CN114152429B - H-bridge driving valve pre-diagnosis method, device, equipment and readable storage medium - Google Patents
H-bridge driving valve pre-diagnosis method, device, equipment and readable storage medium Download PDFInfo
- Publication number
- CN114152429B CN114152429B CN202111440438.8A CN202111440438A CN114152429B CN 114152429 B CN114152429 B CN 114152429B CN 202111440438 A CN202111440438 A CN 202111440438A CN 114152429 B CN114152429 B CN 114152429B
- Authority
- CN
- China
- Prior art keywords
- duty ratio
- energy
- energy interval
- driving
- engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 70
- 238000003745 diagnosis Methods 0.000 title claims abstract description 40
- 238000003860 storage Methods 0.000 title claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 30
- 238000000638 solvent extraction Methods 0.000 claims abstract description 5
- 238000004590 computer program Methods 0.000 claims description 17
- 230000002159 abnormal effect Effects 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 238000002405 diagnostic procedure Methods 0.000 claims 1
- 230000002411 adverse Effects 0.000 abstract description 10
- 230000000670 limiting effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 6
- 230000006866 deterioration Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
Abstract
The application relates to a pre-diagnosis method, a device, equipment and a readable storage medium for an H-bridge driving valve, which relate to the technical field of fault diagnosis of a vehicle driving valve and comprise the steps of carrying out energy partitioning on a total section of a driving duty ratio of the H-bridge, detecting an energy section of the H-bridge where the real-time driving duty ratio is located in an operation period from starting to stopping of an engine, starting a timer of the energy section of the real-time driving duty ratio to time, obtaining duration of the energy section where the real-time driving duty ratio is located, and keeping timers of other energy sections in a pause timing state; the duty ratio of the duration corresponding to each energy interval and the total running duration of the engine is calculated respectively, and the duty ratio corresponding to each energy interval is obtained; and diagnosing whether the driving valve is in the damage process according to the magnitude relation between the duty ratio value and the duty ratio threshold value. The method and the device can diagnose the possibility of failure of the driving valve before the driving valve is not damaged completely, so as to avoid adverse consequences of over-limit emission, engine torque limiting and the like of the engine.
Description
Technical Field
The application relates to the technical field of fault diagnosis of vehicle driving valves, in particular to a method, a device and equipment for pre-diagnosing an H-bridge driving valve and a readable storage medium.
Background
With the rapid development of science and technology, automobile manufacturing technology and economic level, global automobile yield and quality rise year by year, wherein the automobile industry in China goes through the process of high-speed growth-explosion-new normal steady growth, and is now in the stage of steady rise, and automobiles become indispensable transportation means, and meanwhile, people pay more attention to the safety, comfort and the like of the automobiles. The driving valves such as a throttle valve, an EGR (Exhaust Gas recirculation) valve and the like which are key components of an automobile engine electric control system have key effects on improving the dynamic property, the economical efficiency, the safety and the riding comfort of the automobile, and once the automobile engine electric control system breaks down, the normal operation of the whole automobile, even the safety of the whole automobile, can be influenced.
For example, EGR functions to suppress NO by controlling recirculation of an appropriate amount of engine-out exhaust gas to an intake pipe and mixing with fresh air taken in the intake pipe, and by diluting the fresh air, lowering peak combustion temperature and combustion pressure X Thereby achieving the purpose of reducing the emission of pollutant NO X The purpose of (2); thus, once the EGR valve fails, normal operation of the engine will be affected, particularly at idle, low speeds, low loads, and when the engine is running cold, and when full load (throttle fully open) demands engine dynamics, the recirculated exhaust gas will have a severe impact on the engine performance. It follows that it is important to diagnose and discover in time whether there is a malfunction of the drive valve for the engine or the whole vehicle.
In the existing diagnosis method of the H-bridge driving valve, open circuit and short circuit faults of the motor are mainly diagnosed according to current and voltage of the motor, so that whether the driving valve has faults or not is determined. For example, when the detected current is smaller than a certain threshold value, the line is considered to be open, and the fault of the drive valve is indicated; for another example, when the motor is driven, the fault of the short circuit of the positive electrode and the negative electrode to the ground or the power supply can be diagnosed by detecting the voltage of the positive electrode and the negative electrode, so that the fault of the driving valve is further indicated.
However, since the above-mentioned diagnosis method can only determine that the driving valve has a fault by diagnosing a line fault such as an open circuit or a short circuit of the motor, a fault such as a stuck fault or a slow response fault, the fault cannot be detected in advance in the process of damaging the driving valve, and in this case, the driving valve is always completely damaged, which may cause adverse effects such as excessive emission, limited torque of the engine, and the like, and the driving valve needs to be immediately maintained, which will adversely affect both normal operation of the vehicle and subjective experience of the customer. Damage to the actuator valve often has a process, for example, when the motor coil ages, the line contact resistance increases, which results in reduced driving capability, or mechanical wear of the shaft, carbon deposition on the valve stem valve plate, etc., which also results in increased rotational resistance of the actuator valve. Therefore, how to diagnose the driving valve in advance before the driving valve is completely damaged becomes the problem to be solved currently, and further, adverse effects such as excessive emission, engine torque limitation and the like caused by failure warning only when the driving valve is completely damaged are effectively avoided.
Disclosure of Invention
The application provides a pre-diagnosis method, device and equipment for an H-bridge driving valve and a readable storage medium, which are used for solving the problems of emission overrun, engine torque limitation and other adverse consequences caused by the fact that the prior diagnosis cannot be performed before the driving valve is not damaged completely in the related art.
