CN115199419B - Method and device for controlling engine rotation speed - Google Patents
Method and device for controlling engine rotation speed Download PDFInfo
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- CN115199419B CN115199419B CN202210727106.6A CN202210727106A CN115199419B CN 115199419 B CN115199419 B CN 115199419B CN 202210727106 A CN202210727106 A CN 202210727106A CN 115199419 B CN115199419 B CN 115199419B
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000012937 correction Methods 0.000 claims abstract description 199
- 230000008859 change Effects 0.000 claims abstract description 57
- 238000006073 displacement reaction Methods 0.000 claims description 50
- 238000012545 processing Methods 0.000 claims description 37
- 238000001914 filtration Methods 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/04—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving pumps
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The application provides a control method and a device for engine rotation speed, wherein the method comprises the following steps: firstly, receiving pressure information of a hydraulic pump in real time; then, in the case where the rate of change of the pressure information is greater than a predetermined threshold value, determining a target correction value based at least on the pressure information; and finally, correcting the rotating speed of the engine to the target rotating speed according to the target correction value. The engine receives the pressure information of the hydraulic pump in real time, at least determines a target correction value according to the pressure information under the condition that the change rate of the pressure information is larger than a preset threshold value, and corrects the rotating speed of the engine to the target rotating speed according to the target correction value, so that the rotating speed of the engine can be corrected directly according to the change of the pressure information, the rotating speed of the engine can be ensured to reach the target rotating speed faster, the problem that the engine is seriously lost or even extinguished due to larger pressure fluctuation in the prior art is avoided, and the stability of the engine is ensured to be better.
Description
Technical Field
The present application relates to the field of excavators, and more particularly, to a method for controlling engine speed, an apparatus thereof, a computer-readable storage medium, a processor, and an electronic device.
Background
In actual excavation operation of an excavator, a hydraulic system (a pump) can generate larger pressure fluctuation due to the influence of materials (such as stones), the fluctuation has randomness, so that a hydraulic pump needs to change the displacement frequently according to the pressure fluctuation to achieve the purpose of constant power control, the adjustment is often lagged due to the influence of a hardware structure, and the hydraulic system can give a larger load to an engine instantly, so that the engine is seriously lost and even is shut down.
The above information disclosed in the background section is only for enhancement of understanding of the background art from the technology described herein and, therefore, may contain some information that does not form the prior art that is already known in the country to a person of ordinary skill in the art.
Disclosure of Invention
The application mainly aims to provide a control method of engine speed, a device thereof, a computer readable storage medium, a processor and electronic equipment, so as to solve the problems of serious engine speed drop and even flameout caused by large pressure fluctuation in the prior art.
According to an aspect of an embodiment of the present invention, there is provided a control method of an engine speed, the method including: receiving pressure information of a hydraulic pump in real time; determining a target correction value based on at least the pressure information if the rate of change of the pressure information is greater than a predetermined threshold; and correcting the rotating speed of the engine to a target rotating speed according to the target correction value.
Optionally, correcting the rotation speed of the engine to a target rotation speed according to the target correction value includes: acquiring the rotating speed of the engine in real time to obtain a preset rotating speed; calculating the sum of the preset rotating speed and the target correction value to obtain a target rotating speed; and controlling the engine to rotate at the target rotating speed.
Optionally, determining the target correction value at least according to the pressure information includes: acquiring the rotating speed information of the engine, the torque information of the engine and the displacement information of the hydraulic pump in real time; and determining the target correction value according to the variation of the pressure information, the displacement information, the torque information and the rotating speed information.
Optionally, determining the target correction value according to the variation amount of the pressure information, the displacement information, the torque information, and the rotation speed information includes: determining a predetermined correction coefficient according to the variation of the pressure information, the displacement information, the torque information and the rotation speed information; performing predetermined processing on the predetermined correction coefficient to obtain a target correction coefficient, wherein the predetermined processing comprises at least one of delay processing and filtering processing; and determining the target correction value according to the target revision coefficient and a first corresponding relation, wherein the first corresponding relation is used for representing the relation between the revision coefficient and the correction value.
