WO2012107144A1 - Procédé de diagnostic par puce résolveur, dispositif de diagnostic par puce résolveur et produit de programme informatique - Google Patents

Procédé de diagnostic par puce résolveur, dispositif de diagnostic par puce résolveur et produit de programme informatique Download PDF

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Publication number
WO2012107144A1
WO2012107144A1 PCT/EP2011/074129 EP2011074129W WO2012107144A1 WO 2012107144 A1 WO2012107144 A1 WO 2012107144A1 EP 2011074129 W EP2011074129 W EP 2011074129W WO 2012107144 A1 WO2012107144 A1 WO 2012107144A1
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WO
WIPO (PCT)
Prior art keywords
resolver chip
resolver
difference
chip output
frequency
Prior art date
Application number
PCT/EP2011/074129
Other languages
German (de)
English (en)
Inventor
Katharina Schuster
Martin Wirth
Daniel Raichle
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 WO2012107144A1 publication Critical patent/WO2012107144A1/fr

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/10—Calibration or testing
    • H03M1/1071—Measuring or testing
    • H03M1/1076—Detection or location of converter hardware failure, e.g. power supply failure, open or short circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/64—Analogue/digital converters with intermediate conversion to phase of sinusoidal or similar periodical signals
    • H03M1/645—Analogue/digital converters with intermediate conversion to phase of sinusoidal or similar periodical signals for position encoding, e.g. using resolvers or synchros

