CN110131058A - Power matching control method and device - Google Patents
Power matching control method and device Download PDFInfo
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- CN110131058A CN110131058A CN201910476982.4A CN201910476982A CN110131058A CN 110131058 A CN110131058 A CN 110131058A CN 201910476982 A CN201910476982 A CN 201910476982A CN 110131058 A CN110131058 A CN 110131058A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/04—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving pumps
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Abstract
The present invention provides a kind of power matching control method and device, method includes: to obtain the real-time pressure value of the hydraulic pump of mechanical equipment, pressure value is input to differential control method and obtains pump the first current value of solenoid valve, the real-time revolving speed of engine in mechanical equipment is obtained again, real-time revolving speed is input to pid control algorithm and obtains pump the second current value of solenoid valve, pump the first current value of solenoid valve and pump the second current value of solenoid valve are weighted summation again, to obtain pump solenoid valve target current value, the pumpage of hydraulic pump is controlled according to obtained pump solenoid valve target current value, and then control the power of hydraulic pump.The device passes through the pumpage of real-time pressure value and real-time revolving speed coordinated control hydraulic pump, when pressure value changes or when revolving speed falls speed and is more than setting value, then the pumpage of hydraulic pump is adjusted, to control the power of hydraulic pump, realizes the power match of engine and hydraulic pump.
Description
Technical field
The present invention relates to equipment control technology fields, more particularly to a kind of power matching control method and device.
Background technique
In the industry, heavy mechanical equipment is very common, and such as excavator, such heavy mechanical equipment selects liquid often
Press pump as dynamical element, the dynamical element by power drive provided by engine, dynamical element after driving from
Oil liquid is sucked in hydraulic oil container, by squeezing the oil liquid in seal chamber, generates pressure, which will take in oil mass from hydraulic pump in advance
Middle discharge.Wherein, the oil mass of discharge is as unit of pumpage, and pumpage refers to that the pump shaft of hydraulic pump turns around oil be discharged
Liquid product.
Hydraulic pump during the work time, if power is greater than maximum power provided by engine, will lead to engine
There is speed or even flame-out phenomenon.In order to avoid this kind of situation, the power for needing to control hydraulic pump, which is no more than, to be started
The maximum power of machine, such power control are properly termed as power match control.
A kind of current power matching control method is constantly to acquire the revolving speed of engine, monitoring rotation speed, which falls fast situation, is
No is more than that the maximum of setting falls fast value, if it exceeds then the power of hydraulic pump is adjusted.But this kind of control mode is at least
It has the disadvantage in that revolving speed collection process has delay, so that power match control process is not prompt enough, and then influences machinery and set
Standby normal operation.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of power matching control method, to realize to hydraulic pump power
Real-time control, in addition, the present invention also provides a kind of power match control devices to realize the application of the above method in practice
With realization.
To achieve the above object, the embodiment of the present invention provides the following technical solutions:
In a first aspect, the present invention provides a kind of power matching control methods, comprising:
Obtain the real-time pressure value of the hydraulic pump of mechanical equipment；
The real-time pressure value is input in Pressure differential control algolithm, pump the first current value of solenoid valve is obtained；
Obtain the real-time revolving speed of the engine of the mechanical equipment；
The real-time revolving speed is input in pid control algorithm, pump the second current value of solenoid valve is obtained；
Summation is weighted to the first current value of the pump solenoid valve and the second current value of the pump solenoid valve, obtains pump electricity
Magnet valve target current value；
According to the pump solenoid valve target current value, the pumpage of the hydraulic pump is controlled, to control the liquid
The power of press pump.
