Abstract: Flow valve comprising a casing (1) containing an electromagnetic assembly (2) for detecting a magnetic field, the electromagnetic assembly being fixed to a pendulum (3) suspended by an articulation (6) from a wall (5) of the casing, the casing containing a liquid for damping the movements of the pendulum, characterized in that the pendulum comprises opposite the articulation a surface (8) which has a spherical cap shape and which extends facing a wall (4) of the casing of complementary shape, defining a space having, dimensions suitable for producing a laminar rolling of the damping liquid between them, when the pendulum is in motion.

Abstract: The invention relates to a method for updating and/or for initializing, in a system comprising an image sensor oriented towards the horizon such as a pair of binoculars coupled to a geographical north seeker incorporating a gyrometer, a value representative of the orientation of the image sensor with respect to north, in which the shift of two images arising from the digital image sensor is determined at a first instant and at a second instant that are distinct so as to construct an item of information representative of an angular movement, and in which this angular movement information is utilized to: update the value of orientation of the image sensor;—and/or to discriminate the movements of the image sensor with respect to the ground from the movements of the image sensor that are due to the rotation of the earth, in a process for initializing the value of orientation of the image sensor using a north seeker of gyroscopic or gyrometric type rigidly tied to the image sensor.

Abstract: The invention relates according to a first aspect to a hybridization device (1) comprising a virtual platform (2) calculating inertial measurements (PPVI), a bank (3) of Kalman filters each formulating a hybrid navigation solution on the basis of the inertial measurements of the virtual platform (2) and of measurements of signals emitted by a constellation of satellites, which measurements are delivered by a satellite positioning system (GNSS), characterized in that it comprises, for each filter of the bank, a module for correcting the satellite measurements (4) delivering to the filter the measurements of the satellite positioning system (GNSS) which are used by the filter after correction with the aid of the hybrid navigation solution formulated by the filter.

Abstract: The invention relates to a plane detector for a gamma ray burst imager, the detector comprising a multilayer ceramic interconnection circuit between external connectors and a processor circuit fastened on a rear face of the circuit and a detection module fastened on a front face of the circuit. The detection module includes a support having a rear face fastened to the circuit and a front face on which sensors are fastened, and a high voltage electrical connection device having a through portion passing through the support and extending between two adjacent sensors in order to connect a connection pad of the circuit to a conductive grid that extends at least in part between the sensors and that is electrically connected to a free face of each sensor.

Abstract: A snubber circuit for a chopper circuit has at least one chopper transistor with terminals connected to a first line and to a second line, the first line being at a power supply potential and the second line being at ground potential. The snubber circuit has a capacitive element and a charging diode for charging the capacitive element. The charging diode and the capacitive element are connected in series to each other and together they are connected in parallel with the chopper transistor. The snubber circuit has an inductive element having a first end connected to a connection point situated between the charging diode and the capacitive element, and a second end connected to one of the lines.

Abstract: A method of coding a secret, a numerical value d, subdivided into a number N of secret elements [di]n1, a composition law () applied to the elements di giving the value d. The following are calculated: (A) a first image (TN) of the secret by iterative calculation and application of the law () between the first image Ti-1 of rank i?1 and of the product according to this law of the element (di) of next rank and of a random value (Ri) of a first set, (B) a first numerical value (S1) by application of the law () to the N random values (Ri), (C) a second numerical value (S2) by application of the law to the N?1 random values (Aj) of a second set, (D) a second image T? of the secret by application of the inverse law () to the first image (TN) and to the second numerical value (S2) so as to generate an intermediate image (Tx) and then application of the inverse law to the intermediate image (Tx) and to the second numerical value (S2).

