WO2019185309A1 - Dispositif de détection - Google Patents

Dispositif de détection Download PDF

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Publication number
WO2019185309A1
WO2019185309A1 PCT/EP2019/055473 EP2019055473W WO2019185309A1 WO 2019185309 A1 WO2019185309 A1 WO 2019185309A1 EP 2019055473 W EP2019055473 W EP 2019055473W WO 2019185309 A1 WO2019185309 A1 WO 2019185309A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
sensor device
rotor
active
elements
Prior art date
Application number
PCT/EP2019/055473
Other languages
German (de)
English (en)
Inventor
Walter Hirning
Vitali Haag
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2019185309A1 publication Critical patent/WO2019185309A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/08—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/204—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils
    • G01D5/2053—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils by a movable non-ferromagnetic conductive element

Definitions

  • the invention relates to a sensor device according to the preamble of claim 1.
  • An addition to the invention relates to a steering system according to claim 15.
  • Steering systems with an example designed as Ser vomotor electric motor and with a sensor device for Erfas solution rotor position information of a rotor of the electric motor are known from the prior art, wherein the sensor device, for example, a single magnetically acting position sensor unit or a single inductive position sensor unit for He Constitution of Rotor position information may have.
  • the sensor device for example, a single magnetically acting position sensor unit or a single inductive position sensor unit for He Constitution of Rotor position information may have.
  • the problem with the United use of a single position sensor unit is that even a defect and / or failure of a sensor component of the position sensor unit used can lead to failure of the entire sensor device and especially in steering systems to be particularly safety-critical situations.
  • the object of the invention is, in particular, to provide a sensor device with improved properties with regard to operational reliability.
  • the object is achieved by an object having the features of claim 1.
  • An of claim 15, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.
  • the invention relates to a sensor device for, in particular redundant th, detection of at least one position information of a movably mounted rotor of an electric motor, in particular a steering system, with at least two operatively connected to the rotor position sensor units, in particular a first position sensor unit and one, in particular from the first position sensor unit separate and / or independent, second position sensor unit, for detecting the position information of the rotor, in particular during operation of the Elekt romotors.
  • the position sensor units have different measuring principles for detecting the position information.
  • this Ausgestal device can be provided in particular with respect to external and / or internal interference advantageous robust sensor device with a particularly high level of reliability, even in an error case in which one of the position sensor units fails, unrestricted operation of the electric motor is possible.
  • position sensor units which have different measurement principles for detecting the position information, also a particularly high fault tolerance can be achieved because several inde pendent of each other working channels for signal evaluation available ste hen.
  • the electric motor in the present case comprises in particular at least one stator and in particular the rotor mounted movably relative to the stator.
  • the electric motor is also designed as a servomotor, advantageously as a brushless motor and particularly advantageous as an asynchronous motor or as a permanent-magnet synchronous motor.
  • the electric motor as a linear motor, in particular with a linearly movable rotor, or preferably as a Rotati onsmotor, in particular with a rotatably mounted rotor, be formed.
  • the electric motor may in particular comprise at least one motor shaft, which is non-rotatably connected to the rotor formed in this case, in particular as a rotor.
  • the electric motor is particularly advantageous part of a steering system.
  • the electric motor for example, be part of an electric power steering system and be provided in particular for generating and / or providing electrical steering assistance or be part of an electrical superposition steering and in particular provided for generating and / or providing an additional steering angle and / or a variable transmission ratio be.
  • the electric motor may in particular also be part of a steering system designed as a steer-by-wire steering system.
  • the electric motor could be designed, for example, as Lenkaktuator and be provided in particular for changing a Radlenkwinkels the vehicle or be designed as Lenkeingabeaktuator and in particular be provided for generating a steering resistance and / or a restoring torque on a Lenkhandha be the steering system.
  • Lenkaktuator By "intended” is intended to be understood in particular specially designed and / or equipped.
  • the fact that an object is intended for a specific function is intended to mean, in particular, that the object fulfills and / or executes this specific function in at least one application and / or operating state.
  • a “position sensor unit” should be understood to mean, in particular, a physical and / or real assembly that is different from a soft sensor and / or virtual sensor and which is used for indirect or direct and advantageously contactless detection of at least one position information, such as an angular position Angular position, an angle change, a linear position and / or a linear path change, the rotor is provided.
