Abstract: The invention relates to an actuator comprising at least one epicyclic gear stage (28, 28.1, 28.2), and including an angular position sensor (42) comprising a target (46) mounted in a secured manner on a connecting rod (52) which is secured in rotation to a output mechanical connector (24) of the actuator (10), characterized in that the input component of the epicyclic gear stage is guided in rotation on the connecting rod (52) with a first positive diametrical guide clearance (“jg1”) relative to the main axis (A2), in that the output component of the epicyclic gear stage is rigidly connected to the connecting rod (52), and in that a rotatable assembly of the epicyclic gear stage (28) is positioned relative to the actuator casing (12) with a diametrical displacement clearance (“jd”) which is at least 3 times greater than the first diametrical guide clearance (“jg1”).

Abstract: The invention relates to a method and a device for measuring the mechanical angular position of a rotor including, during a calibration phase and then a setting phase: acquiring Ns measurement signals, at measurement locations offset by a corresponding mechanical angle, modulo 2Pi/Nc radians of angle, to Pi/(2 x Nc) radians for Ns=2 and 2Pi/3Nc radians for Ns=3; compute an instantaneous electrical angular position value taking into account the arctangent of the ratio of the values of the two measurement signals for the time under consideration, or the arctangent of the ratio of the values of the two transforms obtained by a Clarke transform, applied to three measurement signals; determine electrical calibration (SIGcb) and setting (Sigi) signatures; determine an angular measurement offset value by an operation of resetting the signatures.

Abstract: A method for determining an angular position between two parts having a magnetized body cylindrical of revolution and with a diametrical magnetization; and two measurement cells in positions spaced by a non-zero fixed angle strictly less than a 90 degree angle about the axis of rotation. The method includes arranging the two measurement cells on the second part such that their primary measurement axes are parallel to each other, and that their secondary measurement axes are parallel to each other; and determining a value representative of the relative angular position as a function of a ratio between the difference of the secondary components and the difference of the primary components, measured by the two cells.

Abstract: A method for determining a relative angular position between two parts about an axis of rotation (A), implementing a magnetized body (10), in the shape of an angular curved sector about the axis of rotation (A), characterized in that the magnetization plane of the magnetized body (PM) is parallel to the axis of rotation (A), for a sensor system having such a magnetized body, and to a method for manufacturing such a magnetized body.

Abstract: An inductive position sensor for determining the position of a moving body along a linear or rotary path (F), including: a moving target (3) adapted to modify an electromagnetic field; a fixed circuit board (5) extending along a limited portion and including a primary coil (7) surrounding two secondary coils (8, 9) having substantially identical lengths (L) and having shapes of sine and cosine functions; a current generator (11) to create an inductive coupling modulated by the position of the target; a detector (13) of the linear or angular position of the target; and a system for balancing the coupling between the primary coil (7) and the secondary coils (8, 9) to compensate for the measurement offset induced by the proximity between the secondary coils (8, 9) and the end segments (7b) of the primary coil (7).

Abstract: A method for determining a relative angular position between two parts about an axis of rotation (A), implementing a magnetized body (10), in the shape of an angular curved sector about the axis of rotation (A), characterized in that the magnetization plane of the magnetized body (PM) is parallel to the axis of rotation (A), for a sensor system having such a magnetized body, and to a method for manufacturing such a magnetized body.

Abstract: An inductive position sensor for determining the position of a moving body along a linear or rotary path (F), including: a moving target (3) adapted to modify an electromagnetic field; a fixed circuit board (5) extending along a limited portion and including a primary coil (7) surrounding two secondary coils (8, 9) having substantially identical lengths (L) and having shapes of sine and cosine functions; a current generator (11) to create an inductive coupling modulated by the position of the target; a detector (13) of the linear or angular position of the target; and a system for balancing the coupling between the primary coil (7) and the secondary coils (8, 9) to compensate for the measurement offset induced by the proximity between the secondary coils (8, 9) and the end segments (7b) of the primary coil (7).

