CN106647385A - Power balance control device, method and system, and engineering machine - Google Patents
Power balance control device, method and system, and engineering machine Download PDFInfo
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- CN106647385A CN106647385A CN201611107845.6A CN201611107845A CN106647385A CN 106647385 A CN106647385 A CN 106647385A CN 201611107845 A CN201611107845 A CN 201611107845A CN 106647385 A CN106647385 A CN 106647385A
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- power
- performance element
- performance
- output
- power output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
Abstract
The invention discloses a power balance control device, method and system, and an engineering machine. The control device comprises a receiving device used for receiving the output power of a plurality of execution units which are supplied with power by a power source; and a control unit used for comparing the output power of the plurality of execution units with the set power of the plurality of execution units. Under the condition that the output power of one execution unit in the plurality of execution units is larger than the corresponding set power, the parameter of the execution unit adjusted; otherwise, the sum of the output power of the plurality of execution units is calculated, and the sum of the output power is compared with the total power set value; under the condition that the sum of the output power is larger than the total power set value, parameters of some execution units in the plurality of execution units are adjusted. According to the invention, the case that power consumption of one execution unit is too large or the total power consumption of the plurality of execution units is too large, and the power source suddenly slows down or stops can be avoided.
Description
Technical field
The present invention relates to engineering machinery field, in particular it relates to a kind of power-balance control device, power-balance controlling party
Method, the powered balance control system comprising the power-balance control device and the engineering comprising the powered balance control system
Machinery.
Background technology
The working condition of engineering machinery is severe, complicated, is usually constructed with multiple performance elements and consumes from power source simultaneously
Power/torque/power.When the power/torque that some performance element is consumed/power rises, multiple performance elements may be caused
General power/torque/force close to or over power source output limit, now most probably cause power source fall speed or stop work
Make.
As shown in figure 1, power source can provide power for performance element 1-n, wherein n is the integer more than 1.In prior art
Power allocation strategy in, common are both of which, the first pattern considers total fan-out capability of power source, by 2 or with
On performance element by design formula work, with the situation for avoiding aggregate demand from always exporting near or above power source, this mould
Formula can avoid the not enough problem of total output, but while also bring the decline of performance element controllability.Second pattern be
The power demand of each performance element is instructed from the people for performing the action, and the power demand of each performance element is independent complete
Into, in this case the controllability of performance element is greatly improved, but while is also caused multiple while the execution list of work
First aggregate demand may be close to or more than total output, in turn result in power source work abnormal.
The content of the invention
It is an object of the invention to provide a kind of power-balance control device, method for controlling power balance, comprising the power
The powered balance control system and the engineering machinery comprising the powered balance control system of balance control device, it can avoid certain
The power of one performance element consumption is excessive or general power of multiple performance element consumption is excessive and causes power source to fall speed suddenly
Or shut down.
To achieve these goals, one embodiment of the invention provides a kind of power-balance control device, the control device bag
Contain:Reception device, for receiving the respective power output of multiple performance elements, the plurality of performance element provides energy by a power source
Amount;Control device, for performing following operation:Respectively by the respective power output of the plurality of performance element and the plurality of execution
The respective setting power of unit is compared;There is power output in the plurality of performance element more than corresponding setting power
Performance element in the case of, the parameter of the performance element is adjusted, so that the power output of the performance element is less than the execution
The setting power of unit;The respective power output of all performance elements is respectively less than corresponding setting in the plurality of performance element
In the case of power, the power output sum of the plurality of performance element is calculated, and by the power output sum and total power
Setting value is compared;And in the case where the described power output sum is more than total set value of the power, adjust described many
The parameter of part performance element in individual performance element, so that power output sum is less than total set value of the power.
Optionally, each performance element is allocated a priority;The part performance element performs list according to all
The respective priority of unit and be determined.
Optionally, the priority of the part performance element is less than other performance elements in the plurality of performance element
Priority.
Optionally, the respective setting power of the plurality of performance element and the respective rated output work(of the plurality of performance element
Rate is relevant, and total set value of the power is relevant with the rated output power of the power source.
Correspondingly, one embodiment of the invention also provides a kind of method for controlling power balance, and the control method is included:Receive many
The respective power output of individual performance element, the plurality of performance element provides energy by a power source;Respectively by the plurality of execution
The respective power output of unit is compared with the respective setting power of the plurality of performance element;In the plurality of performance element
In the case of there is performance element of the power output more than corresponding setting power, the parameter of the performance element is adjusted, so that
Setting power of the power output of the performance element less than the performance element;All performance elements in the plurality of performance element
In the case that respective power output is respectively less than corresponding setting power, calculate the plurality of performance element power output it
With, and the power output sum and total set value of the power are compared;And in the described power output sum more than total
Set value of the power in the case of, the parameter of part performance element in the plurality of performance element is adjusted, so that power output
Sum is less than total set value of the power.
