ES2343559A1 - Angular speed and torsion vibrations sensor based on permanent magnets. (Machine-translation by Google Translate, not legally binding) - Google Patents

Angular speed and torsion vibrations sensor based on permanent magnets. (Machine-translation by Google Translate, not legally binding) Download PDF

Info

Publication number
ES2343559A1
ES2343559A1 ES200800389A ES200800389A ES2343559A1 ES 2343559 A1 ES2343559 A1 ES 2343559A1 ES 200800389 A ES200800389 A ES 200800389A ES 200800389 A ES200800389 A ES 200800389A ES 2343559 A1 ES2343559 A1 ES 2343559A1
Authority
ES
Spain
Prior art keywords
rotation
permanent magnets
shaft
rings
angular speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
ES200800389A
Other languages
Spanish (es)
Other versions
ES2343559B1 (en
Inventor
Ramon Ferreiro Garcia
Francisco J. Perez Castelo
Andres Piñon Pazos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Universidade da Coruna
Original Assignee
Universidade da Coruna
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Universidade da Coruna filed Critical Universidade da Coruna
Priority to ES200800389A priority Critical patent/ES2343559B1/en
Publication of ES2343559A1 publication Critical patent/ES2343559A1/en
Application granted granted Critical
Publication of ES2343559B1 publication Critical patent/ES2343559B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
    • G01H11/02—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by magnetic means, e.g. reluctance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/46—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage
    • G01P3/465—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage by using dynamo-electro tachometers or electric generator

Abstract

Angular speed sensor and torsional vibrations based on permanent magnets. The proposed torsional vibration sensor consists of a pair of rings formed by permanent magnets located in a cross section of the axis in rotation, which, by virtue of their rotation movement with the shaft, induce an electromotive force in a coil interspersed between both poles of the magnet rings as a result of the rotation of the shaft with the magnet crown. The electromotive force generated as a consequence of the rotation of the shaft is conditioned, providing a signal representing the angular speed of rotation. This signal is processed by frequency analysis to give the instantaneous rotation speed, the amplitude and frequency of the torsional vibrations to which the axis is subjected. (Machine-translation by Google Translate, not legally binding)

Description

Sensor de velocidad angular y vibraciones torsionales basado en imanes permanentes.Angular speed and vibration sensor torsional based on permanent magnets.

Objeto de la invenciónObject of the invention

El objeto de la invención consiste en la medida de la amplitud y frecuencia de las vibraciones torsionales en ejes transmisores de par sometidos a cargas, para lo cual se parte de la medida de la velocidad angular instantánea. Un par de anillos formados por imanes permanentes ubicados en un extremo del eje en rotación, inducen una fuerza electromotriz en una espira intercalada entre los polos de ambos anillos como consecuencia de la rotación del eje al estar fijados los imanes. La fuerza electromotriz generada como consecuencia de la rotación del eje es acondicionada, proporcionando una señal que representa la velocidad angular de rotación. Esta señal es procesada mediante análisis frecuencial para proporcionar la velocidad de rotación instantánea, la amplitud y frecuencia de las vibraciones torsionales a las que está sometido el eje.The object of the invention consists in the measurement of the amplitude and frequency of torsional vibrations in axes torque transmitters subject to loads, for which part of the Measurement of instantaneous angular velocity. A pair of rings formed by permanent magnets located at one end of the shaft in rotation, induce an electromotive force in an interspersed loop between the poles of both rings as a result of the rotation of the shaft when the magnets are fixed. Electromotive force generated as a result of shaft rotation is conditioned, providing a signal that represents the angular velocity of rotation. This signal is processed by frequency analysis to provide instantaneous rotation speed, amplitude and frequency of torsional vibrations to which the axis.