In a first aspect, a method for pre-diagnosing an H-bridge driven valve is provided, comprising the steps of:
carrying out energy partitioning on the total interval of the driving duty ratio of the H bridge to obtain a plurality of energy intervals;
in the running period from the starting of the engine to the stopping of the engine, detecting an energy interval in which a real-time driving duty ratio of an H bridge is positioned, starting a timer of the energy interval in which the real-time driving duty ratio is positioned for timing, obtaining the duration of the energy interval in which the real-time driving duty ratio is positioned, and enabling the timers of other energy intervals to be in a pause timing state;
the duty ratio of the duration corresponding to each energy interval and the total running duration of the engine is calculated respectively, and the duty ratio corresponding to each energy interval is obtained;
and diagnosing whether the driving valve is in the damage process according to the size relation between the duty ratio value and the duty ratio threshold value.
Based on the above technical solution, the plurality of energy intervals include a first energy interval, a second energy interval and a third energy interval, an upper limit value of the first energy interval is equal to a lower limit value of the second energy interval, an upper limit value of the second energy interval is equal to a lower limit value of the third energy interval, a timer of the energy interval where the real-time driving duty ratio is located is started to perform timing, so as to obtain a duration that the real-time driving duty ratio is located in the energy interval, and timers of other energy intervals are in a pause timing state, including:
When the real-time driving duty ratio is in the first energy interval, starting a first timer of the first energy interval to start timing to obtain a first time length, wherein a second timer of the second energy interval and a third timer of the third energy interval are in a pause timing state;
when the real-time driving duty ratio is in the second energy interval, starting a second timer of the second energy interval to start timing to obtain a second duration, wherein the first timer and the third timer are in a pause timing state;
and when the real-time driving duty ratio is in the third energy interval, starting a third timer of the third energy interval to start timing to obtain a third duration, wherein the first timer and the second timer are in a pause timing state.
Based on the above technical solution, the calculating the duty ratio of the duration corresponding to each energy interval and the total running duration of the engine to obtain the duty ratio corresponding to each energy interval includes:
and respectively calculating the duty ratio of the first time length, the second time length and the third time length to the total operation time length of the engine, and correspondingly obtaining a first duty ratio, a second duty ratio and a third duty ratio.
Based on the technical scheme, before the step of diagnosing whether the driving valve is in the damage process according to the magnitude relation between the duty ratio value and the duty ratio threshold value, the method further comprises the following steps:
repeatedly executing N times in the running period from the starting to the stopping of the engine, detecting the energy interval of the real-time driving duty ratio of the H bridge, starting a timer of the energy interval of the real-time driving duty ratio to count time, obtaining the duration of the energy interval of the real-time driving duty ratio, and respectively calculating the duty ratio of the duration corresponding to each energy interval and the total running duration of the engine, wherein N is a positive integer, and N is the first duty ratio, N is the second duty ratio and N is the third duty ratio.
Based on the above technical solution, the diagnosing whether the driving valve is in the process of damage according to the magnitude relation between the duty ratio and the duty ratio threshold includes:
detecting whether at least M first duty ratios exist among the N first duty ratios and are smaller than a first duty ratio threshold or whether at least P third duty ratios exist among the N third duty ratios and are larger than a third duty ratio threshold, wherein M is a positive integer and is smaller than or equal to N, and P is a positive integer and is smaller than or equal to N;
If at least M first duty ratios exist in the N first duty ratios and are smaller than a first duty ratio threshold or at least P third duty ratios exist in the N third duty ratios and are larger than a third duty ratio threshold, diagnosing that the driving valve is in the damage process and outputting early warning information.
Based on the technical scheme, the method further comprises the following steps:
acquiring a first duty ratio, a second duty ratio and a third duty ratio of each vehicle comprising the same type of driving valve;
respectively calculating the average value of the first duty ratio, the average value of the second duty ratio and the average value of the third duty ratio;
and diagnosing whether the driving valve of each vehicle is abnormal or not according to the magnitude relation between the first duty ratio and the average value of the first duty ratio, the magnitude relation between the second duty ratio and the average value of the second duty ratio and the magnitude relation between the third duty ratio and the average value of the third duty ratio of each vehicle.
Based on the technical scheme, before the step of calculating the duty ratio of the duration corresponding to each energy interval and the total running duration of the engine, the method further comprises the following steps:
detecting whether the total operation time of the engine is greater than or equal to a time threshold;
and if the total running time length of the engine is greater than or equal to the time length threshold, executing the step of respectively calculating the duty ratio of the time length corresponding to each energy interval and the total running time length of the engine.
In a second aspect, there is provided an H-bridge driven valve pre-diagnosis apparatus comprising the steps of:
a partition unit for performing energy partition on a total interval of driving duty ratios of the H-bridge to obtain a plurality of energy intervals;
the detection unit is used for detecting an energy interval where a real-time driving duty ratio of the H bridge is located in an operation period from starting to stopping of the engine, starting a timer of the energy interval where the real-time driving duty ratio is located to count time, obtaining duration of the energy interval where the real-time driving duty ratio is located, and enabling the timers of other energy intervals to be in a pause timing state;
the calculating unit is used for calculating the duty ratio of the duration corresponding to each energy interval and the total running duration of the engine respectively to obtain the duty ratio corresponding to each energy interval;
and the diagnosis unit is used for diagnosing whether the driving valve is in the damage process according to the magnitude relation between the duty ratio value and the duty ratio threshold value.
In a third aspect, there is provided an H-bridge driven valve pre-diagnosis apparatus comprising: the system comprises a memory and a processor, wherein at least one instruction is stored in the memory, and the at least one instruction is loaded and executed by the processor so as to realize the H-bridge driving valve pre-diagnosis method.
In a fourth aspect, a computer readable storage medium is provided, the computer storage medium storing a computer program which, when executed by a processor, implements the aforementioned H-bridge driven valve pre-diagnosis method.
The beneficial effects that technical scheme that this application provided brought include: the possibility of failure of the driving valve can be diagnosed before the driving valve is not completely damaged, so that adverse consequences such as over-limit emission and engine torque limiting of an engine are avoided.
