WO2020025221A1 - Procédé de diagnostic et dispositif de diagnostic pour vérifier la fonctionnalité d'une charge électromécanique, produit programme informatique et véhicule - Google Patents

Procédé de diagnostic et dispositif de diagnostic pour vérifier la fonctionnalité d'une charge électromécanique, produit programme informatique et véhicule Download PDF

Info

Publication number
WO2020025221A1
WO2020025221A1 PCT/EP2019/066791 EP2019066791W WO2020025221A1 WO 2020025221 A1 WO2020025221 A1 WO 2020025221A1 EP 2019066791 W EP2019066791 W EP 2019066791W WO 2020025221 A1 WO2020025221 A1 WO 2020025221A1
Authority
WO
WIPO (PCT)
Prior art keywords
electromechanical load
functionality
value
diagnostic method
actual value
Prior art date
Application number
PCT/EP2019/066791
Other languages
German (de)
English (en)
Inventor
Alexander Wakengut
Frank Lange
Original Assignee
Volkswagen Aktiengesellschaft
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 Volkswagen Aktiengesellschaft filed Critical Volkswagen Aktiengesellschaft
Priority to CN201980065012.3A priority Critical patent/CN112753157A/zh
Publication of WO2020025221A1 publication Critical patent/WO2020025221A1/fr

Links

Classifications

    • 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
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/54—Electrical circuits
    • E05B81/64—Monitoring or sensing, e.g. by using switches or sensors
    • 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
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0012—Control circuits using digital or numerical techniques

