CN112965010B - Fault detection method and device of electronic actuator, electronic control equipment and medium - Google Patents
Fault detection method and device of electronic actuator, electronic control equipment and medium Download PDFInfo
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- CN112965010B CN112965010B CN202110182446.0A CN202110182446A CN112965010B CN 112965010 B CN112965010 B CN 112965010B CN 202110182446 A CN202110182446 A CN 202110182446A CN 112965010 B CN112965010 B CN 112965010B
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- 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
- G01R31/54—Testing for continuity
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- 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
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- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
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Abstract
The embodiment of the invention discloses a fault detection method and device of an electronic actuator, an electronic control device and a medium. The fault detection method comprises the following steps: when T15 is electrified, controlling a standby electronic control unit to drive an electronic actuator, and detecting whether a line close to the standby electronic control unit has a fault; controlling a main electronic control unit to drive the electronic actuator, and detecting whether a line close to the main electronic control unit has a fault; and determining fault state information of the electronic actuator according to the detected results of whether the line close to the standby electronic control unit has a fault or not and whether the line close to the main electronic control unit has a fault or not. The technical scheme of the embodiment of the invention realizes the detection of open circuit, ground short circuit and power short circuit faults on the premise of normal work of the electronic actuator, thereby ensuring safe and reliable continuous work of the engine.
Description
Technical Field
The embodiment of the invention relates to the technical field of engines, in particular to a fault detection method and device of an electronic actuator, an electronic control device and a medium.
Background
The thermal redundancy means that the engine system has two identical electronic control units which work simultaneously, one electronic control unit has complete data processing and control functions and is in a normal working state, and the other electronic control unit can process partial data but does not output a control signal and works in a standby state. When the electronic control unit in normal operation breaks down, the engine system is automatically switched to the standby electronic control unit, so that the working continuity of the controlled equipment is ensured.
In addition, before the engine is started, if the fault is not detected, the engine cannot normally work after going out from sea.
Disclosure of Invention
The embodiment of the invention provides a fault detection method, a fault detection device, an electric control device and a fault detection medium for an electronic actuator, which are used for realizing fault detection on open circuit, ground short circuit and power supply short circuit on the premise of normal operation of the electronic actuator, thereby ensuring safe and reliable continuous operation of an engine.
In a first aspect, an embodiment of the present invention provides a method for detecting a fault of an electronic actuator, where the method for detecting a fault of an electronic actuator includes:
when T15 is electrified, controlling a standby electronic control unit to drive an electronic actuator, and detecting whether a line close to the standby electronic control unit has a fault;
controlling a main electronic control unit to drive the electronic actuator, and detecting whether a line close to the main electronic control unit has a fault;
and determining fault state information of the electronic actuator according to the detected results of whether the line close to the standby electronic control unit has a fault or not and whether the line close to the main electronic control unit has a fault or not.
Further, when the standby electronic control unit is controlled to drive the electronic actuator, the method further comprises the following steps:
and controlling the main electronic control unit not to drive.
Further, when the main electronic control unit is controlled to drive the electronic actuator, the method further comprises the following steps:
and controlling the standby electronic control unit not to be driven.
Further, determining the fault status information of the electronic actuator according to the detected results of whether the line close to the standby electronic control unit has a fault and whether the line close to the main electronic control unit has a fault includes:
and if the situation that no fault exists in the line close to the standby electronic control unit and the line close to the main electronic control unit is detected, determining that the fault state information of the electronic actuator is that the electronic actuator is in a non-fault state.
Further, the fault detection method of the electronic actuator further comprises the following steps:
after determining that the electronic actuator is in a non-fault state, starting the engine.
Further, determining the fault status information of the electronic actuator according to the detected results of whether the line close to the standby electronic control unit has a fault and whether the line close to the main electronic control unit has a fault includes:
and if the fault exists in the line close to the standby electronic control unit or the line close to the main electronic control unit, determining that the fault state information of the electronic actuator is that the electronic actuator is in a fault state.
Further, the electronic actuator is a fuel injector or a fuel quantity calculating unit.
