| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Process and device for minimizing in an inertial measurement system the error due to a perturbing motion in the retrieval of the velocity | US526982 | 1995-09-12 | US5719772A | 1998-02-17 | Christian Benes |
| A process and a device are provided in a strapdown inertial measurement system for minimizing the error due to any perturbing motion in the retrieval of the velocity. The device is connected to an assembly of accelerometers and to an assembly of gyrometers and it includes a first peripheral computer for carrying out vector multiplications, a second peripheral computer for carrying out vector products, and a central computer connected to the first and second peripheral computers and coordinating the various calculations. | ||||||
| 42 | Multiple-axis gas flow type angular velocity sensor | US408996 | 1995-03-23 | US5567877A | 1996-10-22 | Tomoyuki Nishio; Nariaki Kuriyama; Nobuhiro Fueki |
| A multiple-axis gas flow type angular velocity sensor which can accurately and stably detect the magnitude and direction of angular velocities acting in any direction on the sensor main body is provided by performing precision processing on semiconductor substrates using a photo engraving process, which is a process for producing semiconductors, and forming a plurality of pairs of thermosensitive resistor elements, a gas passage and a sensor case by laminating a plurality of semiconductor substrates. | ||||||
| 43 | Gas flow type angular velocity sensor and method of constructing same | US889817 | 1992-05-29 | US5438871A | 1995-08-08 | Takashi Hosoi; Mizuho Doi; Tomoyuki Nishio; Satoshi Hiyama |
| A gas flow type angular velocity sensor comprising two semiconductor substrates wherein only the first semiconductor substrate is provided with a groove etched thereon constituting the gas path and the second semiconductor substrate is provided with paired heat wires formed thereon. The two semiconductor substrates are coupled and bonded to each other to form the sensor body. | ||||||
| 44 | Superconducting gyroscope | US210085 | 1994-03-16 | US5406847A | 1995-04-18 | David A. Rowe; Binneg Y. Lao |
| A superconducting gyroscope of the present invention includes a circuit which produces a magnetic field which is synchronous with the rate of rotation experienced by the gyroscope, a sensing circuit for converting the synchronous magnetic field into an electric signal, a first shield made of superconducting material for performing shielding of external stray fields, and a second shield disposed inside the first shield and made of superconducting material for expelling trapped residual magnetic flux. The synchronous magnetic field producing circuit includes a magnetic core shaped in a toroid with an air gap. The magnetic core may alternatively be formed in meandering shape by a plurality of separate magnetic core members with a plurality of air gaps therebetween. The sensing circuit includes at least one SQUID which can be directly coupled to the magnetic core. The sensing circuit may also include a superconducting pick-up coil surrounding a portion of the magnetic core for picking up the synchronous magnetic field and producing a London field, and an input coil magnetically coupled to the SQUID. The SQUID and the magnetic core and/or other elements can be fabricated on a single substrate or chip. | ||||||
| 45 | Coriolis indicator for situational awareness | US934226 | 1992-08-25 | US5353226A | 1994-10-04 | Daniel W. Repperger |
| A system for indicating the presence of Coriolis accelerations within an aircraft which might affect pilot perception of aircraft attitude and spatial orientation, which comprises sensors for measuring vehicle angular position, rotations and velocities operatively connected to an onboard computer program which calculates the Coriolis accelerations according to an analysis presented herein and presented on a display to the pilot. | ||||||
| 46 | Low frequency angular velocity sensor | US619312 | 1990-11-28 | US5176030A | 1993-01-05 | Darren R. Laughlin |
| A magnetohydrodynmic angular rate sensor is described. A housing supports first and second coaxial proof masses in respective annular channels, permitting relative motion between the axis of the proof masses and the housings. First and second magnets associated with each annular channel result in an electric potential being generated across each channel proportional to the relative circumferential velocity between the proof masses and the housing. The annular channels are connected together to form a continuous pumped fluid circuit which introduces a radial flow velocity in each channel. At low rotational frequencies, a circumferential velocity component is induced in the proof masses due to Coriolis acceleration which results in a measurable electrical voltage across the annular channels. The low frequency response of the sensor is therefor extended to lower frequencies. | ||||||
| 47 | Optoelectronic motion and fluid flow sensor with resilient member deflected by fluid flow | US564006 | 1990-08-07 | US5120951A | 1992-06-09 | James G. Small |
| A sensor includes a light source (24) and photosensor (28) which are disposed on opposite sides of a fluid flow passageway. A resilient member is fixedly supported at one end or edge and entrained in the fluid (14) for varying the amount of light incident on the photosensor (28) from the light source (24) as a function of the amount of deflection of the resilient member caused by motion of the fluid (14) in the passageway. The resilient member may be an optical fiber (18) which transmits light from the light source (24) toward the photosensor (28). Alternatively, the resilient member may be a curtain (62) which variably blocks propagation of light from the light source (24) to the photosensor (28). The passageway may be defined by a container (12) which is filled with the fluid (14), and the sensor constructed to sense rotational or linear motion of the container (12) relative to the fluid (14). In this case, the fluid resists movement due to stationary inertia, thereby causing relative deflection of the entrained resilient member. Alternatively, the passageway may be maintained stationary, and a fluid directed to flow therethrough which causes deflection of the resilient member and enables measurement of the rate of fluid flow through the passageway. | ||||||