The application provides a pre-diagnosis method, device and equipment for an H-bridge driving valve and a readable storage medium, wherein the method comprises the steps of carrying out energy partitioning on a total interval of a driving duty ratio of an H-bridge to obtain a plurality of energy intervals; in the running period from the starting of the engine to the stopping of the engine, detecting an energy interval in which a real-time driving duty ratio of an H bridge is positioned, starting a timer of the energy interval in which the real-time driving duty ratio is positioned for timing, obtaining the duration of the energy interval in which the real-time driving duty ratio is positioned, and enabling the timers of other energy intervals to be in a pause timing state; the duty ratio of the duration corresponding to each energy interval and the total running duration of the engine is calculated respectively, and the duty ratio corresponding to each energy interval is obtained; and diagnosing whether the driving valve is in the damage process according to the size relation between the duty ratio value and the duty ratio threshold value. Because different drive duty ratios represent the driving capability of the driving valve, the real-time driving condition of the driving valve is monitored by monitoring the duty ratio relation between the duration time of the driving duty ratio in different energy intervals and the total running time of the engine, so that the real-time driving capability of the driving valve is effectively judged, and once the real-time driving capability of the driving valve is abnormal, the trend of deterioration of the driving valve can be indicated, namely, the driving valve can be diagnosed in advance to possibly fail in the damage process, therefore, the driving valve can be diagnosed to have the possibility of failure before the driving valve is not completely damaged, the pre-diagnosis of the driving valve is realized, and further, the adverse consequences such as excessive emission, engine torque limit and the like of the engine are avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a pre-diagnosis method for an H-bridge driving valve according to an embodiment of the present application;
FIG. 2 is a schematic diagram of driving duty energy partition provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of an H-bridge driving valve pre-diagnosis device according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an H-bridge driving valve pre-diagnosis device according to an embodiment of the present application.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.
The embodiment of the application provides a pre-diagnosis method, device and equipment for an H-bridge driving valve and a readable storage medium, which can solve the problems of emission overrun, engine torque limit and other adverse consequences caused by the fact that the prior diagnosis cannot be performed before the driving valve is not damaged completely in the related art.
Fig. 1 is a pre-diagnosis method for an H-bridge driving valve according to an embodiment of the present application, including the following steps:
step S10: carrying out energy partitioning on the total interval of the driving duty ratio of the H bridge to obtain a plurality of energy intervals;
further, in the embodiment of the present application, the plurality of energy intervals includes a first energy interval, a second energy interval, and a third energy interval, an upper limit value of the first energy interval is equal to a lower limit value of the second energy interval, and an upper limit value of the second energy interval is equal to a lower limit value of the third energy interval.
For an H-bridge driven valve, the valve is illustratively fully open when the spring is in a relaxed state, open when the motor is rotating in a forward direction, and closed when the motor is rotating in a reverse direction; when the feedback voltage of the valve position is stabilized at a certain value, the valve plate has a trend of moving towards the full-open position because the spring is in a stretching state, so that in order to maintain the valve to be stable, the motor should be reversed and has a duty ratio with a certain size, and the pulling force of the spring can be overcome to maintain the stability of the valve plate. Thus, different drive duty cycles may represent different drive capacities of the drive valve. For example, when the driving capability of the motor coil is weakened due to aging, or the valve rotation resistance is increased due to mechanical abrasion, carbon deposition and the like, the damage cause of the H-bridge can be deduced by analyzing the driving energy distribution condition of the H-bridge.
Thus, referring to fig. 2, the total interval of the driving duty of the H-bridge is divided into a low energy interval (i.e., a first energy interval), a medium energy interval (i.e., a second energy interval), and a high energy interval (i.e., a third energy interval) in the present embodiment. For example, an interval in which the absolute value of the driving duty is less than or equal to 20% is set as a low-energy region, that is, the low-energy region is [0, 20% ]; setting an interval of which the absolute value of the driving duty ratio is more than 20% and less than 40% as a medium energy region, namely the medium energy region is (20%, 40%); the interval in which the absolute value of the driving duty is 40% or more is set as the high-energy region, that is, the high-energy region is [40%,100% ]. It should be noted that the specific division of the above energy intervals is merely an example, and may be set according to actual requirements, which is not limited herein.
Step S20: in the running period from the starting of the engine to the stopping of the engine, detecting an energy interval in which a real-time driving duty ratio of an H bridge is positioned, starting a timer of the energy interval in which the real-time driving duty ratio is positioned for timing, obtaining the duration of the energy interval in which the real-time driving duty ratio is positioned, and enabling the timers of other energy intervals to be in a pause timing state;
Further, in this embodiment of the present application, starting the timer of the energy interval where the real-time driving duty ratio is located to count, to obtain a duration of the energy interval where the real-time driving duty ratio is located, where the timers of other energy intervals are in a pause timing state, including:
when the real-time driving duty ratio is in the first energy interval, starting a first timer of the first energy interval to start timing to obtain a first time length, wherein a second timer of the second energy interval and a third timer of the third energy interval are in a pause timing state;
when the real-time driving duty ratio is in the second energy interval, starting a second timer of the second energy interval to start timing to obtain a second duration, wherein the first timer and the third timer are in a pause timing state;
and when the real-time driving duty ratio is in the third energy interval, starting a third timer of the third energy interval to start timing to obtain a third duration, wherein the first timer and the second timer are in a pause timing state.
