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公开(公告)号：US4175243A
公开(公告)日：1979-11-20
申请号：US852477
申请日：1977-11-17
Applicant: James P. Corbett
Inventor： James P. Corbett
CPC classification number: G01L9/0022 , G01L1/162 , Y10S73/04
Abstract: A fluid pessure transducer comprises a plate-like crystal. The pressure gives rise to a force which is applied by two seatings situated by opposing edges of a crystal in a direction generally along the face of the crystal. The change in oscillating frequencies of a part of the crystal provides a measure of the force and hence the fluid pressure.In the past a second matched crystal has been employed to provide compensation for inaccuracy brought about by undesired frequency deviation due to ambient temperature change of the instrument. The present invention consists of a single crystal having on it two oscillating areas simulating the behaviour of the original pair of crystals. The single crystal facilitates manufacture of the device and improves the accuracy of the instrument.
Abstract translation: 流体静止换能器包括板状晶体。 该压力产生一个力，该力通过沿着晶体的表面的方向由晶体的相对边缘定位的两个座施加。 晶体的一部分的振荡频率的变化提供了力的测量，并因此提供了流体压力的量度。 在过去，已经采用第二匹配晶体来提供由于仪器的环境温度变化引起的由不期望的频率偏差引起的不精确度的补偿。 本发明由单晶构成，其上具有模拟原始晶体对的行为的两个振荡区域。 单晶便于制造器件，提高了仪器的精度。
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公开(公告)号：US4144747A
公开(公告)日：1979-03-20
申请号：US873459
申请日：1978-01-30
Applicant: Walter F. Datwyler, Jr.
Inventor： Walter F. Datwyler, Jr.
CPC classification number: G01L1/162 , G01L9/0022 , Y10S73/04
Abstract: The invention is a single crystal force transducer in which the crystal is simultaneously resonated in two different modes having substantially the same frequency-temperature characteristics and different frequency-force characteristics. The difference in the change between the two resonant frequencies with a force applied to the crystal is therefore a temperature compensated signal indicative of the applied force. In the preferred embodiment the two resonant modes are anharmonic modes having a plurality of antinodes angularly disposed to each other.
Abstract translation: 本发明是单晶力传感器，其中晶体同时以两种具有基本上相同的频率 - 温度特性和不同频率 - 力特性的不同模式共振。 因此，施加到晶体的力的两个谐振频率之间的变化的差异是指示所施加的力的温度补偿信号。 在优选实施例中，两个谐振模式是具有彼此成角度地设置的多个波腹的非谐波模式。
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143.发明授权
公开(公告)号：US4126801A
公开(公告)日：1978-11-21
申请号：US734191
申请日：1976-10-20
Applicant: James P. Corbett
Inventor： James P. Corbett
CPC classification number: G01L9/0022 , G01L1/162 , G01L13/025
Abstract: A transducer capable of measuring force or fluid pressure comprises one or more plate-like crystals; electrical means for exciting each crystal into resonance; a base upon which sits a first seating which supports the lower edge of said one crystal; a second seating disposed at the upper edge of the crystal so as to secure the crystal in a position perpendicular to said base; each seating comprising cylindrical or semi-cylindrical surfaces the cylindrical faces of which, are arranged to bear on the crystal edge so as to produce, in response to said force, a change of the resonant frequency of that crystal with respect to the other crystal or crystals.
Abstract translation: 能够测量力或流体压力的换能器包括一个或多个板状晶体; 用于激发每个晶体进入共振的电气装置; 一个基座，其上设有一个支撑所述一个晶体的下边缘的第一座位; 设置在晶体的上边缘处的第二座，以便将晶体固定在垂直于所述基底的位置; 每个座部包括圆柱形或半圆柱形表面，其圆柱形表面被布置成承载在晶体边缘上，以便响应于所述力而产生该晶体相对于另一晶体的共振频率的变化，或 晶体。
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公开(公告)号：US3891870A
公开(公告)日：1975-06-24
申请号：US45145774
申请日：1974-03-15
Applicant: CORBETT PATRICK JAMES
Inventor： CORBETT JAMES PATRICK
Abstract: This invention relates to an oscillating crystal force transducer having a frame containing a plate-like piezo electric crystal mounted upright with respect to a base plate in the frame and a spigot arranged to bear on the upper edge of the crystal to transmit thereto a force to be transducer. The spigot is provided with a resilient spring mounting to maintain the alighment of the spigot with respect to the crystal, and to hold the crystal in position.
