Method for controlling power matching, controller, engineering machinery and storage medium

Abstract

The invention discloses a method for controlling power matching, a controller, engineering machinery and a storage medium. The method comprises the steps that the maximum torque percentage and the minimum torque percentage corresponding to a current accelerator gear are determined; the actual torque percentage of the engine is obtained; and adjusting the adjusting current output to a hydraulic pump electromagnetic valve according to the comparison result of the actual torque percentage, the maximum torque percentage and the minimum torque percentage, so that the power of the engine is matched with that of the hydraulic pump. The adjusting current output to the electromagnetic valve of the hydraulic pump is adjusted according to the comparison result of the actual torque percentage, the maximum torque percentage and the minimum torque percentage, so that the engine is controlled to be matched with the power of the hydraulic pump, and the rapid adaptation requirements of engineering machinery of different tonnages can be met.

Description

Technical Field

[0001] The present application relates to the technical field of power matching, and in particular to a method, a controller, an engineering machine and a storage medium for controlling power matching. Background Art

[0002] Construction machinery is widely used in infrastructure, material mining, transportation and other industries. In different work scenarios, construction machinery of different tonnages can better play their roles. Therefore, on the basis of meeting the standards, manufacturers will produce different models of construction machinery to meet the needs of different users. In order to improve the working efficiency of construction machinery and reduce energy loss, when the construction machinery is operating, the output power of the engine must be consistent with the absorbed power of the hydraulic system. However, most of the control methods are relatively simple, and it is impossible to meet the needs of rapid adaptation of construction machinery of different tonnages by adjusting relevant parameters. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a method, a controller, an engineering machine and a storage medium for controlling power matching, so as to solve the problem that the power matching method of the prior art cannot meet the rapid adaptation requirements of engineering machines of different tonnages.

[0004] In order to achieve the above-mentioned object, the first aspect of the present application provides a method for controlling power matching, which is applied to a controller of an engineering machinery, wherein the engineering machinery further comprises an engine, a hydraulic pump solenoid valve and a hydraulic pump, the controller communicates with the engine and the hydraulic pump solenoid valve respectively, and the hydraulic pump solenoid valve is connected to the hydraulic pump, and the method comprises:

[0005] Determine the maximum torque percentage and the minimum torque percentage corresponding to the current throttle gear position;

[0006] Get the actual torque percentage of the engine;

[0007] The regulating current output to the hydraulic pump solenoid valve is adjusted according to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage to match the power of the engine and the hydraulic pump.

[0008] In the embodiment of the present application, determining the maximum torque percentage and the minimum torque percentage corresponding to the current throttle gear position includes:

[0009] Determine the maximum speed and minimum speed corresponding to the current throttle gear;

[0010] A maximum torque percentage is determined based on the maximum speed, and a minimum torque percentage is determined based on the minimum speed.

[0011] In the embodiment of the present application, determining the maximum speed and the minimum speed corresponding to the current throttle gear position includes:

[0012] Obtaining an engine external characteristic curve of the engine;

[0013] Based on the engine external characteristic curve, the lowest speed for engine fuel consumption and the maximum speed for engine output torque are determined respectively;

[0014] Determine the speed corresponding to the current throttle gear;

[0015] Combined with the maximum speed of the engine output torque, the maximum speed corresponding to the current throttle gear is determined according to the engine speed adjustment rate and the speed corresponding to the current throttle gear;

[0016] Combined with the minimum speed for engine fuel consumption, the minimum speed corresponding to the current throttle gear is determined according to the engine speed adjustment rate and the speed corresponding to the current throttle gear.

[0017] In the embodiment of the present application, adjusting the regulating current output to the hydraulic pump solenoid valve according to the comparison result between the actual torque percentage and the maximum torque percentage and the minimum torque percentage includes:

[0018] When the actual torque percentage is less than or equal to the minimum torque percentage, the base current is determined as the regulating current.