  • the position sensor unit comprises at least one of a virtual Sensor different, in particular real, sensor element.
  • the position sensor units are assigned to the same rotor and are preferably each provided for contactless detection of the position information.
  • the position sensor units are advantageously structurally different from one another, in particular such that the position sensor units differ from one another by at least one component.
  • the position sensor unit itself is provided for the detection and / or measurement of the position information by the use of a "position sensor unit for direct detection of position information".
  • a position sensor unit for indirect detection of position information is intended, is to be understood in particular that the position sensor unit for detecting and / or measuring at least one correlated with the position information detection size is provided, the position information from the detection size determined is.
  • a “measuring principle of a position sensor unit is to be understood, in particular, as a measurement method used for detecting the position information, such as, for example, a magnetic, an inductive, an optical, a capacitive, a mechanical and / or a piezoelectric measuring method.
  • the sensor device can advantageously at least one Seau fer associated and advantageously movement fixed to the runner connected Läu ferbaue and at least one, in particular separately and / or separately formed by the rotor assembly and advantageously statically arranged, sensor assembly comprising the rotor assembly and the sensor assembly in each case at least one component of the position sensor units is assigned.
  • the Läu ferbauoire can in particular linearly movable relative to the sensor module formed and / or stored.
  • the rotor assembly is rotatably formed and / or supported relative to the sensor assembly.
  • At least one of the position sensor units could be provided, for example, for an optical, a capacitive, a mechanical and / or a piezoelectric detection of the position information.
  • the first position sensor unit for, in particular contactless, magnetic detection of the position information
  • the second position sensor unit for, in particular contactless, inductive detection of the position information is provided, which can be used advantageously already proven and / or robust measurement principles and / or measurement methods in the field of detection of position information of electric motors NEN.
  • the first position sensor unit in particular for detecting the position information, comprises at least one first active element immovably connected to the rotor and at least one first sensor element separate from the first active element and cooperating with the first active element.
  • the first active element is formed separately from the first sensor element and arranged spaced from the first Senso relement.
  • the first active element is advantageous part of the Läu Ferbautechnik, while the first sensor element is part of the sensor assembly.
  • the first active element is in particular linearly movable or preferably rotatable, in particular relative to the first sensor element mounted.
  • the first active element is preferably designed as a magnetic element, preferably as a permanent magnet, and the first sensor element as korres pondierendes magnetic sensor element, in particular as a Hall sensor element and / or magnetoresistive sensor element.
  • the first position sensor unit may also comprise a plurality of first active elements and / or a plurality of first sensor elements. In this way, in particular, an advantageously flexible first position sensor unit can be provided.
  • the second position sensor unit in particular for detecting the position information, comprises at least one second active element immovably connected to the rotor and at least one second sensor element separate from the second active element and cooperating with the second active element.
  • the second active element is preferably formed separately from the second sensor element and arranged at a distance from the second sensor element.
  • the second active element is advantageously part of the rotor assembly, while the second sensor element is part of the sensor assembly.
  • the second active element is in particular linearly movable or preferably rotatable, in particular relative to the second sensor element stored.
  • the second active element is preferably at least partially electrically conductive and / or magnetically permeable, particularly preferably as a wing conductor, and the second sensor element designed as a sensor coil element corresponding thereto.
  • the second position sensor unit may also comprise a plurality of second active elements and / or a plurality of second Sen sorium.
  • a "wing conductor" is to be understood as meaning in particular an object which comprises at least one, preferably at least partially electrically conductive and / or magnetically permeable, wing element which is advantageous for detecting the steering in parallel to the sensor assembly and in particular the second Sen sorelement is aligned.
  • the wing conductor comprises a plurality of wing elements, which are arranged distributed over the second active element and are preferably formed at least partially electrically conductive and / or magnetically permeable.
  • an advantageously flexible second position sensor unit can be provided.
  • the active elements are arranged coaxially to each other, in particular a structurally particularly simple structure and a particularly high Bauraumef efficiency, in particular the rotor assembly can be achieved.
  • the first active element is arranged centrally and completely surrounded by the second active element at least partially and advantageously.
  • integral should be understood as meaning, in particular, at least materially connected and / or formed with one another.
  • the material can be made, for example, by an adhesion process, an injection process, a welding process, a soldering process and / or another process.
  • adhesion process an injection process, a welding process, a soldering process and / or another process.
