CN105738750A - Method for identifying fault current of control unit of multiphase actuator, and monitoring device thereof - Google Patents
Method for identifying fault current of control unit of multiphase actuator, and monitoring device thereof Download PDFInfo
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- CN105738750A CN105738750A CN201511036036.6A CN201511036036A CN105738750A CN 105738750 A CN105738750 A CN 105738750A CN 201511036036 A CN201511036036 A CN 201511036036A CN 105738750 A CN105738750 A CN 105738750A
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- voltage signal
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Electric Motors In General (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The invention relates to a method (360) for identifying a fault current for a control unit (100) for driving a multiphase actuator (102), wherein the control unit (100) has a first terminal (104) and a second terminal (106) for a supply current, wherein the method (360) at least comprises a step of reading (362) a first voltage signal (226) which represents a first current value (224) at the first terminal and a second voltage signal (230) that represents a second current value (228) at the second terminal (106); and a step of forming (364) a fault voltage signal (234) which represents a fault current on condition that the first voltage signal (226) and the second voltage signal (230) are used, so as to identify the fault current on condition that the fault voltage signal (234) is used.
Description
Technical field
A kind of method that the present invention relates to fault current controlling equipment for identifying for manipulating multi-phase actuator, relates to a kind of corresponding supervising device and a kind of corresponding computer program.
Background technology
In order to manipulate three phase electric machine, producing electricity rotating field usually by B6-bridge, described electricity rotating field makes motor rotate.In order to protect control equipment protect against big, be such as likely to the short circuit current that occurs when connecting cable abrasion; generally observe the voltage drop on the power switch used and carry out when exceeding certain voltage cutting off (so-called Uds-cuts off, and Uds refers to the voltage in drain source path).This has an effect under the current conditions being significantly greater than prespecified running current.
Summary of the invention
Within this context, utilize a kind of method that the approach herein proposed provides fault current controlling equipment for identifying for manipulating multi-phase actuator, a kind of supervising device using the method and a kind of corresponding computer program according to independent claims of last offer are provided in addition.Favourable design is obtained from each dependent claims and following description.
By manipulation polyphase machine, compare with the electric current mobile phase at relevant with this second confession electric connection terminal place for the electric current flowing at electric connection terminal place first and may indicate that fault current.Therefore, monitoring electric current flowing in direct-current tie.At this, it can be advantageous to avoid the overload of actuation means.At this advantageously, it is also possible to detect the outside short circuit to ground.
A kind of method providing fault current controlling equipment for identifying for manipulating multi-phase actuator, wherein, described control equipment has the first terminals for supply current and the second terminals, and wherein said method has steps of:
Read in first voltage signal characterizing the first current value at the first terminals place and the second voltage signal characterizing the second current value at the second terminals place；And
The failure voltage signal characterizing fault current is formed, in order to identify fault current when operational failure voltage signal when using the first voltage signal and the second voltage signal.
" multi-phase actuator " is such as construed as three phase alternating current motor.At this, it is possible to controlling supply of equipment DC current.It is thus possible, for instance the first terminals can have positive potential, and the second terminals have negative potential.Circuit in control equipment can provide the three-phase current for manipulating actuator.Electric current or electric current flowing can be measured on the first terminals and/or the second terminals.Current measure device can be used at this, measure route marker or measurement translator.The current measurement about magnetic field can be carried out when using current sensor and/or when using and measuring resistance when this.Current value can be characterized by the signal of standard.
Additionally, in forming step, failure voltage signal can be formed as the difference between the first voltage signal and the second voltage signal.Therefore, it can check simply fault current.The failure voltage signal of deviation 0V can characterize the existence of fault current.
Described method may include steps of before forming the step of failure voltage signal: is transferred on the second electromotive force of the second voltage signal by the first electromotive force of the first voltage signal, according to the second electromotive force adjustment of the second voltage signal or the first electromotive force changing the first voltage signal.It can be advantageous to make the current signal transfer at the first terminals place to the second electromotive force by current mirroring circuit (Stromspiegelschaltung), or suitable with this second electromotive force, and be therefore ready for comparing.Such as, the second electromotive force can be negative potential or ground connection.