Optionally, determining a predetermined correction coefficient according to the variation amount of the pressure information, the displacement information, the torque information, and the rotation speed information includes: determining a first correction coefficient according to the variation of the pressure information, the displacement information and a second corresponding relation, wherein the second corresponding relation is used for representing the relation of the variation of the pressure information, the displacement information and the correction coefficient; determining a second correction coefficient according to the variation of the pressure information, the torque information and a third corresponding relation, wherein the third corresponding relation is used for representing the relation of the variation of the pressure information, the torque information and the correction coefficient; determining a third correction coefficient according to the variation of the pressure information, the rotation speed information and a fourth corresponding relation, wherein the fourth corresponding relation is used for representing the relation of the variation of the pressure information, the rotation speed information and the correction coefficient; and calculating the product of the first correction coefficient, the second correction coefficient and the third correction coefficient to obtain the preset correction coefficient.
Optionally, the target correction value is a positive number.
According to another aspect of the embodiment of the present invention, there is also provided a control device for an engine speed, the device including a receiving unit, a determining unit, and a correcting unit, wherein the receiving unit is configured to receive pressure information of a hydraulic pump in real time; the determining unit is used for determining a target correction value at least according to the pressure information under the condition that the change rate of the pressure information is larger than a preset threshold value; the correction unit is used for correcting the rotating speed of the engine to a target rotating speed according to the target correction value.
According to yet another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium including a stored program, wherein the program is for executing any one of the methods.
According to yet another aspect of an embodiment of the present invention, there is further provided a processor, where the processor is configured to execute a program, and where the program executes any of the methods.
According to yet another aspect of embodiments of the present invention, there is also provided an electronic device comprising one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing any of the methods.
In the method for controlling the engine speed, firstly, pressure information of a hydraulic pump is received in real time; then, in the case where the rate of change of the pressure information is greater than a predetermined threshold, determining a target correction value based at least on the pressure information; and finally, correcting the rotating speed of the engine to a target rotating speed according to the target correction value. Compared with the problem that the engine is seriously lost and even extinguished due to large pressure fluctuation in the prior art, the control method of the engine rotating speed of the application ensures that the engine rotating speed can reach the target rotating speed more quickly by receiving the pressure information of the hydraulic pump in real time, determining the target correction value at least according to the pressure information under the condition that the change rate of the pressure information is larger than the preset threshold value, and correcting the rotating speed of the engine to the target rotating speed according to the target correction value, so that the engine can correct the rotating speed directly according to the change of the pressure information, the problem that the engine is seriously lost and even extinguished due to large pressure fluctuation in the prior art is avoided, and the stability of the engine is better.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 shows a flow chart of a control method of engine speed according to an embodiment of the application;
FIG. 2 shows a schematic diagram of a control device of engine speed according to an embodiment of the application;
Fig. 3 shows a control flow chart of the engine speed according to an embodiment of the application.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures 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 in order to describe the embodiments of the application 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 but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Furthermore, in the description and in the claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
As described in the background art, in order to solve the problem that the engine is severely stalled or even stalled due to the large pressure fluctuation in the prior art, in an exemplary embodiment of the present application, a method for controlling the engine speed, a device thereof, a computer readable storage medium, a processor, and an electronic device are provided.
According to an embodiment of the present application, there is provided a control method of an engine speed.
Fig. 1 is a flowchart of a control method of an engine speed according to an embodiment of the present application. As shown in fig. 1, the method comprises the steps of:
step S101, receiving pressure information of a hydraulic pump in real time;
step S102, determining a target correction value at least according to the pressure information when the change rate of the pressure information is larger than a preset threshold value;
Step S103, correcting the rotation speed of the engine to the target rotation speed according to the target correction value.
