Abstract: The method of aligning an inertial unit having an axially symmetrical vibrating sensor that generates vibration comprises the step of establishing the vibration in a position for which the sensor presents variation in drift error that is the smallest relative to variation in drift error for other positions of the vibration.

Abstract: The method of calibrating a scale factor of an axially-symmetrical vibrating rate gyro operating by applying an amplitude control signal (CA) and a precession control signal (CP) to a vibrator member (1) set into vibration at a given frequency comprises a pre-calibration step consisting in calculating a reference gain ratio between a drive gain (Gmx) in a first direction and a drive gain (Gmy) in a second direction in modal quadrature with the first direction, and in storing the reference gain ratio, and a calibration step consisting in calculating a value for a measurable magnitude associated with the scale factor by a proportionality relationship including the reference gain ratio, and calculating a corrected scale factor on the basis of the value of the measurable magnitude and the stored reference gain ratio.

Abstract: The method of determining the speed of rotation of an axially symmetrical vibrating sensor of order 2. The method includes: performing a first evaluation of the speed of rotation while a vibration generated by the vibrating sensor lies in a first position relative to electrodes generating the vibration; applying a precession command so that the vibration comes successively into positions that are offset by 45°, 90°, and 135° relative to the first position; performing evaluations of the speed of rotation while the vibration lies in the offset positions; and taking a mean of the evaluations of the speed of rotation in the various positions of the vibration.

Abstract: The method of determining a speed of rotation of an axially symmetrical vibrating sensor having a vibrating member associated with control electrodes and with detection electrodes for generating vibration presenting an elastic line possessing periodicity of order n and having a position that is variable as a function of the rotation of the sensor, the method comprising the steps of: performing evaluation of the speed of successively for a predetermined number of positions of the vibration relative to the electrodes; the positions being geometrically offset relative to each other and the vibration being moved from one position to another by applying a precession command using a pre-established scale factor; determining a speed of rotation in function of the evaluations. The device for implementing such method.

Abstract: The method of determining the speed of rotation of an axially symmetrical vibrating sensor of order 2 comprises the steps of: performing a first evaluation of the speed of rotation while a vibration generated by the vibrating sensor lies in a first position relative to electrodes generating said vibration; applying a precession command so that the vibration comes successively into positions that are offset by 45°, 90°, and 135° relative to the first position; performing evaluations of the speed of rotation while the vibration lies in the offset positions; and taking a mean of the evaluations of the speed of rotation in the various positions of the vibration.

Abstract: The method serves to compensates anisotropy in an inertial rotation sensor comprising a metallized vibrating bell (1) having a bias voltage applied thereto, the vibrating bell (1) having an edge (7) electrodes (5.1, 5.2), and the method comprises the steps of measuring, preferably by multiplexing, the anisotropy between the electrodes and of applying to the electrodes a fraction of the bias voltage that depends on the differences measured between the electrodes.

Abstract: An optical signal processing device equipped with a source of electromagnetic radiation of variable intensity, a non-linear optical component, which comprises at least one photoluminescent carbon nanotube, and with a means of detecting electromagnetic radiation utilizes the non-linearity of the photoluminescence of carbon nanotubes for optical signal processing. The invention also relates to a non-linear optical component.

Abstract: The method serves to compensates anisotropy in an inertial rotation sensor comprising a metallized vibrating bell (1) having a bias voltage applied thereto, the vibrating bell (1) having an edge (7) electrodes (5.1, 5.2), and the method comprises the steps of measuring, preferably by multiplexing, the anisotropy between the electrodes and of applying to the electrodes a fraction of the bias voltage that depends on the differences measured between the electrodes.

Abstract: The invention relates to an apparatus (1) and a method (100) which form a universal identification means for a user party. The identification of the user can be made with respect to one of several second parties. The inventive apparatus consists of: a data input device (4, 5, 7, 8, 9, 11, 12, 13 and 15), a device for selecting the second party (4, 5, 7, 8, 9, 12, 13, 15) from a plurality of second parties in relation to which said user party can be identified, a data output device (2, 15) and a data processing device (14) comprising a storage device and an algorithm (60, 70) allowing to generate a variable identification code (10) which is specific to a given use by the user party and to disclose the code using the data output device (2, 15).

Abstract: The inertial rotation sensor comprises a body in which there are mounted sensing elements each comprising a bell-shaped resonator secured facing electrodes carried by an electrode-carrier stand, the body being made of a material having a coefficient of thermal expansion close to that of the electrode-carrier stand, and the electrode-carrier stand being secured directly on the body.