Antecedentes de la invenciónBackground of the invention

Como resultado de un minucioso rastreo sobre el estado de la tecnología relacionada con los diferentes tipos de sensores de vibración torsional, se conocen esencialmente sensores de vibración torsional basados en la medida de fase entre dos tramos de eje, tal como se muestra en la figura 1. Con referencia a la figura 1, las vibraciones torsionales se manifiestan como variaciones de la velocidad angular o desplazamiento angular relativo entre dos puntos separados sobre un eje de rotación. En el estado de la tecnología actual, normalmente se utiliza un par de sensores electromagnéticos de velocidad angular (4). El sensor de vibración torsional mide la torsión en forma de diferencia de fases (8) capturada por el calculador de la diferencia de fase (6), que se desarrolla entre dos secciones de un tramo de eje en rotación que está sometido a cierta carga. La diferencia de fases obtenida es convertida a alta velocidad y procesada utilizando análisis frecuencial para determinar la amplitud y frecuencia de la vibración torsional mediante la carga mecánica en el extremo del eje (5).As a result of a thorough tracking on the state of technology related to the different types of torsional vibration sensors, essentially sensors are known of torsional vibration based on the phase measurement between two sections shaft, as shown in figure 1. With reference to the Figure 1, torsional vibrations manifest as angular velocity variations or angular displacement relative between two separate points on an axis of rotation. At current technology status, normally a couple of electromagnetic angular velocity sensors (4). Sensor torsional vibration measures torsion in the form of phase difference (8) captured by the phase difference calculator (6), which is develops between two sections of a rotating shaft section that It is subject to a certain load. The phase difference obtained is converted at high speed and processed using analysis frequency to determine the amplitude and frequency of the vibration torsional by mechanical loading at the shaft end (5).

En el estado actual de la técnica no se conocen sensores de vibración torsional implementados con tecnologías que no dependan de las medidas de fase entre dos tramos de un eje.In the current state of the art they are not known torsional vibration sensors implemented with technologies that do not depend on the phase measurements between two sections of an axis.

Con objeto de lograr un modelo de sensor de vibraciones torsionales que no dependa de la medida de fases, se propone una innovación fundamentada en la aplicación del principio de un taco-generador o magneto, la cual está basada en la inserción de una bobina entre los polos de un par de anillos de imanes permanentes ubicados en un extremo del eje o cualquier tramo intermedio del eje cuya vibración se quiere medir. La tensión generada como consecuencia de la inducción magnética, proporciona una señal de tensión proporcional a la velocidad angular instantánea. Si existen vibraciones torsionales, éstas se manifiestan como variaciones de la tensión inducida instantánea. La señal de tensión inducida sinónimo de velocidad angular es procesada para determinar la amplitud y frecuencia de vibración
torsional.In order to achieve a torsional vibration sensor model that does not depend on the phase measurement, an innovation is proposed based on the application of the principle of a taco-generator or magnet, which is based on the insertion of a coil between the poles of a pair of permanent magnet rings located at one end of the shaft or any intermediate section of the shaft whose vibration is to be measured. The voltage generated as a result of the magnetic induction, provides a voltage signal proportional to the instantaneous angular velocity. If there are torsional vibrations, these manifest themselves as variations of the instantaneous induced tension. The induced voltage signal synonymous with angular velocity is processed to determine the amplitude and frequency of vibration
torsional

Descripción de las figurasDescription of the figures

Para iniciar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características del invento, se acompaña a la presente memoria descriptiva, como parte integral de la misma, un juego de figuras en el que, con carácter ilustrativo y no limitativo, se representa lo siguiente:To start the description that is being performing and in order to help a better understanding of the characteristics of the invention, is accompanied herein descriptive, as an integral part of it, a set of figures in which, with an illustrative and non-limiting nature, represents next:

Figura 1. Sensor de vibraciones torsionales basado en el desfase de pulsos.Figure 1. Torsional vibration sensor based on pulse offset .

1.one.
Motor o elemento de transferencia de potencia mecánicaMotor or power transfer element mechanics

2.2.
Eje transmisor de par mecánicoMechanical torque transmitter shaft

3.3.
Par de ruedas dentadasPair of gear wheels

4.Four.
Captadores de pulsos y sensores de velocidad angularPulse sensors and speed sensors angular

5.5.
Carga mecánica en el extremo del ejeMechanical load at the shaft end

6.6.
Calculador de la diferencia de fasePhase Difference Calculator

7.7.
Analizador de espectro (FFT)Spectrum Analyzer (FFT)

8.8.
Diferencia de fasePhase difference 

       \newpage\ newpage

Figura 2. Sensor de vibraciones torsionales.Figure 2. Torsional vibration sensor .