Definitions

  • the present invention relates to a method for resolver chip diagnosis, a
  • Resolver chip diagnostic device and a computer program for performing a resolver chip diagnosis.
  • Resolver or resolver chips serve to convert an angular position of a rotor into an electrical variable.
  • Resolver or resolver chips are used here to determine positions of control elements, such as valves, or to record the position of a rotor of an electric motor.
  • resolvers or resolver chips are used in modern hybrid and / or electric vehicles in order to determine the curvature and / or the rotational speed of the rotor of the electric machine of such a vehicle.
  • Hybrid vehicle is an important size, which is needed to control the electric machine of the electric and / or hybrid vehicle. If the position of the rotor can not be determined or can only be determined incorrectly, this will lead to incorrect control of the rotor
  • Electric machine of the electric and / or hybrid vehicle This is on the one hand
  • DE 699 32 980 T2 discloses a device for resolver or resolver chip diagnosis, which has a separate hardware circuit in order to read in addition to the angle signal of the resolver and the sine or cosine signals.
  • the device calculates the sum of squares of these sine cosine signals and compares the sum of squares with a threshold. If the sum of squares deviates too much from this threshold, a resolver chip error is detected.
  • the present invention provides a method for resolver chip diagnostics.
  • a method includes the steps of providing a resolver chip output, providing a resolver chip output frequency, and diagnosing a
  • Resolver chip error based on resolver chip output and resolver chip output frequency.
  • the present invention discloses a resolver chip diagnostic apparatus having detecting means for receiving the resolver chip output and the
  • Resolver chip output frequency and for diagnosing a resolver chip error based on the resolver chip output and the resolver chip output frequency.
  • the present invention discloses a computer program product which has information executable by a computer unit and which is designed to carry out a method according to the invention.
  • the insight underlying the present invention is that there is a direct relationship between the resolver chip output and the resolver chip output frequency which can be used to diagnose a resolver chip error.
  • the idea underlying the present invention is now to take this knowledge into account and to carry out a diagnosis of a resolver chip error based on the resolver chip output signal and the resolver chip output frequency. Performing resolver chip diagnostics based on the readings provided by the resolver chip enables effective diagnostics of the resolver chip.
  • the diagnosis of Resolver chips can be carried out without having to include further variables of the electric motor or of the electronics driving the electric motor.
  • the method disclosed by the present invention provides, in particular by dispensing with the integration of other sizes of the electric motor or the electronics driving the electric motor, a simple and effective way to Resolver or
  • diagnosing the resolver chip error comprises the steps of determining the frequency of the resolver chip output, forming a first difference of the frequency of the resolver chip output and the resolver chip output frequency, and diagnosing a resolver chip error if the first difference exceeds a first threshold. on.
  • the resolver chip output signal is a signal that includes information about the current angle of the rotor of the electric machine.
  • the Resolverchip- output signal from the resolver chip as an analog signal, which represents the current position of the rotor of the electric machine as an electrical voltage, or as a digital signal, which represents the current position of the rotor of the electric machine as a binary coded signal , Since the resolver chip output signal represents the actual angle of the rotor of the electric machine, a frequency or rotational speed for the rotor can be determined from two or more successively recorded resolver chip output signal values and the time between the sampling instants
  • the value indicated by the resolver chip output is between 0 and 360 degrees.
  • the frequency of the resolver chip output results from the angle change divided by 360 ° in relation to the time in which the angle change has occurred.
  • Form to compare this calculated frequency with the Resolverchip supplied Resolverchip- output frequency represents the difference formation.
  • Forming the difference between the calculated frequency and the resolver chip output frequency we obtain a difference of. For a properly functioning resolver or resolver chip Zero. If the difference between the calculated frequency and the resolver chip output frequency deviates from zero by more than a specific threshold value, this indicates an error in the resolver chip or the electric motor system.
  • determining the frequency of the resolver chip output signal comprises determining the frequency of at least one track of the resolver chip output signal or determining the frequency of an angle signal of the resolver chip output signal.
  • Resolver chips calculates an angle signal from internal measured variables which corresponds to the value to be detected.
  • the second type of resolver chip provides a sine and a cosine signal. From these sine and cosine signals, the angle to be detected can be calculated by means of an arctangent or arctangent2 function.