Additionally, described method can include comparison step.Comparison step can carry out after forming the step of failure voltage signal.In comparison step, it is possible to failure voltage signal and the reference signal characterizing threshold value are compared, in order to the control signal for cutting-off control apparatus and/or multi-phase actuator is provided when failure voltage signal exceedes threshold value.Described control signal can simply in case of a fault for cutting off the actuation means of multi-phase actuator.
Analog digital conversion step is also suitable, and the first voltage signal wherein characterizing the first current value and the second voltage signal characterizing the second current value are digitized, in order to implement forming step and/or transmitting step and/or comparison step in the microprocessor.Therefore, it can to realize in software the single step of described method or most.
Reading in step, it is possible to by the voltage of decline that the first voltage signal acquisition is the first shunt resistance place in being arranged in the first terminals.Additionally, reading in step, it is possible to by the voltage of decline that the second voltage signal acquisition is the second shunt resistance place in being arranged in the second terminals.At this, it is possible to intercept a voltage before shunt resistance and another voltage after shunt resistance, and provide the difference of the two voltage as the first voltage signal or the second voltage signal by comparator.Alternatively, it is possible to by the voltage before shunt resistance and the other voltage digital after shunt resistance, and when use microprocessor determine difference." shunt resistance " can be understood as measurement resistance, current measurement shunt resistance (Strommessshunt) or shunt resistance.Shunt resistance can have four line terminals.
In forming step, failure voltage signal can be formed when using comparator, wherein apply the first voltage signal at the first input end place of comparator, the second input end at comparator applies the second voltage signal, and failure voltage signal is provided as difference at the output of comparator.Therefore, it can be realized simply and inexpensively the step of described method by analog circuit.
The approach herein proposed additionally provides a kind of supervising device, and it is configured in corresponding device to implement, manipulates or change the step of the modification of methods set forth herein.By this enforcement modification of the supervising device form of the present invention, it is also possible to rapidly and efficiently solve the task that the present invention is based on.
" supervising device " currently can be understood as electricity equipment, and sensor signal is processed and exports control signal and/or data signal according to it by described electricity equipment.Supervising device can have interface, and described interface can construct with hardware and/or software mode.When hardware mode constructs, interface can be such as the part of so-called system ASIC, and it comprises the difference in functionality of described device.But it can be possible that described interface is the integrated circuit of self, or can be made up of discrete assembly at least partly.In the structure of software mode, described interface can be software module, and described software module is such as present on microcontroller by other software modules.
Computer program or have what the computer program of program code was also advantageous that, described program code can be stored on the storage medium of machine-readable carrier or such as semiconductor memory, harddisk memory or optical memory etc, and especially when running program product or program on computer or device such as supervising device, described program code is used to implement, change and/or the manipulation step according to the method for the embodiment being outlined above.
Accompanying drawing explanation
The scheme that herein propose exemplarily is explained further below by accompanying drawing.Wherein,
Fig. 1 illustrates the block diagram controlling equipment for multi-phase actuator is manipulated；
Fig. 2 illustrates the block diagram of the supervising device according to an embodiment of the present invention；
Fig. 3 illustrates the block diagram of the supervising device according to an embodiment of the present invention；
Fig. 4 illustrates the block diagram of the supervising device according to an embodiment of the present invention；And
Fig. 5 illustrates the flow chart of the method according to an embodiment of the present invention.
Detailed description of the invention
Below, in the description of the advantageous embodiment of the present invention, use same or analogous accompanying drawing labelling for element that is that illustrate in different figures and that similarly work, wherein eliminate the description of the repeatability to these elements.