In the control method of the engine speed, firstly, pressure information of a hydraulic pump is received in real time; then, if the rate of change of the pressure information is greater than a predetermined threshold value, determining a target correction value based at least on the pressure information; and finally, correcting the rotating speed of the engine to the target rotating speed according to the target correction value. Compared with the problem that the engine is seriously lost and even extinguished due to large pressure fluctuation in the prior art, the control method of the engine rotating speed of the application ensures that the engine rotating speed can reach the target rotating speed relatively quickly by receiving the pressure information of the hydraulic pump in real time, determining the target correction value at least according to the pressure information under the condition that the change rate of the pressure information is larger than the preset threshold value, and correcting the rotating speed of the engine to the target rotating speed according to the target correction value, so that the engine can directly correct the rotating speed according to the change of the pressure information, the problem that the engine is seriously lost and even extinguished due to large pressure fluctuation in the prior art is avoided, and the stability of the engine is ensured to be relatively good.
In the prior art, when the pressure information fluctuation is large due to the influence of materials of a hydraulic pump, the hydraulic pump changes the displacement according to the pressure change to ensure constant power, but due to the influence of a hardware structure, the response process is long, so that the regulation is delayed, a hydraulic system gives a large load to the engine instantly, and the engine is seriously lost and even is shut down, therefore, in the current control of the excavator, the engine is not directly regulated only by the displacement regulation based on the pressure of the hydraulic pump, the load from the hydraulic pump is completely and passively received by the engine, and PI (Proportional integral ) control is adopted on the basis, so that the load resistance of the engine is poor.
Specifically, the hydraulic system transmits the collected pressure information of the hydraulic pump to the engine ECU (Electronic Control Unit ), and when the engine recognizes that the rising slope of the pressure information of the hydraulic pump (i.e., the load slope) exceeds the predetermined threshold, the engine corrects the rotation speed of the engine so as to reduce the interference of the load on the engine.
According to a specific embodiment of the present application, correcting the rotational speed of the engine to the target rotational speed according to the target correction value includes: acquiring the rotating speed of the engine in real time to obtain a preset rotating speed; calculating the sum of the preset rotating speed and the target correction value to obtain a target rotating speed; the engine is controlled to rotate at the target rotation speed. The preset rotating speed of the engine is obtained in real time, the sum of the preset rotating speed and the target correction value is calculated to obtain the target rotating speed, and the engine is controlled to rotate at the target rotating speed, so that the engine can reach the target rotating speed quickly, and the stability of the engine is further guaranteed to be good.
In order to further ensure that the stability of the engine is better, according to another embodiment of the present application, determining the target correction value based at least on the pressure information includes: acquiring the rotating speed information of the engine, the torque information of the engine and the displacement information of the hydraulic pump in real time; the target correction value is determined based on the amount of change in the pressure information, the displacement information, the torque information, and the rotational speed information. The target correction value is determined according to the change amount of the pressure information, the displacement information, the torque information and the rotating speed information, the accuracy of the target correction value is high, the accuracy of the target rotating speed determined according to the target correction value is high, and the stability of the engine is further guaranteed.
Specifically, the hydraulic system accesses the pump pressure information and the displacement information to an ECU, and the ECU calculates a corrected rotational speed based on the rotational speed information, the rate of change of the pressure information, and the displacement information of the engine, and finally adjusts the set rotational speed upward.
In order to further ensure that the stability of the engine is better, according to still another embodiment of the present application, determining the target correction value based on the amount of change in the pressure information, the displacement information, the torque information, and the rotational speed information includes: determining a predetermined correction coefficient based on the amount of change in the pressure information, the displacement information, the torque information, and the rotational speed information; performing predetermined processing on the predetermined correction coefficient to obtain a target correction coefficient, wherein the predetermined processing comprises at least one of delay processing and filtering processing; and determining the target correction value according to the target revision coefficient and a first corresponding relation, wherein the first corresponding relation is used for representing the relation between the revision coefficient and the correction value. The preset correction coefficient is determined through the variable quantity of the pressure information, the displacement information, the torque information and the rotating speed information, the preset processing such as the delay processing and the filtering processing is carried out on the preset correction coefficient, the fact that the target correction coefficient after the preset processing is more in line with the actual situation is guaranteed, the target correction value is determined according to the target correction coefficient and the first corresponding relation, and the accuracy of the target correction value is further guaranteed to be higher.
