TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A composite hologram in which a separate hologram is recorded for each input with the reference wave at a new angle of incidence.  2, record 1, English, - frequency%20multiplexed%20hologram

Record 1,  Textual support,  French

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

A relatively new technology is the electronically controlled "active differential. "An electronic control unit(ECU) uses inputs from multiple sensors including yaw rate, steering input angle, and lateral acceleration, and adjusts the distribution of torque to compensate for undesirable handling behaviours like understeer.  1, record 2, English, - active%20differential

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

Différentiel actif. Piloté par l’électronique, ce type de différentiel envoie la puissance sur les roues disposant de la meilleure adhérence. Sur certains modèles [de voitures], il est aussi capable d’accélérer la roue arrière extérieure au virage. Il est ainsi possible d’éviter le sous-virage pour améliorer l’agilité et retarder l’action de l'antidérapage.  1, record 2, French, - diff%C3%A9rentiel%20actif

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

[The] operation of an active device which is biased almost to output-current cut-off so that current flows only during one half of each cycle of sinusoidal input signal, i. e. the angle of flow is 180°.  3, record 3, English, - class%2DB%20operation

Record number: 3, Textual support number: 1 OBS

[The class-B] mode of operation ... is very efficient because the mean current of the active device is directly proportional to the signal amplitude and is almost zero for zero input signal. The output signal is ... a reproduction of only one half of each cycle of input signal but linear amplification is possible by using two class-B stages in push-pull operation and most of the output stages in transistor amplifiers and receivers are of this type.  3, record 3, English, - class%2DB%20operation

Record number: 3, Textual support number: 2 OBS

The theoretical efficiency of a class-B stage (measured by the ratio of the output power to the power taken from the supply) is 78% and efficiencies approaching this value can be obtained in practice.  3, record 3, English, - class%2DB%20operation

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

L'amplification d'un signal à enveloppe variable par un TEC [transistor à effet de champ] fonctionnant en classe A résultent de faibles performances en rendement. Le fonctionnement en classe B permet une forte amélioration du rendement mais au détriment d'une réduction du gain en puissance. La classe A permet de conserver le gain de la classe A en permettant d'atteindre un niveau de rendement pratiquement égal à celui obtenu en classe B.  2, record 3, French, - fonctionnement%20en%20classe%20B

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

[The] operation of an active device in which the bias and signal amplitude are so chosen that output current flows throughout each cycle of input signal(assumed sinusoidal), i. e. the angle of flow is 360°.  3, record 4, English, - class%2DA%20operation

Record number: 4, Textual support number: 1 CONT

Class-A operation. Class-A amplifier operation is characterized by a conduction period of the output current (collector or drain) of 360°. That is, the operating point is chosen to have a constant voltage and current. In effect, the amplifier power is on all the time. This is referred to as linear operation. By operating in the linear region of the transistor’s characteristics, the amplified signal suffers minimum distortion. This comes at a price of inefficiency in the amplifier. The theoretical maximum possible efficiency of a class-A amplifier is 50%, but due to linearity requirements of the applications, the efficiency may be no more that 25%.  4, record 4, English, - class%2DA%20operation

Record 4,  Textual support,  French

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 DEF

[The] operation of an active device which is biased beyond cut-off of output current so that current flows for less than one half-cycle of sinusoidal input signal, i. e. the angle of flow is less than 180°.  3, record 5, English, - class%2DC%20operation

Record number: 5, Textual support number: 1 OBS

[The class-C] mode of operation ... cannot be used for linear amplification but is extensively used for RF amplification, e.g. in transmitters where a tuned output-load circuit rejects harmonics and gives a sinsoidal output signal. Efficiency (measured by the ratio of the output power to the power taken from the supply) can be very high indeed - approaching 90%.  3, record 5, English, - class%2DC%20operation

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

Dans un fonctionnement en classe C, la forme impulsionnelle du courant de sortie permet de maximiser le rendement de collecteur ou de drain du transistor. Malheureusement, la chute du gain en puissance est très significative par rapport aux fonctionnements en classe AB ou B. Ceci nuit fortement aux performances en rendement en puissance ajoutée qui sera plus faible qu'en classe B.  2, record 5, French, - fonctionnement%20en%20classe%20C