Fig. 1 illustrates the block diagram of the control equipment 100 for manipulating multi-phase actuator 102.Multi-phase actuator 102 represents three phase electric machine 102 typically.Control equipment 100 has the first terminals 104 and the second terminals 106 for supply current.In one embodiment, apply positive potential at the first terminals 104 place, and apply negative potential at the second terminals 106 place.Second terminals 106 ground connection.Control equipment 100 has B6-bridge 108 between the first terminals 104 and the second terminals 106, is used for manipulating multi-phase actuator 102.B6-bridge 108 includes 6 power switch 110, and wherein a phase 112 of terminals 104,106 with multi-phase actuator 102 is coupled by a corresponding power switch 110.For clarity, two power switch 110 exemplarily with accompanying drawing labelling only it are provided with.At this, power switch and Uds-supervising device 114 phase arranged between the first terminals 104 and first-phase 112 couple, and the power switch arranged between the second terminals 106 and first-phase 112 and the 2nd Uds-supervising device 114 phase couple.Uds-supervising device 114 be configured to observation station use power switch 114 on voltage drop and when exceeding certain voltage cutting-off control apparatus 100 or power switch 110.
If owing to the electric current that short circuit produces is not sufficiently large thus cut-out can not be triggered, then control equipment 100 is just loaded the electric current to increase constantly, and this may result in fault when exceeding robustness (Robustheit).
Second terminals 106 are arranged shunt resistance 116 or shunt resistance 116.Measuring amplifier 118 and shunt resistance 116 couple, and are configured to measure the voltage drop caused by the electric current flowing through shunt resistance.
In other words, it is provided with current measurement shunt resistance 116 to detect current of electric, is arranged on negative potential in the illustrated embodiment, this simplify further signal processing.But walk around (vorbeiflie β en) shunt resistance 116 to ground short circuit.
In the block diagram shown in Fig. 1, form first-phase 112 ground connection of short circuit.This characterizes a kind of fault, and this fault such as can also be presented by leakage current, Leakage Current or leakage current.
Fig. 2 illustrates the block diagram of the supervising device 220 according to an embodiment of the present invention.Supervising device 220 is configured to identify the fault current of the control equipment 100 for manipulating multi-phase actuator 102.Control equipment 100 can be a kind of embodiment of the control equipment 100 that figure 1 illustrates.Supervising device 220 includes interface 222, for reading in first voltage signal 226 characterizing the first current value 224 at the first terminals 104 place and the second voltage signal 230 characterizing the second current value 228 at the second terminals 106 place.In addition, supervising device 220 includes the device 232 for forming the failure voltage signal 234 characterizing fault current when using the first voltage signal 226 and the second voltage signal 230, in order to identify fault current when operational failure voltage signal 234.
In one embodiment, the device 232 for forming failure voltage signal 234 is configured to failure voltage signal 234 is formed as the difference between the first voltage signal 226 and the second voltage signal 230.
Alternatively, supervising device 220 includes comparison means 236 as shown in Figure 2, and this comparison means is configured to compare failure voltage signal 234 and the reference signal 238 that the input end at comparison means 236 applies.At this, reference signal 238 characterizes the threshold value for failure voltage signal 234.Comparison means 236 is also configured to when failure voltage signal exceedes threshold value provides the control signal 240 for cutting-off control apparatus or multi-phase actuator 102.
As illustrated in figs. 3 and 4, the device being shown here at of supervising device 220 may be implemented as the analog circuit formed by shunt resistance, comparator, measuring amplifier or current mirroring circuit.Alternatively, unshowned analog-digital converter in fig. 2 is used, in order to gather voltage signal or current signal.The device arranged after analog-digital converter is then implemented as software module.Then correspondingly, signal is just rendered as the digital value characterizing voltage or electric current.
The task of supervising device 220 is, have at least one for the control electronics 100 of the outfan manipulating at least one multi-phase actuator 102 in gather the fault current of appearance, in order to cut off by fault current and protect control equipment 100.Therefore, supervising device 220 is also the device for identifying fault current.
One aspect of the present invention is in that, measures and technically gathers and compare two bridge-supply currents 224,228.The difference of the two electric current 224,228 is corresponding to the fault current outside outflow control equipment 100.If the difference of the two electric current 224,228 (failure voltage signal 234) is more than boundary threshold (reference voltage 238), then circuit intervention causes the cut-out of actuation means in an embodiment.
Additionally, in the block diagram shown in Fig. 2, the third phase 112 of formation short circuit or parasite current is ground connection 244 via resistance 242.This characterizes a kind of fault, and this fault such as can also be presented by leakage current, Leakage Current or leakage current.Such fault is can also see that in order in two accompanying drawings making an explanation below.
