CN117905821A - Automobile friction plate abrasion prediction and alarm method, system and vehicle - Google Patents
Automobile friction plate abrasion prediction and alarm method, system and vehicle Download PDFInfo
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- CN117905821A CN117905821A CN202311681688.XA CN202311681688A CN117905821A CN 117905821 A CN117905821 A CN 117905821A CN 202311681688 A CN202311681688 A CN 202311681688A CN 117905821 A CN117905821 A CN 117905821A
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- 238000005299 abrasion Methods 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000013178 mathematical model Methods 0.000 claims description 16
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 3
- 238000004590 computer program Methods 0.000 description 5
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- 238000010168 coupling process Methods 0.000 description 3
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- 238000012423 maintenance Methods 0.000 description 3
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/001—Temperature
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Abstract
The invention discloses a method, a system and a vehicle for estimating and alarming the abrasion of an automobile friction plate, wherein the estimating method comprises the following steps: estimating the temperature of the brake disc to obtain a target temperature of the brake disc; estimating the weight of the vehicle to obtain a target weight of the vehicle; estimating the dragging moment to obtain a target dragging moment; and searching the target brake disc temperature, the target vehicle weight and the target dragging moment from a preset friction plate abrasion amount meter by taking the target brake disc temperature, the target vehicle weight and the target dragging moment as input parameters to obtain the abrasion amount of the corresponding friction plate. The alarm method is to obtain the target abrasion loss through the estimation method and alarm according to the target abrasion loss. Corresponding prediction system, alarm system and vehicle are also disclosed. According to the invention, the abrasion loss of the friction plate is indirectly estimated in an indirect estimation mode through the abrasion loss meter of the friction plate and by using a table look-up mode. And a sensor is not needed to directly measure the abrasion loss, so that the reliability is improved. The invention is mainly used in the technical field of automobiles.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an automobile friction plate abrasion prediction and alarm method, an automobile friction plate abrasion prediction and alarm system and an automobile.
Background
In the current industry, the judgment of whether a friction plate needs to be replaced depends on the alarm of a wear alarm. Both the electronic wear alarm and the mechanical wear alarm when the friction plate reaches the wear limit, and both the mechanical wear alarm and the electronic wear alarm have cost consumption (maintenance cost and the cost of the alarm itself). Moreover, the wear alarm is used for alarming, and the alarming mode is also limited by the reliability of the wear alarm. When the abrasion alarm itself has a problem, it is difficult to reliably alarm the friction plate. Therefore, how to improve the reliability of the alarm of the abrasion condition of the friction plate is a subject of urgent study in the industry.
Disclosure of Invention
The invention provides a method, a system and a vehicle for estimating and alarming the abrasion of an automobile friction plate, which are used for solving one or more technical problems in the prior art and at least providing a beneficial selection or creation condition.
The invention provides a method for estimating the abrasion of an automobile friction plate, which comprises the following steps: estimating the temperature of the brake disc to obtain a target temperature of the brake disc; estimating the weight of the vehicle to obtain a target weight of the vehicle; estimating the dragging moment to obtain a target dragging moment; and searching the target brake disc temperature, the target vehicle weight and the target dragging moment from a preset friction plate abrasion amount meter by taking the target brake disc temperature, the target vehicle weight and the target dragging moment as input parameters to obtain the abrasion amount of the corresponding friction plate.
Further, the estimating the temperature of the brake disc to obtain the target temperature of the brake disc specifically includes: calculating a target brake disc temperature through a first mathematical model, wherein the first mathematical model is as follows: t is the target brake disc temperature, M is the whole car mass, V is the car speed, M is the brake disc friction ring mass, and C is the specific heat capacity of the friction plate.
Further, the estimating the vehicle weight to obtain the target vehicle weight specifically includes: calculating through a second mathematical model to obtain the target vehicle weight, wherein the second mathematical model is as follows: M is denoted as target vehicle weight, C p1 is denoted as braking capacity of the front caliper, C p2 is denoted as braking capacity of the rear caliper, P is denoted as wheel cylinder pressure, R is denoted as tire rolling radius, and a is denoted as vehicle deceleration.