Optionally, each performance element is allocated a priority;The part performance element performs list according to all
The respective priority of unit and be determined.
Optionally, the priority of the part performance element is less than other performance elements in the plurality of performance element
Priority.
Optionally, the respective setting power of the plurality of performance element and the respective rated output work(of the plurality of performance element
Rate is relevant, and total set value of the power is relevant with the rated output power of the power source.
Correspondingly, one embodiment of the invention also provides a kind of powered balance control system, and the system is included:Power source;It is many
Individual performance element, the plurality of performance element provides energy by the power source;Power detection device, for detecting the plurality of holding
The respective power output of row unit;And above-mentioned power-balance control device.
Correspondingly, one embodiment of the invention also provides a kind of engineering machinery, and the engineering machinery includes above-mentioned power-balance control
System processed.
By above-mentioned technical proposal, it can detect the power of each performance element, in the output that there is a certain performance element
In the case of setting power of the power more than the performance element, the power output of the performance element is adjusted;Hold all
In the case that the respective power output of row unit is respectively less than corresponding setting power, the respective output of all performance elements is judged
Whether power sum is more than total set value of the power, and is more than total work(in the respective power output sum of all performance elements
Parameter in the case of rate setting value, to part performance element, it is ensured that the respective power output of all performance elements is less than total
Set value of the power.The general power mistake that the present invention can avoid the power that a certain performance element is consumed excessive or multiple performance elements are consumed
Power source is caused to fall speed or shutdown suddenly greatly.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural representation of existing dynamical system;
The structural representation of the powered balance control system that Fig. 2 is provided for one embodiment of the invention;And
The flow chart of the method for controlling power balance that Fig. 3 is provided for one embodiment of the invention.
The flow chart of the method for controlling power balance that Fig. 4 is provided for another embodiment of the present invention.
Specific embodiment
The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explains the present invention, is not limited to the present invention.
Technical scheme is mainly for above-mentioned second power allocation model of the prior art.In engineering machine
Tool field, because operating mode is complicated, needs neatly to tackle different operating modes, more using power distribution mould in above-mentioned second
Formula, to improve the controllability of whole machine.Under present mode, the work combined situation of performance element 1-n is uncertain, and having can
Can there was only 1 performance element work, it is also possible to there are multiple performance elements to work;And during each performance element work, the work(of consumption
Rate is also uncertain.So, when simultaneously work multiple performance elements in the course of the work, due to the change for loading, some
The power rise of performance element, it is possible to cause the power limit of the close power source of the total power output of multiple performance elements defeated
Go out, now, due to the Protective Design of power source, it is possible to cause falling speed or quitting work for power source.
The structural representation of the powered balance control system that Fig. 2 is provided for one embodiment of the invention.As shown in Fig. 2 this
A bright embodiment provides a kind of powered balance control system, and the system is included:Power source 10;Multiple performance element 1-n, it is the plurality of
Performance element provides energy by the power source 10;Power detection device 200, it is each for detecting the plurality of performance element 1-n
From power output;And power-balance control device 100, the power-balance control device is for according to power detection dress
Put the 200 respective power outputs of the plurality of performance element 1-n for being detected to judge whether to need to multiple performance element 1-
Indivedual or some performance elements power outputs in n are adjusted, to avoid the power output of the plurality of performance element excessive
And cause power source to fall speed or quit work, or be to avoid part performance element excessive from the power of power source consumption and lead
Other performance elements are caused to be difficult to be assigned to enough power distributions and effective operation from the power source.
Specifically, the power source such as can be the hydraulic pump driven by face of fluid torque converter, and it can be all kinds of
Executing agency's (for example, slew gear common in engineering machinery, jib lubbing mechanism, walking mechanism mechanism etc.) provide pressure oil with
These executing agencies are driven so as to run well.Certainly, the present invention is not limited to this, and it can be also engine, electronic
Machine etc. other drive mechanism of power can be provided.
