Power distribution method, system, work machine, electronic device, and computer medium

Abstract

The application relates to the technical field of working machines, and provides a power distribution method, a system, a working machine, electronic equipment and a computer medium, wherein the method comprises the following steps: acquiring a first actual power, a first allowable power and a second actual power; if the first actual power is less than or equal to the first allowable power, a given current corresponding to each second actual power is directly used as a main pump current; if the first actual power is greater than the first allowable power, each second actual power is corrected based on the first actual power and the first allowable power, and a main pump current is determined based on a pressure value of each main pump and the corrected second actual power; and the main pump current is output to the corresponding main pump. The application is used to solve the defect that power cannot match the load caused by the active distribution mode in the prior art, realize automatic adjustment of the power based on the load change, avoid over-power work of the hydraulic system, and make the power match the load.

Description

Technical Field

[0001] This invention relates to the field of work machinery technology, and in particular to a power distribution method, system, work machinery, electronic equipment, and computer medium. Background Technology

[0002] Power distribution in operating machinery involves allocating engine power at different speeds to systems such as air conditioning, cooling, and hydraulics after obtaining the engine speed-power curve, in order to support the machine's operation. Therefore, how power is allocated determines the available power of the hydraulic system, thus affecting the machine's fuel consumption and efficiency. Consequently, power distribution is crucial to the overall performance of operating machinery.

[0003] However, the power distribution of current operating machinery generally adopts an active distribution method. This method distributes the available power of the hydraulic system to each main pump of the hydraulic system in a fixed proportion, thus failing to properly match the load. Summary of the Invention

[0004] This invention provides a power distribution method, system, working machinery, electronic equipment, and computer medium to solve the defects in the prior art caused by the use of active distribution methods for power distribution, which result in power mismatch with the load. It realizes automatic power adjustment based on load changes, which not only avoids the hydraulic system from working at excessive power, but also makes the power match the load.

[0005] This invention provides a power distribution method applied to working machinery employing a multi-pump hydraulic system, wherein the multi-pump hydraulic system includes at least two main pumps, and the method includes:

[0006] The first actual power, the first allowable power, and the second actual power are obtained, wherein the first actual power and the first allowable power are the actual power and the allowable power of the hydraulic system, respectively, and the second actual power is the actual power of the main pump;

[0007] If the first actual power is less than or equal to the first allowable power, then the given current corresponding to each of the second actual powers is directly used as the main pump current.

[0008] If the first actual power is greater than the first allowable power, then based on the first actual power and the first allowable power, each of the second actual powers is corrected, and the main pump current is determined based on the pressure value of each of the main pumps and the corrected second actual power.

[0009] The main pump current is output to the corresponding main pump.

[0010] According to the power allocation method of the present invention, obtaining the first actual power, the first allowable power, and the second actual power includes:

[0011] Obtain the pressure and displacement of the main pump;

[0012] The second actual power is determined based on the pressure and the displacement;

[0013] The first actual power is obtained by summing the second actual power values.

[0014] According to the power allocation method of the present invention, obtaining the first actual power, the first allowable power, and the second actual power includes:

[0015] The third actual power and the set speed of the engine of the working machine are obtained. The third actual power is the actual power of the other systems of the working machine other than the hydraulic system.

[0016] Based on the preset relationship between engine speed and power and the set speed, a second allowable power is determined. The second allowable power is the allowable power of the engine. The preset relationship is the relationship between engine speed and power after being corrected by a preset adjustment coefficient that affects the working efficiency of the working machinery.

[0017] The first allowable power is obtained by subtracting the second allowable power from the third actual power.

[0018] According to the power allocation method of the present invention, the step of correcting each of the second actual powers based on the first actual power and the first allowable power includes:

[0019] The ratio of the first allowable power to the first actual power is used as the first correction coefficient;

[0020] The second actual power is corrected based on the first correction factor.