[0019] In the embodiment of the present application, adjusting the regulating current output to the hydraulic pump solenoid valve according to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage includes:

[0020] When the actual torque percentage is greater than the minimum torque percentage and the actual torque percentage is less than or equal to the maximum torque percentage, the adjustment proportional coefficient is determined according to the basic current, the target current, the maximum torque percentage and the minimum torque percentage;

[0021] The current is increased from the base current to the target current according to the adjustment proportional coefficient and the actual torque percentage control.

[0022] In an embodiment of the present application, the method further includes:

[0023] Determine whether the construction machinery is in an idling state or cancel the idling state;

[0024] When it is determined that the construction machinery is in an idling state, the basic current is controlled to increase from a preset current value in a ramp function rising manner;

[0025] When it is determined that the construction machine is in the canceled idle state, the target current is determined as the basic current.

[0026] In the embodiment of the present application, adjusting the regulating current output to the hydraulic pump solenoid valve according to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage includes:

[0027] When the actual torque percentage is greater than the maximum torque percentage, the target current is determined as the regulating current.

[0028] A second aspect of the present application provides a controller, comprising:

[0029] a memory configured to store instructions; and

[0030] The processor is configured to call instructions from the memory and implement the above method for controlling power matching when executing the instructions.

[0031] A third aspect of the present application provides an engineering machine, comprising:

[0032] Controller;

[0033] an engine, communicating with the controller;

[0034] A hydraulic pump solenoid valve, communicating with the controller;

[0035] A hydraulic pump is connected to a hydraulic pump solenoid valve.

[0036] A fourth aspect of the present application provides a machine-readable storage medium having instructions stored thereon, the instructions being used to enable a machine to execute the above-mentioned method for controlling power matching.

[0037] Through the above technical solution, the controller determines the maximum torque percentage and the minimum torque percentage corresponding to the current throttle gear, and obtains the actual torque percentage of the engine, and then adjusts the regulating current output to the hydraulic pump solenoid valve according to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage, so as to match the power of the engine and the hydraulic pump. The present application controls the power matching of the engine and the hydraulic pump by adjusting the regulating current output to the hydraulic pump solenoid valve according to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage, so as to meet the rapid adaptation requirements of engineering machinery of different tonnages.

[0038] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. In the accompanying drawings:

[0040] Figure 1 A flow chart of a method for controlling power matching according to an embodiment of the present application is schematically shown;

[0041] Figure 2 A flowchart of a method for controlling power matching according to a specific embodiment of the present application is schematically shown;

[0042] Figure 3 The schematic diagram shows a structural block diagram of a controller according to an embodiment of the present application. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the specific implementation methods described herein are only used to illustrate and explain the embodiments of the present application, and are not used to limit the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0044] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0045] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0046] Figure 1 A flow chart of a method for controlling power matching according to an embodiment of the present application is schematically shown. Figure 1 As shown, an embodiment of the present application provides a method for controlling power matching, which is applied to a controller of an engineering machine, wherein the engineering machine also includes an engine, a hydraulic pump solenoid valve and a hydraulic pump, the controller communicates with the engine and the hydraulic pump solenoid valve respectively, and the hydraulic pump solenoid valve is connected to the hydraulic pump, and the method may include the following steps:

[0047] Step 101, determining the maximum torque percentage and the minimum torque percentage corresponding to the current throttle gear position;

[0048] Step 102, obtaining the actual torque percentage of the engine;

[0049] Step 103: According to the comparison result between the actual torque percentage and the maximum torque percentage and the minimum torque percentage, the regulating current output to the hydraulic pump solenoid valve is adjusted to match the power of the engine and the hydraulic pump.

[0050] The method for controlling power matching provided in the embodiment of the present application can be applied to an excavator or other engineering machinery. The engineering machinery includes but is not limited to a controller, an engine, a hydraulic pump solenoid valve and a hydraulic pump. The controller communicates with the engine and the hydraulic pump solenoid valve respectively. The controller can output a regulating current to the hydraulic pump solenoid valve. The hydraulic pump solenoid valve is connected to the hydraulic pump, and the hydraulic pump solenoid valve can adjust the opening of the valve according to the regulating current to adjust the power of the hydraulic pump.