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

A variation of the CVT [continuously variable transmission] is the IVT or toroidal transmission, where a pair of rollers rotate between an input and an output disc. Modifying the angle of the rollers changes the gear ratio. This transmission system is capable of handling higher torque while providing greater driving comfort and faster gear ratio changes. However, it is limited by disadvantages such as increased cost, installation space, and weight. However, Getrag is already working on IVTs for BMW.  1, record 6, English, - infinitely%20variable%20transmission

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 OBS

Les compagnies Fendt, ZF, Claas, Steyr (Case IH) et John Deere se sont lancées dans le développement et la commercialisation de transmissions qui offrent une variation de vitesse infinie entre 0 et la vitesse maximum. Peu importe le manufacturier, le secret de ce concept réside dans l'utilisation simultanée d'un système pompe-moteur hydrostatique et d'un train planétaire. [...] [Le rôle du train planétaire] est de combiner la puissance du moteur à celle de l'hydrostatique et de l'acheminer aux roues. La vitesse dépend de la contribution de l'hydrostatique.  1, record 6, French, - transmission%20%C3%A0%20variation%20infinie

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

V-bar : Flight Director Indicator... The V-bar command indicator is a pair of yellow, wedge-shaped V-bars that move up or down to command a climb or descent, and roll left or right to command a bank. The flight director system commands the V-bars to capture and track the selected heading or radio signals; or to maintain a desired pitch angle, glidepath, or an optimum speed during SC(speed command) operation. To satisfy the commands, the aircraft is maneuvered so that the airplane symbol is flown into the V-bars until the two are aligned. Input signals to the V-bars depend upon the mode of operation. The V-bars are biased from view by the instrument failure warning system; when loss of signal occurs, or sensing circuits fail that are associated with the selected mode of operation. They are also out of view when the mode selector control is in the OFF position.  3, record 7, English, - tendency%20bar

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 CONT

L'indicateur HZ-4 [horizon directeur de vol] assume deux fonctions. Il réalise la combinaison d'un horizon artificiel et d'un indicateur de tendances du type "zero reader". [...] Les deux barres, verticales et horizontale, sont les barres de tendance liées au calculateur de vol. La barre verticale reçoit les informations du canal de direction, la barre horizontale celles fournies par le canal de profondeur.  3, record 7, French, - barre%20de%20tendance

Record number: 7, Textual support number: 2 CONT

[...], dès que l'avion ne sera plus dans la situation requise, les 2 barres ou repères, appelés BARRES ou REPÈRES DE TENDANCES ne seront plus dans une position médiane vis à vis du cadran de l'indicateur.  2, record 7, French, - barre%20de%20tendance

Record number: 7, Textual support number: 1 OBS

barre de tendance : terme accepté par le Comité d'étude de la terminologie des cartes de travail du DC-9.  4, record 7, French, - barre%20de%20tendance

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 DEF

[Of a gyro or accelerometer] the product of the inertial-sensing mass and the distance from the center of mass to the center of support measured along the pendulous axis.  2, record 8, English, - pendulosity

Record number: 8, Textual support number: 1 CONT

pendulous integrating gyroscopic accelerometer : A linear accelerometer using a single-degree-of-freedom gyro having a pendulosity along the spin axis that is servo-driven about the input axis at a rate that balances the torque induced by sensed acceleration along the input axis. The angle through which the servoed axis rotates is proportional to the integral of the sensed acceleration.  2, record 8, English, - pendulosity

Record 8,  Textual support,  French

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

A linear accelerometer using a single-degree-of-freedom gyro having a pendulosity along the spin axis that is servo-driven about the input axis at a rate that balances the torque induced by sensed acceleration along the input axis. The angle through which the servoed axis rotates is proportional to the integral of the sensed acceleration.  3, record 9, English, - pendulous%20integrating%20gyroscopic%20accelerometer

