CN110984283A - Energy-saving control method and device and excavator - Google Patents
Energy-saving control method and device and excavator Download PDFInfo
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- CN110984283A CN110984283A CN201911353653.7A CN201911353653A CN110984283A CN 110984283 A CN110984283 A CN 110984283A CN 201911353653 A CN201911353653 A CN 201911353653A CN 110984283 A CN110984283 A CN 110984283A
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- pressure value
- hydraulic oil
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- excavator
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2025—Particular purposes of control systems not otherwise provided for
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
Abstract
The embodiment of the invention provides an energy-saving control method and device and an excavator, and relates to the field of energy-saving control. The energy-saving control method comprises the following steps: acquiring a front pump pressure value of a front pump of the excavator, a movable arm large cavity pressure value of a movable arm and a movable arm pilot pressure value of the movable arm descending; calculating the total amount of hydraulic oil available for the excavator operation according to the front pump pressure value, the movable arm large cavity pressure value and the movable arm pilot pressure value; and controlling the excavator to supply oil to the operating parts of the excavator according to the total amount of the hydraulic oil. The energy-saving control method and device and the excavator can convert potential energy of the descending of the movable arm into kinetic energy of actions of working components such as an arm and a swing, and therefore the energy-saving effect is achieved.
Description
Technical Field
The invention relates to the field of energy-saving control, in particular to an energy-saving control method, an energy-saving control device and an excavator.
Background
At present, the excavator usually achieves the purpose of saving oil by methods of optimizing an engine curve, improving the efficiency of a hydraulic system and the like, but the common oil saving method achieves extremely high absolute oil saving and is difficult to further reduce the oil consumption. Some actions in the whole excavator working cycle do not need so much energy, and some actions can work by utilizing self potential energy, but the energy is not effectively controlled to be converted into effective energy, so that unnecessary waste of energy is caused.
Disclosure of Invention
An object of the present invention includes, for example, providing an energy saving control method, device, and excavator, which can convert potential energy of boom lowering into kinetic energy of operation of a working member such as an arm, swing, or the like, thereby achieving an energy saving effect.
Embodiments of the invention may be implemented as follows:
in a first aspect, an embodiment provides an energy saving control method for an excavator, where the method includes: acquiring a front pump pressure value of a front pump of the excavator, a movable arm large cavity pressure value of a movable arm and a movable arm pilot pressure value of the movable arm descending; calculating the total amount of hydraulic oil available for the excavator operation according to the front pump pressure value, the movable arm large cavity pressure value and the movable arm pilot pressure value; and controlling the excavator to supply oil to the operating parts of the excavator according to the total amount of the hydraulic oil.
The embodiment of the invention discloses an energy-saving control method, which comprises the following steps: and determining the potential energy of the descending of the movable arm and the corresponding hydraulic oil quantity by acquiring a front pump pressure value, a movable arm large cavity pressure value and a movable arm pilot pressure value. And enabling the hydraulic oil quantity corresponding to the potential energy reduction to flow to working components such as an arm and a rotary component to be used as power input of the working components. That is, the embodiment of the present invention can convert potential energy of boom lowering into kinetic energy of operation of a working member such as an arm and a swing, thereby achieving an energy saving effect.
In an alternative embodiment, the method further comprises: acquiring an operation pilot pressure value of the operation component; the step of calculating the total amount of hydraulic oil available for the excavator work according to the front pump pressure value, the boom large cavity pressure value and the boom pilot pressure value comprises the following steps: calculating a hydraulic oil displacement output value in the front pump according to the front pump pressure value and the movable arm large cavity pressure value; determining the hydraulic oil regeneration flow of the movable arm according to the movable arm pilot pressure value and the operation pilot pressure value; and calculating the total amount of the hydraulic oil according to the hydraulic oil displacement output value and the hydraulic oil regeneration flow.
In an alternative embodiment, the step of calculating the hydraulic oil displacement output value in the front pump according to the front pump pressure value and the boom large chamber pressure value includes: calculating a pressure difference value between the pressure value of the movable arm large cavity and the pressure value of the front pump; determining the displacement output value based on the pressure differential.
In an alternative embodiment, the step of determining the hydraulic oil regeneration flow rate of the boom according to the boom pilot pressure value and the work pilot pressure value includes: determining a regeneration valve current of the boom according to the boom pilot pressure value and the operation pilot pressure value; and determining the regeneration flow of the hydraulic oil according to the regeneration valve current.