Abstract: The invention proposes a method for determining an angular position between two parts (14, 16) comprising: a magnetized body (10) cylindrical of revolution and with a diametrical magnetization; two measurement cells in positions spaced by a non-zero fixed angle strictly less than 90 degree angle about the axis of rotation (A); characterized in that: the first and second measurement cells (11, 12) are arranged on the second part such that their respective primary measurement axes (x) are parallel to each other, and that their respective secondary measurement axes (y) are parallel to each other; the method determines a value representative (?) of the relative angular position as a function of a ratio between on the one hand the difference of the secondary components and on the other hand the difference of the primary components, measured by the two cells (11, 12).

Abstract: The invention proposes an actuator for a component of a land motor vehicle, of the type including an actuator casing (12) which is produced by injection molding of thermoplastic polymer material and which delimits an internal volume in which are arranged: at least one electric motor (16), and an internal mechanical transmission (18) comprising at least a first gear wheel (24), which has an axis of rotation (A2) perpendicular to the axis of rotation (A1) of the drive shaft (20), characterized in that the first gear wheel (24) has a toothing (28), called axial toothing, which is formed of gear teeth having a bottom-top extension according to the direction of the axis of rotation (A2) of the first gear wheel (24), and which meshes with the output pinion (22) of the electric motor (16).

Abstract: The invention provides a measurement sensor for determining the position of a moving body, the sensor comprising a series of at least four detector probes for detecting a physical magnitude coming from a target comprising at least one track for creating a physical magnitude that is measurable by the detector probes and that varies along the path of the target with a function that is continuous and that includes a first harmonic and a second harmonic, the probes being connected to a processor unit for processing signals delivered by the probes, the processor unit including a reconstruction system for performing a linear combination of the signals and for obtaining firstly two quadrature signals including solely the first harmonic, and secondly two quadrature signals including solely the second harmonic, the unit also including a calculation system for processing the quadrature signals in order to determine the position of the moving body.

Abstract: The invention relates to a method for diagnosing a particulate filter by means of a soot sensor, the method being based on the direct analysis of the temporal signal supplied by the soot sensor (CAP) and the use of the available quantities (PAR) in the control unit of the heat engine. These data allow for a classification (CLA) of an indicator correlated to the cumulative quantity of soot (RES) in a multidimensional space (GRA). Based on the classification (CLA), the existence of a failure of the particulate filter is determined.

Abstract: The invention relates to a magnetic sensor for determining position along a travel path (T) between a target (2) and a measurement system (3) for measuring the amplitude of the magnetic field created or modified by the target. The sensor comprises: a creation system for creating a magnetic field in a direction (M) perpendicular to the travel path (T) and with an intensity that varies with a parabolic relationship; a measurement system (3) comprising at least two mutually spatially offset measurement elements (3a), (3b) that are sensitive to the amplitude of the magnetic field in a given direction; and a processor circuit suitable for performing differential processing on the signals delivered by the measurement elements in order to obtain a linear variation signal giving the position of the target along the travel path.

Abstract: The present invention relates to an exhaust sensor (1) comprising a tubular support body (2) receiving a measurement probe (3), a first end of said probe extending beyond a first end of the tubular support body through an opening therein, and a second end of said probe being secured to an electrical connection connector (4) housed inside the tubular support body (2) and fitting closely against its walls. According to the invention, the measurement probe is sealed inside the tubular support body (2) and is thermally decoupled from the environment outside the tubular support body by means of an assembly of spacers (10, 11, 12, 13) made of ceramic and of glass, the spacers being threaded around the measurement probe and distributed inside the tubular support body between the electrical connection connector and the first end of the tubular support body so as to provide at least two separate cavities, said spacers providing leaktight sealing between the measurement probe and the tubular support body.

Abstract: The invention relates to a magnetic sensor for determining the position of a part (2) movable firstly in rotation over a limited angular stroke by virtue of a rotary movement (R), and secondly in translation along a translation axis (X) and over a limited linear stroke, this sensor including both a magnetized target (3) mounted on and fastened to the movable part (2) and taking the form of a radially-magnetized part-cylinder having an axis of symmetry coinciding with the translation axis (X) and also a system (5) for measuring the magnetic field of the magnetized target to determine the position of the target in three dimensions. According to the invention, in order to determine the position and the orientation of the target, the system (5) acts at a single point to measure the direction of the magnetic field in two orthogonal planes, one of which (P1) is normal to the rotary movement (R) and the other of which (P2) is normal to the movement in translation (X).