Second aspect, the present invention provides a kind of power match control devices, comprising:
Pressure value obtains module, the real-time pressure value of the hydraulic pump for obtaining mechanical equipment；
It pumps the first current value of solenoid valve and obtains module, for the real-time pressure value to be input to Pressure differential control algolithm
In, obtain pump the first current value of solenoid valve；
Revolving speed obtains module, the real-time revolving speed of the engine for obtaining the mechanical equipment；
It pumps the second current value of solenoid valve and obtains module, for the real-time revolving speed to be input in pid control algorithm, obtain
Pump the second current value of solenoid valve；
It pumps solenoid valve target current value and obtains module, for the first current value of the pump solenoid valve and the pump solenoid valve
Second current value is weighted summation, obtains pump solenoid valve target current value；
Pumpage control module, for according to the pump solenoid valve target current value, to the pumpage of the hydraulic pump into
Row control, to control the power of the hydraulic pump.
As shown from the above technical solution, the present invention provides a kind of power matching control method, this method passes through acquisition machine
The real-time pressure value of the hydraulic pump of tool equipment, is input to differential control method for pressure value, to obtain pump the first electric current of solenoid valve
Value, then the real-time revolving speed of engine in mechanical equipment is obtained, real-time revolving speed is input to pid control algorithm, to obtain pump electromagnetism
The second current value of valve, then pump the first current value of solenoid valve and pump the second current value of solenoid valve are weighted summation, to be pumped
Solenoid valve target current value, the pumpage of hydraulic pump is controlled according to obtained pump solenoid valve target current value, and then is controlled
The power of hydraulic pump.This method passes through the pumpage of real-time pressure value and real-time revolving speed coordinated control hydraulic pump, when pressure value is sent out
When changing or when revolving speed falls speed and is more than setting value, the pumpage of hydraulic pump is adjusted, to control hydraulic pump
Power realizes the power match of engine and hydraulic pump.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 shows the flow chart of power matching control method provided by the invention；
Fig. 2 shows the schematic diagrames provided by the invention for obtaining pump the first current value of solenoid valve；
Fig. 3 shows the schematic diagram provided by the invention for obtaining pump the second current value of solenoid valve；
Fig. 4 shows the schematic diagram provided by the invention for obtaining pump solenoid valve target current value；
Fig. 5 shows the schematic diagram of control pump the first current value of solenoid valve output provided by the invention；
Fig. 6 shows the structural schematic diagram of power match control device provided by the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In this application, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion,
So that the process, method, article or equipment for including a series of elements not only includes those elements, but also including not having
The other element being expressly recited, or further include for elements inherent to such a process, method, article, or device.Do not having
There is the element limited in the case where more limiting by sentence "including a ...", it is not excluded that in the mistake including the element
There is also other identical elements in journey, method, article or equipment.
In mechanical equipment operational process, needs to provide power by hydraulic pump and supported as running, and hydraulic pump is
By engine-driven in mechanical equipment, when power needed for the power provided by the engine is unable to satisfy hydraulic pump, hair
Motivation will appear failure, such as occurs speed and flame-out situation even occurs.
In the prior art, there are a kind of solutions, in CAN (Controller Area Network, controller local
Network) revolving speed that engine is acquired in bus then starts PID controller when engine, which falls speed, is more than some default value
Adjust the power of hydraulic pump.But mechanical equipment is at runtime, the rotation speed change of engine is very fast, and the revolving speed in CAN bus
Update is slower, can not adjust the power of hydraulic pump in time according to the revolving speed acquired in CAN bus, so as to cause power match mistake
It loses.
For this purpose, the embodiment of the invention provides a kind of power matching control methods, referring to Fig. 1 to realize to mechanical equipment
Hydraulic pump power real-time control, specifically include step S101-S106.
S101: the real-time pressure value of the hydraulic pump of mechanical equipment is obtained.
Specifically, when mechanical equipment in the process of running, if excavator is when carrying out excavation movement, the load of excavator is
State in variation, and load directly proportional to the pressure value of hydraulic pump in excavator.Wherein, the work shape of mechanical equipment is monitored
State only need to monitor the variation loaded in mechanical equipment, and acquire corresponding real-time pressure value.
It should be noted that acquisition pressure value can be by pressure sensor, and then the present invention can obtain pressure sensing
The real-time pressure value of the hydraulic pump of device acquisition.Specifically, pressure sensor is set to hydraulic pump high-pressure mouth side, hydraulic pump is realized
The real-time acquisition of pressure value.Relative to CAN bus signal, pressure sensor can reflect hydraulic pump there is no delay in real time
Pressure value.