For example, a timer is set in each energy interval, and is used for timing the duration of the driving duty ratio in a certain energy interval. For example, when the engine is started and the absolute value of the current driving duty ratio is 16%, the engine is in a first energy interval, at this time, a first timer of the first energy interval is awakened to start timing, and a second timer of the second energy interval and a third timer of the third energy interval are both in a pause timing state; assuming that the engine outputs at the driving duty ratio of 26% instead of the driving duty ratio for 10 minutes after the period of time of 16% of the driving duty ratio output, then the first timer stops counting (the period of time counted by the first timer is 10 minutes) at this time, the third timer remains in the state of suspended counting, and the second timer is awakened to count; assuming that the engine outputs at the driving duty ratio of 18% after the output time lasts for 5 minutes at the driving duty ratio of 26%, stopping timing by the second timer (the time counted by the second timer is 5 minutes), keeping the third timer in a state of suspending timing, and waking up the first timer to continue timing, namely continuing timing on the basis of 10 minutes; if the engine is stopped after continuously outputting the drive duty ratio of 18% for 35 minutes (i.e., the engine is stopped), the first timer stops counting and is turned off, and the counted time period of the first timer is 45 minutes.
It follows that during the period of operation from start-up to shut-down of the engine, the first duration is 45, the second duration is 5 minutes, the third duration is 0, and the total operating duration of the engine is 50 minutes.
Step S30: the duty ratio of the duration corresponding to each energy interval and the total running duration of the engine is calculated respectively, and the duty ratio corresponding to each energy interval is obtained;
specifically, in the embodiment of the application, the duty ratio of the first duration, the second duration and the third duration to the total operation duration of the engine is calculated respectively, and the first duty ratio, the second duty ratio and the third duty ratio are obtained correspondingly.
Further, in the embodiment of the present application, before the step of calculating the ratio of the duration corresponding to each energy interval to the total operation duration of the engine, the method further includes the following steps:
detecting whether the total operation time of the engine is greater than or equal to a time threshold;
if the total running time length of the engine is greater than or equal to the time length threshold, executing the step of calculating the ratio of the time length corresponding to each energy interval to the total running time length of the engine
For example, in order to prevent invalid data, before calculating the duty ratio, the total operation duration of the engine may be judged, that is, if the total operation duration of the engine is less than a certain duration threshold, it is indicated that the engine may be in an abnormal working state, and at this time, the duty ratio is not required to be calculated; and if the total operation time of the engine is equal to or greater than a certain threshold value, the engine is indicated to work normally, and the calculation of the duty ratio can be performed at the moment.
Taking an example that the first time length is 40, the second time length is 5 minutes, the third time length is 0, the total operation time length of the engine is 50 minutes in the operation period from the start to the stop of the engine, the first occupation ratio of the first energy zone is 90%, the second occupation ratio of the second energy zone is 10%, the third occupation ratio of the third energy zone is 0, and the occupation ratio is stored in a permanent storage area of an ECU (Electronic Control Unit, an electronic control unit).
Further, in an embodiment of the present application, before the step of diagnosing whether the driving valve is in the process of damage according to the magnitude relation between the duty ratio value and the duty ratio threshold value, the method further includes:
repeatedly executing N times in the running period from the starting to the stopping of the engine, detecting the energy interval of the real-time driving duty ratio of the H bridge, starting a timer of the energy interval of the real-time driving duty ratio to count time, obtaining the duration of the energy interval of the real-time driving duty ratio, and respectively calculating the duty ratio of the duration corresponding to each energy interval and the total running duration of the engine, wherein N is a positive integer, and N is the first duty ratio, N is the second duty ratio and N is the third duty ratio.
For example, assuming that N is 10, it is assumed that the engine is operated 10 times, and in this embodiment of the present application, the first duty ratio, the second duty ratio, and the third duty ratio after each operation of the engine are all calculated, so that 10 first duty ratios, 10 second duty ratios, and 10 third duty ratios can be obtained, and each duty ratio is stored in the permanent storage area of the ECU. Wherein the permanent storage area can be set to store the occupancy value obtained after the last 10 engine operations.
Step S40: and diagnosing whether the driving valve is in the damage process according to the size relation between the duty ratio value and the duty ratio threshold value.
Further, in an embodiment of the present application, the diagnosing whether the driving valve is in a process of damage according to the magnitude relation between the duty ratio and the duty ratio threshold includes:
detecting whether at least M first duty ratios exist in the N first duty ratios and are smaller than a first duty ratio threshold or whether at least P third duty ratios exist in the N third duty ratios and are larger than a third duty ratio threshold, wherein M is a positive integer and is smaller than or equal to N, and P is a positive integer and is smaller than or equal to N;
if at least M first duty ratios exist in the N first duty ratios and are smaller than a first duty ratio threshold or at least P third duty ratios exist in the N third duty ratios and are larger than a third duty ratio threshold, diagnosing that the driving valve is in the damage process and outputting early warning information.
For example, taking N equal to 10, M equal to 5, and P equal to 5, the first duty cycle threshold is 75%, and the third duty cycle threshold is 5%, assume 10 first duty cycle values of 80%, 70%, 71%, 74%, 85%, 84%, 70%, 86%, 82%, 79%, respectively; 10 second ratios of 20%, 24%, 29%, 26%, 15%, 8%, 23.7%, 6.6%, 11%, 14.3%, respectively; 10 third ratio values are respectively 0, 6%, 0, 8%, 6.3%, 7.4%, 7% and 6.7%; because the number of more than 5% of the 10 third ratio values is 6, the number of the third ratio values is more than 5, which indicates that the driving energy of the driving valve is too high and the driving valve is possibly in a damage process, early warning information is output at the moment so as to remind a user to replace the valve in time.
Assume again that the 10 first ratios are 69%, 70%, 71%, 74%, 85%, 84%, 70%, 86%, 82%, 73%, respectively; the 10 second ratios are 31%, 27%, 29%, 26%, 15%, 8%, 23.7%, 6.6%, 11%, 23%, respectively; 10 third ratio values are respectively 0, 3%, 0, 8%, 6.3%, 7.4%, 7% and 4%; because the number of the 10 first occupying ratios is 6, which is less than 75 percent and is more than 5, the driving energy of the driving valve is too low, and the valve is possibly damaged, and early warning information is output at the moment so as to remind a user to replace the valve in time.