[0021] According to the power allocation method of the present invention, the step of correcting each of the second actual powers based on the first actual power and the first allowable power further includes:

[0022] A second correction coefficient is determined based on a preset rule. The second correction coefficient is a real number greater than or equal to 1. The preset rule is determined based on the actual operating conditions of the machine.

[0023] Based on the second correction factor, the second actual power, which has been corrected by the first correction factor, is corrected again.

[0024] According to the power distribution method of the present invention, before outputting the main pump current to the corresponding main pump, the method further includes:

[0025] The main pump current is processed based on the ramp function.

[0026] The present invention also provides a power distribution system for use in machinery employing a multi-pump hydraulic system, the multi-pump hydraulic system comprising at least two main pumps, the system comprising:

[0027] The acquisition module is used to acquire a first actual power, a first allowable power, and a second actual power, wherein the first actual power and the first allowable power are the actual power and allowable power of the hydraulic system, respectively, and the second actual power is the actual power of the main pump;

[0028] The analysis module is used to directly use the given current corresponding to each of the second actual powers as the main pump current when the first actual power is less than or equal to the first allowable power; and to correct each of the second actual powers based on the first actual power and the first allowable power when the first actual power is greater than the first allowable power, and to determine the main pump current based on the pressure value of each of the main pumps and the corrected second actual power.

[0029] An execution module is used to output the main pump current to the corresponding main pump.

[0030] The present invention also provides a working machine including a multi-pump hydraulic system and a power distribution system as described above.

[0031] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the power distribution method as described above.

[0032] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the power allocation method as described above.

[0033] This invention provides a power distribution method, system, operating machinery, electronic equipment, and computer medium. It acquires a first actual power, a first allowable power, and a second actual power (i.e., the actual power and allowable power of the hydraulic system, and the actual power of the main pump). When the first actual power is less than or equal to the first allowable power, the given current corresponding to each of the second actual powers is directly used as the main pump current. When the first actual power is greater than the first allowable power, a corrected power for each main pump is determined based on the first actual power, the second actual power, and the first allowable power. The main pump current is then determined based on the pressure value of each main pump and the corrected power. Finally, the main pump current is output to the corresponding main pump. In other words, when the allowable power can meet the actual power requirements of the hydraulic system, the current given current to the main pump is directly used as the main pump current output to meet the load power requirements. When the allowable power cannot meet the actual power requirements of the hydraulic system, the actual power of each main pump is corrected based on the allowable power and actual power of the hydraulic system to reduce the power of each main pump accordingly. This ensures that the power matches the load while preventing the hydraulic system from operating at overpower. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is one of the flowcharts illustrating the power allocation method provided in this embodiment of the invention;

[0036] Figure 2 This is a schematic diagram illustrating the principle of the power allocation method provided in the embodiments of the present invention;

[0037] Figure 3 This is a test principle diagram for verifying the effectiveness of the power distribution method provided in the embodiment of the present invention, using a 200-ton hydraulic excavator as the test object.

[0038] Figure 4 This is a schematic diagram of the power distribution system provided in an embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0041] The following is combined with Figures 1 to 3 The present invention describes a power distribution method applied to operating machinery employing a multi-pump hydraulic system, wherein the multi-pump hydraulic system includes at least two main pumps, for example, a super-large excavator employing a hydraulic system with four main pumps.

[0042] The power distribution method provided in this embodiment of the invention is executed by the controller of the working machinery. The controller can be the overall vehicle controller of the working machinery, or it can be a separately arranged controller for power distribution, such as... Figure 1 As shown, the method includes the following steps:

[0043] 101. Obtain a first actual power, a first allowable power, and a second actual power, wherein the first actual power and the first allowable power are the actual power and allowable power of the hydraulic system, respectively, and the second actual power is the actual power of the main pump;

[0044] Specifically, the actual power of the main pump refers to the power provided by the controller to the main pump according to the operator's intention. Taking an excavator as an example, the operator's intention mainly refers to the opening degree of the operator's control handle. The actual power of the hydraulic system is equal to the sum of the actual power of each main pump. The allowable power of the hydraulic system refers to the power of the engine that can be allocated to the hydraulic system.