[0051] In an embodiment of the present application, the controller can determine the maximum torque percentage and the minimum torque percentage corresponding to the current throttle gear. Specifically, the controller can obtain the engine external characteristic curve, and determine the minimum speed of the engine fuel consumption and the maximum speed of the engine output torque by consulting the engine external characteristic curve. The controller can determine the speed corresponding to each throttle gear in advance according to the number of throttle gears. In this way, in actual application, the controller can determine the speed corresponding to the current throttle gear, and then determine the maximum speed corresponding to the current throttle gear according to the engine speed adjustment and the speed corresponding to the current throttle gear in combination with the maximum speed of the engine output torque, and determine the minimum speed corresponding to the current throttle gear according to the engine speed adjustment and the speed corresponding to the current throttle gear in combination with the minimum speed of the engine fuel consumption. Subsequently, the controller can determine the maximum torque percentage according to the maximum speed, and determine the minimum torque percentage according to the minimum speed. The torque percentage satisfies formula (1):

[0052]

[0053] Among them, T is the torque percentage, P is the power, and n is the speed.

[0054] After determining the maximum torque percentage and the minimum torque percentage corresponding to the current throttle gear, the controller can obtain the actual torque percentage of the engine in the working state. When the actual torque percentage is less than or equal to the minimum torque percentage, the controller can determine the basic current as the regulating current. When the actual torque percentage is greater than the minimum torque percentage and the actual torque percentage is less than or equal to the maximum torque percentage, the controller can determine the regulating proportional coefficient according to the basic current, the target current, the maximum torque percentage, and the minimum torque percentage, and then control the regulating current from the basic current to the target current according to the regulating proportional coefficient and the actual torque percentage. When the actual torque percentage is greater than the maximum torque percentage, the target current is determined as the regulating current. Among them, according to the specification parameters of the hydraulic pump, the corresponding target current at different engine speeds can be calculated. The basic current can be determined after debugging according to the target current. In this way, the power of the engine and the hydraulic pump can be matched to reduce energy loss.

[0055] Through the above technical solution, the controller determines the maximum torque percentage and the minimum torque percentage corresponding to the current throttle gear, and obtains the actual torque percentage of the engine, and then adjusts the regulating current output to the hydraulic pump solenoid valve according to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage, so as to match the power of the engine and the hydraulic pump. The present application controls the power matching of the engine and the hydraulic pump by adjusting the regulating current output to the hydraulic pump solenoid valve according to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage, so as to meet the rapid adaptation requirements of engineering machinery of different tonnages.

[0056] In the embodiment of the present application, step 101, determining the maximum torque percentage and the minimum torque percentage corresponding to the current throttle gear position may include:

[0057] Determine the maximum speed and minimum speed corresponding to the current throttle gear;

[0058] A maximum torque percentage is determined based on the maximum speed, and a minimum torque percentage is determined based on the minimum speed.

[0059] In an embodiment of the present application, the controller can determine the maximum torque percentage and the minimum torque percentage corresponding to the current throttle gear. Specifically, the controller can obtain the engine external characteristic curve, and determine the minimum speed of the engine fuel consumption and the maximum speed of the engine output torque by consulting the engine external characteristic curve. Then, the controller can determine the speed corresponding to the current throttle gear, and then determine the maximum speed corresponding to the current throttle gear according to the engine speed adjustment and the speed corresponding to the current throttle gear in combination with the maximum speed of the engine output torque, and determine the minimum speed corresponding to the current throttle gear according to the engine speed adjustment and the speed corresponding to the current throttle gear in combination with the minimum speed of the engine fuel consumption. Subsequently, the controller can determine the maximum torque percentage according to the maximum speed, and determine the minimum torque percentage according to the minimum speed. The relationship between the torque percentage and the speed satisfies formula (1). By determining the maximum torque percentage and the minimum torque percentage corresponding to the current throttle gear, it is convenient to determine the regulating current in combination with the actual torque percentage.