10.10.
Imanes permanentes polarizados axialmenteAxially polarized permanent magnets

11.eleven.
Bobina inducida fijada a la carcasa o a la estructura que soporta el ejeInduced coil fixed to the housing or to the structure that supports the axis

12.12.
Acondicionador de señalSignal conditioner

13.13.
Procesador de señal FFT para determinar la velocidad angular, amplitud y frecuencia de las vibraciones torsionalesFFT signal processor to determine the speed angular, amplitude and frequency of vibrations torsional

14.14.
Eje cuyas vibraciones se midenShaft whose vibrations are measured 

       \vskip1.000000\baselineskip\ vskip1.000000 \ baselineskip

Figura 3. Esquema de una realización preferente del sensor de vibraciones torsionales.Figure 3. Scheme of a preferred embodiment of the torsional vibration sensor .

10.10.
Imanes permanentes polarizados axialmenteAxially polarized permanent magnets

11.eleven.
Bobina inducida fijada a la carcasa o a la estructura que soporta el ejeInduced coil fixed to the housing or to the structure that supports the axis

12.12.
Acondicionador de señalSignal conditioner

13.13.
Procesador de señal FFT para determinar la velocidad angular, amplitud y frecuencia de las vibraciones torsionalesFFT signal processor to determine the speed angular, amplitude and frequency of vibrations torsional

14.14.
Eje cuyas vibraciones se midenShaft whose vibrations are measured

15.fifteen.
Soporte de la corona de imanes permanentes de material no magnético ubicado en el extremo del eje o rotorCrown holder with permanent magnets non-magnetic material located at the end of the shaft or rotor 

       \vskip1.000000\baselineskip\ vskip1.000000 \ baselineskip
Descripción de la invenciónDescription of the invention

El sensor de velocidad angular y vibraciones torsionales basado en imanes permanentes esta constituido por una corona de dos anillos magnéticos polarizados axialmente, ubicados en una sección transversal del eje cuyas vibraciones torsionales se deben medir, el cual consta de:The angular velocity and vibration sensor torsionals based on permanent magnets is constituted by a crown of two axially polarized magnetic rings, located in a cross section of the shaft whose torsional vibrations are must measure, which consists of:

(a) Un par de anillos (10) formados por imanes permanentes polarizados axialmente y ubicados sobre un carrete de material no magnético en un extremo del eje en rotación, entre los que se induce una fuerza electromotriz en una bobina intercalada entre los polos de ambos anillos como consecuencia de la rotación del eje con los anillos (10) respecto a la bobina (11).(a) A pair of rings (10) formed by magnets axially polarized permanent and located on a reel of non-magnetic material at one end of the rotating shaft, between that an electromotive force is induced in an interleaved coil between the poles of both rings as a result of the rotation of the shaft with the rings (10) with respect to the coil (11).

(b) Una bobina (11) intercalada entre el par de anillos formados por imanes permanentes (10), en la cual se induce una fuerza electromotriz que es función de la velocidad instantánea de rotación del eje.(b) A coil (11) sandwiched between the pair of rings formed by permanent magnets (10), in which it is induced an electromotive force that is a function of instantaneous velocity of shaft rotation.

La tensión generada como consecuencia de la inducción magnética, proporciona una señal de tensión proporcional a la velocidad angular instantánea la cual es acondicionada (12). A partir de las características dinámicas de la señal de velocidad, medida como tensión generada en la bobina (11), esta tensión es procesada convenientemente para determinar, además de la velocidad angular de rotación del eje, la amplitud y frecuencia de vibración torsional mediante un procesador de señal (13) que calcula la Transformada Rápida de Fourier (FFT), poniendo a disposición del observador la velocidad de rotación del eje, la amplitud y la frecuencia de la vibración torsional del eje.The tension generated as a result of the magnetic induction, provides a voltage signal proportional to the instantaneous angular velocity which is conditioned (12). TO from the dynamic characteristics of the speed signal, measured as the voltage generated in the coil (11), this voltage is conveniently processed to determine, in addition to speed angular axis rotation, amplitude and vibration frequency torsional using a signal processor (13) that calculates the Fast Fourier Transform (FFT), making available to the observer axis rotation speed, amplitude and torsional axis vibration frequency.