[0045] More specifically, the actual power of each main pump can be calculated from the operating parameters of the main pump detected by sensors, for example, by acquiring pressure and flow rate. The allowable power of the hydraulic system can be obtained by subtracting the power allocated to the air conditioning system, cooling system, etc., from the engine power provided by the engine. The engine power can be determined based on the engine speed-power curve and the current engine speed.

[0046] 102. If the first actual power is less than or equal to the first allowable power, then the given current corresponding to each of the second actual powers shall be directly used as the main pump current.

[0047] It is understandable that when the actual power of the hydraulic system is less than or equal to the allowable power of the hydraulic system, it means that the power provided by the engine to the hydraulic system can meet the load requirements of the hydraulic system. By directly using the given current corresponding to each second actual power as the main pump current, that is, using the current of the current controller to each main pump as the main pump current, the power of each main pump can be matched with the load.

[0048] 103. If the first actual power is greater than the first allowable power, then based on the first actual power and the first allowable power, each of the second actual powers is corrected, and the main pump current is determined based on the pressure value of each of the main pumps and the corrected second actual power.

[0049] It is understandable that when the actual power of the hydraulic system is greater than the allowable power of the hydraulic system, it means that the power that the engine can allocate to the hydraulic system cannot meet the actual power requirements of the hydraulic system. By correcting the actual power of each main pump based on the actual power and allowable power of the hydraulic system, the actual power of each main pump is adjusted according to a unified standard, thereby ensuring that the power allocated to each main pump matches the load while avoiding the hydraulic system from working at overpower.

[0050] Specifically, based on the relationship between power, current and pressure in the hydraulic system, after correcting the actual power of each main pump, the main pump current can be determined using the corrected actual power and pressure values.

[0051] 104. Output the main pump current to the corresponding main pump.

[0052] The power allocation method provided in this invention obtains the actual power and allowable power of the hydraulic system, and then determines the allocation strategy of the allowable power of the hydraulic system based on the relationship between the actual power and the allowable power. Through a passive allocation method, the method meets the load changes of the hydraulic system while avoiding over-power operation, thereby improving the working efficiency of the machinery.

[0053] Based on the above embodiments, obtaining the first actual power, the first allowable power, and the second actual power includes:

[0054] Obtain the pressure and displacement of the main pump;

[0055] The second actual power is determined based on the pressure and the displacement;

[0056] The first actual power is obtained by summing the second actual power values.

[0057] Specifically, the pressure and displacement of each main pump can be determined by sensors. Then, based on the formula power = pressure * displacement, the actual power of each main pump can be determined, which is the second actual power. Finally, the actual power of all the main pumps is added together to obtain the actual power of the hydraulic system, which is the first actual power.

[0058] Based on the above embodiments, obtaining the first actual power, the first allowable power, and the second actual power includes:

[0059] The third actual power and the set speed of the engine of the working machine are obtained. The third actual power is the actual power of the other systems of the working machine other than the hydraulic system.

[0060] Based on the preset relationship between engine speed and power and the set speed, a second allowable power is determined. The second allowable power is the allowable power of the engine. The preset relationship is the relationship between engine speed and power after being corrected by a preset adjustment coefficient that affects the working efficiency of the working machinery.

[0061] The first allowable power is obtained by subtracting the second allowable power from the third actual power.

[0062] It is understandable that the power required for the operation of hydraulic systems, air conditioning systems, cooling systems, and other systems of machinery is provided by the engine, and the engine power provided by the engine is related to the engine speed.

[0063] Furthermore, when an engine leaves the factory, the manufacturer will provide a characteristic diagram of the engine, that is, the relationship between engine speed and power. Therefore, after determining the engine speed, the engine power provided by the engine can be determined by the relationship between engine speed and power.

[0064] It should be noted that when the working environment of the machinery is different, factors such as ambient temperature and altitude will affect the relationship between engine speed and power. Therefore, by setting the preset relationship between engine speed and power to a preset adjustment coefficient that is corrected based on the effects of high temperature, low temperature, altitude, etc. on the working efficiency of the machinery, the engine power determined based on engine speed, i.e., the second allowable power, can be more accurate.