Definitions

  • Diagnostic method and diagnostic device for verifying the functionality of an electromechanical load, as well as a computer program product and a vehicle
  • the invention relates to a diagnostic method and a diagnostic device for verifying the functionality of an electromechanical load in an electrical circuit, as well as a computer program product and a vehicle according to the preamble of the independent claims.
  • a method and a device for monitoring the performance of a plurality of electrical consumers from a single source is known from US Pat. No. 6,430,518 B1.
  • a data acquisition system acquires the current and the voltage from a common circuit which provides energy to load branch circuits.
  • the load branch circuits include consumers whose load status changes, for example, during starting or stopping.
  • Transmitters that are connected to the load branch circuits identify those consumers whose load status changes.
  • a data processor receives information both from sensors and from the transmitters in order to connect the measured current and voltage information from the common circuit to the respective consumers, the load state of which changes.
  • a method for determining the supply voltage of a load and a load are known from US 2016/0313381 A1.
  • a measuring module is provided with which the supply voltages can be determined from measured voltages using a matrix operation.
  • the matrix operation is used in particular to compensate for potential differences or potential shifts between the measuring system and the supply network, without the need for hardware measures, such as a voltage converter.
  • an error prediction system for electrical distribution systems and monitored loads is known from US Pat. No. 9,453,869 B1. The voltage quality of an electrical system is monitored using a number of system parameters.
  • the system parameter data are summarized and analyzed in order to determine the load factors for the system over time and the respective system is evaluated with a derived standard deviation factor.
  • the standard deviation is used to determine an alarm threshold.
  • the constant monitoring enables the system to inform an employee about a possible error in one or more system components. In this way, repairs can be carried out before the component fails and the system experiences an error condition.
  • a disadvantage of the known prior art is that the properties of the consumers, such as, for example, the power consumption, must first be analyzed. This means that the electrical properties of the consumers have to be preprocessed so that the performance of the consumers is monitored correctly or an error is correctly diagnosed. In the prior art, only incorrect activation of the consumer is recorded. However, correct control of the electromechanical load is not diagnosed.
  • the object of the invention is to demonstrate the functionality of electromechanical loads with flexible or dynamic power consumption as simply and reliably as possible.
  • the invention is based on the knowledge that a malfunction is frequently diagnosed in the prior art, in particular in the case of low load currents in electromechanical loads, even though the electromechanical load is functioning properly. Furthermore, it is unnecessary to monitor the current consumption of the load over the entire actuation time of the electromechanical load. To verify the functionality of an electromechanical load, it is sufficient to statistically evaluate the dynamic current curve.
  • the invention is based on the idea of analyzing the current consumption of an electromechanical load while driving the electromechanical load in random samples or in a defined period of time. If the current in the samples or in the defined exceeds Time segment a threshold value, it is possible to easily verify the functionality of the electromechanical load.
  • the invention provides a diagnostic method for verifying the functionality of an electromechanical load in an electrical circuit.
  • the diagnostic method comprises in a step a) the control of the electromechanical load with a control signal, in a step b) the detection of an actual value of the control signal and in a step c) the comparison of an amount of a predetermined threshold value with an amount of the first actual value.
  • the diagnostic method comprises repeating steps b) and c) at predetermined time intervals, as long as the activation in step a) takes place.
  • the diagnostic method also includes the generation of a confirmation value, which represents the functionality of the electromechanical load, only if the amount of the first actual value is at least as large as the amount of the threshold value in at least two passes of step c).
  • control signal of an electromechanical load can be sampled at predetermined time intervals until the control has ended.
  • the functionality of the electromechanical load can then only be confirmed in the event that at least two, preferably three sample values, in particular at least two, preferably three absolute sample values, are greater than or equal to a defined limit value, in particular a defined, absolute limit value.
  • the diagnostic method can be carried out regardless of the type of electromechanical load.
  • the electrical properties of the electromechanical load such as, for example, the current consumption or power consumption when the electromechanical load is switched on or off, need not be evaluated beforehand.
  • the diagnostic method can be used universally and can be easily implemented in existing electrical circuits.
  • a random determination of the functionality of the electromechanical load on the basis of a single value for example due to a line fault in the electrical circuit, is prevented by waiting for at least two actual values, the magnitude of which is greater than the magnitude of the threshold value , The reliability of the electromechanical load is thus reliably confirmed.
  • the electrical circuit mentioned can in particular be designed as an electrical system of a vehicle. It is also conceivable that the electrical circuit is part of a system, one Production device or an electromechanical device can be.
  • the electromechanical load can in particular be implemented as a so-called “safe motor”, that is to say as a servomotor of a motor vehicle lock.
  • the control signal can preferably be designed as a current signal or as a voltage signal.
  • the first actual value can be recorded as a current or as a voltage amplitude and, analogously, the threshold value can also be specified as a current or voltage amplitude.
  • the predetermined time intervals can preferably be less than the time interval in which the electromechanical load is activated.
  • one embodiment of the diagnostic method provides for the generation of an error value, which represents an inoperability of the electromechanical load, only when the actuation of the electromechanical load according to step a) has ended and only if the step has passed less than two times c) the amount of the first actual value is at least as large as the amount of the threshold value.
  • a malfunction of the electromechanical load can only be determined if the electromechanical load is no longer controlled and only if fewer than two, in particular three, of the absolute actual values are greater than or equal to the absolute threshold value.
  • the error value can be present, for example, as a binary or hexadecimal single or multi-digit error code and can be stored in a motor vehicle error memory, for example.
  • the diagnostic method comprises, in a step g), the control of the electromechanical load with a control signal, and in a step h), the detection of a first actual value of the control signal. Furthermore, in a step i), the embodiment variant comprises generating a confirmation value which is the Functionality of the electromechanical load represents, wherein the amount of the first actual value is less than an amount of a predetermined threshold value for at most a predetermined period of time.
  • the control of the electromechanical load can take place within a control period with the control signal.