| 48 | Gas flow type angular velocity sensor | US541706 | 1990-06-21 | US5107707A | 1992-04-28 | Tsuneo Takahashi; Masayuki Ikegami; Tomoyuki Nishio; Takahiro Gunji |
| A gas flow type angular velocity sensor comprising two semiconductor substrates with all components formed thereon by use of semiconductor technology and IC technology, which are coupled with each other to form therein a pair of heat wires, a gas path and a nozzle hole for injecting a gas flow toward the paired heat wires in the gas path. Two heat wires of the pair change their resistance-temperature characteristics in accordance with a deflection of the gas flow due to the action of angular velocity and a difference between two changed values is picked up and amplified by a resistance bridge circuit and an amplifier circuit formed on the semiconductor substrates to produce an output signal proportional to the angular velocity to be measured. A miniature pump formed on semiconductor substrates and drivable by a piezoelectric element provides a stabilized gas flow in the sensor. As thus constructed the sensor is compact, accurate and suitable for mass-production and free from disadvantages of conventional sensors. | ||||||
| 49 | Gas rate sensor | US193404 | 1988-05-12 | US4930349A | 1990-06-05 | Fumitaka Takahashi; Kunio Okazaki; Masaru Shiraishi; Masayuki Takahashi; Kazufumi Obara; Koji Yorimoto; Tohru Tanabe |
| The gas rate sensor in the present invention is provided with a holder assembly having a metallic holding portion for holding flow sensors and a cylindrical casing containing the holder assembly and heater wires which are wound around the outside thereof. The outer periphery of the holding portion is provided with a plural number of projections which are brought into compressive contact with the inner periphery of the casing for enabling pressing of the holder assembly into the casing. A temperature detection element is disposed in a gas flow passage between the holder assembly and the casing for performing energizing control of the heater wires. | ||||||
| 50 | Angular rate sensor nozzle | US151762 | 1988-02-03 | US4856332A | 1989-08-15 | Mario T. Lopicolo; Richard E. Swarts |
| An angular rate sensor is provided having a specially shaped nozzle which shapes the velocity profile of a gas stream passing through a nozzle so that a linear portion of the profile impinges upon the resistive elements of the sensor even when large angular rates of turn in a plane of sensitivity are encountered. The nozzle is generally rectangularly shaped having a pair of parallel sides arranged perpendicularly to the resistive elements of the sensor and a pair of connecting sides. | ||||||
| 51 | Jet flow in an angular velocity sensor | US663519 | 1984-10-22 | US4716763A | 1988-01-05 | E. Marston Moffatt; Richard E. Swarts |
| An angular velocity sensor utilizing the Coriolis effect on a fluid jet employs increased spacing between the sensing elements to increase the scale factor and to reduce flow disturbances. A metal diaphragm pump is utilized to improve the ability to control the flow rate. Flow disturbances are further reduced by using a single, symmetrical central flowhole, eliminating curtain holes, and providing only two discharge paths oriented 180.degree. apart. | ||||||
| 52 | Rotational motion fluid loop sensor using magnetically levitated detecting element | US855184 | 1986-04-23 | US4692614A | 1987-09-08 | David J. M. Wilson; Paul E. G. Cope |
| A rotational motion sensor has a circular, tubular body (1) filled with a fluid. A sensor head (6) forming part of the body houses a movable detecting element in the form of a piston (7) which is magnetically levitated so that it is kept out of contact with the sensor body. Movement of the piston is detected in a number of different ways including using a variable magnetic reluctance pick-off (4, 5). | ||||||
| 53 | Gas-rate sensor | US653450 | 1984-09-24 | US4584878A | 1986-04-29 | Yasunobu Katsuno |
| A gas-rate sensor is disclosed which comprises, similar to a conventional one, a hollow cylindrical casing with a gas sealed therein, a gas pump arranged within the casing at its one end to circulate the gas therein, a nozzle means arranged within the casing at its other end to inject the gas as a gas flow therein, and a pair of thermosensitive elements disposed inside the casing so as to be exposed to the gas flow, whereby when the casing is applied an angular velocity the gas flow is deflected to cool the two thermosensitive elements unequally causing a difference in electric resistance between them, the measurement of the difference in resistance making it possible to detect the angular velocity, and which is characterized in that a heater plate is disposed within the casing so as to directly heat the gas circulated therein in order to compensate for the influence of the outside temperature on the accuracy of the measurement of the angular velocity instead of heating the casing from its outer periphery by the wound heating wires as is usual in a conventional sensor to achieve the same object, the present invention allowing much earlier and more stable heating of the sealed gas than in a conventional one. | ||||||
| 54 | Moving coil miniature angular rate sensor | US823580 | 1977-08-11 | US4114451A | 1978-09-19 | Jack H. Crittenden; Joseph W. Bitson |
