公开(公告)号：WO1991020145A1

公开(公告)日：1991-12-26

申请号：PCT/US1991004300

申请日：1991-06-12

Applicant: SUNDSTRAND DATA CONTROL, INC.

Inventor： SUNDSTRAND DATA CONTROL, INC. ,  WALTON, J., Rodney, Jr. ,  HOLT, Anthony, P.

IPC: H04L13/18

CPC classification number: H04L7/0062 ,  H04L27/227

Abstract: In the signal acquisition system disclosed herein, frequency, phase and time uncertainties are resolved essentially simultaneously by including a preselected code group in the transmitted signal and by applying the received signal to a differential detector (25) and then to a passive differential matched filter (31), the parameters of which are selected in correspondence with a code group, thereby to generate a corresponding series of complex match values. The absolute magnitude of the complex sum of the match values is maximized when the received signal is modulated by the preselected code group. When the presence of the code group in the received signal is detected, the phasing of the complex sum is detected thereby to determine carrier frequency offset. A directly detected version of the received signal is applied to a corresponding masking filter (55A, 59A, 61, 55B, 59B) and the phase of a resultant sum signal is detected to determine carrier phase offset.

公开(公告)号：WO1991019985A1

公开(公告)日：1991-12-26

申请号：PCT/US1991003129

申请日：1991-05-06

Applicant: SUNDSTRAND DATA CONTROL, INC.

Inventor： SUNDSTRAND DATA CONTROL, INC. ,  HOLDREN, Frederick, V. ,  NOVACK, Mitchell, J. ,  RUPNICK, Charles, J.

IPC: G01P01/02

CPC classification number: G01P1/023 ,  G01P15/132

Abstract: An improved preload system for an accelerometer (10, 110, 210) in which an acceleration sensitive structure (14, 114, 214) is clamped between first (12, 112, 212) and second (16, 116, 216) clamping members. The acceleration sensitive structure includes a paddle (42, 142, 242) supported such that the paddle has a degree of freedom along a sensing axis (SA). The accelerometer further includes a case (20, 120, 220) within which the acceleration sensitive structure and clamping members are mounted. The preload system comprises an internal mounting surface (36, 136, 236) in the case that faces in a first direction along the sensing axis, and that contacts the second clamping member and prevents it from moving in a second direction opposite to the first direction. The preload system also includes a spring (20, 80, 82, 128, 228) extending between the first clamping member and the case, such that the spring exerts a force on the first clamping member in the second direction. A positioning ring (26, 126, 226) may also be provided between the first clamping member and the spring, to laterally locate the first clamping member within the case.

公开(公告)号：WO1991015837A1

公开(公告)日：1991-10-17

申请号：PCT/US1991002065

申请日：1991-03-26

Applicant: SUNDSTRAND DATA CONTROL, INC.

Inventor： SUNDSTRAND DATA CONTROL, INC. ,  GLOVER, J., Howard

IPC: G08B23/00

CPC classification number: G05D1/0615

Abstract: A wind shear detection system (10) provides an alert to the pilot of an aircraft upon the occurrence of a sustained low-level increasing performance shear if the shear occurs for a sufficiently long period of time, even if the shear is of a relatively low magnitude. An integrator (22, 24, 26, 28, 30) is provided to integrate signals representative of low-level increasing performance shears and to provide the alert if the accumulated energy caused by the shear exceeds a predetermined level (12, 18, 20). The integrated low-level shear signal may be combined with currently occurring shear signals (16) and the alert generated if the combination of current increasing performance shear signals and the integrated shear signal exceeds a predetermined level.

公开(公告)号：WO1990013037A1

公开(公告)日：1990-11-01

申请号：PCT/US1990001338

申请日：1990-03-12

Applicant: SUNDSTRAND DATA CONTROL, INC.

Inventor： SUNDSTRAND DATA CONTROL, INC. ,  BLAKE, Graeme ,  NORLING, Brian ,  NOVACK, Mitchell, J.

IPC: G01P15/13

CPC classification number: G01P15/125 ,  G01P15/132 ,  G01P2015/0828

Abstract: An improved accelerometer of the type that includes a proof mass (34, 24, 164, 170) suspended from a support (32, 172) by one or more flexures (36, 174), such that the proof mass can pivot with respect to the support about a hinge axis (HA). The proof mass includes a paddle (34, 164) attached to the flexures, the paddle having first (166) and second (168) paddle surfaces. The coil (170) is mounted on the first paddle surface, and the accelerometer includes a stator (42, 162) for mounting the support and for forming a magnetic circuit with the coil. The improvement comprises positioning the flexures such that a plane containing the hinge axis and the center of mass (180) of the proof mass is parallel to one of the paddle surfaces, and is closer to one paddle surface than to the other paddle surface. In a preferred arrangement, the plane containing the hinge axis and the center of mass is approximately coplanar with one of the paddle surfaces and with the flexures.

公开(公告)号：WO1989006411A1

公开(公告)日：1989-07-13

申请号：PCT/US1988004639

申请日：1988-12-22

Applicant: SUNDSTRAND DATA CONTROL, INC.

Inventor： SUNDSTRAND DATA CONTROL, INC. ,  MULLER, Hans, R.

IPC: G08B23/00

CPC classification number: G05D1/0615

Abstract: A wind shear detection system (30) compares airspeed (40) with a composite signal derived from signals representative of longitudinal acceleration (32), normal acceleration (34), angle of attack (36) and flight path angle to generate a shear signal. An enhanced version of the system is also compensated for roll angle (70), radio altitude (64) and flap position. In a modified system, the accelerations are calculated along the velocity vector of the aircraft rather than along the horizontal axis to compensate for inaccuracies that could occur under extreme flight conditions such as high bank angle turns and dynamic manoeuvre.

公开(公告)号：WO1989003998A1

公开(公告)日：1989-05-05

申请号：PCT/US1988003486

申请日：1988-10-10

Applicant: SUNDSTRAND DATA CONTROL, INC.

Inventor： SUNDSTRAND DATA CONTROL, INC. ,  NORLING, Brian, L. ,  CORNELIUS, Craig, J.

IPC: G01P15/10

CPC classification number: G01P15/097

Abstract: An accelerometer comprising a support (52) and a proof mass (40) mounted to the support by a flexure (50) or the like, such that the proof mass can rotate about a hinge axis (HA) perpendicular to sensitive axis (SA). An isolator (42) is also mounted to the support by an isolator suspension system (60, 62) that is relatively compliant for isolator movement parallel to a transducer axis (TA) normal to the hinge axis, and relatively noncompliant for isolator rotation about the hinge axis. Force transducers (80, 82) are connected between the isolator and the proof mass. The force transducers are parallel to the transducer axis, and positioned on opposite sides of the hinge axis from one another, such that rotation of the proof mass about the hinge axis puts one force transducer in tension and the other force transducer in compression. The isolator suspension system reduces the magnitude of common mode inputs, such as those caused by differential thermal expansion of the crystals with respect to other accelerometer components.