Abstract: A path is defined to be followed by a vehicle in an environment represented by a graph of nodes connected by edges. Each node represents the vehicle's position. Each edge between two nodes indicates a transition cost between the two nodes. An instance of the graph, which is represented by a start node, a destination node and mandatory nodes through which the vehicle must pass, is obtained. An initial order of travel through the mandatory nodes is obtained by applying a procedure, using a graph convolutional neural network, adapted to the graph, to the instance. A procedure of local optimisation of the mandatory nodes is executed in order to obtain an optimised order. A path for the instance is defined to be resolved: from the optimised order and for each pair of nodes of the instance to be resolved, from a shortest path between the nodes of the pair.

Abstract: A central communication unit (13), comprising: transmitter means arranged to transmit a single global downlink frame (17) addressed to all of the subscriber communication units, the global downlink frame comprising a plurality of data packets, each addressed to a respective one of the subscriber communication units, the global downlink frame supplying a common reference time so that, after receiving the global downlink frame (17), each subscriber communication unit can start transmitting an uplink frame (18) at the end of a waiting interval starting at the common reference time and having a duration equal to a respective waiting duration that is associated with said subscriber communication unit; and receiver means arranged to receive in succession the uplink frames (18) transmitted by each of the subscriber communication units.

Abstract: A configuration system (80) arranged to configure an aircraft in a single-pilot mode and a two-pilot mode, comprising: acquisition means (84) and authentication means (83) arranged to acquire and authenticate a configuration order that defines the selected mode and controls the configuration system (80) to configure the aircraft in the selected mode; first activation means (85) arranged to activate equipment dedicated to piloting by a single-pilot on board when the aircraft is configured in single-pilot mode, and to deactivate dedicated equipment when the aircraft is configured in two-pilot mode; verification means (87) arranged to, when the aircraft is configured in the single-pilot mode, verify that single-pilot flight conditions are met and inform the sole pilot on board and a ground station of the results of these checks.

Abstract: In the field of multi-rotor rotary-wing aircraft a propulsion system for such an aircraft includes a reconfigurable electric network for supplying the electric motors driving the rotors. The system includes: a supply source, a supply bus connected to the supply source, at least four drive units each including an electric motor and its control circuit, and an electrical ring network including: an electrical line which is interrupted at each drive unit and whose ends are connected to the supply bus, and, for each drive unit, a first switch and a second switch that are connected between the control circuit and the electrical line, on either side of the interruption.

Abstract: A method electrically insulates an electronic device including a housing having a first face provided with a first opening closed by a PCB and a second face provided with a second opening extending facing at least a portion of at least one connection interface in which at least one first connector is connected. The method includes the steps of forming a mold around the connection interface, and while the device is placed in a vacuum enclosure, pouring a liquid resin into the mold in order to form a layer of electrically insulating material between the connector and the connection interface. A device is obtained by performing the method.

Abstract: A method of controlling an electrical actuator of a mechanical system having a plurality of nested zones of contact, the method comprising the steps of: acquiring data about the mechanical system, which system includes a number of nested zones of contact; preparing a model of the system on the basis of said data and of a number of LuGre models put in parallel equal to the number of nested zones of contact, and determining parameters of the model and also a compensation structure for compensating friction in the nested zones of contact; including the compensation structure in a control relationship for the actuator A; and controlling the actuator by means of the control relationship.

Abstract: A modular exoskeleton structure provides force assistance to a user. The structure includes a base module including a lumbar belt capable of surrounding the waist of the user, a battery and a control unit attached to the lumber belt, a first attachment part attached to the belt and capable of cooperating with a second complementary attachment part of a hip module to attach the hip module to the base module by snapping the second attachment part into the first attachment part, and a third attachment part attached to the belt and capable of cooperating with a complementary fourth attachment part of a back module for attaching the back module to the base module.

Abstract: An electronic circuit board includes a printed circuit board and first and second electronic components. The printed circuit board includes a first insulating layer, a second insulating layer attached to the first insulating layer and in which is formed an open cavity, and a second conductive layer attached to the second insulating layer. The second conductive layer is treated to form a surface solder pad. The first electronic component is housed in the open cavity of the second insulating layer. The second electronic component is placed on the second insulating layer without overlapping with the open cavity. The first electronic component and the second electronic component each include a termination soldered on the surface solder pad, the surface solder pad being shared by the first and second electronic components.

Abstract: An optically transparent electromagnetic shielding assembly exhibiting a shielding efficiency that is increased when a conducting or polarizable fluid produces a low electrical impedance value between a periphery and a central region of a window. Such shielding assembly is useful in detection systems that are exposed to varying intensities of electromagnetic radiation, such as microwave radiation.

Abstract: The invention relates to a method of diagnosing the state of wear of an actuator including at least one electric motor. The method comprises the following steps: recording a signal coming from the motor during activation and deactivation of the actuator, the signal including a first maximum during activation and a second maximum during deactivation; executing a windowing algorithm on the signal in order to obtain a standardized dataset including the first and second maximums; using at least one classification method for classifying into at least two classes in order to establish a score for the dataset in each of the classes of the classification method; and evaluating the state of wear of the actuator from the scores of the dataset.

