EP1512213A1 - Servomoteur electrique - Google Patents

Servomoteur electrique

Info

Publication number
EP1512213A1
EP1512213A1 EP03724839A EP03724839A EP1512213A1 EP 1512213 A1 EP1512213 A1 EP 1512213A1 EP 03724839 A EP03724839 A EP 03724839A EP 03724839 A EP03724839 A EP 03724839A EP 1512213 A1 EP1512213 A1 EP 1512213A1
Authority
EP
European Patent Office
Prior art keywords
magnetic field
rotor
actuator according
air gap
actuator
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP03724839A
Other languages
German (de)
English (en)
Inventor
Manfred Schmitt
Karsten Mann
Michael Sommerer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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 EP1512213A1 publication Critical patent/EP1512213A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/167—Controlling of coolant flow the coolant being liquid by thermostatic control by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
    • F16K11/087—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
    • F16K11/0873—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug the plug being only rotatable around one spindle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
    • F16K31/042—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves with electric means, e.g. for controlling the motor or a clutch between the valve and the motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0025—Electrical or magnetic means
    • F16K37/0041—Electrical or magnetic means for measuring valve parameters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P2007/146—Controlling of coolant flow the coolant being liquid using valves

Definitions

  • the invention relates to an electromotive actuator according to the preamble of claim 1.
  • Such actuators are fundamentally known, the device for contactless Positionserfas solution of the drive motor, for example, the approach to certain angular positions.
  • Electronically commutable DC synchronous motors are preferably used because of their high dynamics and freedom from maintenance.
  • the electromotive actuator according to the generic term is equipped with position sensors which are spatially assigned to a magnetic field guide device for the rotor magnetic field.
  • a simple and wear-free design is obtained, which ensures high positioning accuracy without additional encoders, such as additional positioning magnets on the rotor shaft.
  • the magnetic field guiding device ensures, in particular, that a predetermined, defined magnetic field runs in the vicinity of the position sensors, with smaller mounting errors of the sensors occurring in manufacturing practice having practically no effect on the measurement signal. The dependence of the positioning accuracy on the installation position of the sensors can be significantly reduced.
  • Hall sensors with an analog output as position sensors has proven to be advantageous, because sensors of this type represent inexpensive components which are insensitive to corrosion, which are mine. their analog output signals always enable a clear position determination and thus a defined current supply to the important points in the stator of the motor.
  • the Hall sensors can easily be arranged directly in the air gap between the rotor and the magnetic field guiding device, since this can be dimensioned independently of the other design of the motor.
  • the magnetic field strength required for the control and determined by the design of the magnetic field guiding device can be specified very precisely.
  • a particularly advantageous embodiment of the magnetic field guiding device is obtained if it is designed as an axial extension of the stator and is designed in a ring shape. This creates an approximately homogeneous magnetic field between the magnetic field guiding device and the end of the rotor protruding axially beyond the stator in this area, so that minor inaccuracies with regard to the installation position of the position sensors have no significant influence on the measured field strength.
  • Magnetic field guide is designed annular. Such an arrangement is particularly easy to manufacture and generates an essentially constant magnetic field in the measuring range of the position sensors. For certain positioning tasks, however, it can also be advantageous to make the air gap between the rotor and the ring-shaped magnetic field guiding device discontinuous with a reduced air gap width and magnetic field concentration in one or more predetermined areas of its area. In this way, the positioning accuracy in the area of a magnetic field concentration can be further increased due to the higher field line density.
  • Such a discontinuous magnetic field is achieved in a particularly simple manner by varying the thickness of the magnetic field guiding device over the circumference of the rotor.
  • the measuring range can also be achieved by a different shape of the rotor end facing the magnetic field guiding device. This design can be particularly advantageous if the magnetic field guiding device is manufactured in one piece with the stator iron of the motor.
  • the actuator according to the invention is particularly suitable for producing a so-called direct actuator, the shaft of the rotor being connected directly to the actuator.
  • Such direct drives work without an intermediate transmission, which is why particularly high demands must be made on the exact positioning of the rotor, which are met particularly well and inexpensively by the measures according to the invention.
  • FIG. 1 shows a longitudinal section through an electromotive actuator according to the invention
  • FIG. 2 shows a cross section through an actuator in the area of the magnetic field device in a first embodiment
  • Figure 3 shows a cross section through an actuator in a second embodiment of the magnetic field guide
  • Figure 4 is an exploded perspective view of an actuator according to the invention for a valve in the engine cooling circuit of a motor vehicle.