Abstract: An actuator device for actuating equipment has an electric motor arranged to be connected to an autopilot device and connected by a drivetrain to an outlet shaft, itself designed to be connected to a control instrument, the drivetrain incorporating stepdown gearing dividing the drivetrain into a high-speed segment beside the motor and a low-speed segment beside the outlet shaft. The high-speed segment comprising a deactivator member for deactivating the autopilot device. The deactivator member having a first element secured to a first portion of the high-speed segment; a second element secured to a second portion of the high-speed segment and connected to the first element to allow the first element to be angularly offset relative to the second element when a torque for transmission reaches a predetermined threshold; and a detector member for detecting the angular offset.

Abstract: A method of manufacturing a display device, in particular a security document, includes providing m images of an object, wherein m is at least equal to 2, dividing each image into n sets adjacent arrays (l1,1, l1,2 . . . l1,n), . . . , (lm1, lm2, . . . lmn) of picture elements, spaced at a mutual distance ?, applying the images in an interlaced manner on an image layer in sets of interlaced arrays (l11, l21 . . . lm1), . . . , (l1n, l2n . . . lmn) below a lens structure having line-shaped lens elements over the image layer with one line shaped lens element overlying a corresponding set of adjacent arrays, wherein upon applying the arrays onto the image layer, and/or upon providing the lens elements, each array of picture elements is provided onto the image layer in an out of focus manner to form a blurred array or each array is imaged by the lens elements to form a blurred array, wherein a mutual distance of the edges of adjacent blurred arrays is smaller than the mutual distance ?.

Abstract: A module converting voltage between a high-voltage electrical network and at least one energy storage element an aircraft, the conversion module configured to reversibly convert between a DC voltage of the high-voltage electrical network and a DC voltage of the energy storage element, the DC voltage of the energy storage element floating relative to the DC voltage of the high-voltage electrical network and centered relative to the mass of the aircraft, the module including an input module including two filters each capable of receiving a DC voltage, a first arm and a second arm including switches, and a mechanism controlling the switches, operating per cycle of a switching period and capable of controlling at least one first switch and at least one second switch identically but offset by a half-period, whereby the first switch is open when the second switch is closed and vice versa.

Abstract: The invention relates to a vibrating gyroscope (1), characterised in that it comprises a base (2), a resonator (3) comprising a body (4) of generally cylindrical shape terminating in a distal face (5), to the side opposite the base (2), said face (5) comprising at least one through hole (13), a plurality of piezoelectric elements (10) placed in contact with the resonator (3), vibration control and processing modules (18) arranged at least in part on the base (2), and at least one electrical connection (15) passing through the body (4) of the resonator (3) via said hole (13), and electrically connecting said modules (18) of the base (2) and the plurality of piezoelectric elements (10) for controlling and measuring the vibration of the resonator (3).

Abstract: According to a first aspect the invention relates to a device forming a central controller (C) intended to be linked to a remote peripheral (P1-PN) by way an electrical power line (L), comprising a power transmitter (1) and a low-pass litter (CC—BF) arranged between the power transmitter and the electrical line, as well as means for transmitting/receiving data (3) in baseband and a high-pass filter (CC—HF) arranged between the data transmission/reception means and the electrical line, the electrical line being of the kind mutualized for the transmission of power at low frequency from the central controller to the remote peripheral and for the simultaneous bidirectional transmission of data in baseband at high frequency between the central controller and the remote peripheral.

Abstract: This invention relates, according to a first aspect, to electronic equipment comprising a processor (2), a memory (11) and a communication module (3) ensuring an interface with an avionics data network. The communication module (3) and the processor (2) are embedded within a microcontroller (1) so that the memory (11) is shared between the processor and the communication module. The electronic equipment also includes a module for monitoring the accesses to the memory (17) which are configured so as to detect an access of the communication module (3) into an unauthorized address area (12) of the memory (11). According to a second aspect, the invention relates to a method of making a processor secure against the failures of a complex peripheral.

Abstract: The actuator is of the roto-linear type and comprises a sleeve, a clevis and an operating rod which transmits the load. An electromagnetic sensor that measures and controls the load is placed inside the actuator, at the shoulder of the clevis. This sensor is associated with measurement means for processing the signals from the said winding, which winding are torus-shaped and arranged inside a field frame which is magnetically closed by an armature.