[0060] In the embodiment of the present application, determining the maximum speed and the minimum speed corresponding to the current throttle gear may include:

[0061] Obtaining an engine external characteristic curve of the engine;

[0062] Based on the engine external characteristic curve, the lowest speed for engine fuel consumption and the maximum speed for engine output torque are determined respectively;

[0063] Determine the speed corresponding to the current throttle gear;

[0064] Combined with the maximum speed of the engine output torque, the maximum speed corresponding to the current throttle gear is determined according to the engine speed adjustment rate and the speed corresponding to the current throttle gear;

[0065] Combined with the minimum speed for engine fuel consumption, the minimum speed corresponding to the current throttle gear is determined according to the engine speed adjustment rate and the speed corresponding to the current throttle gear.

[0066] In an embodiment of the present application, in order to determine the maximum torque percentage and the minimum torque percentage corresponding to the current throttle gear, the controller can first determine the maximum speed and the minimum speed corresponding to the current throttle gear. The controller can obtain the engine external characteristic curve, and determine the minimum speed of the engine fuel consumption and the maximum speed of the engine output torque by consulting the engine external characteristic curve. The controller can determine the speed corresponding to each throttle gear in advance according to the number of throttle gears. In actual application, the controller can determine the speed corresponding to the current throttle gear, and then determine the maximum speed corresponding to the current throttle gear according to the engine speed adjustment and the speed corresponding to the current throttle gear in combination with the maximum speed of the engine output torque, and determine the minimum speed corresponding to the current throttle gear according to the engine speed adjustment and the speed corresponding to the current throttle gear in combination with the minimum speed of the engine fuel consumption. Among them, the maximum speed of the engine output torque can be used to limit the range of the maximum speed corresponding to the current throttle gear, and the minimum speed of the engine fuel consumption can be used to limit the range of the minimum speed corresponding to the current throttle gear.

[0067] In an embodiment of the present application, the method may further include:

[0068] Determine whether the construction machinery is in an idling state or cancel the idling state;

[0069] When it is determined that the construction machinery is in an idling state, the basic current is controlled to increase from a preset current value in a ramp function rising manner;

[0070] When it is determined that the construction machine is in the canceled idle state, the target current is determined as the basic current.

[0071] In an embodiment of the present application, the controller can determine whether the engineering machinery is in an idle state or cancels the idle state. The idle state refers to the state in which the engine speed of the engineering machinery drops to a preset speed after no operation for a period of time. The canceled idle state refers to the state in which the engineering machinery resumes operation after being in an idle state. When the engineering machinery is in an idle state, the engine speed decreases, and the adjustment current is zero at this time. If the adjustment current increases rapidly from a larger base current, the engine speed will drop or the engine speed cannot rise normally to the target speed. Therefore, when the engineering machinery is in an idle state, the controller can control the base current to rise slowly from the preset current value in a ramp function rising manner, thereby ensuring that the engine can respond in time. The preset current value is a smaller current value and can be determined according to actual conditions. When the engineering machinery is in the canceled idle state, in order to enable the adjustment current to respond quickly to the target current, the controller can determine the target current as the base current. In this way, the segmented control of the base current can be achieved to meet the needs of the engineering machinery under different working conditions and reduce the possibility of engine stalling.

[0072] In the embodiment of the present application, adjusting the regulating current output to the hydraulic pump solenoid valve according to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage may include:

[0073] When the actual torque percentage is less than or equal to the minimum torque percentage, the base current is determined as the regulating current.

[0074] In an embodiment of the present application, based on a calibration measurement protocol, such as a CAN Calibration Protocol (CCP) based on a CAN bus, the controller can determine the regulating current output to the hydraulic pump solenoid valve according to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage. When the actual torque percentage is less than or equal to the minimum torque percentage, the controller can determine the base current as the regulating current. In this way, rapid matching of the engine and the hydraulic pump can be achieved when the external load changes.

[0075] In the embodiment of the present application, adjusting the regulating current output to the hydraulic pump solenoid valve according to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage may include:

[0076] When the actual torque percentage is greater than the minimum torque percentage and the actual torque percentage is less than or equal to the maximum torque percentage, the adjustment proportional coefficient is determined according to the basic current, the target current, the maximum torque percentage and the minimum torque percentage;

[0077] The current is increased from the base current to the target current according to the adjustment proportional coefficient and the actual torque percentage control.