Fig. 3 illustrates the block diagram of the supervising device 220 according to an embodiment of the present invention.Supervising device 220 can be a kind of embodiment of supervising device 220 shown in figure 2.Supervising device 220 is configured to identify the fault current of the control equipment 100 for manipulating multi-phase actuator 102.Control equipment 100 can be a kind of embodiment of the control equipment 100 that figure 1 illustrates.The device of supervising device 220 is realized by analog component.In other words, supervising device 220 is a kind of analog circuit.First terminals 104 turn on (leiten) by the first shunt resistance 350.Second terminals 106 are turned on by the second shunt resistance 352.First measuring amplifier 354 is connected with the first shunt resistance 350.At this, the first terminals of the first measuring amplifier 354 and the first terminals of the first shunt resistance 350 are connected.Second terminals of the first measuring amplifier 354 are connected with the second terminals of shunt resistance 350.Output at the first measuring amplifier 354 applies the first voltage signal 226.Output at the second measuring amplifier 356 applies the second voltage signal 230.First voltage signal 226 and the second voltage signal 230 are applied to the input end of described device 232, in order to form failure voltage signal 234.Device 232 for forming failure voltage signal 234 is configured between the negative current at the second input 106 place and the positive current at first input end 104 place of control equipment 100 to form difference in this embodiment.
At this, the device 232 for forming failure voltage signal 234 is implemented as comparator 232 in the illustrated embodiment.Failure voltage signal 234 is applied to the input end of the comparison means 236 being configured to comparator 236.Second input of comparator 236 applies reference signal 238.Comparator 236 provides control signal 240 at its output.
In one embodiment, transmitting device 358 is disposed in measuring amplifier 354 and for being formed between the device 232 of failure voltage signal 234, and this transmitting device is configured to be transferred on the second electromotive force of the second voltage signal 230 first electromotive force of the first voltage signal 226.At this, transmitting device 358 is implemented as current mirroring circuit in an embodiment.
By not only carrying out current measurement on the first input end 104 of control equipment 100 but also on the second input 106, it is also possible to learn the outside short circuit to ground.
In the special embodiment of one, device 354 characterize for positive current 224 and transfer signals to the first measuring amplifier on negative potential.In this case, transmitting device 358 is integrated in described device 354.Device 356 characterizes the measuring amplifier for negative current 228.Device 232 is configured between positive current 224 and negative current 228 to form difference.In device 236, comparator 236 by fault current or characterize fault current failure voltage signal 234 compared with threshold value 238.
In practical implementations, in as in the embodiment shown in figure 3, the positive current flowing through current measurement shunt resistance 350 can be measured, its current signal is transferred to negative potential (ground connection, GND) advantageous by current mirroring circuit and is therefore ready for comparing with negative current signal.Then the fault curre of two current signals is produced by forming difference 232.Fault-current signal and threshold value is compared by comparator 236.Output end signal 240 may be used for implementing in case of a fault the cut-out of actuation means 100.Even if mention current signal at this, then this signal is generally also the voltage signal characterizing current signal.
The performance of the microcontroller according to downstream, it is also possible to realize the some or all of of amplifier or comparator 232,236,354,356 by A/D conversion and software.
The parasitic element that can also use such as printed conductor, EMV assembly or anti-protection to error-polarity connection transistor (Verpolschutztransistor) etc in an alternate embodiment of the invention is used as shunt resistance 350,352, as long as they are arranged in feeder line and provide enough precision.Alternatively, current measurement can also by realizing about the current measurement in the magnetic field produced in feed line or terminals.
What Fig. 4 illustrated the control equipment 100 with multiple B6-bridge 108 realizes situation.In this case, all of B6-bridge 108 monitored by analysis of the fault current device 220, thus not each independent B6-bridge 108 being required for analysis circuit 220.
Supervising device 220 generally can be used in all of, expectation wherein and identify in the control equipment 100 flowing out the fault current outside control equipment 100, for instance so that guard block is in order to avoid overload.Particularly advantageously supervising device 220 is for being used for manipulating the control equipment of polyphase machine 102, it may be particularly advantageous to for being used for manipulating the control equipment 100 of multiple motor 102.Such as, supervising device can be used to multiple clutch-control equipment.