S102: real-time pressure value is input in Pressure differential control algolithm, obtains pump the first current value of solenoid valve.
Specifically, by before real-time pressure value input pressure differential control method, real-time pressure value first can be passed through into filter
Wave device is filtered, and to obtain the reasonable real-time pressure value of numerical value, filter process can be the filtering of any implementation, this
Place no longer illustrates.
Filtered real-time pressure value is input in Pressure differential control algolithm, by the Pressure differential control algolithm to mistake
Pressure value after filter is handled.The treatment process of Pressure differential control algolithm referring to fig. 2, are as follows: by the real-time pressure at current time
It is poor that the pressure value of force value and previous moment is made, and obtains the variable quantity of pressure value；Work at present gear is obtained, according to work at present shelves
Position determines differential coefficient corresponding with the operation range, by the variable quantity of pressure multiplied by the differential coefficient, to obtain result of product,
The result of product is the first current value of pump solenoid valve corresponding with the pressure value.
S103: the real-time revolving speed of the engine of mechanical equipment is obtained.
Specifically, the real-time revolving speed for obtaining engine may exist two kinds of implementations:
First, obtaining engine from CAN (Controller Area Network, controller local area network) bus
Real-time revolving speed.
There are multiple modules in mechanical equipment, and these modules are all controlled by electronic control unit, control process
It is that the data either parameter that modules report is read from CAN, electronic control unit is either joined according to the data of reading
Number executes corresponding module and carries out relevant operation.Therefore, the real-time revolving speed of engine can be obtained directly from CAN bus.
Second, obtaining the real-time revolving speed of the engine of speed probe acquisition.Speed probe is set in engine,
Revolving speed in acquisition engine in real time.For this method for one, advantage is more prominent, specifically: the number in CAN bus
According to being not have certain interval of time to report once, lack timeliness, speed probe is the revolving speed of real-time acquisition engine, timeliness
It is high.
For the acquisition method of one, secondly it is middle using speed probe acquisition revolving speed method timeliness compared with
It is high.
S104: real-time revolving speed is input in pid control algorithm, obtains pump the second current value of solenoid valve.
Specifically, real-time revolving speed is inputted into PID (Proportion Integration Differentiation, ratio
Integral differential) in control algolithm, wherein pid control algorithm must be run in closed-loop control system, input real-time revolving speed
Meanwhile also inputting to setting speed in pid control algorithm, the principle of algorithm is that real-time revolving speed and setting speed are made ratio
Compared with by comparison result generation pump the second current value of solenoid valve.Wherein, setting speed is according to hand throttle signal acquisition.
Specifically, pid control algorithm as shown in figure 3, by actual engine speed (the real-time revolving speed i.e. in this step) with
The setting speed of engine is subtracted each other, and rotating speed difference is obtained, and rotating speed difference is then separately input into P controller, I controller
And in D controller.After P controller carries out scale operation to rotating speed difference using gain parameter, current value is obtained；I controller
After carrying out integral operation to rotating speed difference using gain parameter, current value is obtained；D controller is normal using gain parameter and time
After several pairs of rotating speed differences are differentiated, current value is obtained.After the current value of three controllers is added, total electricity is obtained
Flow valuve.After total current value is compared with 0, the larger value is taken to export, the value of output is known as the second current value (i.e. in this step
Pump the second current value of solenoid valve)
It should be noted that pump the second current value of solenoid valve is calculated using real-time revolving speed, and then use the pump electromagnetism
Pumpage is adjusted in the second current value of valve, in order to prevent engine from falling speed excessive.
S105: summation is weighted to pump the first current value of solenoid valve and pump the second current value of solenoid valve, obtains pump electromagnetism
Valve target current value.
