DE102010041182A1 - Electromotor i.e. direct-current motor, for slip-controlled motor car brake assembly, has motor shaft supported in housing of stator, and sensory unit temporarily mounted on housing for determining motor characteristic curve of electromotor - Google Patents

Electromotor i.e. direct-current motor, for slip-controlled motor car brake assembly, has motor shaft supported in housing of stator, and sensory unit temporarily mounted on housing for determining motor characteristic curve of electromotor Download PDF

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DE102010041182A1
DE102010041182A1 DE102010041182A DE102010041182A DE102010041182A1 DE 102010041182 A1 DE102010041182 A1 DE 102010041182A1 DE 102010041182 A DE102010041182 A DE 102010041182A DE 102010041182 A DE102010041182 A DE 102010041182A DE 102010041182 A1 DE102010041182 A1 DE 102010041182A1
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housing
motor
electric motor
rotor
determining
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Andreas Richter
Jan Statzner
Dirk Marschalkowski
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Continental Teves AG and Co OHG
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Continental Teves AG and Co OHG
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H02K11/225—Detecting coils
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • G01R31/343—Testing dynamo-electric machines in operation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/66—Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the machine, e.g. with impedances or switches

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)

Abstract

The electromotor has a rotor connected to a motor shaft (4), which is supported in a housing (1) of a stator. A commutator is provided with multiple commutator segments for commutation of the rotor that is provided with windings. The commutator segments are fixed in the housing that comprises brushes contacting the respective commutator segments. A mobile sensory unit is temporarily mounted on the housing for determining a motor characteristic curve of the electromotor. An induction coil (2) is positioned as the sensory unit on an external periphery of the housing. An independent claim is also included for a method for determining a motor characteristic curve of an electromotor.

Description

Die Erfindung betrifft einen Elektromotor, insbesondere für schlupfgeregelte Kraftfahrzeugbremsanlagen, nach dem Oberbegriff des Anspruchs 1.The invention relates to an electric motor, in particular for slip-controlled motor vehicle brake systems, according to the preamble of claim 1.

Elektromotoren finden vielfältige Einsatzmöglichkeiten, wobei insbesondere beim Einsatz von Gleichstrommotoren in schlupfgeregelte Kraftfahrzeugbremsanlagen besondere Anforderungen an die Genauigkeit der Regelgüte gestellt werden. Ein derartige Kraftfahrzeugbremsanlage ist beispielsweise aus DE 103 55 239 A1 bekannt, das keine geeignete Sensoren aufweist, um mit Blick auf die Toleranzen der verwendeten Gleichstrommotore eine Kalibrierung durchführen zu können.Electric motors find a variety of applications, in particular with the use of DC motors in slip-controlled motor vehicle brake systems special demands are placed on the accuracy of the control quality. Such a motor vehicle brake system is for example off DE 103 55 239 A1 known, which has no suitable sensors in order to carry out a calibration in view of the tolerances of the DC motors used.

Da die charakteristischen Motorkennlinien dieser Gleichstrommotoren innerhalb zulässiger Grenzen teilweise große Schwankungen aufweisen, ist es nunmehr die Aufgabe der vorliegenden Erfindung, mit möglichst einfachen, zeit- und damit kostensparenden Maßnahmen im Rahmen der Motorenfertigung die charakteristischen Motorkennlinien für jeden produzierten Elektromotor bestimmen zu können.Since the characteristic motor characteristics of these DC motors within certain limits have large fluctuations in some cases, it is now the object of the present invention to be able to determine the characteristic motor characteristics for each produced electric motor with the simplest, time and thus cost-saving measures within the engine manufacturing.

Diese Aufgabe wird für einen Elektromotor der angegebenen Art erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst.This object is achieved according to the invention for an electric motor of the type indicated by the characterizing features of claim 1.

Weitere Merkmale und Vorteile der Erfindung werden nachfolgend anhand der Beschreibung eines Ausführungsbeispiels verdeutlicht.Further features and advantages of the invention will become apparent from the description of an embodiment.