  • the functionality of the electromechanical load can only be confirmed if the absolute actual value is greater than or equal to the absolute threshold value within a defined period of time.
  • the defined period of time can preferably be less than or equal to the activation period.
  • the first actual value can in particular be recorded as a time profile of the control signal. So the first actual value can also be called an actual signal.
  • the first actual value can particularly preferably only be recorded after a certain settling period. The settling period can be determined depending on the properties of the electromechanical load.
  • the diagnostic method comprises in a step j) the control of the electromechanical load with a control signal, in a step k) the detection of an actual value of the control signal and in a step I) the determination of a second actual value of the control signal which is different from the first Actual value depends.
  • the diagnostic method also comprises repeating steps k) and I) at predetermined time intervals, as long as the activation takes place in step j) and in a step n) the generation of a confirmation value which represents the functionality of the electromechanical load, and if a sum of amounts of the respective second actual value is at least as large as an amount of a predetermined threshold value.
  • control signal can be sampled at defined time intervals, the resulting sampled values corresponding to the respective first actual values.
  • the second actual values can then be formed from the sampled values, that is to say the second actual values correlate with the first actual value.
  • the second actual value can be determined, for example, as work or performance. This is particularly advantageous if the electromechanical load, for example, operates a mechanical component, such as a Bowden cable.
  • One embodiment provides that the electromechanical load is controlled with a current.
  • the control signal can be designed as an electrical current. This has the advantage that with a known operating voltage of the electrical circuit, the dynamic change in the drive current over time can be determined in a simple manner.
  • the first actual value is a current.
  • the first actual value can be recorded as a current. This has the advantage that the first actual value can be detected in a simple manner as the amplitude of the time-varying current profile at a specific point in time or within a specific period of time.
  • the second actual value is electrical work.
  • the second actual value can be formed as electrical work from the first actual value. This has the advantage that mechanical components which are coupled to the electromechanical load can also be checked indirectly for their functionality.
  • the invention also relates to a computer program product, comprising a series of instructions which, when executed by at least one processor, cause a diagnostic device, a method according to one of the preceding claims for verifying the functionality of an electromechanical load in an electrical circuit.
  • the electrical circuit can also have a processor which is designed to execute a series of instructions. With these instructions, the processor can control a diagnostic device, which can then execute a diagnostic method for verifying the functionality of the electromechanical load.
  • the invention also relates to a diagnostic device for verifying the functionality of an electromechanical load in an electrical circuit, which is designed to carry out a diagnostic method according to one of claims 1 to 7.
  • a diagnostic device can be provided which makes it possible to check the functionality of an electromechanical load in an electrical circuit.
  • the diagnostic device can carry out at least one of the aforementioned diagnostic methods.
  • the diagnostic device can be designed, for example, as a microcontroller in the electrical circuit.
  • the microcontroller can be electrically connected to the electromechanical load and can be designed to control the electromechanical load or to evaluate the control signal of the electromechanical load.
  • the invention also provides a vehicle with a diagnostic device according to claim 9.
  • vehicle can be designed in particular as a motor vehicle, passenger car or truck.
  • vehicle can also be an electric vehicle or a hybrid vehicle, for example.
  • the invention also includes combinations of the features of the described embodiments.
  • the invention also includes further developments of the computer program product according to the invention, the diagnostic device according to the invention and the vehicle according to the invention, which have features such as they have already been described in connection with the further developments of the embodiment variants of the diagnostic method according to the invention. For this reason, the corresponding developments of the design variants of the diagnostic method are not described again here.
  • Fig. 1 A current waveform signal of a servomotor in a motor vehicle over time at constant voltage during unlocking, the operability of the
  • Unlocking motor is determined by sampling the current waveform signal
  • FIG. 2 shows a flowchart of method steps of an embodiment of the diagnostic method for verifying the functionality of an unlocking motor in a motor vehicle
  • Fig. 3 shows a current waveform signal of a servomotor in a motor vehicle over time at constant voltage during unlocking, the operability of the
  • Unlocking motor is determined by checking a time constant of the current waveform signal.
  • the exemplary embodiment explained below is a preferred embodiment of the invention.
  • the described components of the embodiment each represent individual features of the invention that are to be considered independently of one another, which further develop the invention independently of one another and are therefore also to be regarded individually or in a combination other than the one shown as part of the invention.
  • the described embodiment can also be supplemented by further features of the invention that have already been described.
  • FIG. 1 shows a diagram 1 of a current profile over time.
  • the abscissa represents the time in milliseconds t [ms] and the ordinate represents the current in amperes I [A].
  • FIG. 1 shows a control signal 2, that is to say a current profile of an electromechanical load, here for example one Actuator for a lock in a motor vehicle.
  • the lock is intended to have a Unlock command. Unlocking is carried out by actuating the servomotor with a negative current at a constant voltage of 9.5 V and a constant temperature of 70 ° C. Given these general conditions, the most critical application of actuating a servomotor is given, since the current flow is minimal in this case.
  • the servomotor can be controlled, for example, with a positive current to lock the motor vehicle.
  • the actuating motor for locking or unlocking the lock can be activated, for example, with a microcontroller, which can be part of an on-board electrical system in the motor vehicle.
  • the control signal can settle in a range of approximately 0 A outside of a control period Ats.
  • the current profile as can be seen in FIG. 1
  • the dynamic change in the control signal 2 can depend in particular on the properties of the servomotor.
  • a transient response of the current for example due to the switching on of the servomotor, can be determined for about 60 ms within a settling period Ats.
  • the control signal 2 swings to an approximately constant value of approximately -0.7 A until the end of the control period Ats.
  • the actuation signal can be sampled.
  • the scans 3.1, 3.2 can preferably take place at predetermined time intervals Ati, At 2 .
  • the predetermined time intervals Ati, At 2 are preferably constant.
  • the predetermined time intervals Ati, At 2 are fixed at 20 ms.
  • the samples can then be compared to a threshold value.
  • the threshold value is defined as -150 mA.
  • This threshold value can in particular be predetermined by the sensitivity of a current measuring circuit that detects the current strength.