[0078] In the embodiment of the present application, based on the calibration measurement protocol, the controller can determine the regulating current output to the hydraulic pump solenoid valve according to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage. When the actual torque percentage is greater than the minimum torque percentage and the actual torque percentage is less than or equal to the maximum torque percentage, the controller can determine the regulating proportional coefficient according to the basic current, the target current, the maximum torque percentage, and the minimum torque percentage, and then control the regulating current to increase from the basic current to the target current according to the regulating proportional coefficient and the actual torque percentage. In this process, the regulating proportional coefficient satisfies formula (2):

[0079]

[0080] Therefore, it can be concluded that the regulated current satisfies formula (3):

[0081]

[0082] Among them, I is the adjustment current, K is the adjustment proportional coefficient, Iar is the target current, I base is the basic current, Tq max is the percentage of maximum torque, Tq min is the minimum torque percentage, T act is the actual torque percentage.

[0083] This allows for quick matching of the engine and hydraulic pump when external loads change.

[0084] In the embodiment of the present application, adjusting the regulating current output to the hydraulic pump solenoid valve according to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage may include:

[0085] When the actual torque percentage is greater than the maximum torque percentage, the target current is determined as the regulating current.

[0086] In the embodiment of the present application, based on the calibration measurement protocol, the controller can determine the regulating current output to the hydraulic pump solenoid valve according to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage. When the actual torque percentage is greater than the maximum torque percentage, the controller can determine the target current as the regulating current. In this way, the engine and the hydraulic pump can be quickly matched when the external load changes.

[0087] Figure 2 A flowchart of a method for controlling power matching according to a specific embodiment of the present application is schematically shown. Figure 2 As shown, in a specific embodiment of the present application, the method for controlling power matching includes:

[0088] S1, obtaining an engine external characteristic curve;

[0089] S2, determining the minimum speed of the engine fuel consumption and the maximum speed of the engine output torque;

[0090] S3, determining the speed corresponding to the current throttle gear position;

[0091] S4, obtaining engine speed regulation rate;

[0092] S5, determining the maximum torque percentage and the minimum torque percentage corresponding to the current throttle gear position;

[0093] S6, judging whether the actual torque percentage of the engine is greater than the maximum torque percentage. If so, proceeding to S8;

[0094] S7, determine whether the actual torque percentage of the engine is less than or equal to the minimum torque percentage. If so, proceed to S10;

[0095] S8, adjust the current to be equal to the target current;

[0096] S9, when both S6 and S7 are no, the current is adjusted to increase from the base current to the target current according to the actual torque percentage increase;

[0097] S10, the regulated current is equal to the basic current.

[0098] In a specific embodiment of the present application, the controller can obtain the engine external characteristic curve, and then determine the minimum speed of the engine fuel consumption and the maximum speed of the engine output torque by consulting the engine external characteristic curve. In addition, the controller can determine the speed corresponding to the current throttle gear, and obtain the engine speed regulation rate. Then, the maximum speed corresponding to the current throttle gear and the minimum speed corresponding to the current throttle gear are determined in combination with the speed corresponding to the current throttle gear and the engine speed regulation rate, and then the maximum torque percentage and the minimum torque percentage corresponding to the current throttle gear are obtained. The controller can simultaneously determine whether the actual torque percentage of the engine is greater than the maximum torque percentage, and determine whether the actual torque percentage of the engine is less than or equal to the minimum torque percentage. When the actual torque percentage of the engine is greater than the maximum torque percentage, the controller can make the adjustment current equal to the target current. When the actual torque percentage of the engine is less than or equal to the minimum torque percentage, the controller can make the adjustment current equal to the basic current. When the actual torque percentage of the engine is less than or equal to the maximum torque percentage and greater than the minimum torque percentage, the controller can control the adjustment current to rise from the basic current to the target current according to the increase of the actual torque percentage. In this way, rapid matching of the engine and hydraulic pump power can be achieved.