Es zeigen:Show it:

1 einen Elektromotor mit einem am Außenumfang seines Gehäuses angeordneten sensorischen Mittel zur Erfassung der Rotordrehung, 1 an electric motor having a sensory means for detecting the rotor rotation arranged on the outer circumference of its housing,

2 ein Diagramm mit den Parametern elektrische Spannung U, elektrischer Strom I, Motordrehzahl n und Motordrehmoment T zur Charakterisierung der individuellen Motorkennlinien des in 1 abgebildeten Elektromotors. 2 a diagram with the parameters voltage U, electric current I, motor speed n and motor torque T for characterizing the individual motor characteristics of in 1 pictured electric motor.

Die 1 zeigt einen für den Einsatz in einer schlupfgeregelte Kraftfahrzeugbremsanlagen geeigneten Elektromotor, dessen in einem Gehäuse 1 eines Stators gelagerte Motorwelle 3 mit einem Rotor verbunden ist, um eine zur Förderung von Bremsflüssigkeit im Bremssystem erforderliche Pumpe anzutreiben. Da in derartigen Kraftfahrzeugbremsanlagen Gleichstrommotore zum Einsatz kommen, umfasst der mit Wicklungen versehene Rotor einen Kommutator mit mehreren Kommutatorlamellen, die von mehreren im Gehäuse 1 fixierten Bürsten kontaktiert werden.The 1 shows a suitable for use in a slip-controlled motor vehicle brake electric motor, whose in a housing 1 a stator mounted motor shaft 3 is connected to a rotor to drive a required for the promotion of brake fluid in the brake system pump. Since DC motors are used in such motor vehicle brake systems, the rotor provided with windings comprises a commutator with a plurality of commutator bars, of several in the housing 1 fixed brushes are contacted.

Zur Bestimmung jeder charakteristischen Motorkennlinie wird erfindungsgemäß an jedem fertiggestellten Elektromotor kurzzeitig ein mobiles sensorisches Mittel am Gehäuse 1 angebracht, das in Form einer Induktionsspule 2 am Außenumfang des Gehäuses 1 positioniert wird, wodurch zur Berechnung der Motordrehzahl n inkrementale Winkelinformationen bezüglich des drehenden Rotors für die erforderliche Messzeitdauer verhältnismäßig einfach mittels der Induktionsspule 2 erfassbar sind.In order to determine each characteristic motor characteristic, according to the invention, a mobile sensory agent is briefly applied to the housing at each finished electric motor 1 attached, in the form of an induction coil 2 on the outer circumference of the housing 1 whereby, for the calculation of the engine speed n, incremental angular information with respect to the rotating rotor for the required measuring period is relatively easy by means of the induction coil 2 are detectable.

Zur Bestimmung der Motordrehzahl n ist eine Auswerteelektronik mit der Induktionsspule 2 verbunden, wobei die Motordrehzahl n in der Auswerteelektronik anhand des Verhältnisses der Referenzspannung Usoll zur gemessenen elektrischen Spannung Umess und anhand der Rotorbeschleunigung ω . nach der Formel

Figure 00030001
berechnet wird.To determine the engine speed n is an evaluation with the induction coil 2 connected, wherein the engine speed n in the transmitter on the basis of the ratio of the reference voltage U soll to the measured electrical voltage U mess and based on the rotor acceleration ω. according to the formula
Figure 00030001
is calculated.

Ferner wird anhand der durch die Induktionsspule 2 erfassten Rotorbeschleunigung ω ., unter Berücksichtigung des vorzugsweise empirisch ermittelten polaren Trägheitsmoments Θ des Rotors, das Motordrehmoment T in der Auswerteelektronik nach der Formel T = Θ·ω . berechnet.Further, by means of the induction coil 2 detected rotor acceleration ω., Taking into account the preferably empirically determined polar moment of inertia Θ of the rotor, the motor torque T in the transmitter according to the formula T = Θ · ω. calculated.