As shown in Fig. 2 the power-balance control device 100 can be included:Reception device 110, for receiving multiple execution
The respective power outputs of unit 1-n, the plurality of performance element 1-n provides energy by a power source 10;And control device 120,
For performing following operation:It is respectively that the respective power outputs of the plurality of performance element 1-n is each with the plurality of performance element 1-n
From setting power be compared;There is power output in the plurality of performance element 1-n more than corresponding setting power
In the case of performance element, the parameter of the performance element is adjusted, so that the power output of the performance element is less than the execution list
The setting power of unit;The respective power output of all performance elements respectively less than sets accordingly in the plurality of performance element 1-n
In the case of determining power, calculate the power output sum of the plurality of performance element 1-n, and by the power output sum with it is total
Set value of the power is compared;And in the case where the described power output sum is more than total set value of the power, adjust institute
The parameter of part performance element in multiple performance element 1-n is stated, so that power output sum is less than total set value of the power.
The respective setting power of the plurality of performance element can be with the respective rated output power of the plurality of performance element
It is relevant, its can be the respective rated output power of the plurality of performance element a ratio, for example can statistical analysis each perform list
The conventional general output power range of unit, and according to the output power range determining the respective setting work(of each performance element
Rate.For example, generally, the power output of the cloth spiral system of a paver is generally 400~500 kilowatts, now may be used
Its setting power is set as 500 kilowatts, the power output of its creeper undercarriage is generally 200-230 kilowatt, now can set
Its setting power is 230 kilowatts.It is such, can according to multiple performance elements it is each leisure its conventional operating mode under power output come
Set its setting power.
Total set value of the power is relevant with the rated output power of the power source, and it can be the volume of the power source
Determine a ratio of power output.For example, the rated output power of the power source is 500 kilowatts, then power setting that can be by
Value is set as 490 kilowatts.
Under preferable case, each performance element that can be directed in multiple performance element 1-n gives a priority, the priority
Imparting can consider the significance level of the operation performed by performance element, for example or by taking paver as an example, walking mechanism
Priority is likely to be greater than the priority of cloth spiral system, that is to say, that in the case where the output of power source is limited, Ying You
The power demand of the sufficient walking mechanism that is full, is then only cloth spiral system.In the power output of the plurality of performance element 1-n
Sum can determine part more than in the case of total set value of the power according to the respective priority of the plurality of performance element
Performance element (the performance element combination that for example, individual execution units or several performance elements are constituted), and adjust part execution
The parameter of unit, so that power output sum is less than total set value of the power.In general, the part performance element is excellent
First level will be less than the priority of other performance elements in the plurality of performance element.
Or by taking paver as an example, the priority of walking mechanism is likely to be greater than the priority of cloth spiral system.At certain
In the case of a little, when the power output of the power source of paver is insufficient for the power demand of all execution of the paver, can
Stop or reduce the power supply of power source to cloth spiral system, and meet the power need of other performance elements such as walking mechanism
Ask, and the now stopping of cloth spiral system may not have any impact in normal operation of the cloud to paver, because it is very
It was possible to before being stopped or reducing power supply have accumulated enough materials for paving in the left and right sides of paver
Machine is used within the times such as following several minutes.Of short duration stopping or reduction power supply is very favorable, and on the one hand it may be used
Ensure the power supply of other performance elements, the normal operation of paver is not on the other hand interfered with again, and then be capable of achieving stand
The flexible allocation of the output power of power source of paving machine.
In the parameter manipulation of above-mentioned adjustment performance element, involved parameter can be used for for voltage or electric current etc.
The parameter of adjustment performance element power output.For example, can by adjust be connected to performance element electro-hydraulic proportional valve electric current come
Control enters the flow of the hydraulic oil of performance element, and then realizes the output power of performance element.
The flow chart of the method for controlling power balance that Fig. 3 is provided for one embodiment of the invention.As shown in figure 3, the present invention one
Embodiment also provides a kind of method for controlling power balance, and the control method is included:Receive the respective output work of multiple performance elements
Rate, the plurality of performance element provides energy by a power source;Respectively by the respective power output of the plurality of performance element with should
The respective setting power of multiple performance elements is compared;There is power output in the plurality of performance element more than corresponding
In the case of the performance element of setting power, the parameter of the performance element is adjusted, so that the power output of the performance element is little
In the setting power of the performance element;The respective power output of all performance elements is respectively less than phase in the plurality of performance element
In the case of the setting power answered, calculate the power output sum of the plurality of performance element, and by the power output sum with
Total set value of the power is compared;And in the case where the described power output sum is more than total set value of the power, adjust
The parameter of part performance element in whole the plurality of performance element, so that power output sum is less than total set value of the power.