  • diagnosing the resolver chip error further comprises the steps of forming a first virtual node from the resolver chip output frequency at a first time, forming a second difference of the first virtual word and the token indicating the resolver chip output at the first time, Forming a second virtual triangle from the resolver chip output frequency at a second time, forming a third difference of the second virtual triangle and the angle that the resolver chip output signal indicates at the second time,
  • forming a virtual worm further comprises
  • diagnosing the resolver chip error further comprises the steps of storing a first angle of the resolver chip output and a first resolver chip output frequency at a fourth time, storing a second angle of the resolver chip output and a second resolver chip output frequency at a fifth time; Forming a fifth difference between the first stored frequency and the second stored frequency and forming a sixth difference between the first stored angle and the second one
  • Resolver or Resolverchip can not only in a lack of
  • Implementations of the invention also include not explicitly mentioned combinations of features of the invention described above or below with respect to the exemplary embodiments.
  • the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention.
  • Fig. 1 is a flowchart of an embodiment of an inventive
  • Fig. 2 is a block diagram of an embodiment of an inventive
  • Resolverchipdiagnosevortechnische 3 is a block diagram of another embodiment of a resolver chip diagnostic device according to the invention.
  • FIG. 4 is a block diagram of another embodiment of a device according to the invention.
  • Fig. 5 is a block diagram of yet another embodiment
  • FIG. 1 shows a flow chart of an embodiment of an inventive device
  • reference numeral S1 represents the step of providing a resolver chip output signal S R. Furthermore, a resolver chip output frequency F R is provided in a second step S2. In a third step S3, based on the resolver chip output signal S R and the resolver chip output frequency F R
  • the resolver chip output signal S R becomes exemplary in the example shown here
  • a signal of 0 volts represents an angle of 0 ° and a signal of 5 volts represents a value of 360 °.
  • the angles may also be controlled by other voltages, e.g. 0 volts to 12 volts or more.
  • an angle of 0 ° may be represented with the larger of the two voltages.
  • the two voltages e.g. 0 volts to 12 volts or more.
  • Resolver chip output signal S R are provided as a digital signal.
  • the resolver chip output signal S R can be provided directly from the resolver chip or can be provided by the resolver chip on a digital data bus, such as an SPI bus, PC bus or the like.
  • the Resolverchip- output frequency F R can be provided either as an analog signal, wherein a
  • the resolver chip output frequency F R such as the resolver chip output signal S R , may be provided as an analog signal with voltage levels other than 0 volts and 5 volts, or as a digital signal.
  • the resolver chip output signal S R and the resolver chip output frequency F R are provided both as an analog signal and as a digital signal.
  • resolver chip output signal S R and / or the resolver chip output frequency F R are provided as digital signals, then the angle which the resolver chip detects and / or the frequency which the resolver chip detects is possible
  • Embodiment shown with a bit width of 8-bit. In other possible
  • bit width for example, 16-bit or 32-bit is possible.
  • two different bit widths may be used for the
  • Resolver chip output signal S R and the resolver chip output frequency F R are used.
  • the diagnostics S3 of a resolver chip error is performed in one embodiment by the resolver chip output signal S R at the resolver chip output frequency F R in FIG
  • a frequency is determined from the resolver chip output signal S R , which frequency is then compared with the resolver chip output frequency F R. If the determined frequency differs by more than a certain threshold from the resolver chip output frequency F R , we recognize a resolver chip error F.
  • a virtual angle W V i, W V 2 is formed from the resolver chip output frequency F R. This value is then compared again with the angle which the resolver chip output signal S R indicates.
  • a resolver chip error F is also detected.
  • a resolver chip error F is detected if neither the resolver chip output signal S R nor the resolver chip output frequency F R change, although the
  • FIG. 2 shows a block diagram of an embodiment of an inventive
  • Resolver Chip Diagnostic Device 1 In Fig. 2, the reference numeral 1, a Resolverchipdiagnosevornchtung is shown.
  • the resolver chip diagnostic device 1 receives two signals, the resolver chip output signal S R and the resolver chip output frequency F R.
  • the resolver chip output signal S R and the resolver chip output frequency F R become one
  • Determination device 2 is provided which, based on the resolver chip
  • the determination device 2 is analogous
  • Detection device 2 is formed.
  • the determination device 2 is designed in conjunction with an analog resolver chip output signal S R and an analog resolver chip output frequency F R as an analog detection device 2.
  • the determining device 2 is considered a digital one
  • Detection device 2 for example as a microcontroller 2, executed.
  • the microcontroller 2 in conjunction with an analog resolver chip output signal S R and an analog resolver chip output frequency F R two analog / digital converter to convert the analog signals into digital signals and can further process.
  • the microcontroller 2 interfaces to a digital bus, for example an SPI bus, via which the microcontroller 2 receives the resolver chip output signal S R and the resolver chip output frequency F R.