  • the current measuring circuit can therefore only detect a current if the current is outside a Limit range of +/- 150 mA. Within this limit range, the current measurement circuit cannot measure the current correctly, that is to say the detected current corresponds to 0 A. It is also conceivable that a less sensitive current measurement circuit is provided, which can only detect a current, for example, if the current is outside a limit range of +/- 300 mA.
  • Ats it can be particularly preferred that at least two samples, for example three samples, more precisely the amount of three samples, are greater than or equal to the amount of the predetermined threshold value 4 within the control period Ats. Only if this condition is met can the microcontroller generate a confirmation value that represents that the servomotor has been activated correctly. As shown in FIG. 1, this condition is already fulfilled in this exemplary embodiment after the fifth sampling 3.1, 3.2 within the control period Ats.
  • the microcontroller can, for example, generate an error value that confirms that the servomotor is not was controlled correctly.
  • a diagnostic concept as shown in FIG. 1, can be implemented on the built-in hardware of an on-board network of a motor vehicle, for example in a microcontroller.
  • the current profile of an electromechanical load for example a servomotor, can be sampled every 20 ms, for example.
  • a statistical evaluation of the sample values can also be carried out.
  • To 1 shows the current profile of a servomotor, also called a safe motor, of a motor vehicle lock at 70 ° C. and 9.5 V, the lock being controlled with an unlocking command.
  • At least two samples that is to say at least two sample values, that is to say three sample values for example, reach or exceed the threshold, that is to say a threshold value, of -150 mA, so that the lock motor has been actuated correctly.
  • the condition that at least two, for example three, measurements are positive, i.e. the absolute sample values are greater than or equal to the absolute threshold value, is intended to prevent a random positive measurement, for example due to a fault on a line from the Microcontroller to the electromechanical load, leading to incorrect diagnosis.
  • a work performed by the servomotor can also be calculated on the basis of the determined sample values, as shown in FIG. 1.
  • the work can be calculated as follows:
  • Atx UI D ⁇ c
  • U represents a constant voltage, for example 9.5 V, in the vehicle electrical system
  • Atx describes a predetermined time interval, for example Ati and At 2
  • I represents the current strength of the control signal at a specific point in time. If the sampling 3.1, 3.2 takes place, for example, regularly with a predetermined time interval Ati, At 2 of 20 ms, the work can thus be calculated every 20 ms. After the activation has ended, that is to say outside the activation period Ats, the sum of all work within the activation period Ats can then be formed and compared with a defined limit value. According to the exemplary embodiment shown in FIG. 1, the limit value could therefore be calculated here:
  • the current profile of the servomotor can also be sampled every 20 ms, for example. From the samples however, the work done can then be calculated. For this purpose, the individual work can be cumulated per given time interval Ati, ⁇ t 2 and compared with a reference value, i.e. the limit value. If the sum of the work is below the reference value, the lock was not activated correctly. The lock was not unlocked correctly. If the load current, that is to say the control signal 2, of the electromechanical load is below the threshold value 4, as shown in FIG. 1 for example at 40 ms, the work results in 0 J since the current is 0 in this case due to the sensitivity of the microcontroller A is detected.
  • a reference value i.e. the limit value
  • FIG. 2 shows a flowchart of method steps of an embodiment of the described diagnostic method.
  • an electromechanical load for example a servomotor
  • the diagnostic method can be started in a first step 20.
  • a counter can be set to zero in a step 21 and a sampling time can be set, for example, to 20 ms.
  • the current value of the control signal 2 of the electromechanical load that is to say for example the current strength, can then be detected and compared with a defined threshold value 4.
  • the counter can be incremented by one in step 22. It can then be checked in a step 24 whether the activation of the electromechanical load has already ended. If the sample value does not exceed the threshold value in step 22, the counter cannot be counted up and step 24 follows immediately. In step 24 there are now two possibilities. If the activation has not ended, a new point in time for acquiring a new sample value can be defined in step 25 in accordance with the defined time interval. At the new sampling time, a sampling value can then be determined again in step 22 and compared with the threshold value 4.
  • the absolute threshold value 4 can be defined, for example, as 150 mA
  • Steps 22 to 25 can be carried out as often as a result until it is determined in step 24 that control has ended.
  • the counter reading can be checked in step 26. If, for example, the counter reading in the exemplary embodiment in FIG. 2 is greater than or equal to three, that is to say that at least three absolute sample values that exceed the absolute threshold value 4 were recorded in step 22, the method can be ended in a step 28. If this condition is not met, an entry can be made in an error memory in step 27 before the method can be ended in step 28.
  • FIG. 3 shows, similar to FIG. 1, the control signal 2 of a servomotor for a motor vehicle lock during the unlocking.
  • a predetermined time period At can be selected within the control period Ats, for example as a function of the transient response when the servomotor is switched on.
  • the predetermined time period is shorter than the control period Ats.
  • a predetermined time period At of approximately 300 ms and a control period Ats of approximately 550 ms are shown.
  • a settling period Ati can also be defined, as a result of which the start of the diagnostic method can be delayed.
  • the settling period Ati is approximately 20 ms.
  • the actuation signal 2 can be detected here within the predetermined time period At. It can then be determined whether the absolute control signal 2 exceeds an absolute threshold value 4 at least once within the predetermined time period At.
  • the threshold value is determined in FIG. 3 as -150 mA as in FIG. 1.
  • FIG. 3 shows that the control signal 2 exceeds the threshold value 4 within the predetermined time period At for an actual time period At 3 , which is approximately 250 ms. Since the servomotor in FIG. 3 is driven with a negative current, conversely it means that the amount of the drive signal for an actual time period At 3 of approximately 250 ms does not exceed the amount of the threshold value. Since the actual time period At 3 is smaller than the specified time period At and the absolute control signal exceeds the absolute threshold value within the specified time period At, but outside the actual time period At 3 , it can be determined that the servomotor is controlled correctly in this case. The microcontroller can then generate a confirmation value that represents the correct functioning of the servomotor.
  • the diagnostic concept shown in FIG. 3 can also be implemented in the built-in hardware of an on-board network of a motor vehicle, for example a microcontroller.
  • logic can be implemented in the microcontroller, which only detects an error when a defined current threshold, ie an absolute threshold value 4, is undershot in direct connection with a specific time period, the specified time period At.
  • a defined current threshold ie an absolute threshold value 4
  • An associated time period can be set, for example, as 300 ms. In context, this means specifically that there is only a fault, i.e. that the servomotor was not correctly controlled only if the current did not exceed the 150 mA threshold for more than 300 ms.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

