EP1327761A2 - Procédé pour vérifier le fonctionnement de deux capteurs - Google Patents

Procédé pour vérifier le fonctionnement de deux capteurs Download PDF

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Publication number
EP1327761A2
EP1327761A2 EP02025771A EP02025771A EP1327761A2 EP 1327761 A2 EP1327761 A2 EP 1327761A2 EP 02025771 A EP02025771 A EP 02025771A EP 02025771 A EP02025771 A EP 02025771A EP 1327761 A2 EP1327761 A2 EP 1327761A2
Authority
EP
European Patent Office
Prior art keywords
determined
encoder
transmitter
angular position
absolute angle
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.)
Granted
Application number
EP02025771A
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German (de)
English (en)
Other versions
EP1327761A3 (fr
EP1327761B1 (fr
Inventor
Ingolf Rupp
Michael Lehner
Elmar Pietsch
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
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1327761A2 publication Critical patent/EP1327761A2/fr
Publication of EP1327761A3 publication Critical patent/EP1327761A3/fr
Application granted granted Critical
Publication of EP1327761B1 publication Critical patent/EP1327761B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/06—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of circuit-makers or -breakers, or pick-up devices adapted to sense particular points of the timing cycle
    • F02P7/077—Circuits therefor, e.g. pulse generators
    • F02P7/0775—Electronical verniers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
    • F02D2400/08—Redundant elements, e.g. two sensors for measuring the same parameter