Fig. 4 illustrates the block diagram of the supervising device 220 according to an embodiment of the present invention.The description of supervising device 220 is corresponding to the description of the supervising device 220 in Fig. 3.Description in Fig. 4 and Fig. 3 is different in that, control equipment 100 has multiple B6-bridge.Therefore 4 other B6-bridges are shown.Advantageously, all bridges of the analysis of the fault current device monitoring and control equipment 100 of supervising device 220, thus being not required for independent analysis circuit to each bridge.
Fig. 5 illustrate according to an embodiment of the present invention, for identifying the flow chart of method 560 of the fault current controlling equipment for manipulating multi-phase actuator.Control equipment can be a kind of embodiment of the control equipment 100 shown in above-mentioned accompanying drawing.Therefore, multi-phase actuator can be a kind of modification of the multi-phase actuator 102 shown in above-mentioned accompanying drawing.
Described method 560 includes: step 362, its read in the first terminals place characterize the first current value the first voltage signal and the second terminals place characterize the second current value the second voltage signal；And step 364, it forms the failure voltage signal characterizing fault current when using the first voltage signal and the second voltage signal, in order to identify fault current when operational failure voltage signal.
At this, alternatively, failure voltage signal is formed as the difference between the first voltage signal and the second voltage signal.
Alternatively, described method has step 366, and the first electromotive force of the first voltage signal is transferred on the second electromotive force of the second voltage signal by it.This optional transmitting step 366 occurred before forming step 364 at this.
Alternatively, carrying out step 368 after forming step 364, this step 368 compares failure voltage signal and characterizes the reference signal of threshold value, in order to provide the control signal for cutting-off control apparatus and/or multi-phase actuator when failure voltage signal exceedes threshold value.
In one embodiment, described method includes unshowned optional analog digital conversion step.In analog digital conversion step, the first voltage signal and the second voltage signal are digitized, or alternatively, failure voltage signal is digitized.In one embodiment, before and after shunt resistance, voltage is gathered at each input end controlling equipment, in order to determine the voltage signal characterizing corresponding current value.
Have selected embodiment described and illustrated in the accompanying drawings merely illustratively.Can fully or with reference to the different embodiment of each feature combination with one another.An embodiment can also be supplemented by the feature of another kind of embodiment.
Furthermore, it is possible to repeatedly and to implement methods provided herein step with described order different.
If embodiment includes "and/or" relation between fisrt feature and second feature, so this should be read as, embodiment not only has fisrt feature but also have second feature according to a kind of embodiment, and according to another embodiment or only there is fisrt feature or only there is second feature.
Claims (10)
1. one kind is used for identifying the method (360) being used for manipulating the fault current of the control equipment (100) of multi-phase actuator (102), wherein, described control equipment (100) has the first terminals (104) for supply current and the second terminals (106), wherein, described method (360) has steps of:
Read in (362) second voltage signal (230) at first voltage signal (226) of the sign the first current value (224) at described first terminals (104) place and the sign the second current value (228) at described second terminals (106) place；And
Form (364) when using described first voltage signal (226) and described second voltage signal (230) and characterize the failure voltage signal (234) of fault current, in order to identify fault current when using described failure voltage signal (234).
2. method according to claim 1 (360), wherein, in forming step (364), described failure voltage signal (234) is formed as the difference between described first voltage signal (226) and described second voltage signal (230).
3., according to method in any one of the preceding claims wherein (360), it had step (366) suitable for the second electromotive force of the first electromotive force of described first voltage signal (226) Yu described second voltage signal (230) before forming the step (364) of described failure voltage signal (234).
4. according to method in any one of the preceding claims wherein (360), it is having the described failure voltage signal (234) step (368) compared with the reference signal (238) of sign threshold value after forming the step (364) of described failure voltage signal (234), in order to when described failure voltage signal (234) exceedes described threshold value, offer is for the control signal (240) of cutting-off control apparatus (100) and/or multi-phase actuator (102).