Therefore, the real-time driving condition of the driving valve is monitored by monitoring the duty ratio relation between the duration of the driving duty ratio in different energy intervals and the total running duration of the engine, the real-time driving capability of the driving valve is further effectively judged, and once the real-time driving capability of the driving valve is abnormal, the trend of deterioration of the driving valve can be described, namely, the driving valve is in a damage process, and the driving valve can be diagnosed in advance to possibly fail at the moment, so that the driving valve can be diagnosed to be possibly fail before the driving valve is not damaged completely, the pre-diagnosis of the driving valve is realized, and further, the adverse consequences such as excessive emission, engine torque limit and the like of the engine are avoided.
Further, in an embodiment of the present application, the method further includes the following steps:
acquiring a first duty ratio, a second duty ratio and a third duty ratio of each vehicle comprising the same type of driving valve;
respectively calculating the average value of the first duty ratio, the average value of the second duty ratio and the average value of the third duty ratio;
and diagnosing whether the driving valve of each vehicle is abnormal or not according to the magnitude relation between the first duty ratio and the average value of the first duty ratio, the magnitude relation between the second duty ratio and the average value of the second duty ratio and the magnitude relation between the third duty ratio and the average value of the third duty ratio of each vehicle.
In the embodiment of the application, the occupation ratio of the low energy area, the medium energy area and the high energy area of each vehicle containing the same type of driving valve can be obtained based on the internet big data, the average value of the low, medium and high energy output ratios of all the same type of vehicle valves in the market is calculated, the occupation ratio of each vehicle is compared with the average value, whether the abnormal condition exists in each vehicle is analyzed, if the abnormal condition exists, the abnormal condition can be fed back to an after-sales maintenance center, the after-sales maintenance center is reminded to focus on checking the driving valve, the driving valve with the problem is replaced in time, and the safety of the vehicle is further ensured.
Referring to fig. 3, the embodiment of the application further provides an H-bridge driving valve pre-diagnosis device, which includes the following steps:
a partition unit for performing energy partition on a total interval of driving duty ratios of the H-bridge to obtain a plurality of energy intervals;
the detection unit is used for detecting an energy interval where a real-time driving duty ratio of the H bridge is located in an operation period from starting to stopping of the engine, starting a timer of the energy interval where the real-time driving duty ratio is located to count time, obtaining duration of the energy interval where the real-time driving duty ratio is located, and enabling the timers of other energy intervals to be in a pause timing state;
The calculating unit is used for calculating the duty ratio of the duration corresponding to each energy interval and the total running duration of the engine respectively to obtain the duty ratio corresponding to each energy interval;
and the diagnosis unit is used for diagnosing whether the driving valve is in the damage process according to the magnitude relation between the duty ratio value and the duty ratio threshold value.
In the embodiment of the application, the partition unit, the detection unit, the calculation unit and the diagnosis unit are integrated into the ECU, and the real-time driving condition of the driving valve is monitored by monitoring the duty ratio relation between the duration time of the driving duty ratio in different energy intervals and the total operation time of the engine through the ECU, so that the real-time driving capability of the driving valve is effectively judged, and once the real-time driving capability of the driving valve is abnormal, the trend of deterioration of the driving valve can be indicated, namely, the driving valve is in the damage process, the driving valve can be diagnosed in advance at the moment to possibly fail, therefore, the possibility of failure of the driving valve can be diagnosed before the driving valve is not damaged completely, namely, the pre-diagnosis of the driving valve is realized, and further, the adverse consequences such as emission overrun, engine torque limit and the like of the engine are avoided.
Still further, in an embodiment of the present application, the plurality of energy intervals includes a first energy interval, a second energy interval, and a third energy interval, an upper limit value of the first energy interval is equal to a lower limit value of the second energy interval, an upper limit value of the second energy interval is equal to a lower limit value of the third energy interval, and the detection unit is specifically configured to:
When the real-time driving duty ratio is in the first energy interval, starting a first timer of the first energy interval to start timing to obtain a first time length, wherein a second timer of the second energy interval and a third timer of the third energy interval are in a pause timing state;
when the real-time driving duty ratio is in the second energy interval, starting a second timer of the second energy interval to start timing to obtain a second duration, wherein the first timer and the third timer are in a pause timing state;
and when the real-time driving duty ratio is in the third energy interval, starting a third timer of the third energy interval to start timing to obtain a third duration, wherein the first timer and the second timer are in a pause timing state.
Further, in an embodiment of the present application, the computing unit is specifically configured to:
and respectively calculating the duty ratio of the first time length, the second time length and the third time length to the total operation time length of the engine, and correspondingly obtaining a first duty ratio, a second duty ratio and a third duty ratio.
Still further, in an embodiment of the present application, the detecting unit and the calculating unit are further configured to:
Repeatedly executing N times in the running period from the starting to the stopping of the engine, detecting the energy interval of the real-time driving duty ratio of the H bridge, starting a timer of the energy interval of the real-time driving duty ratio to count time, obtaining the duration of the energy interval of the real-time driving duty ratio, and respectively calculating the duty ratio of the duration corresponding to each energy interval and the total running duration of the engine, wherein N is a positive integer, and N is the first duty ratio, N is the second duty ratio and N is the third duty ratio.
Further, in an embodiment of the present application, the diagnostic unit is specifically configured to:
detecting whether at least M first duty ratios exist among the N first duty ratios and are smaller than a first duty ratio threshold or whether at least P third duty ratios exist among the N third duty ratios and are larger than a third duty ratio threshold, wherein M is a positive integer and is smaller than or equal to N, and P is a positive integer and is smaller than or equal to N;
if at least M first duty ratios exist in the N first duty ratios and are smaller than a first duty ratio threshold or at least P third duty ratios exist in the N third duty ratios and are larger than a third duty ratio threshold, diagnosing that the driving valve is in the damage process and outputting early warning information.