  • injection process a welding process
  • soldering process a soldering process
  • this is a piece of a single blank, a mass and / or a casting, such as in an extrusion process, in particular a single and / or multi-component extrusion process, and / or an injection molding process, in particular special one- and / or multi-component injection molding process, Herge provides.
  • an advantageously robust rotor assembly and / or sensor device can be provided.
  • the electric motor could be designed, for example, as a linear motor, wherein the active elements are arranged directly on the rotor, in particular fastened, are, in particular such that the active elements are mounted linearly movable.
  • the electric motor is designed as a rotary motor and at least one rotatably connected to the rotor motor shaft, on which the active elements are arranged and in particular indirectly or directly attached, in particular special such that the active elements rotatably mounted are.
  • the active elements are considered in the direction of the motor shaft concentric zueinan the arranged.
  • the active elements are advantageously arranged in a, in particular the stator facing away from, end portion of the motor shaft. In this way, in particular, an advantageously compact sensor device can be made available, which is advantageously suitable for use in steering systems.
  • the sensor device has a Halteele element for common mounting of the active elements.
  • the holding element comprises at least one holding section, which is provided for holding the active elements.
  • the holding element is also preferably integrally formed and surrounds the first active element and / or the second We kelement advantageous at least partially, and preferably at least a large part.
  • the holding element is preferably part of the rotor assembly, so that the active elements and the holding element form a common rotor construction group, in particular the previously mentioned rotor assembly. At least 55%, advantageously at least 60%, and particularly advantageously at least 65%, are to be understood by the term "for at least a large part". In this way, in particular a holder of the We kisse and / or attachment of the active elements to the rotor and / or the motor shaft can be simplified.
  • the holding element could for example consist of metal and / or a composite material.
  • the holding element is designed as a base body and at least one of the active elements is integrated into the plastic, for example by means of a multi-component injection molding process.
  • a manufacturing process can be further simplified and at the same time costs can be reduced.
  • the holding element has at least one attachment portion for, in particular immedi applicable or indirect, compound of the rotor assembly with the rotor on.
  • the mounting portion is provided for mounting the rotor assembly on the rotor and / or the motor shaft.
  • the fastening portion by means of a welded joint, a solder joint, an adhesive bond, a fusion bond and / or before given to a press connection to the rotor and / or the motor shaft connected.
  • the rotor assembly may in particular also have a, in particular additional, pin element for fastening the rotor assembly to the rotor and / or the motor shaft.
  • the Läufererbau group could alternatively or additionally be fastened in particular also on the first active element and / or the second active element on the rotor and / or the motor shaft fastened. In this way, in particular, an advantageously flexible and / or stable connection between the rotor and the rotor assembly can be achieved.
  • the sensor device has a carrier element, for example a printed circuit board, a printed circuit board and / or a printed circuit board, on which the sensor elements are arranged together.
  • the carrier element is part of the sensor assembly, so that the sensor elements and the carrier element form a common sensor assembly, in particular the sensor assembly already mentioned above. In this way, in particular a particularly simple mounting of the sensor elements can be achieved.
  • the carrier element is designed as a printed circuit board, wherein the first sensor element is arranged on a first outer layer of the carrier element and the second sensor element on one of the first outer layer against the opposite second outer layer of the carrier element.
  • the first position sensor unit comprises a plurality of first sensor elements and / or the second position sensor unit comprises a plurality of second sensor elements
  • the first sensor elements and / or the second sensor elements can also be arranged on different outer layers of the support element.
  • an advantageously high flexibility is achieved.
  • the carrier element is designed as a multilayer Lei terplatte and at least one of the sensor elements, in particular at least the second sensor element, is arranged on an inner layer of the Trä gerelements.
  • the first position sensor unit comprises a plurality of first sensor elements and / or the second position sensor unit comprises a plurality of second sensor elements
  • the first sensor elements and / or the second sensor elements can also on various which inner layers or outer layers and innenlie ing layers of Be arranged support element.
  • a special flexibility and / or space efficiency can be further increased.
  • the invention relates to a steering system with at least one electric motor, which comprises at least one movably mounted rotor, and with the above-mentioned sensor device.
  • the sensor device and the steering system should not be limited to the above-described application and embodiment.
  • the sensor device and the steering system may be used to accomplish one herein Functioning described have a number of a number of individual elements, components and units differing from a number mentioned herein.