Further, the predicting the dragging moment to obtain the target dragging moment specifically includes: and obtaining the current wheel cylinder pressure and the current vehicle speed, and obtaining the drag torque of the corresponding brake caliper from a preset drag torque curve by taking the obtained wheel cylinder pressure and the obtained vehicle speed as input parameters, wherein the drag torque is the target drag torque.
On the other hand, the method for alarming the abrasion of the automobile friction plate is provided, the abrasion loss of the friction plate obtained by the method for estimating the abrasion loss of the automobile friction plate in any one of the technical schemes is obtained, and the abrasion loss is recorded as a target abrasion loss; obtaining the residual thickness of the friction plate according to the target abrasion loss; and outputting an alarm signal when the residual thickness of the friction plate is smaller than the effective thickness of the friction plate.
Further, the obtaining the remaining thickness of the friction plate according to the target wear amount specifically includes: and obtaining the pre-stored initial thickness of the friction plate, and performing difference operation on the initial thickness of the friction plate and the target abrasion loss to obtain the residual thickness of the friction plate.
Further, the output alarm signal is: and displaying an alarm signal mark in the vehicle-mounted human-computer interaction interface.
In another aspect, an automotive friction plate wear prediction system is provided, comprising: the device comprises a brake disc temperature estimation module, a vehicle weight estimation module, a dragging moment estimation module and a wear amount estimation module; the brake disc temperature estimation module is used for estimating the temperature of the brake disc to obtain a target brake disc temperature; the vehicle weight estimating module is used for estimating the vehicle weight to obtain a target vehicle weight; the dragging moment estimating module is used for estimating the dragging moment to obtain a target dragging moment; the abrasion loss estimating module is used for searching and obtaining the abrasion loss of the corresponding friction plate from a preset friction plate abrasion loss meter by taking the target brake disc temperature, the target vehicle weight and the target dragging moment as input parameters.
In another aspect, an automotive friction plate wear warning system is provided, comprising: an acquisition module and an alarm module; the acquisition module is used for acquiring a target abrasion loss, wherein the target abrasion loss is the abrasion loss obtained by the automobile friction plate abrasion estimation system in the technical scheme; the alarm module is used for obtaining the residual thickness of the friction plate according to the target abrasion loss; and outputting an alarm signal when the residual thickness of the friction plate is smaller than the effective thickness of the friction plate.
On the other hand, a vehicle is provided, and the vehicle is integrated with the automobile friction plate wear estimation system or the automobile friction plate wear alarm system in the technical scheme.
The invention has at least the following beneficial effects: the invention utilizes the indirect relation between the temperature of the brake disc, the vehicle weight and the dragging torque and the abrasion loss of the friction plate in an indirect prediction mode. The abrasion loss of the friction plate is indirectly estimated by a table look-up mode through a friction plate abrasion loss meter which shows the relation through a test in advance. A sensor is not required to directly measure the amount of wear, so that insufficient reliability or an increase in maintenance cost due to the sensor is avoided. Meanwhile, the automobile friction plate abrasion alarming method, the automobile friction plate abrasion estimating system, the automobile friction plate alarming estimating system and the automobile have similar beneficial effects of the automobile friction plate abrasion estimating method, and the automobile friction plate abrasion alarming method, the automobile friction plate abrasion estimating system and the automobile have similar beneficial effects.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and do not limit the invention.
FIG. 1 is a flow chart of steps of a method for estimating wear of an automotive friction plate;
FIG. 2 is a flow chart of steps of an automotive friction plate wear warning method;
FIG. 3 is a schematic diagram of a system architecture of an automotive friction plate wear prediction system;
FIG. 4 is a schematic system configuration of an automotive friction plate wear warning system.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It should be noted that although functional block diagrams are depicted as block diagrams, and logical sequences are shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the block diagrams in the system. The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Referring to fig. 1, fig. 1 is a flowchart illustrating steps of a method for estimating wear of a friction plate of an automobile.
The method can be executed through an intelligent system, and the intelligent system can be an on-board intelligent system. When the method is executed, the method can be realized by the following steps:
and step 1, estimating the temperature of the brake disc to obtain the target temperature of the brake disc.