Specifically, pump solenoid valve target current value is added by the first current value of pump solenoid valve and pump the second current value of solenoid valve
Power summation obtains.Wherein, pump the first current value of solenoid valve is that the pressure value of monitoring mechanical equipment obtains.Pump solenoid valve first
Current value is related with pressure change rate, and pressure change is faster, then the value is higher.Pump the first current value of solenoid valve is control pump electromagnetism
One index of valve target current value；Pump the second current value of solenoid valve is that the revolving speed of monitoring engine obtains.With falling fast value
Variation, pump the second current value of solenoid valve also follow variation.When falling fast smaller, the second current value does not follow rotation speed change.Pump electricity
The second current value of magnet valve is another index of control pump solenoid valve target current value.
Accordingly, there exist two independent controlling mechanisms: first is that falling speed within setting value, pump electromagnetism is controlled by pressure value
The size of valve target current value, in such cases, when the load of mechanical equipment changes, the pressure value of hydraulic pump also can be with
Variation, so as to cause pump the first current value of solenoid valve change, and then influence pump solenoid valve target current value variation, two
It is that pressure value is constant, the size of pump solenoid valve target current value is controlled by revolving speed, in such cases, when the revolving speed of engine falls
When speed is more than some setting value, pump the second current value of solenoid valve can change, and then influence pump solenoid valve target current value
Variation, third is that revolving speed and pressure value all change, then it is generated to pump the second electricity of the first current value of solenoid valve and pump solenoid valve
Flow valuve controls the size of pump solenoid valve target current value together.
S106: according to pump solenoid valve target current value, the pumpage of hydraulic pump is controlled, to control the function of hydraulic pump
Rate.
Specifically, the pumpage of hydraulic pump, pump solenoid valve target electricity are adjusted according to pump solenoid valve target current value size
The corresponding relationship of the pumpage of flow valuve and hydraulic pump is, in a numerical intervals, pump solenoid valve target current value is bigger, pump row
It measures smaller, pumpage is adjusted according to this relationship.Solenoid valve target current value is such as pumped greater than a certain setting value a, is less than other one
When a setting value b, pump solenoid valve target current value is bigger, then pumpage is smaller.When pumping solenoid valve target current value less than a,
Or when the pumpage of hydraulic pump is greater than b, pumpage is constant.In addition, pump solenoid valve target current value can be with pumpage
Occurrence has corresponding relationship.
It should be noted that the pumpage and pressure product of hydraulic pump and the power of hydraulic pump are proportional, therefore, adjust
The pumpage of section hydraulic pump can adjust the power of hydraulic pump indirectly, and the power provided by the engine is unable to satisfy hydraulic pump institute
When needing power, the pumpage of hydraulic pump is reduced according to pump solenoid valve target current in such cases, to reduce hydraulic pump
Required power.
As shown from the above technical solution, the present invention provides a kind of power matching control method, this method passes through acquisition machine
Pressure value is input to differential control method and obtains pump the first current value of solenoid valve by the real-time pressure value of the hydraulic pump of tool equipment,
Real-time revolving speed is input to pid control algorithm and obtains pump solenoid valve second by the real-time revolving speed for obtaining engine in mechanical equipment again
Current value, then pump the first current value of solenoid valve and pump the second current value of solenoid valve are weighted summation, to obtain pump solenoid valve
Target current value, the pumpage of hydraulic pump is controlled according to obtained pump solenoid valve target current value, and then controls hydraulic pump
Power.This method passes through the pumpage of real-time pressure value and real-time revolving speed coordinated control hydraulic pump, when pressure value changes
When or when revolving speed falls speed and is more than setting value, then the pumpage of hydraulic pump is adjusted, to control the power of hydraulic pump,
Realize the power match of engine and hydraulic pump.