  • FIG. 1 shows an exemplary steering system with an electric motor and with a sensor device in a simplified representation
  • FIG. 5 shows a further embodiment of a rotor assembly of another sensor device in a perspective illustration
  • FIG. 6 shows a further embodiment of a rotor assembly of another sensor device in a perspective illustration
  • FIG. 7 shows a further embodiment of a sensor module of a further sensor device in a perspective illustration
  • Fig. 8 shows a further embodiment of an electric motor and a further sensor device comprising at least two position sensor units in a detailed view and
  • Fig. 9 is a rotor assembly of the sensor device of Figure 8 in egg ner perspective view. Description of the embodiments
  • FIG. 1 shows an exemplary steering system 16a in a perspective Dar position.
  • the steering system 16a is formed in the present case as an electrically assisted steering system and has an electric power assistance in the form of a power steering. Furthermore, the steering system 16a is for use in a vehicle (not shown), in particular a motor vehicle, vorgese hen.
  • the steering system 16a in an installed state, has an operative connection with vehicle wheels 48a of the vehicle and is provided for influencing a direction of travel of the vehicle.
  • a steering system with an electrical superposition steering system.
  • a steering system could in principle also be designed as a steer-by-wire steering system.
  • the steering system 16a includes a, in the present case exemplified as a steering wheel, steering handle 50a for applying a manual Lenkmo ment, designed as a rack steering gear wheel steering angle adjuster 52a, which provided a steering input to the steering handle 50a implement in a steering movement of the vehicle wheels 48a , And a steering column 54a for, in particular mechanical, connection of the steering handle 50a with the Radlenkwinkelsteller 52a.
  • a steering handle could also be designed as a steering lever and / or steering ball or the like.
  • a steering system could in principle be free of a steering handle, for example in a purely autonomously driving vehicle.
  • a steering column could also only temporarily connect a steering handle with a steering gear, such as in a vehicle with an autonomous Fumblerbe drive and / or a steer-by-wire steering system with mechanical remindfallebe ne. In the latter case, the steering system could also be completely free of a steering column.
  • the steering system 16a comprises at least one known per se and in the present case, in particular as a servomotor formed Elektromo tor 14a (see, in particular, Figure 2).
  • the electric motor 14a is designed as a rotary motor.
  • the electric motor 14a includes a stator 56a and a movably relative to the stator 56a mounted rotor 12a.
  • the electric motor 14a comprises a motor shaft 30a which is non-rotatably connected to the rotor 12a, which in this case is designed in particular as a rotor.
  • the electromobility gate 14a is also operatively connected to the Radlenkwinkelsteller 52a.
  • the electric motor 14a is part of the electric power steering system and in particular provided for generating the electric power steering assistance.
  • an electric motor could also be part of an electrical superposition steering and in particular special for generating and / or providing an additional steering angle and / or a variable transmission ratio can be provided.
  • an electric motor could also be part of a Steer-by-wire steering system.
  • an electric motor could in principle also be any other electric motor used in a vehicle, such as a fan motor and / or a traction motor of an electric vehicle.
  • an electric motor could also be designed as a linear motor.
  • the steering system 16a includes a sensor device 10a.
  • the sensor device may also be part of a fan system of the vehicle, a traction system of the vehicle or another driving tool system.
  • the sensor device 10a is for redundant detection of a position information, in the present case, for example, a rotor position, the Läu fers 12a of the electric motor 14a provided, in particular during operation of the Elekt romotors 14a.
  • the sensor device 10a comprises at least two position sensor units 18a, 20a, in particular a first position sensor unit 18a and a second position sensor unit 20a.
  • the position sensor units 18a, 20a are structurally different from one another.
  • the position sensor units 18a, 20a are formed independently of each other.
  • the position sensor units 18a, 20a are associated with the rotor 12a.
  • the position sensor units 18a, 20a are arranged such that the position sensor units 18a, 20a do not influence one another.
  • the position sensor units 18a, 20a are each easilybil det as physical sensor units and thus different in particular from a soft sensor and / or a virtual sensor.
  • the position sensor units 18a, 20a are each for non-contact detection of the position information, in particular the same position information, intended.
  • the position sensor units 18a, 20a have different measuring principles for detecting the position information.
  • the first position sensor unit 18a for, in particular contactless, magnetic detection of the position information
  • the second position sensor unit 20a for, in particular special contactless, inductive detection of the position information is provided.