Abstract translation: 本发明涉及一种振荡晶体力传感器，其具有框架，该框架包含相对于框架中的基板垂直安装的板状压电晶体，以及插座，其布置成承载在晶体的上边缘上以将其传递到 换能器。 插口设置有弹性弹簧安装件，用于保持插口相对于晶体的指示，并将晶体保持在适当位置。
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公开(公告)号：US3308476A
公开(公告)日：1967-03-07
申请号：US33917664
申请日：1964-01-21
Applicant: CLAUS KLEESATTEL
Inventor： CLAUS KLEESATTEL
CPC classification number: G01L1/162 , G01L1/10 , G01N3/405 , G01N2203/0051 , G01N2291/02827 , Y10S73/04
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Patent Agency Ranking
公开(公告)号：US3274828A
公开(公告)日：1966-09-27
申请号：US30485263
申请日：1963-08-27
Applicant: PULVARI CHARLES F
Inventor： PULVARI CHARLES F
IPC: G01L1/16
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公开(公告)号：US20240346895A1
公开(公告)日：2024-10-17
申请号：US18751787
申请日：2024-06-24
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shozo OTERA
Abstract: An actuator unit includes an actuator configured to cause a vibration by a vibrated member when a force is applied to the vibrated member and a first sensor configured to generate a first detection signal indicating a first relationship of a first physical quantity varying with time. The first physical quantity is related to the vibration of the vibrated member, a variation cycle of the first physical quantity changes based on a magnitude of the force applied to the vibrated member. The actuator unit also includes a processing circuit configured to process the first detection signal, extract a parameter indicative of the variation cycle of the first physical quantity, and estimate the magnitude of the force applied to the vibrated member based on the parameter.
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公开(公告)号：US11879793B2
公开(公告)日：2024-01-23
申请号：US17586289
申请日：2022-01-27
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Yongfang Li
Abstract: A vibration sensor according to an embodiment includes a laminated body. The laminated body includes a support layer a first end of which is fixed; a piezoelectric layer on the support layer; an insulating layer disposed between the support layer and the piezoelectric layer; a common electrode disposed on a first principal surface of the piezoelectric layer; a first sensing electrode disposed in a first area on a second principal surface of the piezoelectric layer on the side opposite to the first principal surface; and a drive electrode disposed in a second area different from the first area on the second principal surface of the piezoelectric layer. The first area is located near the first end of the support layer.
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149.发明申请公开(公告)号：US20180156063A1
公开(公告)日：2018-06-07
申请号：US15827494
申请日：2017-11-30
Applicant: Rolls-Royce Deutschland Ltd & Co KG
Inventor： Rudolf LUECK
CPC classification number: F02C9/28 , F01D21/003 , F01D21/04 , F02C9/46 , F04D27/001 , F05D2220/323 , F05D2220/329 , F05D2240/50 , F05D2240/60 , F05D2260/80 , F05D2270/021 , F05D2270/051 , F05D2270/335 , F05D2270/808 , F16C19/522 , F16C2233/00 , F16C2360/23 , G01L1/16 , G01L1/162 , G01L5/0019 , G01L5/12 , G05B13/042 , Y02T50/671
Abstract: It is provided an arrangement for detecting a shaft break. The arrangement comprising a shaft, a bearing on which the shaft is mounted so as to be rotatable about a rotational axis, a force sensor which is arranged on the bearing and is configured to measure an axial force component, applied by the shaft, in parallel with the rotational axis of the shaft, and an evaluation unit which is configured to receive measured values of the force sensor and to determine, on the basis of comparison of a plurality of measured values, whether there is a change in the axial force component, in order to detect a shaft break of the shaft.
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公开(公告)号：US20170276559A1
公开(公告)日：2017-09-28
申请号：US15532079
申请日：2015-11-25
Inventor： Davinson CASTANO CANO , Mathieu GROSSARD , Arnaud HUBERT
Abstract: A resonant sensor comprises a proof body subjected to a torque of forces produced by an external mechanical structure, the body comprising: a first and a second interface that can each come into contact with the structure; at least two sensitive zones arranged between these two interfaces; a sensitive zone formed by a plate embedded in a frame secured mechanically to the interfaces, the plate able to resonate under the effect of local mechanical excitations produced at particular points by excitation transducers bearing the plate at several resonant frequencies, sensors picking up the resonant signals produced at the particular points, measurement means measuring the resonant frequency shifts of signals which are linear combinations of the resonant signals picked up, the shifts being a function of mechanical stresses induced by the forces and transmitted to the plate by the frame, the components of the torque of forces being determined from the resonant frequency shifts measured on the plates of the sensitive zones.
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