Existing control program reads engine speed from CAN bus, and arranges according only to engine speed conditions pump
Amount is controlled.There is delay due to reading data in CAN bus, it is just not prompt enough to the power control of hydraulic pump.In addition,
During the work time, load variation is very fast for mechanical equipment, and the pressure rise of hydraulic pump is also very fast, if engine speed updates
It crosses slowly, i.e. the input signal delay of controller, may cause the adjusting delay of hydraulic pump, or even cause to stop working.In order to avoid CAN
Bus reads the problem of data delay, can additionally increase speed probe, obtain real-time tach signal, but this will increase control again
This is made.In addition, existing control program only falls speed more than after setting range value in engine, controller just carries out intervention tune
Section cannot effectively eliminate the mechanical equipment due to caused by the fluctuation of load in engine power ranges and act jitter problem.
However, power match control program provided by the invention, not only acquires the revolving speed of engine, but also can be with collection liquid
The real-time pressure of press pump controls the power of hydraulic pump according to the comprehensive condition of the two values.As long as having in two parameters
One Parameters variation situation is eligible, and the power that can adjust hydraulic pump is adjusted, so as to a certain extent
The delayed impact only relied in the scheme that a rotary speed parameter is adjusted is eliminated, and then improves the timely of power match control
Property.When being adjusted by pressure, after pressure increases, the electric current that derivative controller can increase rapidly pump (reduces the row of pump
Amount), inhibit pressure to continue the trend increased；After pressure reduction, the electric current that derivative controller can reduce pump (increases the row of pump
Amount), to realize the adjusting of pumpage.Also, this programme can monitor the variation of pressure, and adjust liquid according to the variation of pressure
The pumpage of press pump, so as to effectively inhibit because mechanical equipment caused by load frequent changes acts jitter problem.
In one example, step S105: pump the first current value of solenoid valve and pump the second current value of solenoid valve are added
Power summation, specifically comprises the following steps:
It determines the operation range and operating mode of mechanical equipment, and determines weight corresponding with operation range and operating mode
Coefficient (weight coefficient is referred to as MAP coefficient)；MAP coefficient is determined as to pump the weighted value of the second current value of solenoid valve, with
And the difference of numerical value 1 and MAP coefficient is determined as to pump the weighted value of the first current value of solenoid valve；According to two weighted values, to pump electricity
The first current value of magnet valve and pump the second current value of solenoid valve are weighted summation.
Specifically, it is determined that mechanical equipment work at present gear and operating mode, by taking excavator as an example, general excavator is divided into
10 gears can determine the work at present gear of equipment.In addition, operating mode has quick mode, economy by taking excavator as an example
Mode etc., driver can choose some operating mode as current operation mode by instrument or potentiometer.In addition, machinery is set
Standby interior preparatory calibration has weighting coefficient MAP curve, which includes tri- axis of X, Y and Z, and X-axis and Y-axis respectively indicate operation range
And operating mode, different operation ranges and operating mode correspond to different MAP, therefore according to current operation mode and currently
Operation range determines the value of Z axis, the value, that is, MAP coefficient in weighting coefficient MAP curve.
Corresponding MAP coefficient is determined according to work at present gear and operating mode.MAP coefficient is one greater than 0,
How much numerical value less than 1 indicates accounting.Determine the weighted value of two current values of solenoid valve respectively according to MAP coefficient.Specifically such as
Under:
Referring to Fig. 3, MAP coefficient can be determined as pumping the weighted value of the second current value of solenoid valve, that is, indicate pump solenoid valve
Accounting of second current value in pump solenoid valve target current value is MAP coefficient, in addition, by the poor conduct of numerical value 1 and MAP coefficient
The weighted value of the first current value of solenoid valve is pumped, that is, indicates pump the first current value of solenoid valve accounting in pump solenoid valve target current value
Than the difference for numerical value 1 and MAP coefficient.
It is weighted summation according to the two weighted values, it is specific as follows referring to Fig. 3: the pump that above-mentioned steps are calculated
The second current value of solenoid valve is multiplied by MAP coefficient, to obtain the first result of product；The pump solenoid valve that above-mentioned steps are calculated
One current value multiplied by numerical value 1 and MAP coefficient difference, to obtain the second result of product, by the first result of product and the second product knot
Fruit is added, to obtain pump solenoid valve target current value.