And 2, estimating the weight of the vehicle to obtain the target weight of the vehicle.
And 3, predicting the dragging moment to obtain a target dragging moment.
And 4, searching a preset friction plate abrasion amount meter by taking the target brake disc temperature, the target vehicle weight and the target dragging moment as input parameters to obtain the abrasion amount of the corresponding friction plate.
It should be noted that, the steps 1,2 and 3 are not in a specific order, that is, the steps 1,2 and 3 may be performed in parallel or may be performed in a disordered order.
In this embodiment, when the vehicle-mounted intelligent system needs to estimate the current wear amount of the automobile friction plate, three parameters need to be obtained, where the three parameters are respectively: brake disc temperature, vehicle weight and drag torque. Thus, the on-board intelligent system obtains the brake disc temperature by performing step 1. For ease of description, the resulting brake disc temperature will be referred to as the target brake disc temperature. And (3) the vehicle-mounted intelligent system obtains the vehicle weight by executing the step (2). For convenience of description, the resulting vehicle weight will be referred to as a target vehicle weight. The vehicle-mounted intelligent system obtains the dragging moment by executing the step 3. For convenience of description, the resulting drag torque is referred to as the target drag torque.
After the three parameters of target brake disc temperature, target vehicle weight and target drag torque are obtained. The vehicle-mounted intelligent system can inquire in the friction plate abrasion amount meter based on the target brake disc temperature, the target car weight and the target drag torque to obtain the abrasion amount of the friction plate. The friction plate abrasion quantity meter records the relation between three parameters of brake disc temperature, vehicle weight and dragging moment obtained in advance through experiments and the abrasion quantity of the friction plate. By inquiring the combination of different values of the three parameters, the corresponding abrasion loss of the friction plate can be obtained.
The invention utilizes the indirect relation between the temperature of the brake disc, the vehicle weight and the dragging torque and the abrasion loss of the friction plate in an indirect prediction mode. The abrasion loss of the friction plate is indirectly estimated by a table look-up mode through a friction plate abrasion loss meter which shows the relation through a test in advance. A sensor is not required to directly measure the amount of wear, so that insufficient reliability or an increase in maintenance cost due to the sensor is avoided.
For a method of estimating the brake disc temperature, in some further embodiments, a first mathematical model is used to estimate the brake disc temperature. Wherein the first mathematical model is:
；
In the first mathematical model, T is denoted as target brake disc temperature, M is denoted as vehicle mass, V is denoted as vehicle speed, n is denoted as brake disc friction ring mass, and C is denoted as specific heat capacity of the friction plate.
When the vehicle-mounted intelligent system needs to estimate the temperature of the brake disc, the vehicle-mounted intelligent system can acquire first-off data through a vehicle-mounted related sensor or acquire desired data through preset parameters. For example, the vehicle-mounted intelligent system can determine the whole vehicle quality M through the self-contained preset parameters. The vehicle-mounted intelligent system can acquire the vehicle speed V through a vehicle speed related sensor. The vehicle-mounted intelligent system can determine the mass n of the friction ring of the brake disc through preset parameters. The vehicle-mounted intelligent system can determine the specific heat capacity C of the friction plate through the preset parameters. The manner of acquiring the respective parameters is merely an example, and is not limited thereto.
After the parameters are obtained, the vehicle-mounted intelligent system can correspondingly substitute the parameters into the first mathematical model, so that the target brake disc temperature T is obtained.
For the estimation of the vehicle weight, in some further embodiments, a second mathematical model is used to estimate the vehicle weight. Wherein the second mathematical model is:
；
In the second mathematical model, m is denoted as the target vehicle weight, C p1 is denoted as the braking capacity of the front caliper, C p2 is denoted as the braking capacity of the rear caliper, P is denoted as the wheel cylinder pressure, R is denoted as the tire rolling radius, and a is denoted as the vehicle deceleration.