Specifically, by performing the delay processing on the predetermined correction coefficient, the time when the target rotation speed of the engine adjusted according to the target correction value more accords with the falling speed of the engine is ensured, and the problem that the falling speed of the engine is serious and even the engine is flameout is timely avoided.
In a specific embodiment, the first correspondence is determined according to actual situations, or may be adjusted according to different situations.
According to a specific embodiment of the present application, determining a predetermined correction coefficient based on the amount of change in the pressure information, the displacement information, the torque information, and the rotational speed information includes: determining a first correction coefficient according to the variation of the pressure information, the displacement information and a second corresponding relation, wherein the second corresponding relation is used for representing the relation of the variation of the pressure information, the displacement information and the correction coefficient; determining a second correction coefficient according to the variation of the pressure information, the torque information and a third corresponding relation, wherein the third corresponding relation is used for representing the relation of the variation of the pressure information, the torque information and the correction coefficient; determining a third correction coefficient according to the variation of the pressure information, the rotation speed information and a fourth corresponding relation, wherein the fourth corresponding relation is used for representing the relation of the variation of the pressure information, the rotation speed information and the correction coefficient; and calculating the product of the first correction coefficient, the second correction coefficient and the third correction coefficient to obtain the preset correction coefficient. The first correction coefficient is determined according to the change amount of the pressure information, the displacement information and the second corresponding relation, the second correction coefficient is determined according to the change amount of the pressure information, the torque information and the third corresponding relation, the third correction coefficient is determined according to the change amount of the pressure information, the rotating speed information and the fourth corresponding relation, and finally the product of the first correction coefficient, the second correction coefficient and the third correction coefficient is calculated to obtain the preset correction coefficient, so that the preset correction coefficient can be determined according to different corresponding relations of the change amount of the pressure information, the displacement information, the torque information and the rotating speed information, and the accuracy of the target correction value determined according to the preset correction coefficient is further ensured to be higher.
In a specific embodiment, the second correspondence relationship, the third correspondence relationship, and the fourth correspondence relationship are determined according to actual conditions, and may be adjusted according to actual conditions of the displacement information, the torque information, and the rotational speed information.
According to another embodiment of the present application, the target correction value is positive. The target correction value is positive, so that the target rotation speed determined by the preset rotation speed and the target correction value is ensured to be larger than the preset rotation speed, the rotation speed of the engine can be increased to the target rotation speed, the problem that the engine is seriously lost and even extinguished due to large pressure fluctuation in the prior art is avoided, and the stability of the engine is further ensured to be better.
Specifically, the control process of the engine speed corrects the engine speed based on the pressure information of the hydraulic pump, that is, identifies load fluctuation based on the pressure change of the hydraulic pump, and then completes the set speed correction, which is equivalent to early intervention before the engine speed is seriously lost, so that the speed loss can be reduced.
The embodiment of the application also provides a storage device of the driving route, and the storage device of the driving route can be used for executing the storage method for the driving route provided by the embodiment of the application. The following describes a storage device for a travel route provided by an embodiment of the present application.
Fig. 2 is a schematic diagram of a control device of engine speed according to an embodiment of the present application. As shown in fig. 2, the device comprises a receiving unit 10, a determining unit 20 and a correcting unit 30, wherein the receiving unit 10 is used for receiving pressure information of the hydraulic pump in real time; the determining unit 20 is configured to determine a target correction value based on at least the pressure information when the rate of change of the pressure information is greater than a predetermined threshold; the correction unit 30 is configured to correct the rotational speed of the engine to a target rotational speed according to the target correction value.
