WO2011088930A2 - Commande et procédé de diagnostic dans un microcontrôleur à plusieurs canaux - Google Patents

Commande et procédé de diagnostic dans un microcontrôleur à plusieurs canaux Download PDF

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Publication number
WO2011088930A2
WO2011088930A2 PCT/EP2010/069215 EP2010069215W WO2011088930A2 WO 2011088930 A2 WO2011088930 A2 WO 2011088930A2 EP 2010069215 W EP2010069215 W EP 2010069215W WO 2011088930 A2 WO2011088930 A2 WO 2011088930A2
Authority
WO
WIPO (PCT)
Prior art keywords
width modulation
pulse
pulse width
channel
diagnosis
Prior art date
Application number
PCT/EP2010/069215
Other languages
German (de)
English (en)
Other versions
WO2011088930A3 (fr
Inventor
Robert Murr
Original Assignee
Continental Automotive 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 Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Publication of WO2011088930A2 publication Critical patent/WO2011088930A2/fr
Publication of WO2011088930A3 publication Critical patent/WO2011088930A3/fr

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters

Definitions

  • the invention relates to a method for diagnosis in a multichannel microcontroller according to the preamble of patent claim 1 and to a controller for carrying out this method.
  • Powerful multi-channel microcontroller offer Periphe ⁇ riefunktionen for generating pulse-width modulated (PWM) signals, which are used for the control personnelster motors or lamps.
  • PWM pulse-width modulated
  • a microcontroller in an electronic control unit also known as an electronic control unit (ECU) generates, for example, up to 64 PWM connections (ports), which each load a load through a corresponding output driver.
  • the initial state of the driver should be made diagnosable by means of analogue / digital (A / D) converters.
  • the diagnosis is best carried out in the middle of the respective active PWM phase, that is with the driver switched on.
  • the on and off edges of the PWM connections are set at different times in order to minimize the electromagnetic compatibility (EMC) emissions of the entire ECU.
  • EMC electromagnetic compatibility
  • the PWM frequencies may be different, but they are usually an integer and even multiple of the fundamental frequency.
  • the object of the present invention is therefore to provide a method for the diagnosis in a multichannel microcontroller, which enables in a simple manner a permanently positioned diagnosis of all PWM channels and, if possible, without realizing an artefitration of the A / D converter diagnostic requirements.
  • diagnosis of all channels with mög ⁇ lichst little time lag should be able to be carried out with changing the pulse-pause ratio.
  • a pulse width modulation control unit which executes the pulse width modulation in ei ⁇ nem centered mode, each associated with a channel output driver for driving a respective channel associated load depending on the respective pulse width modulation phase and achieved with an A / D conversion system according to claim 1 and a controller for ei ⁇ nen multi-channel microcontroller according to claim 7.
  • a method for diagnosing in a multi-channel microcontroller with a pulse width modulation control unit that performs the pulse width modulation in a central ⁇ riert aligned mode one channel supplied arrange ⁇ th output driver for driving a associated with the respective channel load is dependent on the respective Pulsweitenmodu - Lation phase and provided with an A / D conversion system, in which the diagnosis is carried out for each channel in the middle of centent ⁇ oriented pulse width modulation phases by the A / D conversion system.
  • the center-aligned mode of the pulse width modulation control unit provides that the center of the active pulse width modulation phase of all channels is always at the same time, or always starts from the same point in time. This is the time at which the corresponding ⁇ de timer reaches the maximum value, and thus marks the point of inflection of the timer. So it stands at the center of an ever ⁇ the active time of a pulse or period. In other words, is at a center-aligned mode, the ac- tive time of the pulse (duty time) right in the middle of the Perio ⁇ de.
  • the diagnosis by the A / D converter system is performed sequentially for each channel with a small time offset and also does not change in time or in the order for each channel even with changing pulse-pause ratio of a pulse width modulation.
  • the diagnosis can be completed within, for example, 100 ps and lasts thus kür ⁇ zer than the minimum active pulse width modulation phase of for example 200 ps at a 400 Hz pulse width modulation or 400 ps at a 200 Hz pulse width modulation.
  • a method of ge ⁇ represents a fixedly positioned diagnosis of all pulse width modulation channels can be realized with the advantageously and by that allows a diagnosis for all channels at this time with a minimum time offset is thus according to the invention.
  • the diagnosis is always located centrally in the middle of the active pulse-side modulation phase and can therefore be used in particular in the diagnosis of a lamp load.
  • the erfindungsge ⁇ Permitted method utilizes the fact that thereby avoided a Jerusalemwendi ⁇ ge arbitration of the A / D converter diagnostic requirements is the. A waiver of such an arbitration was previously not possible.
  • a block selection control (sense-enable control) of the output drivers can be provided. In this way, a saving of A / D converter channels of the A / D converter system can take place.
