公开(公告)号：US20200208535A1

公开(公告)日：2020-07-02

申请号：US16812644

申请日：2020-03-09

Applicant: United Technologies Corporation

Inventor： Sheridon Everette Haye

IPC: F01D21/00 ,  G01M15/14 ,  F02K3/06 ,  G01H1/00 ,  F02C7/36 ,  G01H1/10 ,  F01D5/06 ,  F02C7/00

Abstract: A drive system of a gas turbine engine includes a first drive shaft and a second drive shaft operable to rotate within the gas turbine engine, a first sensor operable to detect rotation of the first drive shaft, a second sensor operable to detect rotation of the second drive shaft, and a processing system coupled to the first sensor and the second sensor. The processing system is operable to determine a timing variation based on output of the first sensor and output of the second sensor, determine a torsional deflection between the first drive shaft and the second drive shaft based on the timing variation, and detect a health status of the drive system based on the torsional deflection.

公开(公告)号：US10320314B2

公开(公告)日：2019-06-11

申请号：US15582421

申请日：2017-04-28

Applicant: The Boeing Company

Inventor： Michael T. Fox ,  Kamiar J. Karimi ,  Sheau-Wei J. Fu ,  Eugene V. Solodovnik ,  Paul A. Mezs ,  Jerry E. Farstad

IPC: H02P9/10 ,  H03B1/04 ,  B64D27/02 ,  G01H1/10

Abstract: Systems and methods are provided for an aircraft propulsor configured to generate electrical power through a variable frequency generator in response to rotation of a gear train. The aircraft propulsor includes compensation circuitry. The aircraft propulsor further includes exciter circuitry that, when powered by an excitation signal, generates a magnetic field that interacts with a rotating variable frequency generator to generate electrical power. The exciter circuitry may be powered by at least a portion of the power generated by the variable frequency generator. The compensation circuitry may adjust the excitation signal to reduce the effect of torsional oscillation of the gear train and/or the variable frequency generator on the quality of power produced by the variable frequency generator.

公开(公告)号：US5652710A

公开(公告)日：1997-07-29

申请号：US348004

申请日：1994-12-01

Applicant: Yuuko Fujii ,  Kenzo Ohji

Inventor： Yuuko Fujii ,  Kenzo Ohji

IPC: G01H1/10 ,  G01N11/16 ,  G01N33/02 ,  H05B6/80

CPC classification number: H05B6/6411 ,  G01H1/10 ,  G01N11/16 ,  G01N33/02

Abstract: A turntable having a food of solid or liquid put in a container is rotated during a predetermined time period and then the rotation of the turntable is suspended. After the turntable is suspended, an amplitude of vibration of the turntable is detected by a vibration sensor, and when the amplitude of vibration is a predetermined value or more, the food is determined liquid, on the other hand, when the amplitude of vibration is smaller than the predetermined value, the food is determined to be solid.

Abstract translation: 将具有放入容器内的固体或液体的食物的转盘在预定时间段内旋转，然后转盘转动。 在转台悬挂后，通过振动传感器检测转盘的振动幅度，当振动振幅为预定值以上时，食物被确定为液体，另一方面，振动振幅为 小于预定值，确定食物是固体。

公开(公告)号：US5390545A

公开(公告)日：1995-02-21

申请号：US2557

申请日：1993-01-11

Applicant: Tien D. Doan

Inventor： Tien D. Doan

IPC: G01H1/10

CPC classification number: G01H1/10

Abstract: An apparatus for measuring torsional vibrations of rotating machinery is provided. A wheel having a plurality of spaced apart teeth is connected to the rotating machinery. A sensor detects the speed of wheel rotation and responsively produces a speed signal that has a frequency proportional to the rotational wheel speed. A timing device receives the speed signal, determines the period of the most recent pulse of the speed signal, and responsively produces an instantaneous period signal that has a value representative of the determined period. A microprocessor receives the instantaneous period signal, determines an instantaneous speed value of the rotating wheel and an average speed value of the rotating wheel based on previous wheel rotations. The microprocessor further produces an instantaneous torsional velocity signal that has a value equal to the difference of the average speed value and the instantaneous speed value, and an instantaneous torsional displacement signal in response to numerically integrating the torsional velocity signal value. Finally, an output device receives the instantaneous torsional signals and displays the representative values.