5. according to method in any one of the preceding claims wherein (360), it has the second voltage signal (230) to the first voltage signal (226) and sign the second current value that characterize the first current value and carries out the step of analog digital conversion, in order to implement forming step (364) and/or transmitting step (366) and/or comparison step (368) in the microprocessor.
6. according to method in any one of the preceding claims wherein (360), wherein at the voltage reading in the collected decline for the first shunt resistance (350) place in being arranged in described first terminals (104) of the first voltage signal (226) described in step (362), and/or reading in the voltage of the collected decline for the second shunt resistance (352) place in being arranged in described second terminals (106) of the second voltage signal (230) described in step (362).
7. according to method in any one of the preceding claims wherein (360), wherein, forming step (364) forms described failure voltage signal (234) when using comparator (232), wherein apply the first voltage signal (226) at the first input end place of described comparator (232), and the second input end at described comparator (232) applies the second voltage signal (230), and described failure voltage signal (234) is provided as difference at the output of described comparator (232).
8. one kind is used for identifying the supervising device (220) being used for manipulating the fault current of the control equipment (100) of multi-phase actuator (102), wherein, described supervising device (220) have be configured to implement according to any one of aforementioned claim method (360) unit in steps.
9. a computer program, its be arranged for implement according to any one of aforementioned claim method (360) institute in steps.
10. the storage medium that machine can read, this storage medium has the computer program according to claim 9 being stored thereon.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014224639.3 | 2014-12-02 | ||
| DE102014224639.3A DE102014224639A1 (en) | 2014-12-02 | 2014-12-02 | Method and monitoring device for detecting a fault current for a control device for controlling a multiphase actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105738750A true CN105738750A (en) | 2016-07-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511036036.6A Pending CN105738750A (en) | 2014-12-02 | 2015-12-01 | Method for identifying fault current of control unit of multiphase actuator, and monitoring device thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105738750A (en) |
| DE (1) | DE102014224639A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113841313A (en) * | 2019-05-17 | 2021-12-24 | 克诺尔商用车制动系统有限公司 | Apparatus and method for current control of an actuator |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018059658A1 (en) * | 2016-09-27 | 2018-04-05 | Siemens Aktiengesellschaft | Fault current circuit |
| DE102018114115A1 (en) * | 2018-06-13 | 2019-12-19 | Schaeffler Technologies AG & Co. KG | Device for detecting a fault current in an actuator of a vehicle having a control unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1790885A (en) * | 2004-08-30 | 2006-06-21 | 美国芯源系统股份有限公司 | Short circuit current ratcheting in switch mode DC/DC voltage regulators |
| CN101860295A (en) * | 2009-04-02 | 2010-10-13 | 大金工业株式会社 | Driving method and motor driven systems, heat pump, fan motor system |
| CN103069287A (en) * | 2010-08-04 | 2013-04-24 | 菲尼克斯电气有限两合公司 | Method and device for parasitic current detection |
-
2014
- 2014-12-02 DE DE102014224639.3A patent/DE102014224639A1/en not_active Withdrawn
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2015
- 2015-12-01 CN CN201511036036.6A patent/CN105738750A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1790885A (en) * | 2004-08-30 | 2006-06-21 | 美国芯源系统股份有限公司 | Short circuit current ratcheting in switch mode DC/DC voltage regulators |
| CN101860295A (en) * | 2009-04-02 | 2010-10-13 | 大金工业株式会社 | Driving method and motor driven systems, heat pump, fan motor system |
| CN103069287A (en) * | 2010-08-04 | 2013-04-24 | 菲尼克斯电气有限两合公司 | Method and device for parasitic current detection |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113841313A (en) * | 2019-05-17 | 2021-12-24 | 克诺尔商用车制动系统有限公司 | Apparatus and method for current control of an actuator |
| CN113841313B (en) * | 2019-05-17 | 2023-09-22 | 克诺尔商用车制动系统有限公司 | Apparatus and method for current control of an actuator |
| US11791618B2 (en) | 2019-05-17 | 2023-10-17 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Device and method for controlling the current of an actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014224639A1 (en) | 2016-06-02 |
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Application publication date: 20160706 |