In the engine speed control device, the receiving unit receives the pressure information of the hydraulic pump in real time; determining, by the determining unit, a target correction value based at least on the pressure information when the rate of change of the pressure information is greater than a predetermined threshold; and correcting the rotation speed of the engine to a target rotation speed according to the target correction value by the correction unit. Compared with the problem that the engine is seriously lost and even extinguished due to large pressure fluctuation in the prior art, the control device for the engine rotating speed of the application ensures that the engine rotating speed can reach the target rotating speed relatively quickly by receiving the pressure information of the hydraulic pump in real time, determining the target correction value at least according to the pressure information under the condition that the change rate of the pressure information is larger than the preset threshold value, and correcting the rotating speed of the engine to the target rotating speed according to the target correction value, so that the engine can directly correct the rotating speed according to the change of the pressure information, the problem that the engine is seriously lost and even extinguished due to large pressure fluctuation in the prior art is avoided, and the stability of the engine is relatively good.
In the prior art, when the pressure information fluctuation is large due to the influence of materials of a hydraulic pump, the hydraulic pump changes the displacement according to the pressure change to ensure constant power, but due to the influence of a hardware structure, the response process is long, so that the regulation is delayed, a hydraulic system gives a large load to the engine instantly, and the engine is seriously lost and even is shut down, therefore, in the current control of the excavator, the engine is not directly regulated only by the displacement regulation based on the pressure of the hydraulic pump, the load from the hydraulic pump is completely and passively received by the engine, and PI (Proportional integral ) control is adopted on the basis, so that the load resistance of the engine is poor.
Specifically, the hydraulic system transmits the collected pressure information of the hydraulic pump to the engine ECU (Electronic Control Unit ), and when the engine recognizes that the rising slope of the pressure information of the hydraulic pump (i.e., the load slope) exceeds the predetermined threshold, the engine corrects the rotation speed of the engine so as to reduce the interference of the load on the engine.
According to a specific embodiment of the present application, the correction unit includes a first acquisition module, a calculation module, and a control module, where the first acquisition module is configured to acquire, in real time, a rotation speed of the engine to obtain a predetermined rotation speed; the calculation module is used for calculating the sum of the preset rotating speed and the target correction value to obtain a target rotating speed; the control module is used for controlling the engine to rotate at the target rotating speed. The preset rotating speed of the engine is obtained in real time, the sum of the preset rotating speed and the target correction value is calculated to obtain the target rotating speed, and the engine is controlled to rotate at the target rotating speed, so that the engine can reach the target rotating speed quickly, and the stability of the engine is further guaranteed to be good.
In order to further ensure that the stability of the engine is better, according to another specific embodiment of the present application, the determining unit includes a second acquiring module and a determining module, where the second acquiring module is configured to acquire, in real time, rotational speed information of the engine, torque information of the engine, and displacement information of the hydraulic pump; the determination module is configured to determine the target correction value based on the amount of change in the pressure information, the displacement information, the torque information, and the rotational speed information. The target correction value is determined according to the change amount of the pressure information, the displacement information, the torque information and the rotating speed information, the accuracy of the target correction value is high, the accuracy of the target rotating speed determined according to the target correction value is high, and the stability of the engine is further guaranteed.
Specifically, the hydraulic system accesses the pump pressure information and the displacement information to an ECU, and the ECU calculates a corrected rotational speed based on the rotational speed information, the rate of change of the pressure information, and the displacement information of the engine, and finally adjusts the set rotational speed upward.
In order to further ensure that the stability of the engine is better, according to a further specific embodiment of the present application, the determining module includes a first determining submodule, a processing submodule and a second determining submodule, where the first determining submodule is configured to determine a predetermined correction coefficient according to the change amount of the pressure information, the displacement information, the torque information and the rotation speed information; the processing submodule is used for carrying out preset processing on the preset correction coefficient to obtain a target correction coefficient, and the preset processing comprises at least one of delay processing and filtering processing; the second determining submodule is used for determining the target correction value according to the target revision coefficient and a first corresponding relation, and the first corresponding relation is used for representing the relation between the revision coefficient and the correction value. The preset correction coefficient is determined through the variable quantity of the pressure information, the displacement information, the torque information and the rotating speed information, the preset processing such as the delay processing and the filtering processing is carried out on the preset correction coefficient, the fact that the target correction coefficient after the preset processing is more in line with the actual situation is guaranteed, the target correction value is determined according to the target correction coefficient and the first corresponding relation, and the accuracy of the target correction value is further guaranteed to be higher.