[0099] Figure 3 The structure block diagram of a controller according to an embodiment of the present application is schematically shown. Figure 3 As shown, an embodiment of the present application provides a controller, which may include:

[0100] Memory 310, configured to store instructions; and

[0101] The processor 320 is configured to call instructions from the memory 310 and implement the above-mentioned method for controlling power matching when executing the instructions.

[0102] Specifically, in the embodiment of the present application, the processor 320 may be configured to:

[0103] Determine the maximum torque percentage and the minimum torque percentage corresponding to the current throttle gear position;

[0104] Get the actual torque percentage of the engine;

[0105] The regulating current output to the hydraulic pump solenoid valve is adjusted according to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage to match the power of the engine and the hydraulic pump.

[0106] Furthermore, the processor 320 may be configured to:

[0107] Determine the maximum speed and minimum speed corresponding to the current throttle gear;

[0108] A maximum torque percentage is determined based on the maximum speed, and a minimum torque percentage is determined based on the minimum speed.

[0109] Furthermore, the processor 320 may be configured to:

[0110] Obtaining an engine external characteristic curve of the engine;

[0111] Based on the engine external characteristic curve, the lowest speed for engine fuel consumption and the maximum speed for engine output torque are determined respectively;

[0112] Determine the speed corresponding to the current throttle gear;

[0113] Combined with the maximum speed of the engine output torque, the maximum speed corresponding to the current throttle gear is determined according to the engine speed adjustment rate and the speed corresponding to the current throttle gear;

[0114] Combined with the minimum speed for engine fuel consumption, the minimum speed corresponding to the current throttle gear is determined according to the engine speed adjustment rate and the speed corresponding to the current throttle gear.

[0115] Furthermore, the processor 320 may be configured to:

[0116] When the actual torque percentage is less than or equal to the minimum torque percentage, the base current is determined as the regulating current.

[0117] Furthermore, the processor 320 may be configured to:

[0118] When the actual torque percentage is greater than the minimum torque percentage and the actual torque percentage is less than or equal to the maximum torque percentage, the adjustment proportional coefficient is determined according to the basic current, the target current, the maximum torque percentage and the minimum torque percentage;

[0119] The current is increased from the base current to the target current according to the adjustment proportional coefficient and the actual torque percentage control.

[0120] Furthermore, the processor 320 may be configured to:

[0121] Determine whether the construction machinery is in an idling state or cancel the idling state;

[0122] When it is determined that the construction machinery is in an idling state, the basic current is controlled to increase from a preset current value in a ramp function rising manner;

[0123] When it is determined that the construction machine is in the canceled idle state, the target current is determined as the basic current.

[0124] Furthermore, the processor 320 may be configured to:

[0125] When the actual torque percentage is greater than the maximum torque percentage, the target current is determined as the regulating current.

[0126] Through the above technical solution, the controller determines the maximum torque percentage and the minimum torque percentage corresponding to the current throttle gear, and obtains the actual torque percentage of the engine, and then adjusts the regulating current output to the hydraulic pump solenoid valve according to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage, so as to match the power of the engine and the hydraulic pump. The present application controls the power matching of the engine and the hydraulic pump by adjusting the regulating current output to the hydraulic pump solenoid valve according to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage, so as to meet the rapid adaptation requirements of engineering machinery of different tonnages.

[0127] The present application also provides an engineering machine, which may include:

[0128] Controller;

[0129] an engine, communicating with the controller;

[0130] A hydraulic pump solenoid valve, communicating with the controller;

[0131] A hydraulic pump is connected to a hydraulic pump solenoid valve.

[0132] In an embodiment of the present application, the engineering machinery includes but is not limited to a controller, an engine, a hydraulic pump solenoid valve and a hydraulic pump. The controller communicates with the engine and the hydraulic pump solenoid valve respectively. According to the actual torque percentage, the maximum torque percentage and the minimum torque percentage of the engine, the controller can output a regulating current to the hydraulic pump solenoid valve. The hydraulic pump solenoid valve is connected to the hydraulic pump. The hydraulic pump solenoid valve can adjust the opening of the valve according to the regulating current to adjust the power of the hydraulic pump. In this way, through the controller, the engine, the hydraulic pump solenoid valve and the hydraulic pump, a rapid matching of the engine and hydraulic pump power can be achieved.