Still further, in an embodiment of the present application, the diagnostic unit is further configured to:
acquiring a first duty ratio, a second duty ratio and a third duty ratio of each vehicle comprising the same type of driving valve;
respectively calculating the average value of the first duty ratio, the average value of the second duty ratio and the average value of the third duty ratio;
and diagnosing whether the driving valve of each vehicle is abnormal or not according to the magnitude relation between the first duty ratio and the average value of the first duty ratio, the magnitude relation between the second duty ratio and the average value of the second duty ratio and the magnitude relation between the third duty ratio and the average value of the third duty ratio of each vehicle.
Still further, in an embodiment of the present application, the detection unit is further configured to:
detecting whether the total operation time of the engine is greater than or equal to a time threshold;
and if the total running time length of the engine is greater than or equal to the time length threshold, executing the step of respectively calculating the duty ratio of the time length corresponding to each energy interval and the total running time length of the engine.
It should be noted that, for convenience and brevity of description, the specific working process of the above-described device and each unit may refer to the corresponding process in the foregoing embodiment of the H-bridge driving valve pre-diagnosis method, which is not described herein again.
The H-bridge driven valve pre-diagnosis apparatus provided in the above embodiment may be implemented in the form of a computer program that can be run on the H-bridge driven valve pre-diagnosis device as shown in fig. 4.
The embodiment of the application also provides an H-bridge driving valve pre-diagnosis device, which comprises: the system comprises a memory, a processor and a network interface which are connected through a system bus, wherein at least one instruction is stored in the memory, and the at least one instruction is loaded and executed by the processor so as to realize all or part of the steps of the H-bridge driving valve pre-diagnosis method.
Wherein the network interface is used for network communication, such as sending assigned tasks, etc. Those skilled in the art will appreciate that the structures shown in FIG. 4 are block diagrams only and do not constitute a limitation of the computer device on which the present aspects apply, and that a particular computer device may include more or less components than those shown, or may combine some of the components, or have a different arrangement of components.
The processor may be a CPU, but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field Programmable Gate Arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic device discrete hardware components, or the like. A general purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like, that is a control center of a computer device, with various interfaces and lines connecting various parts of the entire computer device.
The memory may be used to store computer programs and/or modules, and the processor implements various functions of the computer device by running or executing the computer programs and/or modules stored in the memory, and invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, application programs required for at least one function (such as a video playing function, an image playing function, etc.), and the like; the storage data area may store data (such as video data, image data, etc.) created according to the use of the cellular phone, etc. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, memory, plug-in hard disk, smart Media Card (SMC), secure Digital (SD) Card, flash Card (Flash Card), at least one disk storage device, flash memory device, or other volatile solid state storage device.
The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, all or part of the steps of the H-bridge driving valve pre-diagnosis method are realized.
The embodiments of the present application implement all or part of the above-described procedures, or may be implemented by a computer program that instructs related hardware to perform the steps of the above-described methods when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, executable files or in some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a USB flash disk, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a Read-only memory (ROM), a random access memory (RandomAccess memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the content of the computer readable medium can be appropriately increased or decreased according to the requirements of the jurisdiction's jurisdiction and the patent practice, for example, in some jurisdictions, the computer readable medium does not include electrical carrier signals and telecommunication signals according to the jurisdiction and the patent practice.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, server, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing numbers in the embodiments of the present application are merely for description, and do not represent advantages or disadvantages of the embodiments.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An H-bridge driven valve pre-diagnosis method is characterized by comprising the following steps:
carrying out energy partitioning on the total interval of the driving duty ratio of the H bridge to obtain a plurality of energy intervals;
in the running period from the starting of the engine to the stopping of the engine, detecting an energy interval in which a real-time driving duty ratio of an H bridge is positioned, starting a timer of the energy interval in which the real-time driving duty ratio is positioned for timing, obtaining the duration of the energy interval in which the real-time driving duty ratio is positioned, and enabling the timers of other energy intervals to be in a pause timing state;
the duty ratio of the duration corresponding to each energy interval and the total running duration of the engine is calculated respectively, and the duty ratio corresponding to each energy interval is obtained;
and diagnosing whether the driving valve is in the damage process according to the size relation between the duty ratio value and the duty ratio threshold value.
2. The H-bridge drive valve pre-diagnosis method according to claim 1, wherein the plurality of energy intervals includes a first energy interval, a second energy interval, and a third energy interval, an upper limit value of the first energy interval is equal to a lower limit value of the second energy interval, an upper limit value of the second energy interval is equal to a lower limit value of the third energy interval, the timer of the energy interval in which the real-time drive duty cycle is started is timed to obtain a duration of the energy interval in which the real-time drive duty cycle is located, and the timers of the other energy intervals are in a pause timing state, including:
When the real-time driving duty ratio is in the first energy interval, starting a first timer of the first energy interval to start timing to obtain a first time length, wherein a second timer of the second energy interval and a third timer of the third energy interval are in a pause timing state;
when the real-time driving duty ratio is in the second energy interval, starting a second timer of the second energy interval to start timing to obtain a second duration, wherein the first timer and the third timer are in a pause timing state;
and when the real-time driving duty ratio is in the third energy interval, starting a third timer of the third energy interval to start timing to obtain a third duration, wherein the first timer and the second timer are in a pause timing state.
3. The method for pre-diagnosing an H-bridge driving valve according to claim 2, wherein the calculating the duty ratio of the time period corresponding to each energy interval to the total operation time period of the engine to obtain the duty ratio corresponding to each energy interval includes:
and respectively calculating the duty ratio of the first time length, the second time length and the third time length to the total operation time length of the engine, and correspondingly obtaining a first duty ratio, a second duty ratio and a third duty ratio.