In a second aspect, an embodiment of the present invention further provides a fault detection device for an electronic actuator, where the fault detection device for an electronic actuator includes:
the standby fault detection module is used for controlling the standby electronic control unit to drive the electronic actuator and detecting whether a line close to the standby electronic control unit has a fault or not after the T15 is electrified;
the main fault detection module is used for controlling a main electronic control unit to drive the electronic actuator and detecting whether a line close to the main electronic control unit has a fault;
and the fault state determining module is used for determining the fault state information of the electronic actuator according to the detected results of whether the line close to the standby electronic control unit has a fault or not and whether the line close to the main electronic control unit has a fault or not.
In a third aspect, an embodiment of the present invention further provides an electronic control apparatus, including:
one or more processors;
a storage device for storing a plurality of programs,
when at least one of the plurality of programs is executed by the one or more processors, the one or more processors are caused to implement the method for detecting a failure of an electronic actuator according to the embodiment of the first aspect of the present invention.
In a fourth aspect, the embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for detecting a fault of an electronic actuator provided in the embodiment of the first aspect of the present invention.
According to the technical scheme of the embodiment of the invention, after T15 is electrified, the standby electronic control unit is controlled to drive the electronic actuator, and whether a fault exists in a line close to the standby electronic control unit is detected; controlling a main electronic control unit to drive the electronic actuator, and detecting whether a line close to the main electronic control unit has a fault; and determining fault state information of the electronic actuator according to the detected results of whether the line close to the standby electronic control unit has a fault or not and whether the line close to the main electronic control unit has a fault or not. The problem that whether the electronic control unit has faults or not before the engine is started in the prior art can not be accurately detected is solved, so that the faults of open circuit, ground short circuit and power short circuit can be detected on the premise that the electronic actuator normally works, and the safe and reliable continuous work of the engine is guaranteed.
Drawings
FIG. 1 is a schematic diagram of the wiring of two identical electronic control units to the same electronic actuator in a prior art redundant engine;
fig. 2 is a flowchart of a method for detecting a fault of an electronic actuator according to an embodiment of the present invention;
fig. 3 is a flowchart of a fault detection method for an electronic actuator according to a second embodiment of the present invention;
fig. 4 is a flowchart of a fault detection method for an electronic actuator according to a third embodiment of the present invention;
fig. 5 is a structural diagram of a fault detection apparatus for an electronic actuator according to a fourth embodiment of the present invention;
fig. 6 is a schematic diagram of a hardware structure of an electronic control device according to a fifth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in further detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.
It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings. Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Fig. 1 is a schematic diagram of the wiring of two identical electronic control units to one and the same electronic actuator in a prior art engine with redundant functions. Referring to fig. 1, an electronic control unit 1 is a main electronic control unit, an electronic control unit 2 is a standby electronic control unit, high-side pins of the electronic control unit 1 and the electronic control unit 2 are connected to one end of an electronic actuator, and low-side pins of the electronic control unit 1 and the electronic control unit 2 are connected to the other end of the electronic actuator.
If the electronic actuator is driven by the electronic control unit 1, the electronic control unit 2 will not drive any more, and if the open-circuit fault occurs at the wiring harness close to the electronic control unit 2, for example, at points a and b in fig. 1, the electronic control unit 2 will not detect the open-circuit fault.
If the electronic actuator is driven by the electronic control unit 2, the electronic control unit 1 will not do any driving, and if the open-circuit fault occurs at the wiring harness close to the electronic control unit 1, for example, at points c and d in fig. 1, the electronic control unit 2 will not detect the open-circuit fault.
In summary, when the ecu 2 has a fault but is not detected, the electronic actuator cannot be normally driven by the channel after the ecu switches, so that the engine cannot normally operate. Based on the above-mentioned drawbacks of the prior art, embodiments of the present invention provide the following fault detection method for an electronic actuator to solve the above-mentioned technical problems.