Abstract: A device (1) for generating a return force for a control stick (2) that is movable from a neutral position along a travel path (3), the device comprising mechanical connection means (5) for connecting the stick (2) to resilient return means (4) for returning the stick (2) towards the neutral position, the device being characterized in that the mechanical connection means (5) and the resilient return means (4) are arranged to produce, over a first portion (3a) of the travel path, a first strength of return force (F) and, over a second portion (3b) of the travel path, a second strength of return force (F), and in that the mechanical connection means (5) include a transmission part (6) adapted firstly to be mechanically connected to said stick (2) in such a manner that any movement of said stick (2) along the second portion (3b) of the travel path corresponds to turning movement of the transmission part (6), and secondly to transmit the return force (F) to said stick (2) at least when the stick (2) is positioned

Abstract: An electronics card comprising a stack of printed circuit layers, each comprising an electrically insulating support having at least one conductive track extending thereon, and two electromagnetic shields extending respectively over a top face and over a bottom face of the stack, each shield comprising a grid and a plate that are superposed and electrically conductive, each extending over an electrically insulating support, and the conductive tracks being obtained by solid copper type etching. The invention also provides a device including such a card, and a method of protecting such a card of such a device against a lightning strike and against electromagnetic radiation.

Abstract: In a gyroscopic system, a vibrating gyroscope is controlled in gyrometer mode in a control loop. The control loop corresponds to at least one current control for an operating parameter. In the control loop, a modified control to be applied to the gyrometer for said operating parameter is obtained (11) by introducing a sinusoidal interference into the current control. Then, the modified control is applied (12) to the gyrometer as the current control. A resulting measurement value (13) is determined. A sinusoidal interference (14) is calculated as a function of said measurement value. Lastly, on the basis of the measurement value, it is decided (15) whether to repeat the previous steps on the basis of the sinusoidal interference last determined.

Abstract: The invention provides a motor-driven movement system for moving a movable element, the system comprising at least two actuators, each provided with means connecting it to the movable element and each dimensioned to be capable, on its own, of driving the movable element, a central control unit being connected to the two actuators in order to be capable of sending a position setpoint (Pos1, Pos2) to one or other of the actuators. According to the invention, the system further comprises control means for simultaneously controlling both actuators in terms of force in response to the position setpoint sent to one of the actuators. The invention also provides a method of driving such a system and a method of testing such a system.

Abstract: A method of detecting a failure of an alternator supplying three-phase electricity to a load, the method comprising the steps of determining a duty ratio for each of the phases at the output of the alternator, determining phase differences between the phases at the output of the alternator; and determining the presence of a failure as a function of the phase differences and as a function of a comparison of the duty ratios. A power supply device is also provided for implementing the method.

Abstract: A resonator for an angular parameter sensor, the resonator comprising a bell of electrically-insulating material provided with a central stem and an electrically-conductive layer, the conductive layer comprising branches extending from a central portion of the bell to a peripheral edge of the bell, the number of said branches being a prime number not less than seven.

Abstract: The invention concerns an opto-electronic device for observing and/or aiming at a scene comprising a target (C), comprising an observation module (1) comprising an image sensor (10) and a stabiliser (11) for a line of sight (100) towards the target (C); and a telemeter (2) comprising a multi-shot pulsed laser (20) for emitting a plurality of outward laser pulses (An) in the direction of the target (C) to be telemetered, and a detector (21) for a plurality of return laser echoes (Rn) reflected by the scene in order to generate an electrical signal for each return laser echo (Rn) in order to effect a measurement of the distance to the target (C), each return laser echo (Rn) corresponding to an outward laser pulse (An); characterised in that it also comprises a sensor (3) of angular movement of the device with respect to the stabilised line of sight (100) in order to determine an angular radius (?n) of each outward laser pulse (An) with respect to the stabilised line of sight (100); and a selector (4)