  • FIG. 3 shows a block diagram of another embodiment of a resolver chip diagnostic device 1 according to the invention.
  • the resolver chip diagnostic device 1 shown in FIG. 3 largely corresponds to the one in FIG. 3
  • the detection device 2 of the Resolverchipdiagnosevornchtung 1 of FIG. 3 further comprises a frequency determining means 3, which forms a frequency F SR from the resolver chip output signal S R and this frequency F SR provides a differentiating means 4.
  • Differentiating means 4 calculates the difference Di of the formed frequency F SR and the resolver chip output frequency F R.
  • a fault diagnosis device 5 receives the difference Di and signals a resolver chip error F if the difference Di exceeds a first threshold value.
  • the frequency determining means 3 forms the frequency of the resolver chip output signal S R by the Frequency determining means 3 measures the time which elapses until the Resolverchip- output signal S R indicates a full 360 ° rotation of the motor.
  • the frequency determining means 3 measures this time starting at the moment when the resolver chip output signal S R indicates an angle of 0 ° and terminates the time measurement when the resolver chip output signal again indicates a value of 0 °.
  • the frequency determining device 3 can start the time measurement at an arbitrary angle and terminate the time measurement when this winkel is reached again. If the frequency determining device 3 has measured the time duration which the rotor requires according to the resolver chip output signal S R for a 360 ° rotation, the reciprocal of this time duration represents the frequency of the resolver chip.
  • the time can be detected in which the rotor sweeps over a different angle of 360 °.
  • This value may be, for example, a multiple of 360 °, for example 720 °. In a further embodiment, this angle may also be less than 360 °, for example 30 °. If one uses a smaller angle than 360 °, one obtains, while the rotor is executing one revolution, several measured values for the angle of the rotor and can react more quickly to changes in the angle of the rotor.
  • the time duration is specified in which the angle swept by the rotor is detected.
  • the first threshold value is 10% of the maximum frequency of the resolver chip output frequency F R.
  • the first threshold is less than 10%, in particular 1% to 0.01%, the maximum frequency of the resolver chip output frequency F R.
  • the maximum frequency of the resolver chip output frequency F R in the embodiment shown in FIG. 3 is up to 200 hertz or even 12,000 revolutions of the rotor per minute.
  • the maximum frequency of the resolver chip output frequency F R may be up to 1000 hertz or more.
  • FIG. 4 shows a block diagram of a further embodiment of a resolver chip diagnostic device 1 according to the invention.
  • the Resolverchipdiagnosevornchtung 1 shown in Fig. 4 also corresponds
  • the detection means 2 of the Resolverchipdiagnosevornchtung 1 of FIG. 4 a first Wnkel Strukturs gifted 6, which from the resolver chip output frequency F R at a first time a first virtual angle W V i forms.
  • the first virtual word W V i becomes a second one Difference-forming device 7 is supplied, which forms a second difference D 2 from the first virtual angle W V i and the angle of the resolver chip output signal S R at the first time.
  • the determination device 2 from FIG. 4 has a second one
  • Angle-forming device 10 which forms from the resolver chip output frequency F R at a second time a second virtual Wnkel W V 2.
  • the second virtual angle W V 2 is supplied to a third difference-forming device 11, which forms a third difference D 3 from the first virtual angle W V i and the value of the resolver chip output signal S R ZU at the second time.
  • the two differences D 2 and D 3 are fed to a fourth difference-forming device 12, which forms a fourth difference D 4 therefrom.
  • the fourth difference D 4 is fed to a second fault diagnosis device 18, which signals a resolver chip error F if the difference D 4 exceeds a specific second threshold value.
  • the second threshold is 5 °.
  • the second threshold value is 0 ° to 5 °, in particular 0.01 ° to 1 °.
  • FIG. 5 shows a block diagram of a further embodiment of a resolver chip diagnostic device 1 according to the invention.
  • the Resolverchipdiagnosevornchtung 1 shown in Fig. 4 also corresponds
  • the detection means 2 of the Resolverchipdiagnosevornchtung 1 of FIG. 5 a first memory 13 which a first resolver chip output frequency F R1 to a fourth and a second resolver chip output frequency F R2 stores at a fifth time.
  • the first resolver chip output frequency F R i and the second resolver chip output frequency F R2 are fed to a fifth differencing device 14, which forms the difference D 5 from the first resolver chip output frequency F R1 and the second resolver chip output frequency F R2 .
  • the determination device 2 of the resolver chip diagnostic device 1 from FIG. 5 has a second memory 15 which stores a first value of the resolver chip output signal S R to the fourth and a second angle W 2 of the resolver chip output signal S R at the fifth point in time.
  • the first angle and the second angle W 2 are fed to a sixth difference-forming device 16, which forms the difference D 6 from the first angle and the second angle W 2 .
  • the fifth and the sixth difference D 5 , D 6 are fed to a third fault diagnosis device 17, which signals an error if the fifth and the sixth difference D 5 , D 6 are equal to zero.
  • Detection device 2 the means of at least two of the detection devices 2 shown in Figures 3 to 5.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