| A steering rate sensing device for rolling air frames includes a base member for attachment to the air frame, a magnetic member fixed to the base member, and a pick up coil pivotally mounted to the base in close proximity to the magnet such that movement of the coil relative to the magnet generates a signal proportional to the steering rate of the rotating body. | ||||||
| 55 | Fluidic angular rate sensor null error compensation | US660961 | 1976-02-23 | US4026159A | 1977-05-31 | Donald H. Isakson; Joseph P. Hu; Max A. Schaffer |
| In a fluidic angular rate sensor in which a pair of temperature sensitive resistive elements are differentially cooled by a jet of fluid, the direction of which lags the position of the resistive elements when the rate sensor is rotated in the plane of sensitivity, undesired, long term errors that result in the lack of a zero null (when the unit is not undergoing any angular rate) are compensated for by introducing a voltage equal to the zero-rate null offset, determined with the velocity of the fluid jet reduced to a point below which it has any appreciable effect on the sensing bridge (simulating static conditions), together with an input to the bridge to offset its output so that the static null offset to be usable to compensate the dynamic null offset (that is, the offset in the null determined with the fluid jet in full operation). In one embodiment, the bridge is offset during the static null error determination, thereby to offset the stored, null error; in another embodiment, the bridge is offset during operation, but not during the static null determination, so the offset and the static null error together compensate for the dynamic null error. The fluid jet may simply be reduced, and not completely stopped, thereby to avoid static laminar conditions and pressure differentials in the static fluid resulting from accelerations; or, the fluid jet may be completely eliminated during the compensating null voltage generation procedure. | ||||||
| 56 | Unitary fluidic angular rate sensor | US661904 | 1976-02-25 | US4020700A | 1977-05-03 | Mario T. Lopiccolo; Max A. Schaffer; George A. Jachyra |
| The nozzle of an angular rate sensor which directs a stream of fluid toward a pair of temperature-dependent sensing resistor elements is formed in a major block which defines the chamber within which the sensing elements are also mounted, thereby to mitigate problems of aligning the jet with respect to the chamber and of aligning the sensing elements with respect to the nozzle. Within the casing, only the nozzle block, a diaphragm pump assembly, and an anvil need be mounted; these are secured by a lock nut, the pressure thereof being applied through a conical Belleville spring. A fine weld is used to hermetically seal the element, but the weld can be cut off without damage to the unit; so that by loosening the lock nut, the entire apparatus can be disassembled without destruction. Reference resistors, for a bridge to measure changes in the sensing elements, are mounted directly within the unit, to avoid bridge misbalances due to external connections. | ||||||
| 57 | Tactical rate sensor | US545995 | 1975-01-31 | US3960691A | 1976-06-01 | Bart J. Zoltan; John L. Evans |
| A rate sensor comprising a glass annulus filled with an electrolytic fluid. A plurality of electrodes in contact with the electrolyte have an electrical field established between them which in turn starts a flow of ions between the electrodes. When the device is rotated about a predetermined axis the flow of ions between certain electrodes is increased. Electronic means connected to output electrodes senses the change in ion flow and determines the rotational rate of the vehicle upon which the sensor is mounted. | ||||||
| 58 | Angular velocity measuring apparatus using ionized gas in an endless loop | US41153873 | 1973-10-31 | US3910122A | 1975-10-07 | EVANS JOHN L; HOFFMAN JAY; FERRISS LINCOLN S |
| Gyroscopic apparatus is disclosed in which the reference element employed in measuring angular velocity comprises a moving stream of ionized gas. An ion collector is disposed in a conduit in which the gas stream moves and changes in angular velocity of the conduit relative to the gas stream are determined by sensing changes in ion collection.
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| 59 | Fluid rotor motion sensor | US12790671 | 1971-03-25 | US3831454A | 1974-08-27 | HOFFMAN J |
| A multipurpose sensing device is disclosed having the sensing capabilities of both a two axis rate gyro and a single axis accelerometer wherein these capabilities are achieved by measuring the displacement of a rotating body of fluid which results when the device disclosed is subjected to angular velocity rates or rectilinear accelerations.
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| 60 | Gravity-compensating means for fluid jet deflection-type instrument | US3635095D | 1969-06-05 | US3635095A | 1972-01-18 | SCHUEMANN WLLFRED C |
| An instrument wherein the deflection of a fluid jet, induced for example by the angular movement of the instrument, produces a signal proportional to the deflection, and particularly means in such an instrument for compensating for unequal deflection of the jet in the different angular positions of the jet about its longitudinal axis, which deflection is induced by local conditions at the sensing means such as convection currents caused by the heating of the jet fluid by the sensing means; the compensating means comprising a flow constrictor located concentrically of the jet downstream from the sensing means and acting to align the fluid flow axially relative to the unit as it passes over the sensing means whereby the thermal deflection of the jet caused by heating as it passes over the sensing elements is substantially eliminated.
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