[0133] An embodiment of the present application also provides a machine-readable storage medium, on which instructions are stored, and the instructions are used to enable a machine to execute the above-mentioned method for controlling power matching.

[0134] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0135] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0136] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0137] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0138] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0139] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0140] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0141] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0142] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A method for controlling power matching, characterized in that: A controller applied to an engineering machine, the engineering machine further comprising an engine, a hydraulic pump solenoid valve and a hydraulic pump, the controller communicating with the engine and the hydraulic pump solenoid valve respectively, the hydraulic pump solenoid valve being connected to the hydraulic pump, the method comprising: Determine the maximum torque percentage and the minimum torque percentage corresponding to the current throttle gear position; Obtaining an actual torque percentage of the engine; The regulating current output to the hydraulic pump solenoid valve is adjusted according to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage, so as to match the power of the engine with that of the hydraulic pump.

2. The method according to claim 1, characterized in that Determining the maximum torque percentage and the minimum torque percentage corresponding to the current throttle gear position includes: Determine the maximum speed and minimum speed corresponding to the current throttle gear; The maximum torque percentage is determined based on the maximum rotational speed, and the minimum torque percentage is determined based on the minimum rotational speed.

3. The method according to claim 2, characterized in that Determining the maximum speed and the minimum speed corresponding to the current throttle gear position includes: Obtaining an engine external characteristic curve of the engine; Based on the engine external characteristic curve, determining the minimum speed for engine fuel consumption and the maximum speed for engine output torque respectively; Determine the speed corresponding to the current throttle gear position; In combination with the maximum speed of the engine output torque, the maximum speed corresponding to the current throttle gear position is determined according to the engine speed regulation rate and the speed corresponding to the current throttle gear position; In combination with the minimum speed for fuel consumption of the engine, the minimum speed corresponding to the current throttle gear position is determined according to the engine speed regulation rate and the speed corresponding to the current throttle gear position.

4. The method according to claim 1, characterized in that: According to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage, the regulating current output to the hydraulic pump solenoid valve is adjusted, including: When the actual torque percentage is less than or equal to the minimum torque percentage, a base current is determined as the regulating current.

5. The method according to claim 4, characterized in that According to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage, the regulating current output to the hydraulic pump solenoid valve is adjusted, including: When the actual torque percentage is greater than the minimum torque percentage and the actual torque percentage is less than or equal to the maximum torque percentage, determining the adjustment proportional coefficient according to the basic current, the target current, the maximum torque percentage, and the minimum torque percentage; The regulating current is controlled to increase from the basic current to the target current according to the regulating proportional coefficient and the actual torque percentage.

6. The method according to claim 5, characterized in that The method further comprises: Determining whether the engineering machinery is in an idle state or canceling the idle state; When it is determined that the engineering machine is in an idle state, controlling the basic current to increase from a preset current value in a ramp function manner; When it is determined that the construction machine is in the canceled idle state, the target current is determined as the basic current.

7. The method according to claim 1, characterized in that According to the comparison result of the actual torque percentage with the maximum torque percentage and the minimum torque percentage, the regulating current output to the hydraulic pump solenoid valve is adjusted, including: When the actual torque percentage is greater than the maximum torque percentage, the target current is determined as the adjustment current.

8. A controller, characterized in that: include: a memory configured to store instructions; as well as A processor is configured to call the instructions from the memory and implement the method for controlling power matching according to any one of claims 1 to 7 when executing the instructions.

9. An engineering machine, characterized in that: include: The controller according to claim 8; an engine in communication with the controller; a hydraulic pump solenoid valve in communication with the controller; A hydraulic pump is connected to the hydraulic pump solenoid valve.

10. A machine-readable storage medium, characterized in that: The machine-readable storage medium stores instructions, and the instructions are used to enable a machine to execute the method for controlling power matching according to any one of claims 1 to 7.

Images