Abstract translation: 提供了一种用于测量旋转机械的扭转振动的装置。 具有多个间隔开的齿的轮连接到旋转机械。 传感器检测车轮旋转的速度，并且响应地产生具有与转轮速度成比例的频率的速度信号。 定时装置接收速度信号，确定速度信号的最近脉冲的周期，并且响应地产生具有表示确定周期的值的瞬时周期信号。 微处理器接收瞬时周期信号，基于先前的轮转轮确定旋转轮的瞬时速度值和旋转轮的平均速度值。 微处理器进一步产生具有等于平均速度值和瞬时速度值的差值的瞬时扭转速度信号，以及响应于扭转速度信号值的数字积分的瞬时扭转位移信号。 最后，输出装置接收瞬时扭转信号并显示代表值。

公开(公告)号：US5117148A

公开(公告)日：1992-05-26

申请号：US606286

申请日：1990-10-31

Applicant: Takeshi Nakamura ,  Katsumi Fujimoto ,  Jiro Inoue

Inventor： Takeshi Nakamura ,  Katsumi Fujimoto ,  Jiro Inoue

IPC: B06B1/06 ,  G01C19/5663 ,  G01H1/10 ,  H01L41/09

CPC classification number: G01C19/5663 ,  B06B1/0644 ,  G01H1/10 ,  H01L41/0913 ,  H01L41/092

Abstract: The vibrator includes a columnar vibrating body consisting of a piezoelectric material. The vibrating body is formed into a polygonal or cylindrical column and, when necessary, a through hole is formed axially thereof. Furthermore, the vibrating body is polarized. On side faces of the vibrating body, at least three external electrodes are formed. Also, when the through hole is to be formed, an internal electrode is formed on its inner circumferential surface. By applying the driving signal to these electrodes, the vibrating body bends and vibrates. And, when the rotational angular velocity is applied to the vibrating body about its axis, a coriolis force is produced responsive thereto. By this coriolis force, the vibrating direction of the vibrating body changes, and a voltage is produced between the two external electrodes. By measuring the voltage, the rotational angular velocity applied to the vibrator can be measured.

公开(公告)号：US4793186A

公开(公告)日：1988-12-27

申请号：US110986

申请日：1987-10-21

Applicant: Joseph D. Hurley

Inventor： Joseph D. Hurley

IPC: G01H11/06 ,  G01H1/10

CPC classification number: G01H1/10

Abstract: Apparatus and method for detecting torsional vibrations of the shaft of an exciter of a turbine-generator, according to which a permanent magnet generator is connected to be driven by the exciter shaft and has an electrical output for providing an output voltage having a frequency proportional to the rate of rotation of the exciter shaft; and the electrical output is connected to signal processing circuitry serving to derive a signal representative of torsional vibrations experienced by the exciter shaft.

公开(公告)号：US4435667A

公开(公告)日：1984-03-06

申请号：US372636

申请日：1982-04-28

Applicant: Henry H. Kolm ,  Eric A. Kolm

Inventor： Henry H. Kolm ,  Eric A. Kolm

IPC: G01H1/10 ,  H01L41/09 ,  H02N2/12 ,  H04R17/00

CPC classification number: H02N2/10 ,  G01H1/10 ,  H01L41/094 ,  Y10S310/80

Abstract: A piezoelectric rotary actuator including: a rotatable member; a spiral member fixed at its inner end to the rotatable member; one or more piezoelectric layers attached on one or both sides of the spiral member; means for rotatably supporting the rotatable member relative to the outer portion of the spiral member; and an electrode for applying a voltage across the piezoelectric layer or layers, to bend the spiral and rotate the rotatable member.

Abstract translation: 一种压电旋转致动器，包括：可旋转构件; 螺旋构件，其内端固定在可旋转构件上; 附接在所述螺旋构件的一侧或两侧的一个或多个压电层; 用于相对于所述螺旋构件的外部可旋转地支撑所述可旋转构件的装置; 以及用于在压电层上施加电压的电极，以弯曲螺旋并旋转可旋转构件。

公开(公告)号：US4283779A

公开(公告)日：1981-08-11

申请号：US21578

申请日：1979-03-19

Applicant: Arthur E. Lamel

Inventor： Arthur E. Lamel

IPC: G01H1/10 ,  G01V1/52 ,  G01V1/40

CPC classification number: G01H1/10 ,  G01V1/52

Abstract: A torsional acoustic wave generator for use in an acoustic drill-string telemetry system, the generator having a reaction mass rotatably mounted near the lower end of a drill string, and a fluid coupling for generating a torque between the reaction mass and the drill string and thereby applying a sudden torsional pulse to the drill string. In the disclosed embodiment of the invention, the fluid coupling comprises a number of chambers rigidly connected to the reaction mass, an equal number of vanes rigidly connected to the drill string and disposed in the cylinders, and a mud control valve for selectively directing drilling mud into the chambers to generate a torque between the chambers and the vanes, and thereby apply to the drill string a torsional pulse that is independent of such factors as drill-string angular velocity.