When the vehicle weight needs to be estimated, the vehicle-mounted intelligent system can acquire first-off data through a vehicle-mounted related sensor or acquire desired data through preset parameters. For example, the on-board intelligent system may determine the braking capability C p1 of the front caliper by preset parameters. The on-board intelligent system can determine the braking capability C p2 of the rear brake caliper through preset parameters. The in-vehicle intelligent system may determine the wheel cylinder pressure P through a wheel cylinder-related sensor. The on-board intelligent system can determine the tire rolling radius R by preset parameters. The vehicle deceleration a may be determined by the on-board intelligent system via a vehicle deceleration dependent sensor. The manner of acquiring the respective parameters is merely an example, and is not limited thereto.
After the vehicle-mounted intelligent system obtains the parameters, the parameters can be correspondingly substituted into the second mathematical model, so that the target vehicle weight m is obtained.
For the prediction of drag torque, in some further embodiments, the on-board intelligence system may determine through a pre-set drag torque profile. The drag torque curve is the relation between the wheel cylinder pressure, the vehicle speed and the drag torque of the corresponding brake caliper. The drag torque curve can be used for measuring drag torque of the corresponding brake caliper on a bench in advance under different wheel cylinder pressures and vehicle speeds and fitting the drag torque curve into a curve, and the curve is integrated in the local area of the vehicle-mounted intelligent system.
The vehicle-mounted intelligent system obtains corresponding values through obtaining the current wheel cylinder pressure and the current vehicle speed. And then, the drag torque of the corresponding brake caliper is obtained through curve analysis by calling a pre-stored drag torque curve.
After the wear amount of the friction plate is obtained, the vehicle-mounted intelligent system can know the current wear amount of the friction plate. When the friction plate is worn to a certain degree, the driving safety is affected. When the friction plate has high abrasion degree, a certain alarm is necessary.
Referring to fig. 2, fig. 2 is a flow chart of steps of a method for warning of wear of an automotive friction plate. The application also provides an automobile friction plate abrasion alarming method which can be executed through the vehicle-mounted intelligent system so as to realize the function of alarming according to the abrasion of the friction plate.
When the vehicle-mounted intelligent system is executing the alarm function, the vehicle-mounted intelligent system needs to know the current abrasion loss of the friction plate. The method for knowing the abrasion loss of the friction plate can be estimated by the method for estimating the abrasion loss of the friction plate of the automobile according to any one of the specific embodiments, so as to obtain the abrasion loss. For convenience of description, the abrasion amount is noted as a target abrasion amount. The obtained target wear amount CAN be stored in the CAN of the vehicle, and when the vehicle-mounted intelligent system needs to obtain the target wear amount, the vehicle-mounted intelligent system CAN obtain the target wear amount through the CAN of the vehicle.
After the target wear amount is obtained, the vehicle-mounted intelligent system calculates according to the target wear amount. Thus obtaining the residual thickness of the current friction plate. When the remaining thickness of the friction plate is less than the effective thickness of the friction plate, the friction plate is currently considered to be in a state of risky wear. At this time, the vehicle-mounted intelligent system needs to output an alarm signal to remind the user.
For how the remaining thickness of the friction plate is calculated, in some further embodiments, the obtaining the remaining thickness of the friction plate according to the target wear amount specifically includes: and obtaining the pre-stored initial thickness of the friction plate, and performing difference operation on the initial thickness of the friction plate and the target abrasion loss to obtain the residual thickness of the friction plate.
Of course, the estimation of the wear amount of the automobile friction plate has a certain period or condition. In some further embodiments, the wear of the friction plate of the vehicle is estimated after each brake pedal actuation is completed. That is, the amount of wear of the automobile friction plate is estimated once every time the brake pedal of the vehicle is depressed. By this, the accuracy of the estimation of the wear amount of the friction plate can be improved.
For the presentation manner of the alarm signal, in some further specific embodiments, the output alarm signal may be displayed in the form of a mark in the vehicle-mounted man-machine interaction interface.
Referring to fig. 3, fig. 3 is a schematic system configuration of an automobile friction plate wear estimation system.
The application also provides an automobile friction plate abrasion estimating system, wherein the estimating system comprises: the device comprises a brake disc temperature estimation module, a vehicle weight estimation module, a dragging moment estimation module and a wear amount estimation module.