  • grouping of the pulse side modulation with multiple channels can be provided, which can be provided with a time offset.
  • simultaneous switching edges can be equalized vorteilhafterwei ⁇ se.
  • the diagnostic requirements can be further equalized.
  • a systematically programmed low pulse-pause deviation can be introduced in the case of a same pulse-pause ratio provided for two channels within a pulse width modulation grouping. This can be reliably avoided at a lamp load whose respective deviation in the brightness are not recognizable, simultaneous input / output edges. A minimized EMC radiation can be achieved with it.
  • the output drivers can be coupled to one or more lamp drivers.
  • the lamp driver (s) may comprise an LED driver.
  • the invention also relates to a device for controlling a multichannel microcontroller with a pulse width modulation control unit, which executes the pulse width modulation in ei ⁇ nem centered mode, depending on a channel associated output driver for driving a respective channel associated load depending on the respective pulse width modulation phase and an a / D conversion system are provided where ⁇ with means for controlling the control of the diagnosis by the a / D conversion system such that the Diag ⁇ nose in the middle of the centered pulse-width-aligned carried lationsphasen.
  • a PWM controller is used in the manner in which the diagnosis of the microcontroller, to the Pulswei ⁇ width modulation in a center-aligned mode (cente- raligned mode) and executes the same time the diagnosis is carried out by the A / D converter system in the middle of centered ⁇ th pulse width modulation phases .
  • centered out ⁇ oriented mode (centeraligned mode) of Pulsweitenmodula- provides tion control unit that the center of the active pulse width modulation ⁇ phase of all channels is always the same time or always starts from the same point in time. This is the time at which the corresponding timer reaches the maximum value and thus marks the turning point of the timer. It also forms the middle of each active time
  • Pulse or period In other words, with In the centered mode, the active time of the pulse (duty-time) centers exactly in the middle of the period.
  • the diagnosis by the A / D converter system is performed sequentially for each channel with a small time offset and also does not change in time or in the order for each channel even with changing pulse-pause ratio of a pulse width modulation.
  • a block selection control (sense-enable control) of the output drivers can be provided.
  • the controller can have a systematic programming for generating a small pulse-pause deviation in the case of a same pulse-pause ratio provided for two channels within a pulse width modulation grouping. This can be reliably avoided at a lamp load whose respective deviation in the brightness are not recognizable, simultaneous input / output edges. Minimized EMC radiation can thus be achieved.
  • the invention also relates to a microcontroller which is designed to carry out the method according to the invention.
  • the microcontroller can be used to generate PWM signals, which are preferably used for the control of motors or lamps.
  • FIG. 1 is a diagram of the PWM phases and their diagnosis of eight PWM channels for controlling automotive lighting systems according to the present invention.
  • Fig. 2 is a simplified schematic representation of a pre ⁇ direction for carrying out the method according to the invention.
  • Fig. 1 illustrates the timing of 6 PWM channels and their diagnosis with A / D conversion times according to the present invention.
  • the counter value timer-count
  • the PWM phases are registered with the respective active PWM phase times for the various ⁇ which channels (1 ... 8) of a PWM-grouping.
  • channel 1 and channel 3 each have the same pulse-pause ratios, which can be minimally shifted, for example, by systematic software programming in order to avoid simultaneous input / output edges.
  • the PWM signals are centered (centered) so that the centers of the active phases of all channels are at the same time (t M itte).
  • This time is also the upper turning point of the count (timer-count) position (tc), which is shown here by dashed lines.
  • the relationship of the timer-count position to the programmed reference values (CC value) of the individual channels are also indicated.
  • Diagnosis by the A / D converter system is sequential for each channel with little skew and neither changes in time nor in order for each channel. The diagnosis can be concluded completed within, for example, 100 ps, and thus is shorter than the minimum ak ⁇ tive pulse width modulation phase of for example 200 ps at a 400 Hz pulse width modulation or 400 ps at a 200 Hz pulse width modulation.
  • FIG. 2 shows in a simplified and schematic representation of an inventive apparatus 10 for controlling a microcontroller (not shown) comprising a Pulswei ⁇ tenmodulations control unit 11, which performs the Puls shimmerenmodula ⁇ tion in a centered aligned mode depending NEN ei ⁇ associated with a channel output driver for driving an allocated to the respective channel output driver for driving a associated with the respective channel load depending on the pulse width modulation stage and an a / D conversion system 12.
  • means 13 provided ⁇ see for control of the diagnosis by the a / D conversion system 12 such that the diagnosis in the middle of the centered out ⁇ omnidirectional pulse width modulation phases.