Alternatively, using MAP coefficient as the weighted value of pump the first current value of solenoid valve pump solenoid valve first can also be indicated
Accounting of the current value in pump solenoid valve target current value is MAP coefficient, using numerical value 1-MAP coefficient as the second electricity of pump solenoid valve
The weighted value of flow valuve indicates that accounting of pump the second current value of solenoid valve in pump solenoid valve target current value is numerical value 1 and MAP
The difference of coefficient.
It is weighted summation according to the two weighted values, it is specific as follows: the pump solenoid valve that above-mentioned steps are calculated
One current value is multiplied by numerical value MAP coefficient, to obtain the first result of product；The second electricity of pump solenoid valve that above-mentioned steps are calculated
Flow valuve multiplied by numerical value 1-MAP coefficient difference, to obtain the second result of product, by the first result of product and the second result of product phase
Add, to obtain pump solenoid valve target current value.
In one example, pressure differintiator is adjusted always in order to prevent, and enabled condition adjusts pressure differintiator
The first current value of pump solenoid valve being calculated.
Therefore, above-mentioned power matching control method can also include: the judgement after obtaining pump the first current value of solenoid valve
Whether engine load rate is greater than rate of load condensate preset value；If it is not, then setting 0 for pump the first current value of solenoid valve.
Specifically, referring to fig. 4, real-time pressure value is input in Pressure differential control algolithm, obtains pump solenoid valve first
Current value after obtaining pump the first current value of solenoid valve, carries out output control to pump the first current value of solenoid valve.Control process tool
Body are as follows: pump the first current value of solenoid valve is input in control module, which receives rate of load condensate preset value, and obtains in real time
Engine load rate is taken, the control condition of control module is to judge whether engine load rate is greater than rate of load condensate preset value, if obtaining
Engine load rate is taken to be greater than or equal to rate of load condensate preset value, then it represents that engine is in preset working condition and such as excavates shape
State, by pump the first current value of solenoid valve output；If obtaining engine load rate is less than rate of load condensate preset value, then it represents that engine is simultaneously
It is non-to be in preset working condition, 0 is set by pump the first current value of solenoid valve at this time, and export.Setting 0 then indicates, such
In the case of do not need the pumpage that hydraulic pump is adjusted by pressure value.It is understood that going out, judge whether engine is in
Preset working condition is obtained by the size relation between rate of load condensate preset value and engine load rate.Therefore, in reality
In the application of border, it is desirable to control which kind of working condition of engine, then preset corresponding negative under this kind of working condition
Lotus rate preset value.
It should be noted that above-mentioned control module can be integrated with derivative controller, independent module can also be,
It no longer illustrates herein.
Referring to Fig. 6, the embodiment of the invention also provides a kind of power match control devices, specifically include: pressure value obtains
Module 601, pump the first current value of solenoid valve obtain module 602, revolving speed obtains module 603, pump the second current value of solenoid valve obtains
Module 604, pump solenoid valve target current value obtain module 605 and pumpage control module 606, in which:
Pressure value obtains module 601, the real-time pressure value of the hydraulic pump for obtaining mechanical equipment.
It pumps the first current value of solenoid valve and obtains module 602, for real-time pressure value to be input to Pressure differential control algolithm
In, obtain pump the first current value of solenoid valve.
Revolving speed obtains module 603, the real-time revolving speed of the engine for obtaining mechanical equipment.
It pumps the second current value of solenoid valve and obtains module 604, for real-time revolving speed to be input in pid control algorithm, obtain
Pump the second current value of solenoid valve.
It pumps solenoid valve target current value and obtains module 605, for pump the first current value of solenoid valve and pump solenoid valve second
Current value is weighted summation, obtains pump solenoid valve target current value.
Pumpage control module 606, for being controlled to the pumpage of hydraulic pump according to pump solenoid valve target current value
System, to control the power of hydraulic pump.