Descripción de una realización preferenteDescription of a preferred embodiment

En la figura 3 se muestra la configuración preferida del sensor de vibración torsional. Consiste en un conjunto de piezas descritas en la figura 2, el cual está diseñado para ser instalado en el extremo libre del eje. Este modelo permite reducir el tamaño del sensor ya que al no estar instalado sobre la periferia del rotor, no depende de su diámetro.Figure 3 shows the configuration Preferred torsional vibration sensor. It consists of a set of pieces described in figure 2, which is designed to be installed on the free end of the shaft. This model allows to reduce the size of the sensor since not being installed on the periphery of the rotor, does not depend on its diameter.

Tal como se muestra en la figura 3, está constituido por un captador magnetodinámico de velocidad angular, el cual realiza la función de un generador de corriente continua o magneto (taco-generador) formado por la corona de imanes permanentes (10), una bobina (11) incrustada entre los polos del imán y un acondicionador-amplificador de señal (12). Posteriormente, la señal de velocidad obtenida en la magnitud de tensión eléctrica es procesada para obtener el espectro de frecuencias de vibración torsional por medio de la aplicación del algoritmo FFT. Esta operación de procesado de señal es efectuada por medio de un calculador adecuado. Para evitar la dispersión de las líneas de fuerza magnéticas, la corona de imanes permanentes va ensamblada sobre un carrete de eje de material no magnético de corta longitud (15), de tal forma que el campo magnético no es perturbado por el eje.As shown in Figure 3, it is constituted by a magnetodynamic angular velocity sensor, the which performs the function of a direct current generator or magneto (taco-generator) formed by the crown of permanent magnets (10), a coil (11) embedded between the poles of the magnet and a signal conditioner-amplifier (12). Subsequently, the speed signal obtained in the magnitude of electrical voltage is processed to obtain the spectrum of torsional vibration frequencies through the application of FFT algorithm This signal processing operation is performed by means of a suitable calculator. To avoid the dispersion of magnetic lines of force, the crown of permanent magnets goes assembled on a spindle reel of non-magnetic cutting material length (15), such that the magnetic field is not disturbed by the axis.

Claims (2)

1. Sensor de velocidad angular y vibraciones torsionales basado en imanes permanentes, caracterizado por estar constituido por una corona de dos anillos magnéticos polarizados axialmente, ubicados en una sección transversal del eje cuyas vibraciones torsionales se deben medir, el cual consta de:1. Angular velocity sensor and torsional vibrations based on permanent magnets, characterized by being a crown of two axially polarized magnetic rings, located in a cross section of the axis whose torsional vibrations must be measured, which consists of: (a) Un par de anillos (10) formados por imanes permanentes polarizados axialmente y ubicados sobre un carrete de material no magnético en un extremo del eje en rotación, entre los que se induce una fuerza electromotriz en una bobina intercalada entre los polos de ambos anillos como consecuencia de la rotación del eje con los anillos (10) respecto a la bobina (11).(a) A pair of rings (10) formed by magnets axially polarized permanent and located on a reel of non-magnetic material at one end of the rotating shaft, between that an electromotive force is induced in an interleaved coil between the poles of both rings as a result of the rotation of the shaft with the rings (10) with respect to the coil (11). (b) Una bobina (11) intercalada entre el par de anillos formados por imanes permanentes (10), en la cual se induce una fuerza electromotriz que es función de la velocidad instantánea de rotación del eje.(b) A coil (11) sandwiched between the pair of rings formed by permanent magnets (10), in which it is induced an electromotive force that is a function of instantaneous velocity of shaft rotation. 2. Sensor de velocidad angular y vibraciones torsionales basado en imanes permanentes, según reivindicación 1ª, caracterizado por utilizar la tensión inducida generada a consecuencia de la rotación del eje, para ser procesada y obtener las medidas de velocidad de rotación, la amplitud y frecuencia de las vibraciones torsionales.2. Angular velocity sensor and torsional vibrations based on permanent magnets, according to claim 1, characterized by using the induced voltage generated as a result of the rotation of the shaft, to be processed and obtain the measurements of rotation speed, amplitude and frequency of torsional vibrations
ES200800389A 2008-02-04 2008-02-04 ANGLE SPEED SENSOR AND TORSIONAL VIBRATIONS BASED ON PERMANENT MAGNETS. Active ES2343559B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES200800389A ES2343559B1 (en) 2008-02-04 2008-02-04 ANGLE SPEED SENSOR AND TORSIONAL VIBRATIONS BASED ON PERMANENT MAGNETS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200800389A ES2343559B1 (en) 2008-02-04 2008-02-04 ANGLE SPEED SENSOR AND TORSIONAL VIBRATIONS BASED ON PERMANENT MAGNETS.