Definitions

  • the invention relates to a method for checking the functionality of a first and a second encoder, with which the angular position independently a wave can be determined or with which the Angular positions of two shafts can be determined, their rotary movements with one another are linked.
  • the company can take appropriate regulatory measures the internal combustion engine can then be improved overall.
  • the extensive Functionality of modern engine controls also affects the design of individual ones Engine components.
  • the battery, the starter and the alternator can be dimensioned smaller if a quick start faster synchronization is feasible.
  • By detecting the direction of rotation can be avoided, so that the intake manifold and the Throttle valve must meet correspondingly lower requirements.
  • a sensor wheel with sixty is often used to record the speed minus two (60 - 2) angle marks in the form of teeth.
  • the encoder wheel is firmly connected to the crankshaft and rotates with it.
  • the angle marks are scanned with the help of a sensor, which is usually inductive, magnetoresistive or works using the reverb effect.
  • the current angular position can with the help of an absolute angle encoder on the camshaft or be determined on the crankshaft.
  • Such an absolute angle encoder for example described in German Offenlegungsschrift 197 22 016.
  • the angular position of the shaft assigned to this is determined. Also for Time t1 is the angular position of the second encoder shaft assigned to the second encoder.
  • the angular position of the first encoder assigned shaft is determined.
  • the angular position of the first encoder assigned shaft is determined.
  • the angular position of the first encoder assigned shaft is determined.
  • the angular position of the first encoder assigned shaft is determined.
  • the angular position of the first encoder assigned shaft determines the angular position with the help of the second encoder of the shaft assigned to the second encoder.
  • the measurement results of the two sensors are therefore proposed to check based on the measurement results of the other encoder.
  • To two angular ranges are compared with each other, but at the same time independently from each other with the help of the two donors.
  • the angular ranges are determined in each case by the difference from that recorded at time t2 Angular position and the angular position detected at time t1 becomes. This can cause at least some of the systematic errors of each Encoder are eliminated.
  • By simply comparing the two so determined Angular ranges can initially only be determined whether at least one of the both encoders is defective.
  • a tolerance range determine the difference between the two difference signals, i.e. between the angular ranges determined with the help of the two encoders may, without the functionality of one of the two encoders being recognized as faulty becomes.
  • the functionality at least one of the two sensors is only recognized as faulty, if the two difference signals differ by more than a predetermined tolerance value differ. If the two sensors work on different shafts, so must the gear ratio when comparing the two difference signals between the rotary movements of the two shafts are taken into account.
  • the method according to the invention can not only be determined whether the functionality at least one of the two sensors is faulty, but which of the two sensors is defective is.
  • the signals detected by the two sensors and / or those from These signals determined independently of each other based on at least checked a plausibility criterion.
  • This plausibility check can always independent of the comparison of the two difference signals, or only if it has been recognized that the functionality is at least one of the two sensors is faulty.
  • An encoder is recognized as defective if the signals it detects or the quantities determined from these signals do not adequately meet the corresponding plausibility criterion. This can also apply to both donors at the same time.
  • plausibility criteria listed above as examples can be checked and additional plausibility criteria can also be checked can be.
  • additional plausibility criteria can be checked if at least one encoder has been identified as defective and the Comparison of the difference signals is repeated to verify this result.
  • the absolute angle encoder is 2 arranged on the camshaft 1 of the internal combustion engine.
  • the measured value acquisition of the absolute angle encoder 2 is based here on the Hall effect and one magnetoresistive effect.
  • the speed sensor 4 is on the crankshaft 3 Internal combustion engine arranged.
  • a sensor wheel 3a is fixed to the crankshaft 3 connected so that it rotates together with this. It covers sixty minus two (60 - 2) teeth.
  • An inductive sensor, which is used in each Tooth flank of the sensor wheel 3a emits a signal.
  • the output signal 2 'of the absolute angle encoder 2 is a first processing circuit 5 supplied while the output signal 4 'of the speed sensor 4 is fed to a second processing circuit 6.
  • the output signals 2 " and 4 "of the processing circuits 5 and 6 are fed to a microcontroller 7, the component together with the processing circuits 5 and 6 of a control unit 8.
  • the Speed sensor 4 i.e. due to the crankshaft (KW) signal detected by it, a first KW angle is determined and stored (method step 11).
  • a first KW angle is determined and stored (method step 11).
  • the absolute angle encoder is used 2 a first camshaft (NW) angle is determined and stored (method step 21). To do this, the signal detected by the absolute angle encoder 2 must be corresponding can be converted. In the same way become one another second time t2 or at a further second motor position second KW angle and a second NW angle determined and stored (process steps 12 and 22).
  • the difference value ⁇ KW represents the angular range detected by the speed sensor, which the crankshaft has traveled between the measuring times t1 and t2 or the corresponding measuring positions.
  • the difference value .DELTA.NW represents the angular range detected by the absolute angle encoder, which the camshaft has traveled between the measuring times t1 and t2 or the corresponding measuring positions
  • an output signal 31 is generated this indicates that both encoders - speed encoder and absolute angle encoder - are working are. Otherwise, i.e. if the difference values ⁇ KW and ⁇ NW taking into account the gear ratio of 0.5 by more than that differentiate predetermined tolerance value TOL, it is recognized that at least one of the two encoders is defective.
  • a plausibility value is determined for each sensor in the exemplary embodiment described here (method steps 41 and 42).
  • the plausibility value for the speed encoder is referred to below as P KW
  • the plausibility value for the absolute angle encoder is referred to as P NW .
  • the signal from the encoder concerned or a variable derived from this signal is compared with a plausibility criterion.
  • a plausibility criterion for the speed sensor signal it should be mentioned here by way of example that a reference mark gap of two teeth is recognized after every fifty-eight teeth.
  • a possible plausibility criterion for the absolute angle encoder signal is that this signal rises monotonically from approx. 0 ° to approx. 360 ° and a jump to 0 ° occurs at 360 °.
  • the plausibility value indicates how well the corresponding plausibility criterion is met.
  • the plausibility values P KW and P NW determined in method steps 41 and 42 are compared with one another in method steps 50, 60 and 70. If P KW > P NW (method step 50), the absolute angle encoder is recognized as defective and a corresponding output signal 51 is generated. Accordingly, the rotation rate encoder is recognized as defective if P KW ⁇ P NW (method step 60). In this case too, a corresponding output signal 61 is generated. If the plausibility values P KW and P NW are the same (method step 70), both sensors are recognized as defective. In the present exemplary embodiment, however, a corresponding output signal 71 is only generated when the method steps 11 to 70 have been repeated three times and P KW and P NW were the same in all three cases.
  • the method according to the invention also can be designed such that the output signals 51 and 61 are only generated, if process steps 11 to 50 or 60 are repeated with the same result have been gone through.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
EP20020025771 2002-01-15 2002-11-16 Procédé pour vérifier le fonctionnement de deux capteurs Expired - Lifetime EP1327761B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002101166 DE10201166A1 (de) 2002-01-15 2002-01-15 Verfahren zum Überprüfen der Funktionsfähigkeit zweier Geber
DE10201166 2002-01-15