In an optional embodiment, the step of calculating the total amount of hydraulic oil according to the hydraulic oil displacement output value and the hydraulic oil regeneration flow rate includes: and calculating the sum of the hydraulic oil displacement output value and the hydraulic oil regeneration flow, and taking the sum of the hydraulic oil displacement output value and the hydraulic oil regeneration flow as the total hydraulic oil amount.
In a second aspect, an embodiment provides an energy saving control apparatus for an excavator, the apparatus including:
an acquisition module: the system comprises a pressure sensor, a pressure sensor and a control system, wherein the pressure sensor is used for acquiring a front pump pressure value of a front pump of the excavator, a movable arm large cavity pressure value of a movable arm and a movable arm pilot pressure value of the movable arm descending; a calculation module: the hydraulic oil total amount calculating device is used for calculating the total amount of hydraulic oil available for the excavator operation according to the front pump pressure value, the movable arm large cavity pressure value and the movable arm pilot pressure value; a control module: and controlling the excavator to supply oil to the working part according to the total amount of the hydraulic oil.
In an optional embodiment, the obtaining module is further configured to: acquiring an operation pilot pressure value of the operation component; the calculation module is further to: calculating a hydraulic oil displacement output value in the front pump according to the front pump pressure value and the movable arm large cavity pressure value; determining the hydraulic oil regeneration flow of the movable arm according to the movable arm pilot pressure value and the operation pilot pressure value; and calculating the total amount of the hydraulic oil according to the hydraulic oil displacement output value and the hydraulic oil regeneration flow.
In an alternative embodiment, the calculation module is further configured to: calculating a pressure difference value between the pressure value of the movable arm large cavity and the pressure value of the front pump; determining the displacement output value based on the pressure differential.
In an alternative embodiment, the calculation module is further configured to: determining a regeneration valve current of the boom according to the boom pilot pressure value and the operation pilot pressure value; and determining the regeneration flow of the hydraulic oil according to the regeneration valve current.
The energy-saving control device of the embodiment of the invention comprises: and determining the potential energy of the descending of the movable arm and the corresponding hydraulic oil quantity by acquiring a front pump pressure value, a movable arm large cavity pressure value and a movable arm pilot pressure value. And enabling the hydraulic oil quantity corresponding to the potential energy reduction to flow to working components such as an arm and a rotary component to be used as power input of the working components. That is, the embodiment of the present invention can convert potential energy of boom lowering into kinetic energy of operation of a working member such as an arm and a swing, thereby achieving an energy saving effect.
In a third aspect, an embodiment provides an excavator, including a controller, where an energy saving control program is stored on the controller, and when the energy saving control program is executed by the controller, the method according to any one of the foregoing embodiments is implemented.
The excavator of the embodiment of the invention comprises: and determining the potential energy of the descending of the movable arm and the corresponding hydraulic oil quantity by acquiring a front pump pressure value, a movable arm large cavity pressure value and a movable arm pilot pressure value. And enabling the hydraulic oil quantity corresponding to the potential energy reduction to flow to working components such as an arm and a rotary component to be used as power input of the working components. That is, the embodiment of the present invention can convert potential energy of boom lowering into kinetic energy of operation of a working member such as an arm and a swing, thereby achieving an energy saving effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a block diagram schematically illustrating the construction of an excavator according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of a flow of an energy saving control method according to an embodiment of the present invention;
FIG. 3 is a schematic block flow diagram of the substeps of step S300 of FIG. 2;
FIG. 4 is a block diagram illustrating a flow of substeps of step S310 of FIG. 3;
FIG. 5 is a schematic block flow diagram of the substeps of step S320 in FIG. 3;
fig. 6 is a block diagram schematically illustrating the structure of the energy-saving control device in fig. 1.
Icon: 10-an excavator; 100-energy-saving control device; 110-an obtaining module; 120-a calculation module; 130-a control module; 200-a controller.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the invention provides an energy-saving control method and an energy-saving control device 100, which are applied to an excavator 10. The excavator 10 includes an energy saving control device 100 and a controller 200. The power saving control apparatus 100 includes at least one software function module which may be stored in the controller 200 in the form of software or firmware (firmware) or fixed in an Operating System (OS) of a server. The controller 200 is used to execute executable modules stored therein, such as software functional modules and computer programs included in the energy saving control device 100.
The controller 200 may be an integrated circuit chip having signal processing capabilities. The controller 200 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor. The controller 200 may also be any conventional processor or the like.