[0065] Specifically, the third actual power is the actual power of other systems besides the hydraulic system of the operating machinery. These other systems refer to systems such as the cooling system and air conditioning system of the operating machinery that require the allocation of engine power. The power obtained is the real-time power of these systems, rather than the power consumption estimated according to a fixed value. This makes the first allowable power obtained based on the second allowable power and the third actual power more accurate, thereby improving power utilization and avoiding power waste.

[0066] Based on the above embodiments, the step of correcting each of the second actual powers based on the first actual power and the first allowable power includes:

[0067] The ratio of the first allowable power to the first actual power is used as the first correction coefficient;

[0068] The second actual power is corrected based on the first correction factor.

[0069] Specifically, by using the ratio of the first allowable power to the first actual power as the first correction coefficient, the first actual power P is adjusted accordingly. 实 Greater than the first allowable power P 许 At that time, it can be based on P n修 =P n实 ·P 许 / P 实 Where n = 1, 2, 3, ..., n, the actual power P of each main pump n is represented. n实 Make corrections to obtain P. n修 This reduces the actual power of each main pump by the same proportion, thus achieving matching with the load and avoiding over-power operation of the hydraulic system.

[0070] Based on the above embodiments, the step of correcting each of the second actual powers based on the first actual power and the first allowable power further includes:

[0071] A second correction coefficient is determined based on a preset rule. The second correction coefficient is a real number greater than or equal to 1. The preset rule is determined based on the actual operating conditions of the machine.

[0072] Based on the second correction factor, the second actual power, which has been corrected by the first correction factor, is corrected again.

[0073] It is understandable that when the first actual power is greater than the first allowable power, the actual power of each main pump can be reduced by reducing the flow rate of the hydraulic pump. However, the reduction in flow rate may cause an instantaneous drop in pressure, resulting in incomplete utilization of the first allowable power and jerking of the working machinery.

[0074] Specifically, by determining a second correction coefficient greater than or equal to 1 based on preset rules, the second actual power corrected by the first correction coefficient can be corrected again to increase the corrected power, thereby avoiding the instantaneous pressure drop caused by the decrease in flow rate, thus realizing the full utilization of the first allowable power, improving the smoothness of the working machinery's operation during power adjustment, and enhancing the user experience.

[0075] More specifically, factors such as working environment and configuration can lead to differences in fuel consumption and efficiency among different operating machines. By setting multiple preset rules, different operating machines can select the most suitable preset rule to determine the second correction coefficient, thereby improving the efficiency of the operating machines and reducing fuel consumption. Preset rules can include: fixed values ​​based on experience, calculations based on the main pump pressure function, or rules based on P... 许 / P 实 The calculation of the value of the function, etc., in which the value of the second correction coefficient is generally between 1 and 1.5. Specifically, during the commissioning process of the machine for delivery to the user, the second correction coefficient can be determined based on different preset rules. Then, the effect of the power corrected based on these second correction coefficients on the machine is fed back to determine the preset rules applied to the machine. So that after the machine is put into operation, the second correction coefficient determined by the preset rules can be used to correct the actual power of the main pump.

[0076] It should be noted that the feedback can include multiple aspects such as operational smoothness, coordination, fuel consumption, engine torque percentage, and heat generation. The specific aspects can be flexibly selected according to the usage requirements of the operating machinery.

[0077] Based on the above embodiments, before outputting the main pump current to the corresponding main pump, the method further includes:

[0078] The main pump current is processed based on the ramp function.

[0079] Specifically, by processing the main pump current based on a ramp function before outputting it to the corresponding main pump, the main pump current can be gradually output to the main pump from small to large, thereby reducing pressure fluctuations caused by power adjustment and improving the user experience.