  • 10 is a schematically illustrated electronically commutatable DC synchronous motor.
  • stator 12 and its rotor 14 and the rotor shaft 16 are shown.
  • Stator 12 a ring-shaped stator 12 and its rotor 14 and the rotor shaft 16 are shown.
  • Stator 12 a ring-shaped stator 12 and its rotor 14 and the rotor shaft 16 are shown.
  • Stator 12 a ring-shaped stator 12 and its rotor 14 and the rotor shaft 16 are shown.
  • Stator 12 a ring-shaped
  • Magnetic field guide device 18 which terminates approximately in the axial direction with the end face of the rotor 14.
  • the stator 12 is equipped with a three-strand excitation winding (not shown in FIG. 1 for the sake of clarity).
  • the magnetic field of the rotor 14 is generated by permanent magnets, also not shown.
  • Three Hall sensors 22 arranged symmetrically in the air gap 20 between the rotor 14 and the magnetic field guiding device 18 serve to detect the position of the rotor 14.
  • One of the three Hall sensors 22 can optionally also be saved if the signals of the other two Hall sensors are linked to one another in a suitable, known manner Determination of the current supply status for the third line.
  • FIG. 2 shows a section through the motor 10 in the area of the magnetic field guiding device 18. which is circular in this embodiment, so that an essentially constant and homogeneous magnetic field 24 arises in the air gap 20.
  • the rotor 14 is equipped with two permanent magnetic pole pairs N, S. With the rotation of the rotor 14, the magnetic field 24 in the air gap 20 between the permanent magnets of the rotor 14 and the annular magnetic field guiding device consisting of magnetically conductive material changes continuously.
  • the output signal of an analog Hall sensor 22 is determined by the magnetic induction penetrating it vertically and, in the case of the symmetrical, concentric arrangement according to FIG.
  • the parts corresponding to Figure 2 are provided with the same reference numerals.
  • the ring-shaped magnetic field device 18 does not have a uniform thickness but a discontinuously increasing or decreasing thickness, as a result of which an increased or decreased symmetrical distribution over the air gap 20
  • Magnetic field concentration results.
  • the rotor 14 in FIG. 3 also has two pole pairs.
  • the magnetic field guiding device 18 is designed in such a way that there are four regions with an enlarged air gap and four regions with a reduced air gap 20. This results in a reduced 28 or an enlarged 26 magnetic field concentration compared to the arrangement in FIG. 2.
  • the output signal of the analog Hall sensors 22 consequently no longer runs sinusoidally, but has a flatter course in the region of the zero crossings and a steeper course in each case . the maxima and minima. This causes a higher field line density of the magnetic field 24 in the areas of reduced air gap width and enables an increase in the measurement value resolution in the areas 26 of greater field line density.
  • FIG. 1 An alternative to the arrangement according to FIG. 3 with regard to the variation of the magnetic field concentration in the air gap 20 between the permanent magnetic rotor 14 and the magnetic field guiding device 18 is indicated in FIG. 1 by a dashed line. This symbolizes the possibility of shortening the rotor end 30 in predetermined areas, which likewise leads to fluctuations in the magnetic field concentration over the circumference of the air gap 20. With this measure, an effect similar to that of a configuration of the magnetic field guiding device 18 in the embodiment according to FIG. 3 can be achieved.
  • Figure 4 shows an application example of the actuator according to the invention in the form of a direct drive of a controllable valve 32 for the cooling circuit of a motor vehicle.
  • the shaft 16 of the motor 10 is here connected directly to an actuator 34 designed as a ball valve, which, in order to regulate the thermal management in the cooling circuit of the motor vehicle, has an inlet 36 of the valve 32 with the cooling water supply completely or partially in each case with an outlet 38 to the engine block or during the warm-up phase connects with a bypass 40 in order to accelerate the warm-up phase without cooling.
  • FIG. 4 thus again illustrates the possibility of ensuring the exact positioning by the inventive design of an actuator, which is particularly advantageous for the construction of a direct actuator without an intermediate gear.
  • the magnetic field guide device 18 With regard to the design of the magnetic field guide device 18, there is the possibility of a one-piece design of the Stator 12 and the magnetic field guide 18 to reduce the cost of manufacturing the actuator.
  • the magnetic field guiding device is molded directly from the solid material during the manufacture of the stator 12, so that no additional part and no additional manufacturing and assembly steps are required.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)

Abstract

L'invention concerne un servomoteur électrique comprenant un moteur synchrone à courant continu à commutation électronique (10) et un dispositif coopérant avec des capteurs de position pour détecter sans contact la position du rotor (14) du moteur (10). Ce servomoteur est particulièrement approprié à la commande directe de l'actionneur (34) d'un ensemble vanne (32) dans un véhicule automobile, de préférence dans le circuit de refroidissement du moteur ou comme vanne papillon. Ces capteurs de position (22) sont associés spatialement à un dispositif conducteur de champ magnétique (18) pour le champ magnétique (24) du rotor, ce qui permet d'obtenir une haute précision de positionnement.
EP03724839A 2002-05-25 2003-03-21 Servomoteur electrique Withdrawn EP1512213A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2002123362 DE10223362A1 (de) 2002-05-25 2002-05-25 Elektromotorischer Stellantrieb
DE10223362 2002-05-25
PCT/DE2003/000938 WO2003100950A1 (fr) 2002-05-25 2003-03-21 Servomoteur electrique