Abstract translation: 一种用于声学钻柱遥测系统的扭转声波发生器，该发生器具有可旋转地安装在钻柱的下端附近的反作用质量块和用于在反作用质量块和钻柱之间产生扭矩的流体联接器，以及 从而对钻柱施加突然的扭转脉冲。 在本发明的所公开的实施例中，流体联接器包括刚性地连接到反作用物质的多个室，与钻柱刚性连接并且设置在气缸中的相等数量的叶片，以及用于选择性地引导钻井泥浆的泥浆控制阀 进入腔室以在腔室和叶片之间产生扭矩，从而将钻柱施加到与钻柱角速度无关的扭转脉冲上。

公开(公告)号：US4282756A

公开(公告)日：1981-08-11

申请号：US56368

申请日：1979-07-10

Applicant: Albert J. Molnar ,  Fred H. Wolff ,  Donald G. Ramey

Inventor： Albert J. Molnar ,  Fred H. Wolff ,  Donald G. Ramey

IPC: G01H1/10 ,  G01H1/00 ,  G01H17/00 ,  G01L3/00 ,  G01M99/00 ,  G01N29/00

CPC classification number: G01H1/003

Abstract: This invention concerns apparatus for reliably estimating the strain on an inaccessible portion of a shaft of a turbine generator system which is susceptible to torsional oscillation. The strain is continuously predicted on a real time basis as a function of the modal analysis parameters of the shaft. Furthermore, system torque is detected electrically at the output of the generator. This signal along with signals representative of shaft angular velocity at the easily accessible ends thereof is provided to the modal analysis means as inputs. The provision of these latter system data allow for the elimination of an equal number of unknowns in the modal analysis representation, thus reducing the complexity of the analyzing system and increasing the reliability.

Abstract translation: 本发明涉及用于可靠地估计容易受扭转振荡的涡轮发电机系统的轴的不可接近部分的应变的装置。 作为轴的模态分析参数的函数，实时地连续地预测应变。 此外，在发电机的输出处电力检测系统转矩。 该信号连同代表其易于接近端的轴角速度的信号被提供给模态分析装置作为输入。 提供后一种系统数据允许在模态分析表示中消除相等数量的未知数，从而降低分析系统的复杂性并增加可靠性。

公开(公告)号：US4267733A

公开(公告)日：1981-05-19

申请号：US43679

申请日：1979-05-30

Applicant: Ichiji Shima ,  Tatsuo Yamamoto ,  Shigeru Yoshibayashi ,  Hiroshi Teshima ,  Akio Hizume ,  Tetsuo Iki ,  Takashi Yamamoto ,  Kyozo Kanamori ,  Kenzo Noguchi ,  Shinobu Kishikawa

Inventor： Ichiji Shima ,  Tatsuo Yamamoto ,  Shigeru Yoshibayashi ,  Hiroshi Teshima ,  Akio Hizume ,  Tetsuo Iki ,  Takashi Yamamoto ,  Kyozo Kanamori ,  Kenzo Noguchi ,  Shinobu Kishikawa

IPC: G01H1/10 ,  G01M99/00

CPC classification number: G01H1/10

Abstract: The present invention is a torsional vibration monitoring method and an apparatus for performing the same, in which torsional vibrations produced in a rotating shaft system for use in such as a turbine generator are measured at a small number of certain positions therealong at which the measurements are possible, the torsional vibrations are linearly decomposed and torsional vibrations at arbitrary positions on the rotating shaft system are estimated from the linear decompositions.

Abstract translation: 本发明是一种扭转振动监测方法及其执行装置，其中在诸如涡轮发电机的旋转轴系统中产生的扭转振动是以少量的某些位置进行测量的，其中测量值为 可能的是，扭转振动被线性分解，并且从线性分解估计旋转轴系上任意位置的扭转振动。