The controller 200 is programmed with an energy saving control program, and when the controller 200 receives an execution instruction, the control program is executed.
Referring to fig. 2, the energy saving control method includes the following steps.
It should be noted that, in the embodiment of the present invention, when the boom descends and the arm unloads, and other composite actions are performed, the potential energy of the boom is converted into the energy of other actions, so as to avoid unnecessary throttling loss; when the movable arm descends and the bucket rod unloads and other compound actions, the controller 200 reasonably matches the output of the engine and the main pump according to the external load, and under the condition of meeting the action performance, the output of the main pump is reduced, even the output of the main pump is closed, and the purpose of saving oil is achieved.
Step S100: a front pump pressure value of a front pump of the excavator 10, a boom large chamber pressure value of the boom, and a boom pilot pressure value of boom lowering are obtained.
Alternatively, the front pump pressure value may be detected by a pressure sensor provided in the front pump, the pressure value of the boom chamber may be detected by a pressure sensor provided in the boom chamber, and the boom pilot pressure value may be detected by an angle of the handle or a pressure sensor in the pilot valve.
It should be appreciated that the front pump pressure value can be used to reflect the amount of hydraulic oil in the front pump, the boom big chamber pressure value can be used to reflect the amount of hydraulic oil in the boom big chamber, and the boom pilot pressure value can be used to reflect the condition after the boom is lowered, including the amount of hydraulic oil in the boom big chamber at that time. The hydraulic oil amount of the boom large chamber at the pilot pressure value, that is, the hydraulic oil amount after the boom is lowered at this time can be obtained by the boom pilot pressure value and the pilot pressure discharge curve corresponding thereto. And the hydraulic oil quantity in the movable arm large cavity at the moment corresponds to the pressure value of the movable arm large cavity.
In some embodiments, the energy saving control method may further include step S200: an operation pilot pressure value of an operation component is acquired.
It should be noted that the parameter value obtained in step S100 can calculate the hydraulic oil amount provided, that is, the hydraulic oil amount of the energy saving portion; and step S200 is for calculating the amount of hydraulic oil required by the working element at the time of working. It should be understood that the relationship between the amount of hydraulic oil that can be supplied when the boom is lowered and the amount of hydraulic oil required for the work of the working element: the hydraulic oil quantity provided by energy saving is larger than or equal to the required hydraulic oil quantity, and the hydraulic oil can be directly provided for the working part through the hydraulic oil of the energy saving part; if the hydraulic oil quantity provided in an energy-saving manner is smaller than the required hydraulic oil quantity, the hydraulic oil quantity provided in an energy-saving manner can reduce the hydraulic oil discharge capacity of the main pump.
Step S300: and calculating the total amount of hydraulic oil available for the operation of the excavator 10 according to the front pump pressure value, the boom large cavity pressure value and the boom pilot pressure value.
In the embodiment of the invention, the hydraulic oil amount before and after the boom descends can be obtained through the boom large cavity pressure value and the boom pilot pressure value, so that the hydraulic oil amount available in the boom large cavity can be obtained by making a difference between the boom large cavity pressure value and the boom pilot pressure value, that is, the hydraulic oil does not return to the oil tank, and the hydraulic oil flows to the working part, so that the energy is saved.
In the step S300, the total amount of hydraulic oil available for the operation of the excavator 10 is calculated by the front pump pressure value, the boom large chamber pressure value, and the boom pilot pressure value, and the output of the main pump displacement is determined by the constant power displacement curve, the pilot pressure displacement curve, and the rear pump displacement reduction curve, respectively. The displacement output of the main pump and the hydraulic oil in the boom large cavity flow to the working component together and drive the working component to act.
It will be appreciated that the work member may be a stick, a rotary machine or other external mechanical structure. That is, the potential energy of the boom descending according to the embodiment of the present invention may be converted into the kinetic energy of the arm or the rotary machine, or the kinetic energy of other components.
Referring to fig. 3, in an alternative embodiment, the step S300 may include a substep S310, a substep S320, and a substep S330.
Substep S310: and calculating the hydraulic oil displacement output value in the front pump according to the front pump pressure value and the movable arm large cavity pressure value.
Referring to fig. 4, the sub-step S310 may further include a sub-step S311 and a sub-step S312.
Substep S311: and calculating the pressure difference value between the pressure value of the large cavity of the movable arm and the pressure value of the front pump.