L'invention concerne un procédé de diagnostic destiné à vérifier la fonctionnalité de charges électromécaniques dans des circuits électriques à profil de courant flexible ou dynamique de la manière la plus simple et la plus fiable possible. Une variante de réalisation du procédé de diagnostic comprend la commande d'une charge électromécanique avec un signal de commande (2), la détection d'une première valeur réelle du signal de commande (2), puis la comparaison d'une valeur de seuil prédéterminée (4) avec la première valeur réelle, la détection et la comparaison étant répétées à des intervalles de temps prédéterminés (Δt1, Δt2) tant que la commande est effectuée. Une valeur de confirmation est ensuite générée qui représente la fonctionnalité de la charge électromécanique, uniquement si la première valeur réelle est égale à la valeur de seuil (4) dans au moins deux cycles de détection et de comparaison.
PCT/EP2019/066791 2018-08-01 2019-06-25 Procédé de diagnostic et dispositif de diagnostic pour vérifier la fonctionnalité d'une charge électromécanique, produit programme informatique et véhicule WO2020025221A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201980065012.3A CN112753157A (zh) 2018-08-01 2019-06-25 用于验证机电负载的功能性的诊断方法和诊断设备及计算机程序产品和车辆

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018212845.6A DE102018212845B3 (de) 2018-08-01 2018-08-01 Diagnoseverfahren und Diagnosevorrichtung zum Verifizieren einer Funktionsfähigkeit einer elektromechanischen Last, sowie ein Computerprogrammprodukt und ein Fahrzeug
DE102018212845.6 2018-08-01