L'invention concerne un procédé de diagnostic par puce résolveur, comprenant les étapes consistant à fournir (S1) un signal de sortie (SR) de puce résolveur, fournir (S2) une fréquence de sortie (FR) de puce résolveur et diagnostiquer (S3) une erreur de puce résolveur (F) sur la base du signal de sortie (SR) de puce résolveur et de la fréquence de sortie (FR) de puce résolveur. L'invention porte également sur un dispositif de diagnostic par puce résolveur et sur un produit de programme informatique.
PCT/EP2011/074129 2011-02-08 2011-12-28 Procédé de diagnostic par puce résolveur, dispositif de diagnostic par puce résolveur et produit de programme informatique WO2012107144A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011003758.6A DE102011003758B4 (de) 2011-02-08 2011-02-08 Verfahren zur Resolverchipdiagnose, Resolverchipdiagnosevorrichtung und Computerprogrammprodukt
DE102011003758.6 2011-02-08

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WO2012107144A1 true WO2012107144A1 (fr) 2012-08-16

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DE102014009715B4 (de) * 2014-06-28 2018-07-12 Audi Ag Verfahren zum Betreiben einer Antriebseinrichtung eines Kraftfahrzeugs sowie entsprechende Antriebseinrichtung

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Publication number Priority date Publication date Assignee Title
EP0040359A2 (fr) * 1980-05-14 1981-11-25 MTC Messtechnik und Optoelektronik AG Méthode et dispositif pour mesurer un angle
DE3834384A1 (de) * 1988-10-10 1990-04-12 Lenze Gmbh & Co Kg Aerzen Verfahren und schaltungsanordnung zur erzeugung von digitalen drehzahl- und drehwinkelinformationen mittels eines funktionsdrehmelders
WO1990015968A1 (fr) * 1989-06-19 1990-12-27 Siemens Aktiengesellschaft Procede et circuit pour generer une tension proportionnelle au regime avec un resolveur
JPH0972758A (ja) * 1995-09-08 1997-03-18 Toyota Motor Corp レゾルバ異常検出装置及び方法
EP0772025A1 (fr) * 1995-10-30 1997-05-07 Atsutoshi Goto Procédé de détection de phase, pour un système de détection de position
US5739659A (en) * 1994-06-06 1998-04-14 Nsk Ltd. Position detecting apparatus and method therefor
DE69708197T2 (de) * 1996-04-26 2002-08-29 Sagem Sa, Paris Vorrichtung zur Messung eines durch trigonometrische Funktionen dargestellten Parameters
EP1589323A2 (fr) * 2004-04-23 2005-10-26 Nsk Ltd Convertisseur résolveur-numérique
DE69932980T2 (de) 1998-08-05 2007-03-08 Toyota Jidosha K.K., Toyota Resolversignalverarbeitungssystem

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EP1333347B1 (fr) 2002-01-30 2007-12-05 Siemens VDO Automotive AG Méthode et dispositif pour déterminer une orientation rotative d'un moteur en fournissant un signal du resolver tiré de l'orientation rotative à un seul système de control utilisé pour déclencher et évaluer le signal du resolver, et un vehicule motorisé pourvu d'un tel dispositif
US7268710B1 (en) 2006-07-11 2007-09-11 Hiwin Mikrosystems Corp. Logic device for the transformation of the output of the RDC into series A-B pulses
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EP0040359A2 (fr) * 1980-05-14 1981-11-25 MTC Messtechnik und Optoelektronik AG Méthode et dispositif pour mesurer un angle
DE3834384A1 (de) * 1988-10-10 1990-04-12 Lenze Gmbh & Co Kg Aerzen Verfahren und schaltungsanordnung zur erzeugung von digitalen drehzahl- und drehwinkelinformationen mittels eines funktionsdrehmelders
WO1990015968A1 (fr) * 1989-06-19 1990-12-27 Siemens Aktiengesellschaft Procede et circuit pour generer une tension proportionnelle au regime avec un resolveur
US5739659A (en) * 1994-06-06 1998-04-14 Nsk Ltd. Position detecting apparatus and method therefor
JPH0972758A (ja) * 1995-09-08 1997-03-18 Toyota Motor Corp レゾルバ異常検出装置及び方法
EP0772025A1 (fr) * 1995-10-30 1997-05-07 Atsutoshi Goto Procédé de détection de phase, pour un système de détection de position
DE69708197T2 (de) * 1996-04-26 2002-08-29 Sagem Sa, Paris Vorrichtung zur Messung eines durch trigonometrische Funktionen dargestellten Parameters
DE69932980T2 (de) 1998-08-05 2007-03-08 Toyota Jidosha K.K., Toyota Resolversignalverarbeitungssystem
EP1589323A2 (fr) * 2004-04-23 2005-10-26 Nsk Ltd Convertisseur résolveur-numérique

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