Substep S312: and determining a displacement output value according to the pressure difference value.
It should be appreciated that in the sub-step S311, the power master chamber pressure value corresponds to the hydraulic oil amount, and the front pump pressure value corresponds to the hydraulic oil amount, and the above-mentioned pressure difference value can be used to obtain the displacement output value.
Substep S320: and determining the hydraulic oil regeneration flow of the boom according to the boom pilot pressure value and the operation pilot pressure value.
Referring to fig. 5, the substep S320 may further include a substep S321 and a substep S322.
Substep S321: and determining the regeneration valve current of the boom according to the boom pilot pressure value and the working pilot pressure value.
Substep S322: and determining the regeneration flow of the hydraulic oil according to the regeneration valve current.
Substep S330: and calculating the total amount of the hydraulic oil according to the output value of the displacement of the hydraulic oil and the regeneration flow of the hydraulic oil.
In this step S330, a substep S331 may be included: and calculating the sum of the hydraulic oil discharge output value and the hydraulic oil regeneration flow, and taking the sum of the hydraulic oil discharge output value and the hydraulic oil regeneration flow as the total hydraulic oil amount.
Step S400: the excavator 10 is controlled to supply oil to the working components of the excavator 10 according to the total amount of hydraulic oil.
The embodiment of the invention discloses an energy-saving control method, which comprises the following steps: and determining the potential energy of the descending of the movable arm and the corresponding hydraulic oil quantity by acquiring a front pump pressure value, a movable arm large cavity pressure value and a movable arm pilot pressure value. And enabling the hydraulic oil quantity corresponding to the potential energy reduction to flow to working components such as an arm and a rotary component to be used as power input of the working components. That is, the embodiment of the present invention can convert potential energy of boom lowering into kinetic energy of movement of a work member such as an arm and a swing, thereby achieving an energy saving effect.
Referring to fig. 6, an embodiment of the invention further provides an energy saving control apparatus 100, which includes: an acquisition module 110, a calculation module 120, and a control module 130.
The acquisition module 110: the method is used for acquiring a front pump pressure value of a front pump of the excavator 10, a boom large cavity pressure value of a boom and a boom pilot pressure value of boom descending.
In the embodiment of the present invention, the step S100 is executed by the obtaining module 110.
The calculation module 120: and is used for calculating the total amount of hydraulic oil available for the operation of the excavator 10 according to the front pump pressure value, the boom large cavity pressure value and the boom pilot pressure value.
In the embodiment of the present invention, the step S300 is executed by the calculating module 120.
The control module 130: for controlling the excavator 10 to supply oil to the working components according to the total amount of hydraulic oil.
In the embodiment of the present invention, the step S400 is executed by the control module 130.
In an alternative embodiment, the obtaining module 110 is further configured to: an operation pilot pressure value of an operation component is acquired.
In the embodiment of the present invention, the step S200 is executed by the obtaining module 110.
In an alternative embodiment, the calculation module 120 is further configured to: calculating a hydraulic oil displacement output value in the front pump according to the front pump pressure value and the movable arm large cavity pressure value; determining the regeneration flow of hydraulic oil of the movable arm according to the pilot pressure value of the movable arm and the operation pilot pressure value; and calculating the total amount of the hydraulic oil according to the output value of the displacement of the hydraulic oil and the regeneration flow of the hydraulic oil.
In an embodiment of the present invention, the sub-step S310, the sub-step S320, and the sub-step S330 are performed by the computing module 120.
In an alternative embodiment, the calculation module 120 is further configured to: calculating a pressure difference value between a pressure value of a large cavity of the movable arm and a pressure value of a front pump; and determining a displacement output value according to the pressure difference value.
In the embodiment of the present invention, the sub-step S311 and the sub-step S312 are performed by the calculating module 120.
In an alternative embodiment, the calculation module 120 is further configured to: determining the regeneration valve current of the movable arm according to the movable arm pilot pressure value and the operation pilot pressure value; and determining the regeneration flow of the hydraulic oil according to the regeneration valve current.
In the embodiment of the present invention, the sub-step S321 and the sub-step S322 are executed by the computing module 120.