Record number: 9, Textual support number: 1 CONT

The intercontinental ballistic missiles (ICBM) and submarine-launched ballistic missiles (SLBM) developed over the past 50 years have employed successive generations of increasingly accurate inertial guidance systems. The comparatively short time of guided flight and high acceleration levels characteristic of the ballistic missile application place a premium on accelerometer performance to achieve desired weapon system accuracy. To date, the accelerometer design of choice for strategic missiles has been the Pendulous Integrating Gyroscopic Accelerometer (PIGA) instrument, an accelerometer whose origins trace back to the German V2 rocket, and has been refined through several generations of development to achieve unsurpassed performance.  4, record 9, English, - pendulous%20integrating%20gyroscopic%20accelerometer

Record 9,  Textual support,  French

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 DEF

The angle between an input axis and its associated input reference axis when the device is at null condition.  1, record 10, English, - input%2Daxis%20misalignment

Record number: 10, Textual support number: 1 CONT

Typically, the gyroscope model will consist of the following error sources: (1) Anisoinertia, (2) Angular quantization, (3) Bias, (4) Exponentially correlated random drift, (5) G and G-squared coefficients, (6) Input axis misalignment, (7) scale factor error, and (8) Turn-on transient.  3, record 10, English, - input%2Daxis%20misalignment

Record 10,  Textual support,  French

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 DEF

The drift rate in a single-degree-of-freedom gyro resulting from coherent oscillatory rates about the spin reference axis (SRA) and output reference axis (ORA).  2, record 11, English, - spin%2Doutput%2Drectification%20drift%20rate

Record number: 11, Textual support number: 1 OBS

It occurs only when gyro and loop dynamics allow the float motion to lag case motion when subjected to a rate about the output reference axis, resulting in a cross coupling of the spin reference axis rate. This drift rate is a function of the input rate amplitudes and the phase angle between them.  2, record 11, English, - spin%2Doutput%2Drectification%20drift%20rate

Record 11,  Textual support,  French

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 DEF

The drift rate in a single-degree-of-freedom gyro resulting from coherent oscillatory rates about the spin reference axis (SRA) and input reference axis (IRA).  2, record 12, English, - spin%2Dinput%2Drectification%20drift%20rate

Record number: 12, Textual support number: 1 OBS

It occurs only when gyro and loop dynamics allow the gimbal to move away from null in response to the rate about the input reference axis, resulting in a cross coupling of the spin reference axis rate. This drift rate is a function of the input rate amplitudes and the phase angle between them.  2, record 12, English, - spin%2Dinput%2Drectification%20drift%20rate

Record 12,  Textual support,  French

Record 12,  Textual support,  Spanish

Record 13,  Textual support,  English

Record number: 13, Textual support number: 1 DEF

The ratio of the output angle of the gimbal to the input angle of a rate-integrating gyro at zero frequency. It is numerically equal to the ratio of the rotor angular momentum to the damping coefficient.  2, record 13, English, - gyro%20gain

Record 13,  Textual support,  French

Record number: 13, Textual support number: 1 CONT

La radiocommande [...] Cinq fonctions sont pilotées par l'hélicoptère. [...] D'autres fonctions peuvent être employées comme le réglage par la radio du gain du gyroscope, c'est-à-dire sa sensibilité, sa faculté à compenser une dérive de l'anti-couple; un train rentrant dans le cas d'une maquette, une sélection de régime rotor dans le cas d'un régulateur de régime sur l'appareil.  3, record 13, French, - gain%20gyroscopique

Record number: 13, Textual support number: 1 PHR

Réglage du gain du gyroscope.  4, record 13, French, - gain%20gyroscopique

Record 13,  Textual support,  Spanish

Record 14,  Textual support,  English

Record number: 14, Textual support number: 1 DEF

The angular displacement of the [gyroscope] case about an input axis.  2, record 14, English, - input%20angle

Record 14,  Textual support,  French

Record 14,  Textual support,  Spanish

Record 15,  Textual support,  English

Record number: 15, Textual support number: 1 CONT

In gyroscopes, degrees of freedom refer to the restraints imposed upon the gyroscope wheel spin axis. Any rotation about the input axis will result in a precession of the gyroscope wheel. Thus, a voltage from the gyroscope pickoff will cause the wheel-gimbal stabilizing motor to drive and return the gyroscope wheel to its zero precession angle.  1, record 15, English, - zero%20precession%20angle