4. A method of pre-diagnosing an H-bridge actuated valve as claimed in claim 3, further comprising, prior to said step of diagnosing whether the actuated valve is in the process of being damaged based on said magnitude relationship of said duty cycle value to said duty cycle threshold value:
repeatedly executing N times in the running period from the starting to the stopping of the engine, detecting the energy interval of the real-time driving duty ratio of the H bridge, starting a timer of the energy interval of the real-time driving duty ratio to count time, obtaining the duration of the energy interval of the real-time driving duty ratio, and respectively calculating the duty ratio of the duration corresponding to each energy interval and the total running duration of the engine, wherein N is a positive integer, and N is the first duty ratio, N is the second duty ratio and N is the third duty ratio.
5. The H-bridge driven valve pre-diagnosis method according to claim 4, wherein said diagnosing whether the driven valve is in the process of being damaged according to the magnitude relation between the duty ratio value and the duty ratio threshold value comprises:
detecting whether at least M first duty ratios exist among the N first duty ratios and are smaller than a first duty ratio threshold or whether at least P third duty ratios exist among the N third duty ratios and are larger than a third duty ratio threshold, wherein M is a positive integer and is smaller than or equal to N, and P is a positive integer and is smaller than or equal to N;
If at least M first duty ratios exist in the N first duty ratios and are smaller than a first duty ratio threshold or at least P third duty ratios exist in the N third duty ratios and are larger than a third duty ratio threshold, diagnosing that the driving valve is in the damage process and outputting early warning information.
6. A method of pre-diagnosing an H-bridge actuated valve as claimed in claim 3, further comprising:
acquiring a first duty ratio, a second duty ratio and a third duty ratio of each vehicle comprising the same type of driving valve;
respectively calculating the average value of the first duty ratio, the average value of the second duty ratio and the average value of the third duty ratio;
and diagnosing whether the driving valve of each vehicle is abnormal or not according to the magnitude relation between the first duty ratio and the average value of the first duty ratio, the magnitude relation between the second duty ratio and the average value of the second duty ratio and the magnitude relation between the third duty ratio and the average value of the third duty ratio of each vehicle.
7. The H-bridge drive valve pre-diagnosis method according to claim 1, further comprising, before the step of calculating the duty ratio of the time period corresponding to each energy interval to the total operation time period of the engine, respectively:
detecting whether the total operation time of the engine is greater than or equal to a time threshold;
And if the total running time length of the engine is greater than or equal to the time length threshold, executing the step of respectively calculating the duty ratio of the time length corresponding to each energy interval and the total running time length of the engine.
8. An H-bridge driven valve pre-diagnosis apparatus, comprising the steps of:
a partition unit for performing energy partition on a total interval of driving duty ratios of the H-bridge to obtain a plurality of energy intervals;
the detection unit is used for detecting an energy interval where a real-time driving duty ratio of the H bridge is located in an operation period from starting to stopping of the engine, starting a timer of the energy interval where the real-time driving duty ratio is located to count time, obtaining duration of the energy interval where the real-time driving duty ratio is located, and enabling the timers of other energy intervals to be in a pause timing state;
the calculating unit is used for calculating the duty ratio of the duration corresponding to each energy interval and the total running duration of the engine respectively to obtain the duty ratio corresponding to each energy interval;
and the diagnosis unit is used for diagnosing whether the driving valve is in the damage process according to the magnitude relation between the duty ratio value and the duty ratio threshold value.
9. An H-bridge actuated valve pre-diagnostic apparatus comprising: a memory and a processor, the memory having stored therein at least one instruction that is loaded and executed by the processor to implement the H-bridge driven valve pre-diagnostic method of any one of claims 1 to 7.
10. A computer-readable storage medium, characterized by: the computer storage medium stores a computer program which, when executed by a processor, implements the H-bridge driven valve pre-diagnosis method of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111440438.8A CN114152429B (en) | 2021-11-30 | 2021-11-30 | H-bridge driving valve pre-diagnosis method, device, equipment and readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111440438.8A CN114152429B (en) | 2021-11-30 | 2021-11-30 | H-bridge driving valve pre-diagnosis method, device, equipment and readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114152429A CN114152429A (en) | 2022-03-08 |
| CN114152429B true CN114152429B (en) | 2024-02-02 |
Family
ID=80454998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111440438.8A Active CN114152429B (en) | 2021-11-30 | 2021-11-30 | H-bridge driving valve pre-diagnosis method, device, equipment and readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114152429B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62173366A (en) * | 1986-01-24 | 1987-07-30 | Fujitsu Ltd | Diagnostic system for electromagnetic valve drive circuit of antiskid device |
| CN1545650A (en) * | 2002-02-04 | 2004-11-10 | 株式会社博世汽车系统 | Load failure diagnosis method and apparatus and load failure processing method and apparatus |