The energy-saving control device 100 according to the embodiment of the present invention: and determining the potential energy of the descending of the movable arm and the corresponding hydraulic oil quantity by acquiring a front pump pressure value, a movable arm large cavity pressure value and a movable arm pilot pressure value. And enabling the hydraulic oil quantity corresponding to the potential energy reduction to flow to working components such as an arm and a rotary component to be used as power input of the working components. That is, the embodiment of the present invention can convert potential energy of boom lowering into kinetic energy of operation of a working member such as an arm and a swing, thereby achieving an energy saving effect.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: u disk, removable hard disk, read only memory, random access memory, magnetic or optical disk, etc. for storing program codes.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. An energy saving control method for an excavator, the method comprising:
acquiring a front pump pressure value of a front pump of the excavator, a movable arm large cavity pressure value of a movable arm and a movable arm pilot pressure value of the movable arm descending;
calculating the total amount of hydraulic oil available for the excavator operation according to the front pump pressure value, the movable arm large cavity pressure value and the movable arm pilot pressure value;
and controlling the excavator to supply oil to the operating parts of the excavator according to the total amount of the hydraulic oil.
2. The energy saving control method according to claim 1, characterized by further comprising:
acquiring an operation pilot pressure value of the operation component;
the step of calculating the total amount of hydraulic oil available for the excavator work according to the front pump pressure value, the boom large cavity pressure value and the boom pilot pressure value comprises the following steps:
calculating a hydraulic oil displacement output value in the front pump according to the front pump pressure value and the movable arm large cavity pressure value;
determining the hydraulic oil regeneration flow of the movable arm according to the movable arm pilot pressure value and the operation pilot pressure value;
and calculating the total amount of the hydraulic oil according to the hydraulic oil displacement output value and the hydraulic oil regeneration flow.
3. The energy-saving control method according to claim 2, wherein the step of calculating the hydraulic oil displacement output value in the front pump from the front pump pressure value and the boom large chamber pressure value includes:
calculating a pressure difference value between the pressure value of the movable arm large cavity and the pressure value of the front pump;
determining the displacement output value based on the pressure differential.
4. The energy saving control method according to claim 2, wherein the step of determining the hydraulic oil regeneration flow rate of the boom according to the boom pilot pressure value and the work pilot pressure value includes:
determining a regeneration valve current of the boom according to the boom pilot pressure value and the operation pilot pressure value;
and determining the regeneration flow of the hydraulic oil according to the regeneration valve current.
5. The energy-saving control method according to claim 2, wherein the step of calculating the total amount of hydraulic oil based on the hydraulic oil displacement output value and the hydraulic oil regeneration flow rate includes:
and calculating the sum of the hydraulic oil displacement output value and the hydraulic oil regeneration flow, and taking the sum of the hydraulic oil displacement output value and the hydraulic oil regeneration flow as the total hydraulic oil amount.
6. An energy saving control apparatus for an excavator, the apparatus comprising:
an acquisition module: the system comprises a pressure sensor, a pressure sensor and a control system, wherein the pressure sensor is used for acquiring a front pump pressure value of a front pump of the excavator, a movable arm large cavity pressure value of a movable arm and a movable arm pilot pressure value of the movable arm descending;
a calculation module: the hydraulic oil total amount calculating device is used for calculating the total amount of hydraulic oil available for the excavator operation according to the front pump pressure value, the movable arm large cavity pressure value and the movable arm pilot pressure value;
a control module: and controlling the excavator to supply oil to the working part according to the total amount of the hydraulic oil.
7. The energy saving control device according to claim 6, wherein the obtaining module is further configured to: acquiring an operation pilot pressure value of the operation component;
the calculation module is further to:
calculating a hydraulic oil displacement output value in the front pump according to the front pump pressure value and the movable arm large cavity pressure value;
determining the hydraulic oil regeneration flow of the movable arm according to the movable arm pilot pressure value and the operation pilot pressure value;
and calculating the total amount of the hydraulic oil according to the hydraulic oil displacement output value and the hydraulic oil regeneration flow.
8. The energy saving control device of claim 7, wherein the computing module is further configured to:
calculating a pressure difference value between the pressure value of the movable arm large cavity and the pressure value of the front pump;
determining the displacement output value based on the pressure differential.
9. The energy saving control device of claim 7, wherein the computing module is further configured to:
determining a regeneration valve current of the boom according to the boom pilot pressure value and the operation pilot pressure value;
and determining the regeneration flow of the hydraulic oil according to the regeneration valve current.
10. An excavator comprising a controller having stored thereon an energy saving control program which, when executed by the controller, implements the method of any one of claims 1 to 5.
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| CN110984283B (en) | 2022-03-01 |
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