Specifically, by performing the delay processing on the predetermined correction coefficient, the time when the target rotation speed of the engine adjusted according to the target correction value more accords with the falling speed of the engine is ensured, and the problem that the falling speed of the engine is serious and even the engine is flameout is timely avoided.
In a specific embodiment, the first correspondence is determined according to actual situations, or may be adjusted according to different situations.
According to a specific embodiment of the present application, the first determining submodule is further configured to determine a first correction coefficient according to the change amount of the pressure information, the displacement information, and a second correspondence, where the second correspondence is used to characterize a relationship among the change amount of the pressure information, the displacement information, and the correction coefficient; determining a second correction coefficient according to the variation of the pressure information, the torque information and a third corresponding relation, wherein the third corresponding relation is used for representing the relation of the variation of the pressure information, the torque information and the correction coefficient; determining a third correction coefficient according to the variation of the pressure information, the rotation speed information and a fourth corresponding relation, wherein the fourth corresponding relation is used for representing the relation of the variation of the pressure information, the rotation speed information and the correction coefficient; and calculating the product of the first correction coefficient, the second correction coefficient and the third correction coefficient to obtain the preset correction coefficient. The first correction coefficient is determined according to the change amount of the pressure information, the displacement information and the second corresponding relation, the second correction coefficient is determined according to the change amount of the pressure information, the torque information and the third corresponding relation, the third correction coefficient is determined according to the change amount of the pressure information, the rotating speed information and the fourth corresponding relation, and finally the product of the first correction coefficient, the second correction coefficient and the third correction coefficient is calculated to obtain the preset correction coefficient, so that the preset correction coefficient can be determined according to different corresponding relations of the change amount of the pressure information, the displacement information, the torque information and the rotating speed information, and the accuracy of the target correction value determined according to the preset correction coefficient is further ensured to be higher.
In a specific embodiment, the second correspondence relationship, the third correspondence relationship, and the fourth correspondence relationship are determined according to actual conditions, and may be adjusted according to actual conditions of the displacement information, the torque information, and the rotational speed information.
According to another embodiment of the present application, the target correction value is positive. The target correction value is positive, so that the target rotation speed determined by the preset rotation speed and the target correction value is ensured to be larger than the preset rotation speed, the rotation speed of the engine can be increased to the target rotation speed, the problem that the engine is seriously lost and even extinguished due to large pressure fluctuation in the prior art is avoided, and the stability of the engine is further ensured to be better.
Specifically, the control process of the engine speed corrects the engine speed based on the pressure information of the hydraulic pump, that is, identifies load fluctuation based on the pressure change of the hydraulic pump, and then completes the set speed correction, which is equivalent to early intervention before the engine speed is seriously lost, so that the speed loss can be reduced.
The engine speed control device includes a processor and a memory, wherein the receiving means, the determining means, the correcting means, and the like are stored in the memory as program means, and the processor executes the program means stored in the memory to realize the corresponding functions.
The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The inner core can be provided with one or more than one, and the problems of serious engine speed drop and even flameout caused by larger pressure fluctuation in the prior art are solved by adjusting the parameters of the inner core.
The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.
An embodiment of the present invention provides a computer-readable storage medium having stored thereon a program which, when executed by a processor, implements the above-described engine speed control method.
The embodiment of the invention provides a processor which is used for running a program, wherein the control method of the engine speed is executed when the program runs.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program stored in the memory and capable of running on the processor, wherein the processor realizes at least the following steps when executing the program:
step S101, receiving pressure information of a hydraulic pump in real time;
step S102, determining a target correction value at least according to the pressure information when the change rate of the pressure information is larger than a preset threshold value;
Step S103, correcting the rotation speed of the engine to the target rotation speed according to the target correction value.
The device herein may be a server, PC, PAD, cell phone, etc.