Die Ermittlung der charakteristischen Motorkennlinie erfolgt sowohl in einem lastlosen, drehmomentfreien ersten Motorbetriebszustand (T = 0 Nm) als auch in einem belasteten, drehmomentbeaufschlagten zweiten Motorbetriebszustand mit einem Motordrehmoment von wenigstens 0,5 Nm, wozu jeweils die elektrische Stromaufnahme I des Elektromotors und die Motordrehzahl n bei einer konstanten elektrische Referenzspannung Usoll, vorzugsweise 13 Volt, in der Auswerteelektronik ermittelt wird. Zur Messung der elektrischen Spannung Umess und des elektrischen Stroms I ist die Auswerteelektronik mit einem zur Energieversorgung des Elektromotors am Gehäuse 1 vorgesehenen Elektroanschluss verbunden.The determination of the characteristic engine characteristic is carried out both in a no-load, torque-free first engine operating condition (T = 0 Nm) and in a loaded, torque-loaded second engine operating condition with a motor torque of at least 0.5 Nm, for which in each case the electric current consumption I of the electric motor and the engine speed n at a constant electrical reference voltage U soll , preferably 13 volts, is determined in the transmitter. For measuring the electrical voltage U mess and the electrical current I is the transmitter with a power supply to the electric motor on the housing 1 provided electrical connection connected.

Zur Bestimmung der charakteristischen Motorkennlinie eines Elektromotors sind somit folgende Verfahrensschritte erforderlich:

  • – Messen der elektrischen Spannung Umess und des elektrischen Stroms I am Elektroanschluss des Elektromotors,
  • – Erfassen der Rotorposition mittels der Induktionsspule 2 anhand von inkrementalen Winkelinformationen,
  • – Analysieren der elektrischen Spannung Umess, des elektrischen Stroms I und der Rotorposition mittels der Auswerteelektronik,
  • – Berechnen der Rotorbeschleunigung ω . mittels der Auswerteelektronik anhand der durch die Induktionsspule 2 erfassten Winkelinformationen des drehenden Rotors,
  • – Berechnen des Motordrehmomentes T aus der Anlaufbeschleunigung ω . und dem empirisch bestimmten polaren Trägheitsmomentes Θ des Elektromotors,
  • – Berechnen der Drehzahl n mit Hilfe der Auswerteelektronik anhand dem Verhältnis der Referenzspannung Usoll zur gemessenen elektrischen Spannung Umess und der berechneten Rotorbeschleunigung ω ., wobei ein Erfassen der elektrischen Spannung Umess und der Rotorbeschleunigung ω . zur Bestimmung der Motordrehzahl n während des lastfreien Motorbetriebs (erster Motorbetriebszustand) als auch unter Motorlast (zweiter Motorbetriebszustand) erfolgt.
For determining the characteristic motor characteristic of an electric motor, the following method steps are therefore required:
  • Measuring the electrical voltage U mess and the electric current I at the electrical connection of the electric motor,
  • - Detecting the rotor position by means of the induction coil 2 based on incremental angle information,
  • Analyzing the electrical voltage U mess , the electric current I and the rotor position by means of the evaluation electronics,
  • - Calculate the rotor acceleration ω. by means of the evaluation by means of the induction coil 2 detected angular information of the rotating rotor,
  • - Calculating the motor torque T from the starting acceleration ω. and the empirically determined polar moment of inertia Θ of the electric motor,
  • Calculating the rotational speed n by means of the evaluation electronics on the basis of the ratio of the reference voltage U soll to the measured electrical voltage U mess and the calculated rotor acceleration ω., Wherein detecting the electrical voltage U mess and the rotor acceleration ω. for determining the engine speed n during no-load engine operation (first engine operating condition) and under engine load (second engine operation condition).

Schließlich erfolgt eine Dokumentation der Parameter Motorstrom I und Motordrehzahl n für beide Motorbetriebszustände I1, n1, I2, n2 auf einem Etikett 3 am Gehäuse 2, sodass nach Einbau des Elektromotors in das Bremssystem zur nachfolgenden Kalibrierung der Kraftfahrzeugbremsanlage die charakteristischen Motorparameter auf einfache Weise zur Verfügung stehen.Finally, a documentation of the parameters motor current I and motor speed n for both engine operating states I1, n1, I2, n2 is carried out on a label 3 on the housing 2 so that after installation of the electric motor in the brake system for the subsequent calibration of the motor vehicle brake system, the characteristic motor parameters are available in a simple manner.