[0080] In summary, the principle of the power allocation method provided in the above embodiments of the present invention is as follows: Figure 2 As shown, in order to verify the effect of power distribution using the power distribution method provided in this embodiment of the invention, a 200-ton hydraulic excavator was used as the test object for effect verification. The test principle diagram is shown below. Figure 3As shown, six pressure sensors and one speed sensor are used to collect the oil supply pressure and motor speed of each main pump, and the control current of each main pump's displacement valve is also collected. Experiments revealed that when the actual power of the hydraulic system exceeds its allowable power, the correction of the actual power of each main pump using the first and second correction coefficients ensures that the sum of the corrected actual power of each main pump, i.e., the adjusted actual power of the hydraulic system, is approximately equal to the allowable power. The ratio of the corrected actual power of each main pump to its uncorrected actual power is also roughly equivalent. Furthermore, the fluctuation of the oil supply pressure of each main pump during power adjustment remains within an acceptable range, without any jerking or hesitation, and the operation is smooth.

[0081] As can be seen, the hydraulic power distribution method provided in the above embodiments of the present invention distributes the engine power of the operating machinery. By changing the active distribution method to a passive distribution method, it meets the load changes of the hydraulic system. By determining the allowable power of the hydraulic system based on the actual power of other systems of the operating machinery, that is, by estimating or detecting the actual power of the air conditioning system, cooling system, etc. in real time, the determined allowable power of the hydraulic system is more accurate, which not only avoids power waste, but also helps to ensure that the power is fully utilized. By adding a second correction coefficient, the pressure drop caused by the reduction of the main pump current is reduced, which leads to power reduction and insufficient power utilization, thereby improving the power utilization rate, improving the efficiency of the operating machinery, and reducing fuel consumption. Furthermore, by adding a ramp function to process the main pump current, the pressure fluctuation of the main pump caused by power distribution is reduced, improving the user experience.

[0082] The following is combined with Figure 4 The present invention provides a power distribution system, and the power distribution system described below can be referred to in correspondence with the power distribution method described above.

[0083] The power distribution system described in this embodiment of the invention is applied to working machinery employing a multi-pump hydraulic system, wherein the multi-pump hydraulic system includes at least two main pumps, such as... Figure 4 As shown, the system includes: an acquisition module 410, an analysis module 420, and an execution module 430; wherein,

[0084] The acquisition module 410 is used to acquire a first actual power, a first allowable power, and a second actual power, wherein the first actual power and the first allowable power are the actual power and allowable power of the hydraulic system, respectively, and the second actual power is the actual power of the main pump;

[0085] The analysis module 420 is used to directly use the given current corresponding to each of the second actual powers as the main pump current when the first actual power is less than or equal to the first allowable power; and when the first actual power is greater than the first allowable power, to correct each of the second actual powers based on the first actual power and the first allowable power, and to determine the main pump current based on the pressure value of each of the main pumps and the corrected second actual power.

[0086] The execution module 430 is used to output the main pump current to the corresponding main pump.

[0087] The power distribution system provided in this invention obtains a first actual power, a first allowable power, and a second actual power (i.e., the actual power and allowable power of the hydraulic system, and the actual power of the main pump). When the first actual power is less than or equal to the first allowable power, the given current corresponding to each second actual power is directly used as the main pump current. When the first actual power is greater than the first allowable power, the corrected power of each main pump is determined based on the first actual power, the second actual power, and the first allowable power. The main pump current is then determined based on the pressure value of each main pump and the corrected power. Finally, the main pump current is output to the corresponding main pump. In other words, when the allowable power can meet the actual power requirements of the hydraulic system, the current given current to the main pump is directly used as the main pump current output to meet the power required by the load. When the allowable power cannot meet the actual power requirements of the hydraulic system, the actual power of each main pump is corrected based on the allowable power and actual power of the hydraulic system to reduce the power of each main pump accordingly. This avoids the hydraulic system from operating at overpower while ensuring power matching with the load.

[0088] Optionally, the acquisition module 410 is specifically used for:

[0089] Obtain the pressure and displacement of the main pump;

[0090] The second actual power is determined based on the pressure and the displacement;

[0091] The first actual power is obtained by summing the second actual power values.