The brake disc temperature estimation module is used for estimating the temperature of the brake disc to obtain a target brake disc temperature; the vehicle weight estimating module is used for estimating the vehicle weight to obtain a target vehicle weight; the dragging moment estimating module is used for estimating the dragging moment to obtain a target dragging moment; the abrasion loss estimating module is used for searching and obtaining the abrasion loss of the corresponding friction plate from a preset friction plate abrasion loss meter by taking the target brake disc temperature, the target vehicle weight and the target dragging moment as input parameters.
In this embodiment, when the current wear amount of the friction plate of the automobile needs to be estimated, three parameters need to be obtained, where the three parameters are respectively: brake disc temperature, vehicle weight and drag torque. The target brake disc temperature can be obtained through a brake disc temperature estimation module for the brake disc temperature. And for the vehicle weight, obtaining the target vehicle weight through the estimating module. And for the dragging torque, the target dragging torque can be obtained through a dragging torque estimation module. After the parameters are obtained, the parameters are passed as inputs to a wear prediction module. And obtaining the abrasion loss of the automobile friction plate through the abrasion loss prediction module.
Referring to fig. 4, fig. 4 is a schematic system configuration diagram of an automotive friction plate wear warning system.
The invention also provides an automobile friction plate abrasion alarm system, which comprises: an acquisition module and an alarm module; the acquisition module is used for acquiring a target abrasion loss, wherein the target abrasion loss is the abrasion loss obtained by the automobile friction plate abrasion estimation system in the specific embodiment; the alarm module is used for obtaining the residual thickness of the friction plate according to the target abrasion loss; and outputting an alarm signal when the residual thickness of the friction plate is smaller than the effective thickness of the friction plate.
The invention also provides a vehicle, wherein the vehicle is internally integrated with the automobile friction plate wear estimation system or the automobile friction plate wear alarm system according to any one of the specific embodiments.
In another aspect, the present application further provides a computer readable storage medium, in which a program executable by a processor is stored, where the program executable by the processor is configured to implement the method for estimating wear of a friction plate of an automobile or the method for alarming wear of a friction plate of an automobile according to any one of the above specific embodiments.
The embodiment of the application also discloses a computer program product, which comprises a computer program or computer instructions, wherein the computer program or the computer instructions are stored in a computer readable storage medium, a processor of the computer equipment reads the computer program or the computer instructions from the computer readable storage medium, and the processor executes the computer program or the computer instructions, so that the computer equipment executes the automobile friction plate wear estimation method or the automobile friction plate wear alarm method according to any embodiment.
The terms "first," "second," "third," "fourth," and the like in the description of the application and in the above figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
It should be understood that in the present application, "at least one (item)" means one or more, and "a plurality" means two or more. "and/or" for describing the association relationship of the association object, the representation may have three relationships, for example, "a and/or B" may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices, or units, which may be in electrical, mechanical, or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (Random Access Memory RAM), a magnetic disk, or an optical disk, etc., which can store program codes.
While the present application has been described in considerable detail and with particularity with respect to several described embodiments, it is not intended to be limited to any such detail or embodiments or any particular embodiment, but is to be considered as providing a broad interpretation of such claims by reference to the appended claims in light of the prior art and thus effectively covering the intended scope of the application. Furthermore, the foregoing description of the application has been presented in its embodiments contemplated by the inventors for the purpose of providing a useful description, and for the purposes of providing a non-essential modification of the application that may not be presently contemplated, may represent an equivalent modification of the application.
Claims (10)
1. The method for estimating the wear of the friction plate of the automobile is characterized by comprising the following steps of: estimating the temperature of the brake disc to obtain a target temperature of the brake disc; estimating the weight of the vehicle to obtain a target weight of the vehicle; estimating the dragging moment to obtain a target dragging moment; and searching the target brake disc temperature, the target vehicle weight and the target dragging moment from a preset friction plate abrasion amount meter by taking the target brake disc temperature, the target vehicle weight and the target dragging moment as input parameters to obtain the abrasion amount of the corresponding friction plate.