  • a sensor device could also have at least three and / or at least four position sensor units which have different measuring principles for detecting position information, in particular the same position information.
  • the first position sensor unit 18a comprises a first active element 22a which is immovably connected to the rotor 12a for detection of the positional information and, in the present case, two first sensor elements 24a, 25a which are separate from the first active element 22a and cooperate with the first active element 22a.
  • the first active element 22a is spaced from the first sensor elements 24a, 25a.
  • the first active element 22a is arranged on the motor shaft 30a.
  • the first active element 22a is arranged in an end region of the motor shaft 30a facing away from the stator 56a. Consequently, the first active element 22a is rotatably mounted in the present case.
  • the first active element 22a is part of a rotor assembly 34a of the sensor device 10a.
  • the first active element 22a is designed as a magnetic element, in the present case as a pin magnet with a permanent magnet and a pin element.
  • the first sensor elements 24a, 25a are designed as corresponding magnetic sensor elements.
  • one of the first sensor elements 24a, 25a is designed, for example, as a Hall sensor element and another of the first sensor elements 24a, 25a as a magnetoresistive sensor element.
  • the first sensor elements 24a, 25a are part of a sensor assembly 40a of the sensor device 10a arranged statically in contrast to the rotor assembly 34a.
  • a first position sensor unit could also have exactly one first sensor element or at least three first sensor elements.
  • a first position sensor unit could in principle also comprise a plurality of first active elements.
  • a first active element could in principle also be mounted linearly movable relative to a first sensor element.
  • the second position sensor unit 20a comprises, for detecting the position information, a second active element 26a which is immovably connected to the rotor 12a and at least one second sensor element 28a which is separate from the second active element 26a and cooperates with the second active element 26a.
  • the second active element 26a is arranged at a distance from the second sensor element 28a.
  • the second active element 26a is arranged on the motor shaft 30a.
  • the second active element 26a is, in particular analogous to the first We kelement 22a, disposed in the stator 56a facing away from the end portion of the motor shaft 30a. Consequently, the second active element 26a is rotatably mounted in the present case.
  • the second active element 26a is part of the rotor assembly 34a.
  • the second active element 26a is arranged coaxially with the first active element 22a.
  • the second active element 26a is further arranged such that it completely surrounds the, in particular centrally arranged, first active element 22a in the circumferential direction Rich.
  • the second active element 26a is formed integrally with the first active element 22a.
  • the second active element 26a is further formed as a wing conductor and has in the present case, for example, four wing gelieri 58a, which in the present case at least partially made of a metal, in particular aluminum.
  • the second sensor element 28a is designed as a corresponding sensor coil element. In the present case, the second sensor element 28a is designed as a known exciter and / or servspule.
  • the second sensor element 28a is part of the sensor assembly 40a.
  • the second position sensor unit 20a comprises at least one excitation and / or evaluation circuit 60a, which in particular is electrically connected to the second sensor element 28a and is part of the sensor assembly 40a.
  • a second position sensor unit could also have a plurality of second active elements and / or second sensor elements.
  • a second active element could also have one of four different number of wing elements.
  • the number of wing elements is adapted to a pole pair number of a monitored electric motor.
  • a second active element could in principle also be mounted linearly movable relative to a second sensor element. In this case, it is conceivable, in particular, for the second sensor, designed as a field coil and / or receiver coil, to be provided. Relement with a structure deviating from a circular structure, in particular a linear structure form.
  • the sensor device 10a further has a retaining element 32a for the common retention of the active elements 22a, 26a.
  • the holding element 32a is part of the Läu Ferbauè 34a. In this case, the holding element 32a forms together with the We kiatan 22a, 26a, the rotor assembly 34a.
  • the holding element 32a is formed integrally with the second active element 26a in the present case.
  • the holding element 32a is arranged on one of the motor shaft 30a facing side of the second active element 26a.
  • the holding element 32a surrounds the first active element 22a to at least a large part.
  • the Hal teelement 32 a in the present case of metal.
  • a Halteele element could also be formed separately and / or separately from a second active element.
  • a holding element could also consist of a material deviating from metal, such as a plastic or the like.
  • the sensor device 10a comprises a carrier element 38a, on which the sensor elements 24a, 25a, 28a and the excitation and / or Auswer tesciens 60a are arranged.