[0092] Optionally, the acquisition module 410 is also specifically used for:

[0093] The third actual power and the set speed of the engine of the working machine are obtained. The third actual power is the actual power of the other systems of the working machine other than the hydraulic system.

[0094] Based on the preset relationship between engine speed and power and the set speed, a second allowable power is determined. The second allowable power is the allowable power of the engine. The preset relationship is the relationship between engine speed and power after being corrected by a preset adjustment coefficient that affects the working efficiency of the working machinery.

[0095] The first allowable power is obtained by subtracting the second allowable power from the third actual power.

[0096] Optionally, the analysis module 420 is specifically used for:

[0097] The ratio of the first allowable power to the first actual power is used as the first correction coefficient;

[0098] The second actual power is corrected based on the first correction factor.

[0099] Optionally, the analysis module 420 is also specifically used for:

[0100] A second correction coefficient is determined based on a preset rule. The second correction coefficient is a real number greater than or equal to 1. The preset rule is determined based on the actual operating conditions of the machine.

[0101] Based on the second correction factor, the second actual power, which has been corrected by the first correction factor, is corrected again.

[0102] Optionally, before outputting the main pump current to the corresponding main pump, the execution module 430 is further configured to:

[0103] The main pump current is processed based on the ramp function.

[0104] This invention also provides a working machine including a multi-pump hydraulic system and a power distribution system as described in any of the above embodiments.

[0105] It is understood that the working machinery including the power distribution system described in any of the above embodiments has all the advantages and technical effects of the power distribution system described in any of the above embodiments, and will not be repeated here.

[0106] Specifically, the aforementioned operating machinery can be any operating machinery that adopts a multi-pump hydraulic system, such as excavators, cranes, etc., without any specific limitations.

[0107] Figure 5 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 5As shown, the electronic device may include: a processor 510, a communication interface 520, a memory 530, and a communication bus 540, wherein the processor 510, the communication interface 520, and the memory 530 communicate with each other through the communication bus 540. The processor 510 can call logic instructions in the memory 530 to execute a power allocation method applied to a working machine employing a multi-pump hydraulic system, the multi-pump hydraulic system including at least two main pumps. The method includes: acquiring a first actual power, a first allowable power, and a second actual power, wherein the first actual power and the first allowable power are respectively the actual power and allowable power of the hydraulic system, and the second actual power is the actual power of the main pump; if the first actual power is less than or equal to the first allowable power, then directly using a given current corresponding to each of the second actual powers as the main pump current; if the first actual power is greater than the first allowable power, then correcting each of the second actual powers based on the first actual power and the first allowable power, and determining the main pump current based on the pressure value of each of the main pumps and the corrected second actual power; and outputting the main pump current to the corresponding main pump.

[0108] Furthermore, the logical instructions in the aforementioned memory 530 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0109] On the other hand, the present invention also provides a computer program product, the computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions, which, when executed by a computer, enable the computer to execute the power distribution method provided by the above methods, applied to working machinery employing a multi-pump hydraulic system, the multi-pump hydraulic system comprising at least two main pumps, the method comprising: acquiring a first actual power, a first allowable power, and a second actual power, wherein the first actual power and the first allowable power are respectively the actual power and allowable power of the hydraulic system, and the second actual power is the actual power of the main pump; if the first actual power is less than or equal to the first allowable power, then directly using a given current corresponding to each of the second actual powers as the main pump current; if the first actual power is greater than the first allowable power, then correcting each of the second actual powers based on the first actual power and the first allowable power, and determining the main pump current based on the pressure value of each of the main pumps and the corrected second actual power; and outputting the main pump current to the corresponding main pump.