Publications (1)

Publication Number Publication Date
WO2020025221A1 true WO2020025221A1 (fr) 2020-02-06

Family

ID=67106036

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/066791 WO2020025221A1 (fr) 2018-08-01 2019-06-25 Procédé de diagnostic et dispositif de diagnostic pour vérifier la fonctionnalité d'une charge électromécanique, produit programme informatique et véhicule

Country Status (3)

Country Link
CN (1) CN112753157A (fr)
DE (1) DE102018212845B3 (fr)
WO (1) WO2020025221A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020103907A1 (de) 2020-02-14 2021-08-19 Zf Automotive Germany Gmbh Verfahren zum Erkennen des Reißens eines Zahnriemens einer Lenkvorrichtung sowie Lenkvorrichtung

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5057962A (en) * 1990-01-22 1991-10-15 General Electric Company Microprocessor-based protective relay system
US6430518B1 (en) 1999-08-11 2002-08-06 Fps, Inc. Method and apparatus for monitoring performance of multiple electrical loads from a single source
US20050093500A1 (en) * 2003-10-31 2005-05-05 Robertson Naysen J. Integrated, redundant high availability fan system
EP1614579A2 (fr) * 2004-07-07 2006-01-11 Toyota Jidosha Kabushiki Kaisha Dispositif d'alimentation électrique avec détection de courant anormal dans le circuit de puissance
JP2008074119A (ja) * 2006-09-19 2008-04-03 Nsk Ltd 電動パワーステアリング装置の制御装置
US7450355B2 (en) * 2005-03-18 2008-11-11 Toyota Jidosha Kabushiki Kaisha Power supply apparatus with function of detecting abnormality of current sensor
US20090151801A1 (en) * 2007-12-12 2009-06-18 John Gorman Method, system and apparatus for an efficient design and operation of a pump motor
DE102014224507A1 (de) * 2013-12-03 2015-06-03 Ford Global Technologies, Llc Diagnoseverfahren für Relaisgesteuerten elektrischen Lüfter mit mehreren Drehzahlen
DE102013020418A1 (de) * 2013-12-05 2015-06-11 Daimler Ag Kraftfahrzeugschloss sowie Verfahren zum Entriegeln eines Kraftfahrzeugschlosses
US9453869B1 (en) 2012-08-08 2016-09-27 Perry Parkin Fault prediction system for electrical distribution systems and monitored loads
US20160313381A1 (en) 2013-12-13 2016-10-27 Siemens Aktiengesellschaft Method for determining the supply voltages of a load, and load

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10338492A1 (de) 2003-08-21 2005-03-17 Siemens Ag Antriebssystem mit Antriebsriemen