  • the support member 38a is part of the sensor assembly 40a.
  • the carrier element 38a forms together with the sensor elements 24a, 25a, 28a and the excitation and / or evaluation circuit 60a the sensor module 40a.
  • the support member 38 a is also manufactured det as a printed circuit board.
  • the sensor elements 24a, 25a, 28a and the Erre ger- and / or evaluation circuit 60a disposed on a first outer layer 42a of the support member 38a.
  • sensor elements could also be arranged on different outer layers of a carrier element and / or on outer and inner layers of a Romaele management.
  • the combination of the position sensor units 18a, 20a according to the invention makes it possible to provide a sensor device 10a, which is advantageously robust with respect to external and / or internal interference, with a particularly high level of operational reliability, in which case one of the positions Sensor units 18a, 20a fails, unrestricted operation of the electromobility sector 14a is made possible.
  • FIGS. 5 to 9 show further exemplary embodiments of the invention.
  • the following description and drawings are limited to the differences between the embodiments We sentlichen, Be be equal to like components, in particular with respect to components with the same reference numerals, in principle, to the drawings and / or the description of the other embodiments, in particular Figures 1 to 4, can be referenced.
  • the letter a is the reference numerals of the embodiment in the figures 1 to 4 adjusted.
  • the letter a is replaced by the letters b to e.
  • FIG. 5 shows a further embodiment of the invention.
  • the execution example of Figure 5, the letter b is adjusted.
  • the further embodiment example of Figure 5 differs from the previous embodiment, at least substantially by an embodiment of a second Wirkele element 26 b of a second position sensor unit 20 b of a sensor device 10 b.
  • the second active element 26b is designed as a wing conductor in the form of egg nes wire model.
  • the second active element 26b comprises at play four at least partially conductive and / or magnetically permeable formed from wing elements 58b, each having at least one die gelausneh determination 62b, which advantageously reduces a weight and / or a material savings can be achieved.
  • FIG. 6 shows a further exemplary embodiment of the invention. From the exemplary embodiment of Figure 6, the letter c is adjusted.
  • the further exemplary embodiment of FIG. 6 differs from the previous embodiment examples at least essentially by an embodiment of a second active element 26c of a second position sensor unit 20c of a sensor device 10c and / or by an embodiment of a holding element 32c of the sensor device 10c.
  • the holding member 32c made of plastic, in particular a non-porous plastic.
  • the holding member 32 c is further formed as a base body and in particular to a shape of the second active element 26 c fits.
  • the holding member 32c is formed as a wing base body and has in the present case, for example, four to the wing elements 58c of the two th active element 26c corresponding further wing elements 59c.
  • the second active element 26c is integrated into the plastic of the holding element 32c, for example by means of a multi-component injection molding process, whereby in particular a manufacturing process can be simplified and at the same time costs can be reduced.
  • FIG. 7 shows a further exemplary embodiment of the invention.
  • the imple mentation of Figure 7, the letter d is adjusted.
  • the further exemplary embodiment of FIG. 7 differs from the previous embodiment examples, at least essentially by an embodiment of a support element 38 d of a sensor device 10 d.
  • the carrier element 38d is formed out of a multilayer printed circuit board and comprises a first outer layer 42d, a second outer layer 44d opposite the first outer layer 42d, and an inner layer 46d disposed between the outer layers 42d, 44d.
  • a first sensor element 24d of a first position sensor unit 18d on the first outer layer 42d of the Trä gerelements 38d arranged.
  • a further first sensor element 25d of the first position sensor unit 18d is arranged on the second outer layer 44d of the carrier element 38d.
  • a second sensor element 28d of a second position sensor unit 20d on the inner layer 46d of the Trä gerelements 38d arranged.
  • a first sensor element of a first position sensor unit could also be arranged on a first outer layer of a carrier element, while a second sensor element egg ner second position sensor unit on one of the first outer layer ge opposite second outer layer of the carrier element could be arranged.
  • Figures 8 and 9 show a further embodiment of the invention. The embodiment of Figures 8 and 9, the letter e is adjusted. The further embodiment of Figures 8 and 9 differs from the previous embodiments, at least substantially by an embodiment of a holding element 32e of a rotor assembly 34e a Sensorvor direction lOe.