[0110] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon. When executed by a processor, the computer program implements a power allocation method applied to a working machine employing a multi-pump hydraulic system, the multi-pump hydraulic system comprising at least two main pumps. The method comprises: acquiring a first actual power, a first allowable power, and a second actual power, wherein the first actual power and the first allowable power are respectively the actual power and allowable power of the hydraulic system, and the second actual power is the actual power of the main pump; if the first actual power is less than or equal to the first allowable power, then directly using a given current corresponding to each of the second actual powers as the main pump current; if the first actual power is greater than the first allowable power, then correcting each of the second actual powers based on the first actual power and the first allowable power, and determining the main pump current based on the pressure value of each of the main pumps and the corrected second actual power; and outputting the main pump current to the corresponding main pump.

[0111] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0112] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power distribution method applied to working machinery employing a multi-pump hydraulic system, the multi-pump hydraulic system comprising at least two main pumps, characterized in that, The method includes: The first actual power, the first allowable power, and the second actual power are obtained, wherein the first actual power and the first allowable power are the actual power and the allowable power of the hydraulic system, respectively, and the second actual power is the actual power of the main pump; If the first actual power is less than or equal to the first allowable power, then the given current corresponding to each of the second actual powers is directly used as the main pump current. If the first actual power is greater than the first allowable power, then based on the first actual power and the first allowable power, each of the second actual powers is corrected, including: The ratio of the first allowable power to the first actual power is used as the first correction coefficient; Based on the first correction coefficient, correcting the second actual power further includes: A second correction coefficient is determined based on a preset rule. The second correction coefficient is a real number greater than or equal to 1. The preset rule is determined based on the actual operating conditions of the machine. Based on the second correction factor, the second actual power, which has been corrected by the first correction factor, is corrected again; The main pump current is determined based on the pressure value of each main pump and the corrected second actual power. The main pump current is output to the corresponding main pump.

2. The power distribution method according to claim 1, characterized in that, The acquisition of the first actual power, the first allowable power, and the second actual power includes: Obtain the pressure and displacement of the main pump; The second actual power is determined based on the pressure and the displacement; The first actual power is obtained by summing the second actual power values.

3. The power distribution method according to claim 1, characterized in that, The acquisition of the first actual power, the first allowable power, and the second actual power includes: The third actual power and the set speed of the engine of the working machine are obtained. The third actual power is the actual power of the other systems of the working machine other than the hydraulic system. Based on the preset relationship between engine speed and power and the set speed, a second allowable power is determined. The second allowable power is the allowable power of the engine. The preset relationship is the relationship between engine speed and power after being corrected by a preset adjustment coefficient that affects the working efficiency of the working machinery. The first allowable power is obtained by subtracting the second allowable power from the third actual power.

4. The power distribution method according to claim 1, characterized in that, Before outputting the main pump current to the corresponding main pump, the method further includes: The main pump current is processed based on the ramp function.

5. A power distribution system applied to machinery employing a multi-pump hydraulic system, the multi-pump hydraulic system comprising at least two main pumps, characterized in that, The system includes: The acquisition module is used to acquire a first actual power, a first allowable power, and a second actual power, wherein the first actual power and the first allowable power are the actual power and allowable power of the hydraulic system, respectively, and the second actual power is the actual power of the main pump; The analysis module is configured to: directly use the given current corresponding to each of the second actual powers as the main pump current when the first actual power is less than or equal to the first allowable power; and to correct each of the second actual powers based on the first actual power and the first allowable power when the first actual power is greater than the first allowable power, including: The ratio of the first allowable power to the first actual power is used as the first correction coefficient; Based on the first correction coefficient, correcting the second actual power further includes: A second correction coefficient is determined based on a preset rule. The second correction coefficient is a real number greater than or equal to 1. The preset rule is determined based on the actual operating conditions of the machine. Based on the second correction factor, the second actual power, which has been corrected by the first correction factor, is corrected again; The main pump current is determined based on the pressure value of each main pump and the corrected second actual power. An execution module is used to output the main pump current to the corresponding main pump.

6. A type of work machinery, comprising a multi-pump hydraulic system, characterized in that, It also includes the power distribution system as described in claim 5.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the power allocation method as described in any one of claims 1 to 4.

8. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the power allocation method as described in any one of claims 1 to 4.

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