Das Diagramm nach 2 verdeutlicht die mit Hilfe der Induktionsspule 2 und der nicht abgebildeten Auswerteelektronik für den Elektromotor nach 1 ermittelten charakteristischen Motorkennlinien (Drehzahl- und Stromkennlinie), die sich innerhalb den strichliniert dargestellten Toleranzband (Grenzkurven) bewegen. In der gewählten Darstellung des Diagramms ist entlang der Abszisse das Motordrehmoment T und entlang der Ordinate der elektrische Strom I und die Motordrehzahl n aufgetragen. Im vorliegenden Beispiel beträgt bei einer konstanten elektrischen Referenzspannung Usoll = 13 V im lastlosen und damit drehmomentfreien ersten Motorbetriebszustand (T = 0 Nm) die Motordrehzahl n1 = 9000 U/min und die elektrische Stromstärke I1 = 2A, während sich unter Last im zweiten Motorbetriebszustand bei einem Motordrehmoment T = 0,55 Nm als weitere Parameter eine elektrische Stromaufnahme I2 = 42 A und eine Motordrehzahl n2 = 3000 U/min ergeben. Diese charakteristischen Parameter ermöglichen sodann eine vergleichsweise einfache Kalibrierung des Bremssystems nach Einbau des dargestellten Elektromotors in das Kraftfahrzeugbremssystem.The diagram after 2 clarifies the with the help of the induction coil 2 and the not shown evaluation for the electric motor after 1 Determined characteristic motor characteristics (speed and current characteristic), which move within the tolerance band (limit curves) shown in dashed lines. In the selected representation of the diagram, the abscissa represents the engine torque T and the ordinate represents the electric current I and the engine speed n. In the present example, at a constant electrical reference voltage is U soll = 13 V in no-load and torque-free first engine operating condition (T = 0 Nm), the engine speed N1 = 9000 U / min and the electric current I1 = 2A, while under load in the second engine operating condition at an engine torque T = 0.55 Nm as additional parameters an electrical current consumption I2 = 42 A and an engine speed n2 = 3000 rev / min. These characteristic parameters then allow a comparatively simple calibration of the brake system after installation of the illustrated electric motor in the motor vehicle brake system.

ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • DE 10355239 A1 [0002] DE 10355239 A1 [0002]

Claims (10)