Publications (2)

Publication Number Publication Date
ES2343559A1 true ES2343559A1 (en) 2010-08-03
ES2343559B1 ES2343559B1 (en) 2011-04-08

Family

ID=42340413

Family Applications (1)

Application Number Title Priority Date Filing Date
ES200800389A Active ES2343559B1 (en) 2008-02-04 2008-02-04 ANGLE SPEED SENSOR AND TORSIONAL VIBRATIONS BASED ON PERMANENT MAGNETS.

Country Status (1)

Country Link
ES (1) ES2343559B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4499420A (en) * 1981-03-05 1985-02-12 Sinano Denki Kabushiki Kaisha Disk type motor speed detecting device
GB2169712A (en) * 1985-01-11 1986-07-16 Gen Electric Method and apparatus to generate angular velocity signals by magnetic recording and playback
EP0710841A2 (en) * 1994-11-07 1996-05-08 Eaton Corporation Driveline vibration analyzer
EP1039277A1 (en) * 1999-03-22 2000-09-27 Meritor Heavy Vehicle Systems, LLC Torsional vibration monitoring system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4499420A (en) * 1981-03-05 1985-02-12 Sinano Denki Kabushiki Kaisha Disk type motor speed detecting device
GB2169712A (en) * 1985-01-11 1986-07-16 Gen Electric Method and apparatus to generate angular velocity signals by magnetic recording and playback
EP0710841A2 (en) * 1994-11-07 1996-05-08 Eaton Corporation Driveline vibration analyzer
EP1039277A1 (en) * 1999-03-22 2000-09-27 Meritor Heavy Vehicle Systems, LLC Torsional vibration monitoring system

Also Published As

Publication number Publication date
ES2343559B1 (en) 2011-04-08

Similar Documents

Publication Publication Date Title
CN101299048B (en) Rotating angular acceleration sensor
CN104034917B (en) A kind of axle sleeve type permanent magnetism rotating angular acceleration sensor
JP2012533058A5 (en)
ATE517350T1 (en) MEASURING DEVICE FOR MEASURING RELATIVE ROTATIONAL SPEEDS WITH WIRELESS SIGNAL TRANSMISSION
CN105634235A (en) Shaft sleeve generator capable of simultaneously measuring rotating angular speed and angular acceleration
ES2343559B1 (en) ANGLE SPEED SENSOR AND TORSIONAL VIBRATIONS BASED ON PERMANENT MAGNETS.
JP6235927B2 (en) Angular acceleration detector
CN105634234A (en) Brushless DC tachometer generator
JP2013205032A5 (en)
JP3083242B2 (en) Vibration evaluation method of rotating body in static field
US8384377B2 (en) Self-powered magnetic tachometer for supplying a signal representative of rotational rate and absolute position
CN105467150A (en) Portable power generator for measuring rotation angular velocity and angular acceleration simultaneously
US7024946B2 (en) Assembly for measuring movement of and a torque applied to a shaft
CN106030261B (en) Turbine engine components for measuring the vibration that rotating vane is born
CN104483510B (en) A kind of measuring method for measuring rotary acceleration sensors
RU2467464C1 (en) Instrument for measurement of spectrum of induction signal in magnetically linked system
JP7452971B2 (en) rotation detection device
CN203929801U (en) Axle sleeve type permanent magnetism rotating angular acceleration sensor
CN201237607Y (en) Electromagnetic rotating angular acceleration sensor
CN204330808U (en) A kind of measurement rotary acceleration sensors
JP2014193007A (en) Motor with temperature measurement function
CN203275092U (en) Sampling device for measuring torsional vibration of engine shafting
ES2930154T3 (en) Inductive Angle of Rotation Sensor
CN107389181B (en) A kind of torsional oscillation detection method and its sensor of application
JP2013170895A (en) Magnetostrictive torque detector

Legal Events

Date Code Title Description
EC2A Search report published

Date of ref document: 20100803

Kind code of ref document: A1

FG2A Definitive protection

Ref document number: 2343559

Country of ref document: ES

Kind code of ref document: B1

Effective date: 20110408