Abstract

L'invention concerne un procédé de diagnostic d'un microcontrôleur à plusieurs canaux, comprenant une unité de commande de modulation par largeur d'impulsion qui exécute la modulation par largeur d'impulsion dans un mode orienté de façon centrée, un amplificateur d'attaque de sortie associé à chaque canal, destiné à attaquer une charge associée au canal en fonction de la phase de modulation par largeur d'impulsion et un système de conversion analogique-numérique, dans lequel le système de conversion analogique-numérique réalise le diagnostic pour chaque canal au centre des phases de modulation par largeur d'impulsion orientées de façon centrée. L'invention concerne en outre une commande destinée à mettre en œuvre le procédé et un microcontrôleur comprenant une telle commande.
PCT/EP2010/069215 2010-01-21 2010-12-08 Commande et procédé de diagnostic dans un microcontrôleur à plusieurs canaux WO2011088930A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010005302A DE102010005302A1 (de) 2010-01-21 2010-01-21 Steuerung und Verfahren zur Diagnose in einem mehrkanaligen Mikrocontroller
DE102010005302.3 2010-01-21

Publications (2)

Publication Number Publication Date
WO2011088930A2 true WO2011088930A2 (fr) 2011-07-28
WO2011088930A3 WO2011088930A3 (fr) 2012-09-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/069215 WO2011088930A2 (fr) 2010-01-21 2010-12-08 Commande et procédé de diagnostic dans un microcontrôleur à plusieurs canaux

Country Status (2)

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DE (1) DE102010005302A1 (fr)
WO (1) WO2011088930A2 (fr)

Cited By (1)

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CN116885955A (zh) * 2023-07-14 2023-10-13 山东艾诺智能仪器有限公司 一种三相双向谐振变换器的驱动控制方法

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CN102737583B (zh) * 2012-07-09 2015-06-17 深圳市磊芯半导体有限公司 Led驱动恒流通道输出驱动器、级联系统及其驱动方法

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GB9920988D0 (en) * 1999-09-07 1999-11-10 Trw Lucas Varity Electric Motor control
KR100655917B1 (ko) * 2000-02-28 2006-12-08 가부시키가이샤 야스가와덴끼 Ｐｗｍ 펄스 제어방법
DE10112820A1 (de) * 2001-03-16 2002-10-02 Bosch Gmbh Robert Verfahren zur Messung von Strömen in Multiphasenwandlern mit Strommesselement-Auslösung
US6965335B1 (en) * 2003-09-15 2005-11-15 Cirrus Logic, Inc. Methods for output edge-balancing in pulse width modulation systems and data converters using the same
DE10352508A1 (de) * 2003-11-11 2005-06-02 Robert Bosch Gmbh Verfahren zur Stromversorgung eines mehrsträngigen, durch Pulsweitenmodulation gesteuerten Elektromotors
ATE523952T1 (de) * 2007-12-18 2011-09-15 Ebm Papst St Georgen Gmbh & Co Elektronisch kommutierter motor

Non-Patent Citations (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116885955A (zh) * 2023-07-14 2023-10-13 山东艾诺智能仪器有限公司 一种三相双向谐振变换器的驱动控制方法
CN116885955B (zh) * 2023-07-14 2024-01-26 山东艾诺智能仪器有限公司 一种三相双向谐振变换器的驱动控制方法

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DE102010005302A1 (de) 2011-07-28
WO2011088930A3 (fr) 2012-09-13

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