As shown from the above technical solution, the present invention provides a kind of power match control device, which passes through acquisition machine
Pressure value is input to differential control method and obtains pump the first current value of solenoid valve by the real-time pressure value of the hydraulic pump of tool equipment,
Real-time revolving speed is input to pid control algorithm and obtains pump solenoid valve second by the real-time revolving speed for obtaining engine in mechanical equipment again
Current value, then pump the first current value of solenoid valve and pump the second current value of solenoid valve are weighted summation, to obtain pump solenoid valve
Target current value, the pumpage of hydraulic pump is controlled according to obtained pump solenoid valve target current value, and then controls hydraulic pump
Power.The device passes through the pumpage of real-time pressure value and real-time revolving speed coordinated control hydraulic pump, when pressure value changes
When or when revolving speed falls speed and is more than setting value, then the pumpage of hydraulic pump is adjusted, to control the power of hydraulic pump,
Realize the power match of engine and hydraulic pump.
In one example, the pressure value acquisition module, the real-time pressure value of the hydraulic pump for obtaining mechanical equipment,
It include: that pressure value obtains module, the real-time pressure value of the hydraulic pump specifically for obtaining pressure sensor acquisition.
In one example, the revolving speed acquisition module, the real-time revolving speed of the engine for obtaining the mechanical equipment,
It include: that revolving speed obtains module, the real-time revolving speed of the engine specifically for obtaining speed probe acquisition；Alternatively, from controller
The real-time revolving speed of engine is obtained on Area Network bus.
In one example, the pump solenoid valve target current value obtains module, for first electricity of pump solenoid valve
Flow valuve and the second current value of the pump solenoid valve are weighted summation, obtain pump solenoid valve target current value, comprising: pump solenoid valve
Target current value obtains module, specifically for the operation range and operating mode of the determination mechanical equipment, and it is determining with it is described
Operation range and the corresponding MAP coefficient of the operating mode；The MAP coefficient is determined as the second current value of the pump solenoid valve
Weighted value, and the difference of numerical value 1 and the MAP coefficient is determined as to the weighted value of pump first current value of solenoid valve；With
And according to two weighted values, the first current value of the pump solenoid valve and the second current value of the pump solenoid valve is weighted and is asked
With.
In one example, power match control device further include: rate of load condensate judgment module.Rate of load condensate judgment module is used
In after obtaining pump the first current value of solenoid valve, judge whether engine load rate is greater than rate of load condensate preset value；And if it is not,
Then 0 is set by the first current value of the pump solenoid valve.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system or
For system embodiment, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to method
The part of embodiment illustrates.System and system embodiment described above is only schematical, wherein the conduct
The unit of separate part description may or may not be physically separated, component shown as a unit can be or
Person may not be physical unit, it can and it is in one place, or may be distributed over multiple network units.It can root
According to actual need that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Ordinary skill
Personnel can understand and implement without creative efforts.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of power matching control method characterized by comprising
Obtain the real-time pressure value of the hydraulic pump of mechanical equipment；
The real-time pressure value is input in Pressure differential control algolithm, pump the first current value of solenoid valve is obtained；
Obtain the real-time revolving speed of the engine of the mechanical equipment；
The real-time revolving speed is input in pid control algorithm, pump the second current value of solenoid valve is obtained；
Summation is weighted to the first current value of the pump solenoid valve and the second current value of the pump solenoid valve, obtains pump solenoid valve
Target current value；
According to the pump solenoid valve target current value, the pumpage of the hydraulic pump is controlled, to control the hydraulic pump
Power.
2. power matching control method according to claim 1, which is characterized in that the real-time pressure for obtaining hydraulic pump
Value, comprising:
Obtain the real-time pressure value of the hydraulic pump of pressure sensor acquisition.
3. power matching control method according to claim 1, which is characterized in that described to obtain turning in real time for engine
Speed, comprising:
Obtain the real-time revolving speed of the engine of speed probe acquisition；Alternatively,
The real-time revolving speed of engine is obtained from CAN bus.