Abstract: A measuring method of contactless magnetic detection of relative movement along a trajectory between a main creation system and a measuring system sensitive to the direction of the magnetic field, the creation system creating a main magnetic field of direction that varies in a plane detected by the measuring system to determine the relative position along that trajectory. The method includes subjecting the measuring system to a compensation magnetic field of direction that is fixed and opposite to the direction of the maximum main magnetic field measured by the measuring system and delivered uniquely by the main creation system and in determining the direction of a magnetic field resulting from the combination of the main magnetic field and the compensation magnetic field by measuring the two mutually-orthogonal components of the resultant magnetic field respectively varying substantially as cosine and sine functions of the angle of the resultant magnetic field.

Abstract: An electrical connection system for a vehicle, comprising an elongated dielectric component (3) equipped with at least one electrode electrically connected to electrical contact pads (7), two dielectric half-shells (14) assembled face-to-face, electrical contact fingers (19) connecting with the pads, interposed between at least one half-shell and the component, a spring collar (21) surrounding the half-shells (14) to provide for holding them in position. The half-shells (14) include at the proximal part a pivot (23) such that the half-shells open angularly relative to one another, the half-shells (14) together include on the outside a bearing surface for a tubular body providing for bringing the half-shells together.

Abstract: A position sensor coder of the type comprising a multipolar magnetic annulus (2) provided at its circumference with poles having polarities of opposite signs, the coder including at least one mark zone (Pi) presenting an angular width (Li) greater than the angular width of each of the alternating poles situated outside said zone around the circumference of the annulus, the coder being characterized in that said mark zone (Pi) comprises two adjacent singular poles (Ni, Si) presenting polarities of opposite signs and placed in the continuity of pole alternation in the annulus (2) and of angular width that is greater than the angular width of the poles lying outside the mark zone, the magnetization within the singular poles varying gradually in continuous manner between the two ends of the mark zone.

Abstract: The invention provides a measuring device for measuring soot deposition, said device having a measuring probe (3) for measuring the quantity of soot deposited on a collection surface (2) of an elongate dielectric substrate, said probe including detection electrodes (6, 7) that are arranged in adjacent manner and that are for connecting to an electronic system that is capable of evaluating the quantity of soot deposited on the collection surface. In the invention, the device includes, for at least one detection electrode (6, 7), a measurement loop (B1) that includes said at least one detection electrode (6, 7) and that is connected to a detection system for detecting the variation in the electric resistance of said measurement loop, so as to determine the operating state of said detection electrode.

Abstract: The invention relates to a magnetic sensor for determining the position of a part (2) movable firstly in rotation over a limited angular stroke by virtue of a rotary movement (R), and secondly in translation along a translation axis (X) and over a limited linear stroke, this sensor including both a magnetized target (3) mounted on and fastened to the movable part (2) and taking the form of a radially-magnetized part-cylinder having an axis of symmetry coinciding with the translation axis (X) and also a system (5) for measuring the magnetic field of the magnetized target to determine the position of the target in three dimensions. According to the invention, in order to determine the position and the orientation of the target, the system (5) acts at a single point to measure the direction of the magnetic field in two orthogonal planes, one of which (P1) is normal to the rotary movement (R) and the other of which (P2) is normal to the movement in translation (X).

Abstract: A measuring method of contactless magnetic detection of relative movement along a trajectory between a main creation system and a measuring system sensitive to the direction of the magnetic field, the creation system creating a main magnetic field of direction that varies in a plane detected by the measuring system to determine the relative position along that trajectory. The method includes subjecting the measuring system to a compensation magnetic field of direction that is fixed and opposite to the direction of the maximum main magnetic field measured by the measuring system and delivered uniquely by the main creation system and in determining the direction of a magnetic field resulting from the combination of the main magnetic field and the compensation magnetic field by measuring the two mutually-orthogonal components of the resultant magnetic field respectively varying substantially as cosine and sine functions of the angle of the resultant magnetic field.