Publications (3)

Publication Number Publication Date
EP1327761A2 true EP1327761A2 (fr) 2003-07-16
EP1327761A3 EP1327761A3 (fr) 2005-08-17
EP1327761B1 EP1327761B1 (fr) 2008-02-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020025771 Expired - Lifetime EP1327761B1 (fr) 2002-01-15 2002-11-16 Procédé pour vérifier le fonctionnement de deux capteurs

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EP (1) EP1327761B1 (fr)
DE (2) DE10201166A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011121066A1 (fr) * 2010-03-31 2011-10-06 Robert Bosch Gmbh Ensemble circuit et procédé pour évaluer des signaux produits par un capteur de vilebrequin et par un capteur d'arbre à cames d'un moteur à combustion interne
DE102019201730A1 (de) * 2019-02-11 2020-08-13 Robert Bosch Gmbh Verfahren zum Bestimmen einer Drehzahl einer Brennkraftmaschine
CN112682205A (zh) * 2020-12-31 2021-04-20 清华大学 发动机转速控制方法、电控设备及发动机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013205618B3 (de) 2013-03-28 2014-03-27 Mtu Friedrichshafen Gmbh Verfahren und Vorrichtung zum redundanten Regeln der Drehzahl einer Brennkraftmaschine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19722016A1 (de) 1997-05-27 1998-12-03 Bosch Gmbh Robert Anordnung zur berührungslosen Drehwinkelerfassung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2915614B2 (ja) * 1991-04-18 1999-07-05 三菱重工業株式会社 内燃機関の異常検知装置
DE4313331A1 (de) * 1993-04-23 1994-10-27 Bosch Gmbh Robert Verfahren zur Auslösung von zur Winkellage eines rotierenden Teils abhängigen Vorgängen
US5365904A (en) * 1993-07-23 1994-11-22 Caterpillar Inc. Redundant speed sensor for engine control
JPH08105349A (ja) * 1994-10-06 1996-04-23 Nissan Motor Co Ltd ディーゼルエンジンの燃料噴射量制御装置
JPH09222044A (ja) * 1996-02-19 1997-08-26 Mitsubishi Electric Corp 内燃機関の燃料制御装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19722016A1 (de) 1997-05-27 1998-12-03 Bosch Gmbh Robert Anordnung zur berührungslosen Drehwinkelerfassung

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011121066A1 (fr) * 2010-03-31 2011-10-06 Robert Bosch Gmbh Ensemble circuit et procédé pour évaluer des signaux produits par un capteur de vilebrequin et par un capteur d'arbre à cames d'un moteur à combustion interne
CN102822484A (zh) * 2010-03-31 2012-12-12 罗伯特·博世有限公司 用于分析处理内燃机的曲轴传感器和凸轮轴传感器的信号的电路装置和方法
CN102822484B (zh) * 2010-03-31 2015-11-25 罗伯特·博世有限公司 用于分析处理内燃机的曲轴传感器和凸轮轴传感器的信号的电路装置和方法
US9575933B2 (en) 2010-03-31 2017-02-21 Robert Bosch Gmbh Circuit arrangement and method for evaluating signals of a crankshaft sensor and of a camshaft sensor of an internal combustion engine
DE102019201730A1 (de) * 2019-02-11 2020-08-13 Robert Bosch Gmbh Verfahren zum Bestimmen einer Drehzahl einer Brennkraftmaschine
CN112682205A (zh) * 2020-12-31 2021-04-20 清华大学 发动机转速控制方法、电控设备及发动机
CN112682205B (zh) * 2020-12-31 2022-02-08 清华大学 发动机转速控制方法、电控设备及发动机

Also Published As

Publication number Publication date
DE50211733D1 (de) 2008-04-03
EP1327761A3 (fr) 2005-08-17
DE10201166A1 (de) 2003-07-24
EP1327761B1 (fr) 2008-02-20

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