The application also provides a computer program product adapted to perform, when executed on a data processing device, a program initialized with at least the following method steps:
step S101, receiving pressure information of a hydraulic pump in real time;
step S102, determining a target correction value at least according to the pressure information when the change rate of the pressure information is larger than a preset threshold value;
Step S103, correcting the rotation speed of the engine to the target rotation speed according to the target correction value.
According to another exemplary embodiment of the present application, there is also provided an electronic device including one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including means for performing any of the methods described above.
Fig. 3 is a control flow chart of the engine speed, which will be described in detail with reference to fig. 3,
Acquiring the rotation speed information of the engine, the torque information of the engine, and the displacement information of the hydraulic pump in real time when the rate of change of the pressure information is greater than the predetermined threshold value;
Determining the first correction coefficient according to the change amount of the pressure information, the displacement information and the second correspondence, determining the second correction coefficient according to the change amount of the pressure information, the torque information and the third correspondence, determining the third correction coefficient according to the change amount of the pressure information, the rotating speed information and the fourth correspondence, and calculating the product of the first correction coefficient, the second correction coefficient and the third correction coefficient to obtain the preset correction coefficient;
Carrying out the preset processing on the preset correction coefficient to obtain the target correction coefficient;
determining the target correction value according to the target revision coefficient and the first corresponding relation;
And acquiring the rotating speed of the engine in real time to obtain the preset rotating speed, calculating the sum of the preset rotating speed and the target correction value to obtain the target rotating speed, and controlling the engine to rotate at the target rotating speed.
In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units may be a logic function division, and there may be another division manner when actually implemented, for example, a plurality of units or components may be combined or may be 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 through some interfaces, units or modules, or may be in electrical or other forms.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of 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 invention 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 described above, 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 invention may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, comprising several 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 above-mentioned method of the various embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a read-only memory (ROM), a random access memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:
1) In the control method of the engine rotating speed, firstly, pressure information of a hydraulic pump is received in real time; then, if the rate of change of the pressure information is greater than a predetermined threshold value, determining a target correction value based at least on the pressure information; and finally, correcting the rotating speed of the engine to the target rotating speed according to the target correction value. Compared with the problem that the engine is seriously lost and even extinguished due to large pressure fluctuation in the prior art, the control method of the engine rotating speed of the application ensures that the engine rotating speed can reach the target rotating speed relatively quickly by receiving the pressure information of the hydraulic pump in real time, determining the target correction value at least according to the pressure information under the condition that the change rate of the pressure information is larger than the preset threshold value, and correcting the rotating speed of the engine to the target rotating speed according to the target correction value, so that the engine can directly correct the rotating speed according to the change of the pressure information, the problem that the engine is seriously lost and even extinguished due to large pressure fluctuation in the prior art is avoided, and the stability of the engine is ensured to be relatively good.
2) In the engine speed control device of the application, the receiving unit receives the pressure information of the hydraulic pump in real time; determining, by the determining unit, a target correction value based at least on the pressure information when the rate of change of the pressure information is greater than a predetermined threshold; and correcting the rotation speed of the engine to a target rotation speed according to the target correction value by the correction unit. Compared with the problem that the engine is seriously lost and even extinguished due to large pressure fluctuation in the prior art, the control device for the engine rotating speed of the application ensures that the engine rotating speed can reach the target rotating speed relatively quickly by receiving the pressure information of the hydraulic pump in real time, determining the target correction value at least according to the pressure information under the condition that the change rate of the pressure information is larger than the preset threshold value, and correcting the rotating speed of the engine to the target rotating speed according to the target correction value, so that the engine can directly correct the rotating speed according to the change of the pressure information, the problem that the engine is seriously lost and even extinguished due to large pressure fluctuation in the prior art is avoided, and the stability of the engine is relatively good.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (7)
1. A method of controlling an engine speed, the method comprising:
receiving pressure information of a hydraulic pump in real time;
determining a target correction value based on at least the pressure information if the rate of change of the pressure information is greater than a predetermined threshold;
correcting the rotational speed of the engine to a target rotational speed based on the target correction value,
Correcting the rotational speed of the engine to a target rotational speed according to the target correction value, including:
acquiring the rotating speed of the engine in real time to obtain a preset rotating speed;
calculating the sum of the preset rotating speed and the target correction value to obtain a target rotating speed;
Controlling the engine to rotate at the target rotation speed,
Determining a target correction value based at least on the pressure information, comprising:
acquiring the rotating speed information of the engine, the torque information of the engine and the displacement information of the hydraulic pump in real time;
determining the target correction value based on the amount of change in the pressure information, the displacement information, the torque information, and the rotational speed information,
Determining the target correction value according to the variation of the pressure information, the displacement information, the torque information and the rotation speed information, including:
determining a predetermined correction coefficient according to the variation of the pressure information, the displacement information, the torque information and the rotation speed information;
Performing predetermined processing on the predetermined correction coefficient to obtain a target correction coefficient, wherein the predetermined processing comprises at least one of delay processing and filtering processing;
And determining the target correction value according to the target revision coefficient and a first corresponding relation, wherein the first corresponding relation is used for representing the relation between the revision coefficient and the correction value.