4. power matching control method according to claim 1, which is characterized in that the first current value of the pump solenoid valve
And the second current value of the pump solenoid valve is weighted summation, comprising:
Determine the operation range and operating mode of the mechanical equipment, and determining and the operation range and the operating mode pair
The weight coefficient answered；
The weight coefficient is determined as to the weighted value of pump first current value of solenoid valve, and by numerical value 1 and the weight
The difference of coefficient is determined as the weighted value of pump second current value of solenoid valve；
According to two weighted values, the first current value of the pump solenoid valve and the second current value of the pump solenoid valve are weighted and are asked
With.
5. power matching control method according to claim 1, which is characterized in that pump the first current value of solenoid valve obtaining
Later, further includes:
Judge whether engine load rate is greater than rate of load condensate preset value；
If it is not, then setting 0 for the first current value of the pump solenoid valve.
6. a kind of power match control device characterized by comprising
Pressure value obtains module, the real-time pressure value of the hydraulic pump for obtaining mechanical equipment；
It pumps the first current value of solenoid valve and obtains module, for the real-time pressure value to be input in Pressure differential control algolithm,
Obtain pump the first current value of solenoid valve；
Revolving speed obtains module, the real-time revolving speed of the engine for obtaining the mechanical equipment；
It pumps the second current value of solenoid valve and obtains module, for the real-time revolving speed to be input in pid control algorithm, obtain pump electricity
The second current value of magnet valve；
It pumps solenoid valve target current value and obtains module, for the first current value of the pump solenoid valve and the pump solenoid valve second
Current value is weighted summation, obtains pump solenoid valve target current value；
Pumpage control module, for being controlled to the pumpage of the hydraulic pump according to the pump solenoid valve target current value
System, to control the power of the hydraulic pump.
7. power match control device according to claim 6, which is characterized in that the pressure value obtains module, is used for
Obtain the real-time pressure value of the hydraulic pump of mechanical equipment, comprising:
Pressure value obtains module, the real-time pressure value of the hydraulic pump specifically for obtaining pressure sensor acquisition.
8. power match control device according to claim 6, which is characterized in that the revolving speed obtains module, for obtaining
Obtain the real-time revolving speed of the engine of the mechanical equipment, comprising:
Revolving speed obtains module, the real-time revolving speed of the engine specifically for obtaining speed probe acquisition；Alternatively, from control general ability
The real-time revolving speed of engine is obtained on the network-bus of domain.
9. power match control device according to claim 6, which is characterized in that the pump solenoid valve target current value obtains
Modulus block is obtained for being weighted summation to the first current value of the pump solenoid valve and the second current value of the pump solenoid valve
Pump solenoid valve target current value, comprising:
It pumps solenoid valve target current value and obtains module, specifically for the operation range and operating mode of the determination mechanical equipment,
And determine MAP coefficient corresponding with the operation range and the operating mode；The MAP coefficient is determined as the pump electromagnetism
The weighted value of the second current value of valve, and the difference of numerical value 1 and the MAP coefficient is determined as the first current value of the pump solenoid valve
Weighted value；And according to two weighted values, to the second current value of the first current value of the pump solenoid valve and the pump solenoid valve
It is weighted summation.
10. power match control device according to claim 6, which is characterized in that further include: rate of load condensate judgment module；
Rate of load condensate judgment module, for judging whether engine load rate is greater than after obtaining pump the first current value of solenoid valve
Rate of load condensate preset value；And if it is not, 0 then is set by the first current value of the pump solenoid valve.
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| CN113898489A (en) * | 2021-10-27 | 2022-01-07 | 北谷电子有限公司 | Handle proportion and power matching composite control based method and platform |
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| CN113898489A (en) * | 2021-10-27 | 2022-01-07 | 北谷电子有限公司 | Handle proportion and power matching composite control based method and platform |
| CN114045897A (en) * | 2021-11-17 | 2022-02-15 | 江苏徐工工程机械研究院有限公司 | Load sudden-change speed-dropping control method and system for positive flow system and excavator |
| CN115380700A (en) * | 2022-10-28 | 2022-11-25 | 潍柴雷沃智慧农业科技股份有限公司 | Combine harvester engine power self-adaptive control system and method |
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