Abstract: A measurement device for measuring an angular position of a movable body that is rotatable about an axis of rotation relative to a stationary body, the device comprising, facing each other, a movable portion with a first printed circuit having first tracks formed thereon defining a plurality of target patterns and a stationary portion with a second printed circuit having second tracks formed thereon defining a plurality of measurement patterns that are angularly distributed in regular manner. The target patterns are angularly distributed in irregular manner, the number of target patterns is not less than two, and the product of the number of target patterns multiplied by the number of measurement patterns is not less than twelve.

Abstract: A multispectral harmonisation device intended to align the optical channels of an optronic system that includes at least two directional optical sources emitting respective optical beams of various wavelengths belonging to various spectral bands and comprises a parabolic mirror and means for positioning and orienting each of the optical sources so that each of the optical beams emitted by the optical sources passes through the optical focus of the parabolic mirror before being reflected by said parabolic mirror so that all the optical beams form, by reflection on the parabolic mirror, a multispectral collimated beam.

Abstract: A device intended to be positioned close to a joint between two parts, the device including a first interface carried by a first of the two parts and a second interface carried by a second of the two parts, the device including at least one connection between the first interface and the second interface. The connection includes two cylinders mounted in parallel so that each cylinder is connected by its output rod to the first interface and by its body to the second interface, the simultaneous displacement of the two output rods allowing, when in use, movement of the second part of the joint relative to the first part of the joint. A general system including the device as well as a fluid-supply unit for said device are also provided.

Abstract: An aircraft seat includes an actuator and a movement transmission device. The transmission device includes a frame provided with an immobilizing portion and a drive shaft. The transmission device further includes a gear wheel provided with coupling teeth having inclined side walls and a sleeve with an immobilizing portion complementary to the immobilizing portion of the frame, and coupling teeth having inclined side walls. The transmission device also has an elastic member configured to push the sleeve. The stiffness of the elastic member and the inclination of the side walls of the coupling teeth of the gear wheel and sleeve are chosen such that, when a torque greater than a threshold torque is applied to the gear wheel, the sleeve slides on the drive shaft from a position of coupling the sleeve to the gear wheel to a position of immobilizing the sleeve relative to the frame.

Abstract: An electronic card comprising: a first card portion including lightning protection components, a first ground plane and a first ground zone; a second card portion comprising functional components, a second ground plane and a second ground zone; a third card portion, which separates and electrically isolates the first ground plane and the first ground zone from the second ground plane and from the second ground zone; the first ground zone and the second ground zone being unvarnished; the first ground zone and the second ground zone being arranged in order to be applied onto a housing element that is electrically conductive and that belongs to a housing in which the electronic card is integrated.

Abstract: A tactile interface including a touch pad and a support, the touch pad being hingedly attached to the support between the extended active position and a retracted inactive position, in which the pad is folded back towards the support wherein the support constitutes a drawer which is movable in a casing between a pulled-out position in which the interface is in the active position and an inserted position in which the interface is in the retracted position.

Abstract: A multispectral harmonisation device intended to align the optical channels of an optronic system that includes at least two directional optical sources emitting respective optical beams of various wavelengths belonging to various spectral bands and comprises a parabolic mirror and means for positioning and orienting each of the optical sources so that each of the optical beams emitted by the optical sources passes through the optical focus of the parabolic mirror before being reflected by said parabolic mirror so that all the optical beams form, by reflection on the parabolic mirror, a multispectral collimated beam.

Abstract: The invention relates to a method for processing a radionavigation signal generated by a satellite (SAT), said method comprising the following steps implemented in a processing unit of a radionavigation receiver: converting (102) the radionavigation signal into the frequency domain by means of a complex Fourier transform so as to obtain a frequency-domain radionavigation signal comprising a real part I and an imaginary part Q, the real part I having an amplitude I2 associated with one frequency; determining (103) a distribution law of the amplitude I2 of the real component I of the frequency-domain radionavigation signal; determining (104) an amplitude of the real component for which the distribution function is zero, said amplitude defining a threshold; processing (105) the frequency-domain radionavigation signal so as to filter components the amplitude of which is higher than the determined threshold.

Abstract: A device for generating a gas by putting a liquid into contact with a catalyst includes an enclosure defining a first chamber for containing the liquid and a second chamber for containing the catalyst. A valve member is mounted to move inside the enclosure between a closed position in which the first chamber and the second chamber are isolated from each other and an open position in which the first chamber and the second chamber are in fluid-flow communication. Accordingly, the valve member is connected to an elastically-deformable diaphragm forming a wall of the enclosure. The diaphragm is coupled to an actuator arranged outside the enclosure to deform said diaphragm in such a manner as to move the valve member between the closed position and the open position.

Abstract: A connection system for exchanging electrical signals, includes a first symmetrical connector, and a second symmetrical connector. Each symmetrical connector has at least one magnetic core provided with at least one turn. The symmetrical connectors are produced in a substrate made of insulating material so as to form a half of a coupling transformer At least one half of the coupling transformer of each connector is arranged opposite one another so as to be able to exchange a magnetic flux. The electrical signals are emitted by the first connector in the form of a magnetic flux, and the second connector generates the electrical signals on receiving the magnetic flux.