2. The method of claim 1, wherein determining a predetermined correction factor based on the amount of change in the pressure information, the displacement information, the torque information, and the rotational speed information comprises:
determining a first correction coefficient according to the variation of the pressure information, the displacement information and a second corresponding relation, wherein the second corresponding relation is used for representing the relation of the variation of the pressure information, the displacement information and the correction coefficient;
Determining a second correction coefficient according to the variation of the pressure information, the torque information and a third corresponding relation, wherein the third corresponding relation is used for representing the relation of the variation of the pressure information, the torque information and the correction coefficient;
determining a third correction coefficient according to the variation of the pressure information, the rotation speed information and a fourth corresponding relation, wherein the fourth corresponding relation is used for representing the relation of the variation of the pressure information, the rotation speed information and the correction coefficient;
And calculating the product of the first correction coefficient, the second correction coefficient and the third correction coefficient to obtain the preset correction coefficient.
3. A method according to any one of claims 1 to 2, wherein the target correction value is a positive number.
4. A control apparatus for engine speed, characterized by comprising:
the receiving unit is used for receiving the pressure information of the hydraulic pump in real time;
A determining unit configured to determine a target correction value based at least on the pressure information, in a case where a rate of change of the pressure information is greater than a predetermined threshold;
a correction unit configured to correct a rotation speed of the engine to a target rotation speed based on the target correction value,
The correction unit comprises a first acquisition module, a calculation module and a control module, wherein the first acquisition module is used for acquiring the rotating speed of the engine in real time to obtain a preset rotating speed; the calculation module is used for calculating the sum of the preset rotating speed and the target correction value to obtain a target rotating speed; the control module is used for controlling the engine to rotate at the target rotating speed,
The determining unit comprises a second obtaining module and a determining module, wherein the second obtaining module is used for obtaining the rotating speed information of the engine, the torque information of the engine and the displacement information of the hydraulic pump in real time; the determining module is used for determining the target correction value according to the variation of the pressure information, the displacement information, the torque information and the rotating speed information,
The determining module comprises a first determining submodule, a processing submodule and a second determining submodule, wherein the first determining submodule is used for determining a preset correction coefficient according to the variable quantity of the pressure information, the displacement information, the torque information and the rotating speed information; the processing sub-module is used for carrying out preset processing on the preset correction coefficient to obtain a target correction coefficient, and the preset processing comprises at least one of delay processing and filtering processing; the second determining submodule is used for determining the target correction value according to the target revision coefficient and a first corresponding relation, and the first corresponding relation is used for representing the relation between the revision coefficient and the correction value.
5. A computer readable storage medium, characterized in that the computer readable storage medium comprises a stored program, wherein the program performs the method of any one of claims 1 to 3.
6. A processor for running a program, wherein the program when run performs the method of any one of claims 1 to 3.
7. An electronic device, comprising: one or more processors, memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing the method of any of claims 1-3.
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