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公开(公告)号：JPS51118300A
公开(公告)日：1976-10-18
申请号：JP1950076
申请日：1976-02-26
Applicant: SUNDSTRAND DATA CONTROL
Inventor： CHIYAARUZU DONARUDO BEETOMAN , HANSU RUDORUFU MIYURAA
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公开(公告)号：JPS51109700A
公开(公告)日：1976-09-28
申请号：JP1330576
申请日：1976-02-12
Applicant: SUNDSTRAND DATA CONTROL
Inventor： CHAARUZU DONARUDO BEETOMAN , HANSU RUDORUFU MYURAA
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公开(公告)号：WO1992001304A1
公开(公告)日：1992-01-23
申请号：PCT/US1991004769
申请日：1991-07-02
Applicant: SUNDSTRAND DATA CONTROL, INC.
Inventor： SUNDSTRAND DATA CONTROL, INC. , WAHLS, Karl, H.
IPC: H01H37/52
CPC classification number: H01H37/54
Abstract: A thermal actuator (10) utilizes a bimetallic snap action member such as a disc (12) to actuate a member such as the armature (28) of a switch to effect opening and closing of the switch. A resilient biasing member (36), such as an elongated curved spring member or a compressible member, engages the bimetallic member (12) on a side opposite that of the actuated member to oppose the force exerted by the actuated member during the operation of the actuator.
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公开(公告)号：WO1991000641A1
公开(公告)日：1991-01-10
申请号：PCT/US1990002549
申请日：1990-05-04
Applicant: SUNDSTRAND DATA CONTROL, INC.
Inventor： SUNDSTRAND DATA CONTROL, INC. , HULSING, Rand, H., II
IPC: H02K33/12
Abstract: A compact torque motor providing bi-directional, limited angle reactionless torque to opposed structures. A motor (10, 150) includes an X-shaped core (12), and first and second pole pieces (14 and 16), which are disposed at opposite sides of the core. Two opposed legs on the X-shaped core (12) comprise a first core section (18), which is transverse to a similar second core section (20). A first electromagnetic coil (22) is formed on the first core section and a second electromagnetic coil (24) on the second core section. When the first and second electromagnetic coils are alternately energized, tabs (38, 40, 44, and 46) disposed approximate the ends of the first and second pole pieces are attracted to the resulting magnetic poles (26 and 28, 30 and 32), causing the pole pieces to counter-rotate back and forth about a central axis (48). Magnetic flux developed by the first and second electromagnetic coils is conveyed through the tabs and the first and second pole pieces between the opposite magnetic poles. Since the pole pieces are lightweight, rotational inertia of the motor is very low, and its efficiency relatively high.
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公开(公告)号：WO1990010306A1
公开(公告)日：1990-09-07
申请号：PCT/US1990000132
申请日：1990-01-08
Applicant: SUNDSTRAND DATA CONTROL, INC.
Inventor： SUNDSTRAND DATA CONTROL, INC. , WOODRUFF, James, R.
IPC: H01L21/306
CPC classification number: G01P15/0802 , F16C11/12 , Y10T428/24298 , Y10T428/24322 , Y10T428/24479
Abstract: Flexures, and a method for creating flexures, for use in micromechanical sensors such as accelerometers in which a first member (124) is pivotally connected to a second member (126). In one aspect, the invention provides first and second flexures (108, 118) connecting the first and second members, the flexures permitting rotation about a common hinge axis (128). The flexures have a crossed configuration that provides increased stability. Each flexure is made by etching grooves (100, 102, 110, 112) in the opposite wafer surfaces, the positions and depths of the grooves being selected so as to form a flexure therebetween.
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Patent Agency Ranking
公开(公告)号：WO1990010205A1
公开(公告)日：1990-09-07
申请号：PCT/US1990000128
申请日：1990-01-08
Applicant: SUNDSTRAND DATA CONTROL, INC.
Inventor： SUNDSTRAND DATA CONTROL, INC. , BLAKE, Graeme, A. , NORLING, Brian, L.
IPC: G01L01/10
CPC classification number: G01P15/097 , G01L1/10 , G01L1/183 , Y10S73/01
Abstract: A dual vibrating beam force transducer having an electrostatic drive system. The transducer comprises a body (12) having first and second generally parallel beams (20, 22), coupled together at their ends. First and second electrodes (14, 16) are positioned adjacent to but not in contact with the respective beams. A drive circuit (18) causes an oscillating voltage to be applied to the electrodes. The beams are thus subjected to electrostatic forces that cause the beams to oscillate in a vibration plane containing both beams. The mechanical resonance of the beams controls the oscillation frequency, such that the frequency is a function of a force exerted along the beams. An embodiment is also described in which the drive means is coupled directly to one of the beams.
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公开(公告)号：WO1990005988A1
公开(公告)日：1990-05-31
申请号：PCT/US1989004440
申请日：1989-10-10
Applicant: SUNDSTRAND DATA CONTROL, INC.
Inventor： SUNDSTRAND DATA CONTROL, INC. , WAHLS, Karl, H.
IPC: H01H37/52
CPC classification number: H01H37/54
Abstract: Thermal actuators having a low temperature differential generally have a weak snap action. To overcome the problem, a snap action thermal actuator (10) utilizes a pair of mechanically coupled bimetallic members (12, 14) having different temperature characteristics to provide a fast and positive snap action thermal actuator even when a low temperature differential is required. The actuator is particularly useful for controlling the operation of electrical contacts (20, 22) in a thermal switch.