Elektromotor, insbesondere für schlupfgeregelte Kraftfahrzeugbremsanlagen, bestehend aus einem mit einer Motorwelle verbundenen Rotor, dessen Motorwelle im Gehäuse eines Stators gelagert ist, wobei zur Kommutierung der mit Wicklungen versehene Rotor vorzugsweise einen Kommutator mit mehreren Kommutatorlamellen und das Gehäuse vorzugsweise mehrere im Gehäuse fixierte, die Kommutatorlamellen kontaktierende Bürsten umfasst, dadurch gekennzeichnet, dass zur Ermittlung wenigstens einer für den Elektromotor charakteristischen Motorkennlinie ein mobiles sensorisches Mittel am Gehäuse (1) kurzzeitig angebracht ist.Electric motor, in particular for slip-controlled motor vehicle brake systems, consisting of a rotor connected to a motor shaft whose motor shaft is mounted in the housing of a stator, wherein for commutation of the rotor provided with windings preferably a commutator with a plurality of commutator and the housing preferably a plurality fixed in the housing, the commutator comprises contacting brushes, characterized in that for determining at least one motor characteristic characteristic of the motor, a mobile sensory means on the housing ( 1 ) is attached for a short time. Elektromotor nach Anspruch 1, dadurch gekennzeichnet, dass als sensorisches Mittel eine Induktionsspule (2) am Außenumfang des Gehäuses (1) positioniert ist, wodurch zur Bestimmung der Motordrehzahl (n) inkrementale Winkelinformationen bezüglich des drehenden Rotors für eine kurze Zeitdauer mittels der Induktionsspule (2) erfassbar sind.Electric motor according to claim 1, characterized in that as the sensory means an induction coil ( 2 ) on the outer circumference of the housing ( 1 ), whereby for determining the engine speed (n) incremental angular information with respect to the rotating rotor for a short period of time by means of the induction coil ( 2 ) are detectable. Elektromotor nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zur Bestimmung der Motordrehzahl (n) eine Auswerteelektronik mit der Induktionsspule (2) verbunden ist, wobei die Motordrehzahl (n) in der Auswerteelektronik anhand dem Verhältnis der Referenzspannung (Usoll) zur gemessenen elektrischen Spannung (Umess) und anhand der Rotorbeschleunigung (ω .) nach der Formel
Figure 00060001
errechenbar ist.Electric motor according to claim 1 or 2, characterized in that for determining the engine speed (n) an evaluation with the induction coil ( 2 ), wherein the engine speed (n) in the transmitter based on the ratio of the reference voltage (U soll ) to the measured electrical voltage (U mess ) and based on the rotor acceleration (ω.) According to the formula
Figure 00060001
is calculable. Elektromotor nach Anspruch 3, dadurch gekennzeichnet, dass mit Hilfe der durch die Induktionsspule (2) erfassten Rotorbeschleunigung (ω .), unter Berücksichtigung des vorzugsweise empirisch ermittelten polaren Trägheitsmoments (Θ) des Rotors, das Motordrehmoment (T) in der Auswerteelektronik nach der Formel T = Θ·ω . berechenbar ist.Electric motor according to claim 3, characterized in that by means of the induction coil ( 2 ) detected rotor acceleration (ω.), Taking into account the preferably empirically determined polar moment of inertia (Θ) of the rotor, the motor torque (T) in the transmitter according to the formula T = Θ · ω. is calculable. Elektromotor nach Anspruch 3, dadurch gekennzeichnet, dass zur Ermittlung der charakteristischen Motorkennlinie sowohl in einem lastlosen, drehmomentfreien ersten Motorbetriebszustand (T = 0 Nm) als auch in einem belasteten, drehmomentbeaufschlagten zweiten Motorbetriebszustand (T > 0,5 Nm) jeweils die elektrische Stromaufnahme (I) des Elektromotors und die Motordrehzahl (n) bei einer konstanten elektrische Referenzspannung (Usoll), vorzugsweise 13 Volt, mittels der Auswerteelektronik erfassbar ist.Electric motor according to claim 3, characterized in that for determining the characteristic motor characteristic both in a no-load, torque-free first engine operating condition (T = 0 Nm) and in a loaded, torque-loaded second engine operating condition (T> 0.5 Nm) each of the electrical power consumption ( I) of the electric motor and the engine speed (n) at a constant electrical reference voltage (U soll ), preferably 13 volts, by means of the evaluation is detected. Elektromotor nach Anspruch 3, dadurch gekennzeichnet, dass die Auswerteelektronik zur Messung der elektrischen Spannung (Umess) und des elektrischen Stroms (I) mit einem zur Energieversorgung des Elektromotors am Gehäuse (1) vorgesehenen Elektroanschluss verbunden ist.Electric motor according to claim 3, characterized in that the evaluation electronics for measuring the electrical voltage (U mess ) and the electrical current (I) with a power supply to the electric motor on the housing ( 1 ) provided electrical connection is connected. Elektromotor nach Anspruch 5, dadurch gekennzeichnet, dass die während des ersten und zweiten Motorbetriebzustands ermittelten Parameter zur elektrischen Stromaufnahme (I) und Motordrehzahl (n) auf dem Gehäuse (1), vorzugsweise auf einem Etikett (3) dokumentiert