公开(公告)号：US5135312A

公开(公告)日：1992-08-04

申请号：US555903

申请日：1990-07-20

Applicant: Graeme A. Blake

Inventor： Graeme A. Blake

IPC: G01K7/32

CPC classification number: G01K7/32

Abstract: A vibrating crystal transducer for measuring temperature including a bonding area from which three or more tines extend. The tines have a torsional mode resonant frequency that is a function of temperature. Electrodes on the transducer excite the tines into vibration so that the torsional moments of the adjacent edges of the adjacent tines are reverse symmetric. When the tines are vibrated, the reverse symmetrical vibrational moments of the individual tines cancel so that there is no torsional moment, or twisting, within the area between the points where the tines intersect, which is the area defined by the bonding area. Since the bonding area does not serve as a sink for torsional energy, torsional energy is not lost through the bonding area so that the transducer has a relatively high quality factor and torsional vibration of the transducer cannot cause the transducer to eventually work loose of a mounting pad to which it is attached.

Abstract translation: 一种用于测量温度的振动晶体传感器，包括三个或多个尖齿延伸的接合区域。 尖齿具有作为温度的函数的扭转模式共振频率。 传感器上的电极激发尖齿振动，使相邻尖齿相邻边缘的扭转力矩反向对称。 当尖齿振动时，单个齿的反向对称振动力矩消除，使得在齿相交的点之间的区域内不存在扭转力矩或扭转，这是由接合区域限定的区域。 由于接合区域不用作扭转能量的下沉器，所以扭转能量不会通过接合区域损失，因此传感器具有较高的品质因数，并且传感器的扭转振动不能导致传感器最终松动安装 它附着的垫。

公开(公告)号：US5097172A

公开(公告)日：1992-03-17

申请号：US556007

申请日：1990-07-20

Applicant: Stephen F. Becka

Inventor： Stephen F. Becka

IPC: G01P1/00 ,  G01P1/02 ,  H01L41/08

CPC classification number: G01P1/023 ,  G01P1/006

Abstract: A mounting system for mounting a transducer to a case, such that the transducer position is fixed and stable, and such that stresses on the transducer due to thermal expansion are minimized. The mounting system comprises a band, lower arms extending in a first axial direction from the band, and upper arms extending in a second, opposite axial direction from the band. The transducer arms are connected to the lower, and the upper arms to the case. In response to differential thermal expansion, the arms S bend in a radial direction.

Abstract translation: 用于将换能器安装到壳体上的安装系统，使得换能器位置是固定和稳定的，并且使得由于热膨胀而对换能器的应力最小化。 安装系统包括带，沿着带的第一轴向方向延伸的下臂，以及在与带相反的第二轴向方向上延伸的上臂。 传感器臂连接到下部，上臂连接到外壳。 响应于差分热膨胀，臂S沿径向弯曲。

公开(公告)号：US5093846A

公开(公告)日：1992-03-03

申请号：US538920

申请日：1990-06-15

Applicant: J. Rodney Walton, Jr. ,  Anthony P. Holt

Inventor： J. Rodney Walton, Jr. ,  Anthony P. Holt

IPC: H04K1/00 ,  H04L7/02 ,  H04L27/227

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 and then to a passive differential matched filter, 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 and the phase of a resultant sum signal is detected to determine carrier phase offset.

Abstract translation: 在本文公开的信号采集系统中，频率，相位和时间不确定性基本上同时通过在发射信号中包括预选码组并且将接收到的信号施加到差分检测器，然后到无源差分匹配滤波器来解析， 其被选择为与代码组相对应，从而生成相应的一系列复匹配值。 当接收到的信号被预先选择的码组调制时，匹配值的复数和的绝对幅度最大。 当检测到接收信号中代码组的存在时，检测复数和的相位，从而确定载波频率偏移。 将接收到的信号的直接检测版本应用于对应的掩蔽滤波器，并且检测所得和信号的相位以确定载波相位偏移。

公开(公告)号：US5085079A

公开(公告)日：1992-02-04

申请号：US535760

申请日：1990-06-11

Applicant: Frederick V. Holdren ,  Mitchell J. Novack

Inventor： Frederick V. Holdren ,  Mitchell J. Novack

IPC: G01P15/13

CPC classification number: G01P15/132

Abstract: A mounting/coupling structure for use in an accelerometer to mount the electronics assembly with respect to the case, and to electrically couple the electronics assembly to the acceleration sensitive structure. The mounting/coupling structure may be positioned such that it provides gas damping for the paddle, and may also include means for holding the acceleration sensitive structure in a fixed position with respect to the case.