Example one
Fig. 2 is a flowchart of a method for detecting a fault of an electronic actuator according to an embodiment of the present invention, where the embodiment is applicable to a case where an electronic actuator connected to two identical electronic control units simultaneously detects a fault, and the method may be executed by a fault detection apparatus of the electronic actuator, and the apparatus may be implemented in a form of software and/or hardware. The method specifically comprises the following steps:
and S110, after the T15 is electrified, controlling a standby electronic control unit to drive an electronic actuator, and detecting whether a line close to the standby electronic control unit has a fault.
The electronic actuator is an actuator which receives the standby electronic control unit and the main electronic control unit in the current vehicle at the same time. The current vehicle is a vehicle with an engine with a redundant function, and the embodiment does not limit other properties of the specific vehicle, namely the current vehicle can be a hybrid vehicle or a fuel vehicle and the like.
Optionally, the electronic actuator is an oil injector or an oil amount calculating unit, that is, the oil injector is connected to the actuators of the standby electronic control unit and the main electronic control unit in the vehicle at the same time, and the oil amount calculating unit is connected to the actuators of the standby electronic control unit and the main electronic control unit in the vehicle at the same time.
Specifically, after T15 is powered on, the standby electronic control unit is controlled to drive the electronic actuator, that is, the standby electronic control unit provides a driving instruction to the electronic actuator, where the driving instruction is used to drive the electronic actuator to operate, but the operation of driving the electronic actuator does not cause the electronic actuator to complete the working state. When the electronic actuator is the oil injector, the oil injector is driven by the standby electronic control unit to realize one-time short power-on time, the short power-on time does not enable the valve core of the oil injector to act so as to cause the fuel oil to be injected into the cylinder, but can detect whether a circuit close to the standby electronic control unit has a fault or not; similarly, when the electronic actuator is an oil quantity calculating unit, the oil quantity calculating unit is driven to a target duty ratio through the standby electronic control unit, the duty ratio does not enable the oil quantity calculating unit to act so as to calculate the oil quantity of the vehicle, and whether a fault exists in a line close to the standby electronic control unit or not can be detected.
Further, when the standby electronic control unit is controlled to drive the electronic actuator, the method further comprises the following steps: and controlling the main electronic control unit not to drive.
Specifically, after the T15 is powered on, the standby electronic control unit is controlled to drive the electronic actuator, the main electronic control unit is controlled not to be driven, and whether a fault exists in a line close to the standby electronic control unit is detected.
And S120, controlling a main electronic control unit to drive the electronic actuator, and detecting whether a line close to the main electronic control unit has a fault.
Specifically, after T15 is powered on, the main electronic control unit is controlled to drive the electronic actuator, that is, a driving instruction is provided to the electronic actuator through the main electronic control unit, and the driving instruction is used to drive the electronic actuator to operate, but the operation of driving the electronic actuator does not cause the electronic actuator to complete the working state. When the electronic actuator is a fuel injector, the fuel injector is driven by the main electronic control unit to realize N times of short power-on time, wherein N is a positive integer greater than 1, the short power-on time does not enable a valve core of the fuel injector to act so as to cause fuel to be injected into a cylinder, but can detect whether a circuit close to the main electronic control unit has a fault; similarly, when the electronic actuator is the oil quantity calculating unit, the main electronic control unit drives the oil quantity calculating unit according to the required oil quantity, and the required oil quantity does not enable the oil quantity calculating unit to act and further calculate the oil quantity of the vehicle, but can detect whether a fault exists on a line close to the main electronic control unit.
Further, when the main electronic control unit is controlled to drive the electronic actuator, the method further comprises the following steps: and controlling the standby electronic control unit not to be driven.
Specifically, a main electronic control unit is controlled to drive the electronic actuator, the standby electronic control unit is controlled not to be driven, and whether a fault exists in a line close to the main electronic control unit is detected.
In this embodiment, the execution sequence of step S110 and step S120 is not limited to the order before and after execution, and after T15 is powered on, the execution sequence of step S110 and step S120 may be optionally set according to the specific implementation logic of the vehicle electronic actuator.
For example, when the electronic actuator is an injector, since the injector does not start the actual injection process in the actual logic of the vehicle, step S110 and step S120 may be implemented by selecting any execution sequence, that is, step S110 may be executed first and then step S120 is executed, or step S120 may be executed first and then step S110 is executed.