Record 15,  Textual support,  French

Record number: 15, Textual support number: 1 OBS

- L'angle de «précession» [delta phi] dont le plan (Q,P) tourne autour de Q ne dépend pas de l'angle [phi] initial. De plus : - Si [tau] est réel [delta phi] est nul. La polarisation reste dans le plan (Q,P) initial.  2, record 15, French, - angle%20de%20pr%C3%A9cession%20nul

Record 15,  Textual support,  Spanish

Record 16,  Textual support,  English

Record number: 16, Textual support number: 1 CONT

In gyroscopes, degrees of freedom refer to the restraints imposed upon the gyroscope wheel spin axis. Any rotation about the input axis will result in a precession of the gyroscope wheel. Thus, a voltage from the gyroscope pickoff will cause the wheel-gimbal stabilizing motor to drive and return the gyroscope wheel to its zero precession angle.  1, record 16, English, - precession%20of%20the%20gyroscope%20wheel

Record 16,  Textual support,  French

Record number: 16, Textual support number: 1 OBS

La toupie gyroscopique est entraînée à vitesse constante. Le moteur de précession qui est dans le plan de symétrie du berceau est commandé pour produire une vitesse de basculement de la toupie.  2, record 16, French, - pr%C3%A9cession%20de%20la%20toupie%20gyroscopique

Record number: 16, Textual support number: 2 OBS

[...] une toupie est constituée d'une roue dont la position est réglable sur l'axe de rotation propre. Le point d'appui peut être situé plus bas ou plus haut que le centre de masse. On vérifie que l'argument heuristique ci-dessus suffit à prédire le sens de précession de la toupie.  3, record 16, French, - pr%C3%A9cession%20de%20la%20toupie%20gyroscopique

Record 16,  Textual support,  Spanish

Record 17,  Textual support,  English

Record number: 17, Textual support number: 1 DEF

A synchro or other device whose input is the angular position of an object, such as the rotor of an electric machine, and whose output is electric signals, usually proportional to the sine and cosine of an angle, and often in digital form; used to interchange rectangular and polar coordinates, and in servomecanisms to report the orientation of controlled objects.  2, record 17, English, - resolver

Record 17,  Textual support,  French

Record number: 17, Textual support number: 1 DEF

Capteur électrique de position angulaire, composé d'un stator et d'un rotor, et fournissant un signal électrique continu ou alternatif caractéristique de la position angulaire du rotor.  2, record 17, French, - r%C3%A9solver

Record number: 17, Textual support number: 1 OBS

Ces appareils, d'aspect analogue à celui des synchromachines, transforment un mouvement angulaire en un système de deux tensions proportionnelles au sinus et au cosinus de l'angle d'entrée.  3, record 17, French, - r%C3%A9solver

Record number: 17, Textual support number: 2 OBS

Le terme «résolver» figure à la section E-2428-5.  4, record 17, French, - r%C3%A9solver

Record 17,  Textual support,  Spanish

Record 18,  Textual support,  English

Record number: 18, Textual support number: 1 DEF

This is a measure of the instantaneous time by which the sinusoidal output follows the sinusoidal input signal at a specified frequency. This is usually expressed in degrees as the vector angle between input and output.  1, record 18, English, - phase%20lag

Record 18,  Textual support,  French

Record number: 18, Textual support number: 1 DEF

Mesure de l'intervalle de temps compris entre la grandeur de sortie sinusoidale et le signal d'entrée sinusoïdal à une certaine fréquence. C'est l'angle compris entre les grandeurs d'entrée et de sortie en représentation vectorielle.  1, record 18, French, - d%C3%A9phasage

Record 18,  Textual support,  Spanish

Record 19,  Textual support,  English

Record number: 19, Textual support number: 1 DEF

The phase angle between the transducer output and input for sinusoidal excitation.  1, record 19, English, - transducer%20phase%20shift

Record 19,  Textual support,  French

Record number: 19, Textual support number: 1 DEF

Différence entre les phases de signaux de sortie et d'entrée pour une excitation sinusoïdale.  1, record 19, French, - d%C3%A9phasage%20du%20capteur

Record 19,  Textual support,  Spanish