| KR101439061B1 (en) * | 2013-11-05 | 2014-09-05 | 한전케이피에스 주식회사 | Spring washer calibration device for air operated valve actuator |
| CN105515457A (en) * | 2014-10-14 | 2016-04-20 | 北京谊安医疗系统股份有限公司 | Self-checking method of drive circuit of brushless direct-current motor and device |
| CN106370997A (en) * | 2016-08-31 | 2017-02-01 | 株洲易力达机电有限公司 | H-bridge driving circuit detection device and method in EPS system |
| CN107306036A (en) * | 2016-04-20 | 2017-10-31 | 雅马哈发动机动力产品株式会社 | Engine generator |
| JP2019184459A (en) * | 2018-04-12 | 2019-10-24 | 株式会社デンソーテン | Diagnosing device and diagnosing method |
| CN110925111A (en) * | 2019-12-13 | 2020-03-27 | 潍柴动力股份有限公司 | Throttle valve diagnosis method and device, control equipment and readable storage medium |
| CN111289883A (en) * | 2020-03-30 | 2020-06-16 | 重庆长安新能源汽车科技有限公司 | Open circuit detection circuit for H-bridge drive output |
| CN112255542A (en) * | 2020-09-30 | 2021-01-22 | 潍柴动力股份有限公司 | Fault diagnosis method and device for PWM (pulse-width modulation) driving load and driving system |
| CN112730931A (en) * | 2020-12-17 | 2021-04-30 | 潍柴动力股份有限公司 | Fault diagnosis method, apparatus, device and medium for PWM-driven load |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6460072B2 (en) * | 2016-09-27 | 2019-01-30 | トヨタ自動車株式会社 | Solenoid control device and diagnostic method |
| KR20220026736A (en) * | 2020-08-26 | 2022-03-07 | 현대자동차주식회사 | System and method for diagnosis of vehicle purge line |
-
2021
- 2021-11-30 CN CN202111440438.8A patent/CN114152429B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62173366A (en) * | 1986-01-24 | 1987-07-30 | Fujitsu Ltd | Diagnostic system for electromagnetic valve drive circuit of antiskid device |
| CN1545650A (en) * | 2002-02-04 | 2004-11-10 | 株式会社博世汽车系统 | Load failure diagnosis method and apparatus and load failure processing method and apparatus |
| KR101439061B1 (en) * | 2013-11-05 | 2014-09-05 | 한전케이피에스 주식회사 | Spring washer calibration device for air operated valve actuator |
| CN105515457A (en) * | 2014-10-14 | 2016-04-20 | 北京谊安医疗系统股份有限公司 | Self-checking method of drive circuit of brushless direct-current motor and device |
| CN107306036A (en) * | 2016-04-20 | 2017-10-31 | 雅马哈发动机动力产品株式会社 | Engine generator |
| CN106370997A (en) * | 2016-08-31 | 2017-02-01 | 株洲易力达机电有限公司 | H-bridge driving circuit detection device and method in EPS system |
| JP2019184459A (en) * | 2018-04-12 | 2019-10-24 | 株式会社デンソーテン | Diagnosing device and diagnosing method |
| CN110925111A (en) * | 2019-12-13 | 2020-03-27 | 潍柴动力股份有限公司 | Throttle valve diagnosis method and device, control equipment and readable storage medium |
| CN111289883A (en) * | 2020-03-30 | 2020-06-16 | 重庆长安新能源汽车科技有限公司 | Open circuit detection circuit for H-bridge drive output |
| CN112255542A (en) * | 2020-09-30 | 2021-01-22 | 潍柴动力股份有限公司 | Fault diagnosis method and device for PWM (pulse-width modulation) driving load and driving system |
| CN112730931A (en) * | 2020-12-17 | 2021-04-30 | 潍柴动力股份有限公司 | Fault diagnosis method, apparatus, device and medium for PWM-driven load |
Non-Patent Citations (2)
| Title |
|---|
| Data-driven valve diagnosis to increase the overall equipment effectiveness in process industry;Folmer, Jens and Schrüfer, Carolin and Fuchs, Julian and Vermum, Christian and Vogel-Heuser, Birgit;2016 IEEE 14th International Conference on Industrial Informatics (INDIN);1082-1087 * |
| EGR系统故障诊断研究;王科杰;周文华;聂飞;;机电工程(第02期);92-96 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114152429A (en) | 2022-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE112011102914B4 (en) | Control for regenerating an aftertreatment device in a vehicle with hybrid drive | |
| DE102009050002B4 (en) | Method, control module and system for reducing accessory drive belt slip | |
| JP2006322332A (en) | Failure detection method for starter drive circuit and economical running control device | |
| DE102016122871A1 (en) | Vehicle engine control system | |
| DE102008024955B3 (en) | Method for detecting a malfunction of a rail pressure sensor in a common rail injection system | |
| DE102012216351B4 (en) | SYSTEM AND PROCEDURE FOR DETERMINING WHEN A POWER MACHINE IN A HYBRID ELECTRIC VEHICLE HAS ABNORMALLY STOPPED | |
| JP2009030543A (en) | In-vehicle engine control device | |
| EP3255257A1 (en) | Internal combustion engine and exhaust-gas-component estimating method | |
| DE102015100971A1 (en) | Method and device for evaluating a starter motor for an internal combustion engine | |
| DE102013211543A1 (en) | Method for the aging and energy-efficient operation, in particular of a motor vehicle | |
| DE102012209046A1 (en) | A motor vehicle with system and method for controlling an electric power steering assist | |
| JP2009124787A (en) | Controller for hybrid vehicle | |
| CA2387250C (en) | System and method for monitoring locomotive operation | |
| JP3661606B2 (en) | Driving method of intermittent operation type internal combustion engine for vehicle | |
| DE112012006519T5 (en) | Power generation apparatus for a vehicle and power generation control method | |
| CN114152429B (en) | H-bridge driving valve pre-diagnosis method, device, equipment and readable storage medium | |
| CN106114495B (en) | A kind of hybrid vehicle and its engine halt control method | |
| CN114704400A (en) | Engine control method and device and storage medium | |
| US11789085B2 (en) | Battery diagnosis device, battery diagnosis method, non-transitory storage medium, and vehicle | |
| CN112172815B (en) | Vehicle and driving performance limiting control method for emission fault of vehicle | |
| DE112018004769T5 (en) | Internal combustion engine control system | |
| CN113489394A (en) | Control method and system for direct current generator driven by engine | |
| JP2012233422A (en) | Control device for internal combustion engine | |
| CN114263550B (en) | Desorption diagnosis method and device for hybrid electric vehicle, medium, monitor and vehicle | |
| CN113561958B (en) | Dynamic response diagnosis method and system for rear oxygen sensor of hybrid electric vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |