Abstract: A method for driving an assistance-providing motor of a power-steering system of a vehicle, the assistance-providing motor including a first winding electrically energized by a first inverter, and at least a three-phase second winding electrically energized by a second inverter different from the first inverter, the first winding and the at least a second winding being mechanically coupled to each other, characterized in that it includes, when a malfunction of short-circuit type is detected between a phase of the first winding and a supply or an electric ground of the first inverter: —a determining step; —a measuring step; —a tripping step; —a controlling step.

Abstract: A multilayer printed circuit having a control circuit including n vias that are connected in series between a first and a second electrical terminal so that an applied electric current passes at least partially through each one of the n vias. The control circuit includes track portions in each one of the layers, each one of the n vias connecting a track portion of one layer to a track portion of another layer. The control circuit includes a measurement device for measuring a potential difference across its terminals, storage for storing a threshold value and a comparator for comparing the potential difference with the threshold value so as to validate the printed circuit when the potential difference is lower than the threshold value.

Abstract: An angular position sensor for sensing the angular position of a rotor rotating on an axis relative to a stator, including a ferromagnetic target, of substantially ovoid cross section, rotating together with one from among the rotor or the stator, and a sensitive element including a first set of coils that are angularly evenly distributed, rotating together with the other from among the rotor or the stator, the coils being axially arranged in line with the target in order to be able to measure a distance from the target so as to deduce therefrom an angular position of the rotor relative to the stator.

Abstract: A multilayer printed circuit having a control circuit including n vias that are connected in series between a first and a second electrical terminal so that an applied electric current passes at least partially through each one of the n vias. The control circuit includes track portions in each one of the layers, each one of the n vias connecting a track portion of one layer to a track portion of another layer. The control circuit includes a measurement device for measuring a potential difference across its terminals, storage for storing a threshold value and a comparator for comparing the potential difference with the threshold value so as to validate the printed circuit when the potential difference is lower than the threshold value.

Abstract: An angular position sensor for sensing the angular position of a rotor rotating on an axis relative to a stator, including a ferromagnetic target, of substantially ovoid cross section, rotating together with one from among the rotor or the stator, and a sensitive element including a first set of coils that are angularly evenly distributed, rotating together with the other from among the rotor or the stator, the coils being axially arranged in line with the target in order to be able to measure a distance from the target so as to deduce therefrom an angular position of the rotor relative to the stator.

Abstract: A backup or extrusion barrier ring assembly has multiple rows of rings in segments that have circumferentially offset slots. The rings are rotationally locked to each other to maintain the circumferential offset of the slots that allow the rings to be more flexible in the setting process. The rings as a unit can be mounted to relatively rotate on a supporting mandrel. The rings are mounted to allow them to move axially during setting either in tandem or axially relatively to each other. The axial run in heights of rings decline from innermost to outermost so that when set the heights approach each other to minimize or eliminate sharp ends against the seal. Alternatively, the height difference can be such as to allow ends to bend over an adjacent end further out radially so that free ends bend toward the surrounding tubular and avoid the seal.

Abstract: A device for detecting and discriminating operating faults in an electrical power supply circuit comprises a control circuit integrating a power transistor controlling the electric supply of a load, detectors and a logic circuit connected to a computer by two lines, an input/output control line and a selection line. The computer selectively and successively controls, by specific combinations of logic signals applied on the input/output control line and the selection line, several logic sub-circuits for the detection and identification of operating faults in the power supply circuit of the load, such faults being permanent control, short circuit and open circuit, the circuit in return imposing on the input/output control line logic levels representative of the presence of absence of operating faults, during the time intervals in which the computer is configured to read these levels. For a plurality of the power supply circuits, the selection line is common to all such power supply circuits.