Abstract translation: 具有低温度差的热致动器通常具有弱的卡扣动作。 为了克服这个问题，快速动作热致动器（10）利用具有不同温度特性的一对机械耦合的双金属构件（12,14），以便即使在需要低温差时也能提供快速且正向的快速动作热致动器。 致动器对于控制热开关中的电触头（20,22）的操作特别有用。
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公开(公告)号：WO1990001703A1
公开(公告)日：1990-02-22
申请号：PCT/US1989003188
申请日：1989-07-24
Applicant: SUNDSTRAND DATA CONTROL, INC.
Inventor： SUNDSTRAND DATA CONTROL, INC. , PETERS, Rex, B. , CORNELIUS, Craig, J.
IPC: G01P15/00
CPC classification number: G01P15/097 , G01L1/162
Abstract: A matched pair of vibrating beam force transducers (28, 30) for use in an instrument such as an accelerometer, to provide enhanced linearity and common mode tracking, while decreasing the possibility of lock in or cross-talk between the transducers. In a preferred embodiment, first and second transducers are provided, the transducers producing respective first and second output signals having respective first and second frequencies. The transducers are connected in an arrangement in which for a given acceleration, one frequency increases and the other frequency decreases. The first transducer comprises a pair of first beams (52, 54), and the second transducer comprises a pair of second beams (52, 54). The beam dimensions are selected such that the Euler buckling constants of the first and second beams are substantially equal to one another, and such that the first and second frequencies are different from one another when the acceleration is zero and preferably are different from one another throughout the operating range of the accelerometer. In preferred arrangements, the transducer beams have a constant thickness, and the transducers have common axial stiffnesses.
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公开(公告)号：WO1989001655A1
公开(公告)日：1989-02-23
申请号：PCT/US1988002652
申请日：1988-08-04
Applicant: SUNDSTRAND DATA CONTROL, INC.
Inventor： SUNDSTRAND DATA CONTROL, INC. , HULSING, Rand, H.
IPC: G05B13/00
CPC classification number: G01C19/5776
Abstract: A servo loop control for the dither drive of a Coriolis rate sensor is provided. The dither drive includes a pair of electromagnetic coils (70), which are alternately energized to dither a parallelogram frame (50), on which first and second accelerometers (20 and 22) are mounted with their sensitive axes antiparallel to each other. An LVDT position sensor (106) provides a feedback signal indicating the relative position of the two accelerometers or displacement of the parallelogram frame as it is dithered back and forth. The position signal is summed with a driving signal, amplified and summed with a velocity aiding signal and a velocity signal derived by differentiating the position signal. The resulting sum is amplified and again summed with an acceleration aiding input that includes compensation for a phase shift in the motion of the parallelogram frame relative to the driving force applied by the electromagnet coils, and for (I2 and 1/D2) nonlinearities where I is the current and D is the pole gap dimension (114). The sum of these signals is used to energize the electromagnetic coils, driving the parellelogram frame with a signal that causes it to dither in a pure sinusoidal fashion. Each of the critical frequencies used in the servo loop is phase locked to a common stable crystal reference frequency, and all components of the servo loop are powered by a common power supply. The servo loop provides improved frequency and phase stability and insensitivity to voltage fluctuations.
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公开(公告)号：WO1988009537A1
公开(公告)日：1988-12-01
申请号：PCT/US1988001224
申请日：1988-04-18
Applicant: SUNDSTRAND DATA CONTROL, INC.
Inventor： SUNDSTRAND DATA CONTROL, INC. , GLOVER, J., Howard
IPC: G06F15/31
CPC classification number: H03H17/0263
Abstract: A fast median filter (22) is disclosed for filtering high frequency noise from signals, such as, signals (10, 14) from a radio altimeter. The filter (22) continuously provides the median of a predetermined number of points of the signal, which are received in an array, by successively comparing (60) each data point in the array with each other data point in the array. A counter is either incremented (62) or decremented (64) depending on the result of each comparison. If the counter reaches a predetermined value at the end of the sequence of comparisons, the median is determined. A pointer (30) keeps track of the oldest data point in the array (42). After the median is determined, a new data point is received into the array and written over the oldest data point (34). The median of the array is determined each time the array is updated with a new data point (32). When the pointer reaches the last position in the array, the pointer is reset to the first position and is subsequently incremented in the same manner (40).
Abstract translation: 公开了一种用于从诸如来自无线电高度计的信号（10,14）的信号过滤高频噪声的快速中值滤波器（22）。 滤波器（22）通过将阵列中的每个数据点与阵列中的每个其他数据点相连（60）连续地提供在数组中接收的信号的预定数量的点的中值。 根据每个比较的结果，计数器增加（62）或递减（64）。 如果计数器在比较序列结束时达到预定值，则确定中位数。 指针（30）跟踪阵列中最早的数据点（42）。 在确定中值后，将新的数据点接收到阵列中并写入最旧的数据点（34）。 每次使用新的数据点（32）更新数组时，确定阵列的中值。 当指针到达阵列中的最后一个位置时，指针将被重置为第一个位置，并以相同的方式递增（40）。
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