sind.Electric motor according to Claim 5, characterized in that the parameters for the electrical current consumption (I) and the engine speed (n) determined on the housing during the first and second engine operating states ( 1 ), preferably on a label ( 3 ) are documented. Verfahren zur Bestimmung der charakteristischen Motorkennlinie eines Elektromotors nach einem der vorangegangenen Ansprüche 1 bis 7, gekennzeichnet durch die nachfolgenden Merkmale: – Messen der elektrischen Spannung (Umess) und des elektrischen Stroms (I) am Elektroanschluss des Elektromotors, – Erfassen der Rotorposition mittels der Induktionsspule (2) anhand von inkrementalen Winkelinformationen, – Analysieren der elektrischen Spannung (Umess), des elektrischen Stroms (I) und der Rotorposition mittels der Auswerteelektronik, – Berechnen der Rotorbeschleunigung (ω .) mittels der Auswerteelektronik anhand der durch die Induktionsspule (2) erfassten Winkelinformationen des drehenden Rotors, – Berechnen des Motordrehmomentes (T) aus der Anlaufbeschleunigung (ω .) und dem empirisch bestimmten polaren Trägheitsmomentes (Θ) des Elektromotors, – Berechnen der Drehzahl (n) mit Hilfe der Auswerteelektronik anhand dem Verhältnis der Referenzspannung (Usoll) zur gemessenen elektrischen Spannung (Umess) und der berechneten Rotorbeschleunigung (ω .).Method for determining the characteristic motor characteristic curve of an electric motor according to one of the preceding claims 1 to 7, characterized by the following features: - measuring the electrical voltage (U mess ) and the electric current (I) at the electrical connection of the electric motor, - detecting the rotor position by means of Induction coil ( 2 ) on the basis of incremental angle information, - analyzing the electrical voltage (U mess ), the electrical current (I) and the rotor position by means of the evaluation, - calculating the rotor acceleration (ω.) By means of the evaluation by means of the induction coil ( 2 ) detected angular information of the rotating rotor, - Calculating the motor torque (T) from the starting acceleration (ω) and the empirically determined polar moment of inertia (Θ) of the electric motor, - Calculating the speed (n) by means of the evaluation using the ratio of the reference voltage ( U soll ) to the measured electrical voltage (U mess ) and the calculated rotor acceleration (ω.). Verfahren nach Anspruch 8, gekennzeichnet durch nachfolgende Merkmale: – Erfassen der elektrischen Spannung (Umess) und der Rotorbeschleunigung (ω .) zur Bestimmung der Motordrehzahl (n) während des lastfreien Motorbetriebs (erster Motorbetriebszustand), – Erfassung der elektrischen Spannung (Umess) und der Rotorbeschleunigung (ω .) zur Bestimmung der Motordrehzahl (n) unter Motorlast (zweiter Motorbetriebszustand).Method according to Claim 8, characterized by the following features: detecting the electrical voltage (U mess ) and the rotor acceleration (ω) for determining the engine speed (n) during no-load engine operation (first engine operating condition), detecting the electrical voltage (U mess ) and the rotor acceleration (ω) for determining the engine speed (n) under engine load (second engine operating condition). Verfahren nach Anspruch 9, gekennzeichnet durch eine schriftliche Dokumentation der Parameter Strom (I) und Motordrehzahl (n) für beide Motorbetriebszustände (I1, n1, I2, n2) vorzugsweise auf einem Etikett (3) am Gehäuse (1).Method according to Claim 9, characterized by written documentation of the parameters current (I) and engine speed (n) for both engine operating states (I1, N1, I2, N2) preferably on a label ( 3 ) on the housing ( 1 ).
DE102010041182A 2010-09-22 2010-09-22 Electromotor i.e. direct-current motor, for slip-controlled motor car brake assembly, has motor shaft supported in housing of stator, and sensory unit temporarily mounted on housing for determining motor characteristic curve of electromotor Withdrawn DE102010041182A1 (en)

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DE102010041182A DE102010041182A1 (en) 2010-09-22 2010-09-22 Electromotor i.e. direct-current motor, for slip-controlled motor car brake assembly, has motor shaft supported in housing of stator, and sensory unit temporarily mounted on housing for determining motor characteristic curve of electromotor

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Citations (1)

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Publication number Priority date Publication date Assignee Title
DE10355239A1 (en) 2003-07-25 2005-03-03 Continental Teves Ag & Co. Ohg Slip-controlled braking system for road vehicle estimates pressure in brake circuits and has PWM control of electric motor driving hydraulic pump pressurizing brake circuits

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10355239A1 (en) 2003-07-25 2005-03-03 Continental Teves Ag & Co. Ohg Slip-controlled braking system for road vehicle estimates pressure in brake circuits and has PWM control of electric motor driving hydraulic pump pressurizing brake circuits

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