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5057962A (en) * 1990-01-22 1991-10-15 General Electric Company Microprocessor-based protective relay system
US6430518B1 (en) 1999-08-11 2002-08-06 Fps, Inc. Method and apparatus for monitoring performance of multiple electrical loads from a single source
US20050093500A1 (en) * 2003-10-31 2005-05-05 Robertson Naysen J. Integrated, redundant high availability fan system
EP1614579A2 (fr) * 2004-07-07 2006-01-11 Toyota Jidosha Kabushiki Kaisha Dispositif d'alimentation électrique avec détection de courant anormal dans le circuit de puissance
US7450355B2 (en) * 2005-03-18 2008-11-11 Toyota Jidosha Kabushiki Kaisha Power supply apparatus with function of detecting abnormality of current sensor
JP2008074119A (ja) * 2006-09-19 2008-04-03 Nsk Ltd 電動パワーステアリング装置の制御装置
US20090151801A1 (en) * 2007-12-12 2009-06-18 John Gorman Method, system and apparatus for an efficient design and operation of a pump motor
US9453869B1 (en) 2012-08-08 2016-09-27 Perry Parkin Fault prediction system for electrical distribution systems and monitored loads
DE102014224507A1 (de) * 2013-12-03 2015-06-03 Ford Global Technologies, Llc Diagnoseverfahren für Relaisgesteuerten elektrischen Lüfter mit mehreren Drehzahlen
DE102013020418A1 (de) * 2013-12-05 2015-06-11 Daimler Ag Kraftfahrzeugschloss sowie Verfahren zum Entriegeln eines Kraftfahrzeugschlosses
US20160313381A1 (en) 2013-12-13 2016-10-27 Siemens Aktiengesellschaft Method for determining the supply voltages of a load, and load

Also Published As

Publication number Publication date
CN112753157A (zh) 2021-05-04
DE102018212845B3 (de) 2019-12-05

Similar Documents

Publication Publication Date Title
EP2619599B1 (fr) Dispositif electrique et procede de detection d'une perte de phase dans un dispositif electrique
DE102015008831A1 (de) Hochvolt-Netz und Verfahren zum Lokalisieren eines Isolationsfehlers in einem Hochvolt-Netz für ein Kraftfahrzeug
EP3053176B1 (fr) Procédé et dispositif de surveillance d'au moins un contact de commande pour un véhicule
DE102017209314A1 (de) Verfahren zum Betreiben einer Feststellbremse und Steuereinheit zum Betreiben einer Feststellbremse
EP0676055B1 (fr) Agencement de circuits permettant de surveiller une pluralite de bobines
DE102017209319A1 (de) Verfahren zum Betreiben einer Feststellbremse und Steuergerät zum Betreiben einer Feststellbremse
DE60104845T2 (de) System und verfahren zur diagnose von fehlerzuständen in der energieversorgung einer elektrischen last
EP2546852B1 (fr) Relais de sécurité bistable
DE102014221042A1 (de) Fehlerstromschutzvorrichtung zur Ableitstromerfassung
DE102019212909A1 (de) Verfahren zum Detektieren eines Fehlers in einem Batteriesystem sowie Batteriesystem und Kraftfahrzeug
EP2391902B1 (fr) Procédé de fonctionnement d'un moteur sans balais
WO2020025221A1 (fr) Procédé de diagnostic et dispositif de diagnostic pour vérifier la fonctionnalité d'une charge électromécanique, produit programme informatique et véhicule
DE102016123269A1 (de) Verfahren für eine elektrische Funktionsprüfung bei einem Fahrzeug
DE102005004174A1 (de) Verfahren zur Diagnose einer Kraftfahrzeugbatterie
DE10249568A1 (de) Fehleranalyse einer Wechselrichter-Schaltung
DE102008042390A1 (de) Verfahren zur Diagnose von Fehlerzuständen einer im Stern gewickelten Drehfeldmaschine
DE4313532B4 (de) Verfahren zur Überprüfung einer Endstufe
DE102021111734A1 (de) Diagnosefähige Schaltungsanordnung und Verfahren zur Diagnose einer Schaltungsanordnung
EP3283321A1 (fr) Détection d'un actionnement d'un élément de commande dans un véhicule automobile
DE102020202455A1 (de) Kabelbaum und sicherheitsmanagementsystem
DE102019132769A1 (de) Verfahren und Schaltungsanordnung zur Diagnose eines Schützes einer elektrischen Vorrichtung
EP0694451B1 (fr) Dispositif de sécurité pour véhicule
EP3833589B1 (fr) Système de contrôle pour véhicule automobile et procédé de diagnostic d'erreur dans un système de contrôle
EP1695104B1 (fr) Procede et ensemble pour tester un etage de sortie de puissance
DE102020210339B4 (de) Schaltungsanordnung und Verfahren zur Fehlererkennung

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19734047

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 19734047

Country of ref document: EP

Kind code of ref document: A1