That is, when the electronic actuator is an injector, the line fault detection of the standby electronic control unit may be performed first and then the line fault detection of the main electronic control unit may be performed, or the line fault detection of the main electronic control unit may be performed first and then the line fault detection of the standby electronic control unit may be performed, and the order of the line fault detection of the standby electronic control unit and the line fault detection of the main electronic control unit may not be limited.
When the electronic actuator is an oil amount metering unit, since the oil amount metering unit does not start the engine when it needs to detect the fault of the electronic control unit in the actual logic of the vehicle, for the line fault detection of the standby electronic control unit and the main electronic control unit corresponding to the oil amount metering unit, it is necessary to perform the line fault detection of the standby electronic control unit first and then perform the line fault detection of the main electronic control unit, that is, perform step S110 first and then perform step S120.
S130, determining fault state information of the electronic actuator according to the detected results of whether the line close to the standby electronic control unit has a fault or not and whether the line close to the main electronic control unit has a fault or not.
The fault state information of the electronic actuator comprises that the electronic actuator is in a non-fault state or the electronic actuator is in a fault state.
Further, determining the fault status information of the electronic actuator according to the detected results of whether the line close to the standby electronic control unit has a fault and whether the line close to the main electronic control unit has a fault includes: and if the situation that no fault exists in the line close to the standby electronic control unit and the line close to the main electronic control unit is detected, determining that the fault state information of the electronic actuator is that the electronic actuator is in a non-fault state.
And if the fault does not exist in the line close to the standby electronic control unit and the fault exists in the line close to the main electronic control unit, determining that the fault state information of the electronic actuator is that the electronic actuator is in a fault state.
And if the fault exists in the line close to the standby electronic control unit or the line close to the main electronic control unit, determining that the fault state information of the electronic actuator is that the electronic actuator is in a fault state.
The electronic actuator in the failure state includes that the electronic actuator and the spare electronic control unit or the main control unit have a failure or other reasons which may cause the failure.
On the basis of the above embodiment, the engine is started after it is determined that the electronic actuator is in the no-fault state.
According to the technical scheme of the embodiment of the invention, after T15 is electrified, the standby electronic control unit is controlled to drive the electronic actuator, and whether a fault exists in a line close to the standby electronic control unit is detected; controlling a main electronic control unit to drive the electronic actuator, and detecting whether a line close to the main electronic control unit has a fault; and determining fault state information of the electronic actuator according to the detected results of whether the line close to the standby electronic control unit has a fault or not and whether the line close to the main electronic control unit has a fault or not. The problem that whether the electronic control unit has faults or not before the engine is started in the prior art can not be accurately detected is solved, so that the faults of open circuit, ground short circuit and power short circuit can be detected on the premise that the electronic actuator normally works, and the safe and reliable continuous work of the engine is guaranteed.
Example two
Fig. 3 is a flowchart of a fault detection method for an electronic actuator according to a second embodiment of the present invention, which is optimized based on the second embodiment.
Correspondingly, the method for detecting the fault of the electronic actuator in the embodiment specifically includes:
s210, after the T15 is electrified, controlling a standby electronic control unit to drive an electronic actuator, controlling the main electronic control unit not to drive, and detecting whether a line close to the standby electronic control unit has a fault.
For example, when the electronic actuator is an oil injector, the oil injector is driven by the standby electronic control unit to realize a short power-on time, the short power-on time does not enable an oil injector valve core to act to further cause fuel to be injected into a cylinder, and the main electronic control unit does not drive, namely does not act at all, but can detect whether a fault exists in a circuit close to the standby electronic control unit.
When the electronic actuator is an oil quantity calculating unit, the oil quantity calculating unit is driven to a target duty ratio through the standby electronic control unit, the target duty ratio does not enable the oil quantity calculating unit to act so as to calculate the oil quantity of the vehicle, the main electronic control unit does not drive, namely the main electronic control unit does not act, and whether a line close to the standby electronic control unit has a fault or not can be detected.