Publications (1)

Publication Number Publication Date
EP1512213A1 true EP1512213A1 (fr) 2005-03-09

Family

ID=29414178

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03724839A Withdrawn EP1512213A1 (fr) 2002-05-25 2003-03-21 Servomoteur electrique

Country Status (3)

Country Link
EP (1) EP1512213A1 (fr)
DE (1) DE10223362A1 (fr)
WO (1) WO2003100950A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120211323A1 (en) * 2009-11-09 2012-08-23 Schaeffler Technologies AG & Co. KG Method for the slip regulation of a friction clutch and clutch actuator therefor

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Publication number Priority date Publication date Assignee Title
DE10351852A1 (de) * 2003-11-06 2005-06-16 Itw Automotive Products Gmbh & Co. Kg Kühlsystem für Verbrennungskraft in Maschinen, insbesondere für Automobile
US7882852B2 (en) 2004-05-04 2011-02-08 Woodward Hrt, Inc. Direct drive servovalve device with redundant position sensing and methods for making the same
DE102004045934B4 (de) * 2004-09-22 2008-01-31 Siemens Ag Sensoreinrichtung
ITTV20060032U1 (it) * 2006-08-01 2008-02-02 Syen S R L Dispositivo per piastre di cottura a gas o elettriche.
WO2010025733A1 (fr) 2008-09-04 2010-03-11 Avn Energy A/S Vanne de régulation pour système de refroidissement
FR2947320B1 (fr) * 2009-06-30 2011-07-22 Valeo Systemes Thermiques Vanne de commande pour un circuit de refroidissement d'un moteur de vehicule automobile
FR2947606B1 (fr) * 2009-07-03 2015-02-20 Inst Francais Du Petrole Distributeur hydraulique a trois voies et commande a entrainement magnetique
DE102009032647A1 (de) * 2009-07-08 2011-01-13 Illinois Tool Works Inc., Glenview Kühlsystem für eine Verbrennungskraftmaschine
DE102009055741A1 (de) 2009-11-26 2011-06-09 Bü-Sch Armaturen GmbH Betätigungsvorrichtung für Gehäuse- oder gehäuselose Armaturen
FR2961284B1 (fr) * 2010-06-09 2013-04-19 Ksb Sas Robinet a capteur de position
DE102013208192A1 (de) 2013-05-03 2014-11-06 Behr Gmbh & Co. Kg Elektrisch antreibbares Ventil zur Regelung von Volumenströmen in einem Heiz- und/oder Kühlsystem eines Kraftfahrzeuges
GB2546322A (en) * 2016-01-15 2017-07-19 Singh Bath Charanjit A device for flushing a system
DE102017128127B4 (de) * 2017-11-28 2023-05-04 Pierburg Gmbh Magnetisches Drehschieberfluidventil
US12072040B2 (en) * 2019-10-10 2024-08-27 Avk Holding A/S Method for determining a position of a blocking element in a valve, a sensor system and use of a sensor system
EP4248117B1 (fr) * 2020-11-17 2024-08-14 AVK Holding A/S Procédé d'actionnement d'une vanne et système de clé de manoeuvre

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US4570118A (en) * 1981-11-20 1986-02-11 Gulf & Western Manufacturing Company Angular position transducer including permanent magnets and Hall Effect device
US5418416A (en) * 1983-09-05 1995-05-23 Papst Licensing Gmbh Brushless three-phase DC motor
EP0861184B1 (fr) * 1995-11-16 2000-03-22 Lucas Industries Limited Ameliorations dans des organes de commande electriques de systemes de vehicules
US6460567B1 (en) * 1999-11-24 2002-10-08 Hansen Technologies Corpporation Sealed motor driven valve
DE10052318A1 (de) * 2000-10-21 2002-05-02 Bosch Gmbh Robert Torquemotor

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120211323A1 (en) * 2009-11-09 2012-08-23 Schaeffler Technologies AG & Co. KG Method for the slip regulation of a friction clutch and clutch actuator therefor
US9014935B2 (en) * 2009-11-09 2015-04-21 Schaeffler Technologies AG & Co. KG Method for the slip regulation of a friction clutch and clutch actuator therefor

Also Published As

Publication number Publication date
WO2003100950A1 (fr) 2003-12-04
DE10223362A1 (de) 2003-12-04

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