  • the holding element 32e is integrally formed and comprises a Garab section 64e for holding the active elements 22e, 26e and a mounting portion 36e for connecting the rotor assembly 34e with a runner of a
  • the attachment portion 36e is provided for direct attachment of the rotor assembly 34e to a motor shaft 30e of the electromobility sector 14e.
  • the fixing portion 36e is connected to the motor shaft 30e by means of a press connection.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

L'invention concerne un dispositif de détection (10a-e) destiné à détecter au moins une information de position d'un rotor (12a), monté de façon mobile, d'un moteur électrique (14a, 14e), en particulier d'un système de direction (16a). Le dispositif de détection comprend au moins deux unités de détection de position (18a, 20a ; 20b ; 20c, 18d, 20d) reliées fonctionnellement au rotor (12a) pour détecter l'information de position du rotor (12a). Selon l'invention, les unités de détection de position (18a, 20a ; 20b ; 20c ; 18d, 20d) présentent des principes de mesure différents pour détecter l'information de position.
PCT/EP2019/055473 2018-03-29 2019-03-06 Dispositif de détection WO2019185309A1 (fr)

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DE102018204901.7A DE102018204901A1 (de) 2018-03-29 2018-03-29 Sensorvorrichtung
DE102018204901.7 2018-03-29

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Families Citing this family (8)

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DE102019207070A1 (de) * 2019-05-15 2020-11-19 Thyssenkrupp Ag Rotorpositionssensor und Lenksystem für ein Kraftfahrzeug mit einem Rotorpositionssensor
EP3875913B1 (fr) 2020-03-04 2023-10-25 Melexis Technologies SA Capteur hybride de position
DE102020117448A1 (de) 2020-07-02 2022-01-05 Schaeffler Technologies AG & Co. KG Sensoranordnung zur Positionserfassung sowie Kupplungssystem mit der Sensoranordnung
DE102021104635A1 (de) 2021-02-26 2022-09-01 Bayerische Motoren Werke Aktiengesellschaft Targetträger für einen berührungslosen Rotorlagesensor, Rotor, elektrische Antriebsmaschine sowie Kraftfahrzeug
DE102021106879A1 (de) * 2021-03-19 2022-09-22 HELLA GmbH & Co. KGaA Positionserfassung für einen Drehwinkelsensor
EP4083577A1 (fr) * 2021-04-29 2022-11-02 Melexis Technologies SA Capteur de position fiable
FR3123118B1 (fr) * 2021-05-20 2023-10-20 Vitesco Technologies Dispositif de détection de position pour véhicule
DE102022204530A1 (de) * 2022-05-09 2023-11-09 Volkswagen Aktiengesellschaft Elektromotor und Steer-by-wire-Lenkung mit einem solchen

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DE19520299A1 (de) * 1995-06-02 1996-12-05 Bosch Gmbh Robert Einrichtung zur Lageerkennung
DE102004002570A1 (de) 2004-01-17 2005-08-04 Robert Bosch Gmbh Verfahren und Vorrichtung zur fehlertoleranten Steuerung einer mehrphasigen, geschalteten Relunktanzmaschine
DE202007010280U1 (de) * 2007-05-21 2007-09-27 Metallux Ag Potentiometer
EP2180296A1 (fr) * 2008-10-21 2010-04-28 Hella KG Hueck & Co. Dispositif de détermination d'un angle de rotation, notamment pour un arbre de direction d'un véhicule automobile
DE102013112169A1 (de) 2013-11-06 2015-05-07 Zf Lenksysteme Gmbh Redundante Rotorlageermittlung

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Publication number Priority date Publication date Assignee Title
DE19520299A1 (de) * 1995-06-02 1996-12-05 Bosch Gmbh Robert Einrichtung zur Lageerkennung
DE102004002570A1 (de) 2004-01-17 2005-08-04 Robert Bosch Gmbh Verfahren und Vorrichtung zur fehlertoleranten Steuerung einer mehrphasigen, geschalteten Relunktanzmaschine
DE202007010280U1 (de) * 2007-05-21 2007-09-27 Metallux Ag Potentiometer
EP2180296A1 (fr) * 2008-10-21 2010-04-28 Hella KG Hueck & Co. Dispositif de détermination d'un angle de rotation, notamment pour un arbre de direction d'un véhicule automobile
DE102013112169A1 (de) 2013-11-06 2015-05-07 Zf Lenksysteme Gmbh Redundante Rotorlageermittlung

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