2. The method for estimating wear of a friction plate of an automobile according to claim 1, wherein estimating the temperature of the brake disc to obtain the target temperature of the brake disc specifically comprises: calculating a target brake disc temperature through a first mathematical model, wherein the first mathematical model is as follows: t is the target brake disc temperature, M is the whole car mass, V is the car speed, M is the brake disc friction ring mass, and C is the specific heat capacity of the friction plate.
3. The method for estimating wear of a friction plate of an automobile according to claim 1, wherein estimating the weight of the automobile to obtain the target weight of the automobile comprises: calculating through a second mathematical model to obtain the target vehicle weight, wherein the second mathematical model is as follows: M is denoted as target vehicle weight, C p1 is denoted as braking capacity of the front caliper, C p2 is denoted as braking capacity of the rear caliper, P is denoted as wheel cylinder pressure, R is denoted as tire rolling radius, and a is denoted as vehicle deceleration.
4. The method for estimating wear of an automotive friction plate according to claim 1, wherein the estimating the drag torque to obtain the target drag torque specifically comprises: and obtaining the current wheel cylinder pressure and the current vehicle speed, and obtaining the drag torque of the corresponding brake caliper from a preset drag torque curve by taking the obtained wheel cylinder pressure and the obtained vehicle speed as input parameters, wherein the drag torque is the target drag torque.
5. An automobile friction plate abrasion alarming method, which is characterized in that the abrasion loss of the friction plate obtained by the automobile friction plate abrasion estimating method according to any one of claims 1 to 4 is obtained, and the abrasion loss is recorded as a target abrasion loss; obtaining the residual thickness of the friction plate according to the target abrasion loss; and outputting an alarm signal when the residual thickness of the friction plate is smaller than the effective thickness of the friction plate.
6. The method for alarming wear of a friction plate of an automobile according to claim 5, wherein the obtaining the remaining thickness of the friction plate according to the target wear amount specifically comprises: and obtaining the pre-stored initial thickness of the friction plate, and performing difference operation on the initial thickness of the friction plate and the target abrasion loss to obtain the residual thickness of the friction plate.
7. The method for alarming wear of a friction plate of an automobile according to claim 5, wherein the output alarm signal is: and displaying an alarm signal mark in the vehicle-mounted human-computer interaction interface.
8. An automotive friction plate wear prediction system, comprising: the device comprises a brake disc temperature estimation module, a vehicle weight estimation module, a dragging moment estimation module and a wear amount estimation module;
The brake disc temperature estimation module is used for estimating the temperature of the brake disc to obtain a target brake disc temperature;
The vehicle weight estimating module is used for estimating the vehicle weight to obtain a target vehicle weight;
the dragging moment estimating module is used for estimating the dragging moment to obtain a target dragging moment;
the abrasion loss estimating module is used for searching and obtaining the abrasion loss of the corresponding friction plate from a preset friction plate abrasion loss meter by taking the target brake disc temperature, the target vehicle weight and the target dragging moment as input parameters.
9. An automotive friction plate wear warning system, comprising: an acquisition module and an alarm module; the acquisition module is used for acquiring a target abrasion loss, wherein the target abrasion loss is the abrasion loss obtained by the automobile friction plate abrasion estimating system according to claim 8; the alarm module is used for obtaining the residual thickness of the friction plate according to the target abrasion loss; and outputting an alarm signal when the residual thickness of the friction plate is smaller than the effective thickness of the friction plate.
10. A vehicle incorporating the automotive friction plate wear prediction system of claim 8 or the automotive friction plate wear warning system of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311681688.XA CN117905821A (en) | 2023-12-08 | 2023-12-08 | Automobile friction plate abrasion prediction and alarm method, system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311681688.XA CN117905821A (en) | 2023-12-08 | 2023-12-08 | Automobile friction plate abrasion prediction and alarm method, system and vehicle |
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| CN117905821A true CN117905821A (en) | 2024-04-19 |
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| CN202311681688.XA Pending CN117905821A (en) | 2023-12-08 | 2023-12-08 | Automobile friction plate abrasion prediction and alarm method, system and vehicle |
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| CN (1) | CN117905821A (en) |
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- 2023-12-08 CN CN202311681688.XA patent/CN117905821A/en active Pending
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