Optionally, the target duty ratio may be 5%, which is not limited in this embodiment, and the target duty ratio may be selectively set by a person skilled in the art according to an actual situation.
And S220, controlling a main electronic control unit to drive the electronic actuator, controlling the standby electronic control unit not to drive, and detecting whether a line close to the main electronic control unit has a fault.
For example, when the electronic actuator is an injector, the injector is driven by the main electronic control unit for N times of short power-on time, where N is a positive integer greater than 1, the short power-on time does not cause the injector valve element to act and thus fuel to be injected into the cylinder, and the standby electronic control unit does not drive, that is, the standby electronic control unit does not act, but can detect whether a fault exists in a line close to the main electronic control unit.
Similarly, when the electronic actuator is the oil quantity calculating unit, the main electronic control unit drives the oil quantity calculating unit according to the required oil quantity, the required oil quantity does not enable the oil quantity calculating unit to act and further calculate the oil quantity of the vehicle, the standby electronic control unit does not drive, namely, the standby electronic control unit does not act, and whether a fault exists in a line close to the main electronic control unit or not can be detected.
And S230, determining fault state information of the electronic actuator according to the detected results of whether the line close to the standby electronic control unit has a fault or not and whether the line close to the main electronic control unit has a fault or not.
Specifically, if it is detected that there is no fault in the line close to the standby electronic control unit and there is no fault in the line close to the main electronic control unit, it is determined that the fault state information of the electronic actuator is that the electronic actuator is in a no-fault state.
Further, the engine is started after the electronic actuator is determined to be in the non-fault state.
And if the situation that no fault exists in the line close to the standby electronic control unit and the fault exists in the line close to the main electronic control unit is detected, determining that the fault state information of the electronic actuator is that the electronic actuator is in a fault state.
And if the fault exists in the line close to the standby electronic control unit or the line close to the main electronic control unit, determining that the fault state information of the electronic actuator is that the electronic actuator is in a fault state.
According to the technical scheme of the embodiment of the invention, the fault detection method of the electronic actuator solves the problem of fault detection of the same actuator driven by two same electronic control units, particularly aims at fault diagnosis of an oil sprayer and an oil quantity metering unit which are simultaneously connected with the same electronic control unit at present, and simultaneously, for an engine with a redundancy function, a standby electronic control unit can detect faults of normal work, open circuit, ground short circuit and power short circuit, so that the condition that the engine is switched to the standby electronic control unit to work normally after the sea is avoided, and the working continuity of controlled equipment is ensured.
EXAMPLE III
Fig. 4 is a flowchart of a method for detecting a fault of an electronic actuator according to a third embodiment of the present invention. The technical scheme of the embodiment of the invention is further optimized on the basis of the embodiment. The method for detecting the fault of the electronic actuator in the embodiment specifically comprises the following steps:
and S310, when the T15 is electrified.
And S320, controlling the standby electronic control unit to drive the electronic actuator, and controlling the main electronic control unit not to drive.
S330, detecting whether a line close to the standby electronic control unit has a fault, if so, executing a step S370, and if not, executing a step S340.
And S340, controlling the main electronic control unit to drive the electronic actuator, and controlling the standby electronic control unit not to drive.
And S350, detecting whether a line close to the main electronic control unit has a fault or not, if so, executing a step S370, and if not, executing a step S360.
And S360, determining that the fault state information of the electronic actuator is that the electronic actuator is in a fault-free state, and starting the engine.
And S370, determining the fault state information of the electronic actuator as that the electronic actuator is in a fault state.
Example four
Fig. 5 is a structural diagram of a failure detection device for an electronic actuator according to a fourth embodiment of the present invention, which is applicable to a case where failure detection is performed on an electronic actuator connected to two identical electronic control units at the same time.
As shown in fig. 5, the failure detection device of the electronic actuator includes: a backup failure detection module 410, a primary failure detection module 420, and a failure status determination module 430, wherein:
a standby fault detection module 410, configured to control a standby electronic control unit to drive an electronic actuator after T15 is powered on, and detect whether a fault exists in a line close to the standby electronic control unit;
a main fault detection module 420, configured to control a main electronic control unit to drive the electronic actuator, and detect whether a fault exists in a line close to the main electronic control unit;
and a fault state determination module 430, configured to determine fault state information of the electronic actuator according to a result of whether a fault exists in the line close to the standby electronic control unit and whether a fault exists in the line close to the main electronic control unit.
In the fault detection device for the electronic actuator of the embodiment, after T15 is powered on, the standby electronic control unit is controlled to drive the electronic actuator, and whether a fault exists in a line close to the standby electronic control unit is detected; controlling a main electronic control unit to drive the electronic actuator, and detecting whether a line close to the main electronic control unit has a fault; and determining fault state information of the electronic actuator according to the detected results of whether the line close to the standby electronic control unit has a fault or not and whether the line close to the main electronic control unit has a fault or not. The problem that whether the electronic control unit has faults or not before the engine is started in the prior art can not be accurately detected is solved, so that the faults of open circuit, ground short circuit and power short circuit can be detected on the premise that the electronic actuator normally works, and the safe and reliable continuous work of the engine is guaranteed.
On the basis of the above embodiments, when controlling the standby electronic control unit to drive the electronic actuator, the method further includes:
and controlling the main electronic control unit not to drive.
On the basis of the above embodiments, when the main electronic control unit is controlled to drive the electronic actuator, the method further includes:
and controlling the standby electronic control unit not to be driven.
On the basis of the above embodiments, determining the fault status information of the electronic actuator according to the detected results of whether the line close to the standby electronic control unit has a fault and whether the line close to the main electronic control unit has a fault includes:
and if the situation that no fault exists in the line close to the standby electronic control unit and the line close to the main electronic control unit is detected, determining that the fault state information of the electronic actuator is that the electronic actuator is in a non-fault state.
On the basis of the above embodiments, the method further includes:
after determining that the electronic actuator is in a non-fault state, starting the engine.
On the basis of the above embodiments, determining the fault status information of the electronic actuator according to the detected results of whether the line close to the standby electronic control unit has a fault and whether the line close to the main electronic control unit has a fault includes:
and if the fault exists in the line close to the standby electronic control unit or the line close to the main electronic control unit, determining that the fault state information of the electronic actuator is that the electronic actuator is in a fault state.
On the basis of the above embodiments, the electronic actuator is an oil injector or an oil quantity calculating unit.
The fault detection device for the electronic actuator provided by each embodiment can execute the fault detection method for the electronic actuator provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of executing the fault detection method for the electronic actuator.
EXAMPLE five
Fig. 6 is a schematic structural diagram of an electronic control apparatus according to a fifth embodiment of the present invention, as shown in fig. 6, the electronic control apparatus includes a processor 510, a memory 520, an input device 530, and an output device 540; the number of the processors 510 in the electric control device may be one or more, and one processor 510 is taken as an example in fig. 6; the processor 510, the memory 520, the input device 530 and the output device 540 in the electronic control apparatus may be connected by a bus or other means, and the bus connection is exemplified in fig. 6.
The memory 520 is a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the fault detection method of the electronic actuator in the embodiment of the present invention (for example, the standby fault detection module 410, the main fault detection module 420, and the fault status determination module 430 in the fault detection apparatus of the electronic actuator). The processor 510 executes various functional applications and data processing of the electronic control device by executing software programs, instructions and modules stored in the memory 520, that is, implements the above-described fault detection method for the electronic actuator.
The memory 520 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 520 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 520 can further include memory located remotely from the processor 510, which can be connected to the electronically controlled device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 530 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the electric control apparatus. The output device 540 may include a display device such as a display screen.
Example six
An embodiment of the present invention further provides a storage medium containing computer-executable instructions, where the computer-executable instructions are executed by a computer processor to perform a method for detecting a fault of an electronic actuator, where the method for detecting a fault of an electronic actuator includes:
when T15 is electrified, controlling a standby electronic control unit to drive an electronic actuator, and detecting whether a line close to the standby electronic control unit has a fault;
controlling a main electronic control unit to drive the electronic actuator, and detecting whether a line close to the main electronic control unit has a fault;
and determining fault state information of the electronic actuator according to the detected results of whether the line close to the standby electronic control unit has a fault or not and whether the line close to the main electronic control unit has a fault or not.
Of course, the storage medium containing the computer-executable instructions provided by the embodiments of the present invention is not limited to the method operations described above, and may also perform related operations in the method for detecting a fault of an electronic actuator provided by any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the fault detection device for an electronic actuator, the included units and modules are merely divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be realized; in addition, the specific names of the functional units are only for the convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method of fault detection for an electronic actuator, comprising:
when T15 is electrified, controlling a standby electronic control unit to drive an electronic actuator, and detecting whether a line close to the standby electronic control unit has a fault;
controlling a main electronic control unit to drive the electronic actuator, and detecting whether a line close to the main electronic control unit has a fault;
determining fault state information of the electronic actuator according to the detected results of whether the line close to the standby electronic control unit has a fault or not and whether the line close to the main electronic control unit has a fault or not;
the control backup electronic control unit drives the electronic actuator, including:
the standby electronic control unit drives the electronic actuator to act, but the action of driving the electronic actuator does not cause the electronic actuator to complete the working state;
the control main electronic control unit drives the electronic actuator, and comprises:
the electronic actuator is driven to act through the main electronic control unit, but the action of driving the electronic actuator does not cause the electronic actuator to complete the working state.
2. The method for detecting a failure of an electronic actuator according to claim 1, wherein, when controlling the standby electronic control unit to drive the electronic actuator, the method further comprises:
and controlling the main electronic control unit not to drive.
3. The method for detecting a failure of an electronic actuator according to claim 1, wherein, when controlling a main electronic control unit to drive the electronic actuator, the method further comprises:
and controlling the standby electronic control unit not to be driven.
4. The method for detecting a failure of an electronic actuator according to claim 1, wherein determining the failure status information of the electronic actuator based on the results of detecting whether there is a failure in the line close to the standby electronic control unit and whether there is a failure in the line close to the main electronic control unit includes:
and if the situation that no fault exists in the line close to the standby electronic control unit and the line close to the main electronic control unit is detected, determining that the fault state information of the electronic actuator is that the electronic actuator is in a non-fault state.
5. The method of detecting a failure of an electronic actuator according to claim 4, further comprising:
after determining that the electronic actuator is in a non-fault state, starting the engine.
6. The method for detecting a failure of an electronic actuator according to claim 1, wherein determining the failure status information of the electronic actuator based on the results of detecting whether there is a failure in the line close to the standby electronic control unit and whether there is a failure in the line close to the main electronic control unit includes:
and if the fault exists in the line close to the standby electronic control unit or the line close to the main electronic control unit, determining that the fault state information of the electronic actuator is that the electronic actuator is in a fault state.
7. The method of detecting a failure of an electronic actuator according to claim 1, wherein the electronic actuator is a fuel injector or a fuel amount calculation unit.
8. A failure detection device for an electronic actuator, comprising:
the standby fault detection module is used for controlling the standby electronic control unit to drive the electronic actuator and detecting whether a line close to the standby electronic control unit has a fault or not after the T15 is electrified;
the main fault detection module is used for controlling a main electronic control unit to drive the electronic actuator and detecting whether a line close to the main electronic control unit has a fault;
the fault state determining module is used for determining fault state information of the electronic actuator according to the detected results of whether the line close to the standby electronic control unit has a fault or not and whether the line close to the main electronic control unit has a fault or not;
the control backup electronic control unit drives the electronic actuator, including:
the standby electronic control unit drives the electronic actuator to act, but the action of driving the electronic actuator does not cause the electronic actuator to complete the working state;
the control main electronic control unit drives the electronic actuator, and comprises:
the electronic actuator is driven to act through the main electronic control unit, but the action of driving the electronic actuator does not cause the electronic actuator to complete the working state.
9. An electric control apparatus, characterized in that the electric control apparatus comprises:
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the method of fault detection for an electronic actuator of any of claims 1-7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a method of fault detection of an electronic actuator according to any one of claims 1 to 7.
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