Abstract translation: 一种用于加速度计相对于壳体安装电子组件并将电子组件电耦合到加速度敏感结构的安装/联接结构。 安装/联接结构可以被定位成使得其为桨提供气体阻尼，并且还可以包括用于将加速度敏感结构保持在相对于壳体的固定位置的装置。

公开(公告)号：US5075685A

公开(公告)日：1991-12-24

申请号：US616426

申请日：1990-11-21

Applicant: Everette E. Vermilion ,  Noel S. Paterson

Inventor： Everette E. Vermilion ,  Noel S. Paterson

IPC: G01C21/00 ,  B64D45/04 ,  G01C5/00 ,  G01C21/20 ,  G01P1/08 ,  G05D1/06 ,  G08B23/00

CPC classification number: G01C5/005 ,  G01P1/08 ,  G05D1/0646

Abstract: A system for warning the pilot of a tactical aircraft in a tactical maneuver such as a dive of the point at which recovery must be immediately initiated to prevent the aircraft from descending below a minimum desired altitude monitors and the altitude, descent rate and pitch angle of the aircraft, and issues a voice warning when recovery must be initiated. The system also provides warnings of dangerous flight conditions during non-tactical or common route segments of a flight such as the take-off, landing and cruise segments of a flight. Circuitry responsive to the arming of the weapons of the aircraft enables the tactical warning portion of the system and disables certain functions of the non-tactical portion of the sysem that may cause false warnings to be genrated during tactical manuevers.

Abstract translation: 一种用于在战术机动中警告飞行员的系统，例如必须立即启动恢复的点的潜水，以防飞机低于最小期望高度监视器的高度，下降率和俯仰角 飞机，并且必须启动恢复时发出声音警告。 该系统还提供飞行非战术或共同航段的危险飞行状况警告，例如飞机的起飞，着陆和巡航段。 对飞机武器作出反应的电路使得系统的战术警告部分能够使系统的非战术部分的某些功能失效，从而可能导致战术中的虚警。

公开(公告)号：US5046447A

公开(公告)日：1991-09-10

申请号：US525389

申请日：1990-05-17

Applicant: Karl O. Steinke ,  Milton R. Knight

Inventor： Karl O. Steinke ,  Milton R. Knight

IPC: B61K9/04 ,  F01D17/08 ,  F16N29/00 ,  G01K11/06 ,  G07C3/00

CPC classification number: F16N29/00 ,  B61K9/04 ,  F01D17/085 ,  G01K11/06 ,  G07C3/00

Abstract: A limit sensing device for permanently indicating when a predetermined temperature limit has been reached in a fluid conduit, includes a housing mounted on the conduit in heat transmitting relation with the fluid and an indicator movable in the housing between a retracted position and an activated, non-resettable, extended position to provide a visual indication that the predetermined temperature limit has been reached. The indicator is biased outwardly towards the activated position and a retainer in the form of a separate and discrete annulus formed of fusible material normally secures the indicator in the retracted position within the housing against the force of a biasing spring until the predetermined temperature has been reached causing the retainer to melt or fuse and thereby release the indicator to move outwardly to the extended position providing a visual indication signaling that an overtemperature condition has been reached in the fluid conduit.

Abstract translation: 用于在流体导管中永久地指示何时达到预定温度极限的极限感测装置包括：与流体以热传递关系安装在导管上的壳体，以及可在壳体内在缩回位置和活动的非活动状态之间移动的指示器 可延伸的位置，以提供达到预定温度极限的视觉指示。 指示器朝着启动位置向外偏置，并且由易熔材料形成的单独和离散的环形形式的保持器通常将该指示器抵抗偏置弹簧的力保持在壳体内的缩回位置，直到达到预定温度 导致保持器熔化或熔化，从而释放指示器向外移动到延伸位置，提供指示已经在流体导管中达到过热状态的视觉指示。

公开(公告)号：US5024089A

公开(公告)日：1991-06-18

申请号：US521836

申请日：1990-05-08

Applicant: Brian L. Norling

Inventor： Brian L. Norling

IPC: G01P1/00 ,  G01P15/13

CPC classification number: G01P1/006 ,  G01P15/132

Abstract: A transducer having compensation for a deflection due to an applied stress. The transducer a support ring (32) having a proof mass (34) cantilevered on a pair of flexures (38) between the magnets (26, 28) of a stator in which the transducer is mounted. Deflection of the support ring due to an imbalanced applied force is compensated by either moving the pads (30) used to mount the support ring, moving the centroid of capacitance (128) of the proof mass, or by modifying the support ring to provide a pair of moment arms (156), each approach insuring that an axis of deflection (102, 130) of the support ring is coaligned with the centroid of capacitance, thereby minimizing a bias error in the transducer output.

Abstract translation: 具有由于施加的应力引起的偏转补偿的换能器。 所述换能器具有支撑环（32），所述支撑环（32）具有悬臂安装在所述换能器的定子的所述磁体（26,28）之间的一对挠曲件（38）上的检测质量块（34）。 通过移动用于安装支撑环的垫（30），移动证明块的电容（128）的质心，或通过修改支撑环来提供支撑环来补偿由于不平衡施加的力而导致的支撑环的偏转， 一对力臂（156），每个方法确保支撑环的偏转轴（102,130）与电容的重心共同对准，从而最小化换能器输出中的偏置误差。

公开(公告)号：US4987413A

公开(公告)日：1991-01-22

申请号：US58111

申请日：1987-06-04

Applicant: Michael M. Grove

Inventor： Michael M. Grove

IPC: G01C21/00 ,  B64D45/04 ,  G01C5/00 ,  G01S13/00 ,  G05D1/08 ,  G08B23/00

CPC classification number: G01C5/005

Abstract: A proximity to terrain warning system for aircraft utilizes a first set of warning criteria to generate a warning in the event of insufficient terrain clearance after take off. A different set of criteria are employed to generate warnings when the aircraft in in a cruise or approach phase of flight or on a tactical mission. Mode switching is provided to select the appropriate criteria and to select an excessive descent after take-off set of warning criteria in addition to the first set of criteria when appropriate.

Abstract translation: 靠近飞机地形预警系统利用第一套警告标准，在起飞后地形清关不足的情况下产生警告。 当航空器在巡航或接近飞行阶段或战术任务中时，采用不同的标准来产生警告。 提供模式切换以选择适当的标准，并且在适当的时候，除了第一组标准之外，在起飞设定的警告标准之后选择过大的下降。

公开(公告)号：US4968909A

公开(公告)日：1990-11-06

申请号：US369373

申请日：1989-06-21

Applicant: Rand H. Hulsing, II

Inventor： Rand H. Hulsing, II

IPC: H01F7/14 ,  H02K26/00 ,  H02K33/12

CPC classification number: H02K26/00 ,  H01F7/14 ,  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 relative high.

Abstract translation: 紧凑的扭矩电机，向相对的结构提供双向，有限角度的无反应转矩。 电动机（10,150）包括X形铁心（12）以及设置在铁心的相对侧的第一和第二极片（14和16）。 X形芯（12）上的两个相对的腿包括横向于类似的第二芯部（20）的第一芯部（18）。 第一电磁线圈（22）形成在第一芯部上，第二电磁线圈（24）形成在第二芯部上。 当第一和第二电磁线圈交替通电时，靠近第一和第二极靴的端部设置的接片（38,40,44和46）被吸引到所得到的磁极（26和28,30和32）上， 使得所述极片相对于中心轴线（48）来回反向旋转。 由第一和第二电磁线圈产生的磁通量通过凸片和相对磁极之间的第一和第二极片传送。 由于极片重量轻，电动机的转动惯量非常低，其效率相对较高。

公开(公告)号：US4944184A

公开(公告)日：1990-07-31

申请号：US338808

申请日：1989-04-14

Applicant: Graeme A. Blake ,  Brian L. Norling ,  Mitchell J. Novack

Inventor： Graeme A. Blake ,  Brian L. Norling ,  Mitchell J. Novack

IPC: G01P15/02 ,  G01P15/125 ,  G01P15/13

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

Abstract: An improved accelerometer of the type that includes a proof mass suspended from a support by one or more flexures, such that the proof mass can pivot with respect to the support about a hinge axis. The proof mass includes a paddle attached to the flexures, the paddle having first and second paddle surfaces. The coil is mounted on the first paddle surface, and the accelerometer includes a stator 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 of the proof mass is parallel to one of the paddle surfaces, and 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.

Abstract translation: 一种改进的加速度计，其包括通过一个或多个挠曲件从支撑件悬挂的证明物质，使得证明物质可以围绕铰链轴线相对于支撑件枢转。 检测质量包括附接到挠曲件的桨叶，桨具有第一和第二桨叶表面。 线圈安装在第一桨表面上，并且加速度计包括用于安装支撑件并用于与线圈形成磁路的定子。 该改进包括定位弯曲部，使得包含铰链轴线的平面和检测质量块的质心平行于其中一个桨叶表面，并且比另一个桨叶表面更接近一个桨叶表面。 在优选的布置中，包含铰链轴线和质心的平面与桨形表面中的一个和挠曲件近似共面。