The flow chart of the method for controlling power balance that Fig. 4 is provided for another embodiment of the present invention.As shown in figure 4, of the invention
Another embodiment provides a kind of method for controlling power balance, its difference with the method for controlling power balance shown in Fig. 3
It is that it is additionally arranged a step (as shown in overstriking square frame in Fig. 4), and it performs list according to each in multiple performance element 1-n
The priority of unit is come it is determined that being adjusted to which performance element in the plurality of performance element 1-n.
About the detail and benefit of method for controlling power balance provided by the present invention, above-mentioned relevant power is see
Balance control device is described in this and repeats no more.
Corresponding, the present invention also provides a kind of engineering machinery, and the engineering machinery includes above-mentioned powered balance control system.
The engineering machinery for example can may relate to a power source and hold to multiple for paver, road roller, mixed territory pump truck, crane etc.
Row unit carries out the plant equipment of power supply.
Although being illustrated to the technical scheme of this case by taking the power output of power source and performance element as an example, the work(
Not object is uniquely considered in this case to rate, and it can also be replaced by moment of torsion, power etc., and other consider object, and such consideration object all should
It is considered the equivalents of above-mentioned power, all within the protection domain of this case.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, various letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy is no longer separately illustrated.
Additionally, can also be combined between a variety of embodiments of the present invention, as long as it is without prejudice to this
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of power-balance control device, it is characterised in that the control device is included:
Reception device, for receiving the respective power output of multiple performance elements, the plurality of performance element is provided by a power source
Energy;
Control device, for performing following operation:
The respective power output of the plurality of performance element is compared with the respective setting power of the plurality of performance element respectively
Compared with;
In the case of there is performance element of the power output more than corresponding setting power in the plurality of performance element, adjustment
The parameter of the performance element, so that setting power of the power output of the performance element less than the performance element;
The respective power output of all performance elements is respectively less than the situation of corresponding setting power in the plurality of performance element
Under, the power output sum of the plurality of performance element is calculated, and the power output sum and total set value of the power are carried out
Relatively;And
In the case where the described power output sum is more than total set value of the power, part in the plurality of performance element is adjusted
The parameter of performance element, so that power output sum is less than total set value of the power.
2. power-balance control device according to claim 1, it is characterised in that
Each performance element is allocated a priority;
The part performance element is determined according to the respective priority of all performance elements.
3. power-balance control device according to claim 2, it is characterised in that the priority of the part performance element
Less than the priority of other performance elements in the plurality of performance element.
4. the power-balance control device according to any one of claim 1-3 claim, it is characterised in that
The respective setting power of the plurality of performance element is relevant with the respective rated output power of the plurality of performance element, described
Total set value of the power is relevant with the rated output power of the power source.
5. a kind of method for controlling power balance, it is characterised in that the control method is included:
The respective power output of multiple performance elements is received, the plurality of performance element provides energy by a power source;
The respective power output of the plurality of performance element is compared with the respective setting power of the plurality of performance element respectively
Compared with;
In the case of there is performance element of the power output more than corresponding setting power in the plurality of performance element, adjustment
The parameter of the performance element, so that setting power of the power output of the performance element less than the performance element;
The respective power output of all performance elements is respectively less than the situation of corresponding setting power in the plurality of performance element
Under, the power output sum of the plurality of performance element is calculated, and the power output sum and total set value of the power are carried out
Relatively;And
In the case where the described power output sum is more than total set value of the power, part in the plurality of performance element is adjusted
The parameter of performance element, so that power output sum is less than total set value of the power.
6. method for controlling power balance according to claim 5, it is characterised in that
Each performance element is allocated a priority;
The part performance element is determined according to the respective priority of all performance elements.
7. method for controlling power balance according to claim 6, it is characterised in that the priority of the part performance element
Less than the priority of other performance elements in the plurality of performance element.
8. the method for controlling power balance according to any one of claim 5-7 claim, it is characterised in that
The respective setting power of the plurality of performance element is relevant with the respective rated output power of the plurality of performance element, described
Total set value of the power is relevant with the rated output power of the power source.
9. a kind of powered balance control system, it is characterised in that the system is included:
Power source;
Multiple performance elements, the plurality of performance element provides energy by the power source;
Power detection device, for detecting the respective power output of the plurality of performance element;And
Power-balance control device according to any one of claim 1-4 claim.
10. a kind of engineering machinery, it is characterised in that the engineering machinery includes power-balance according to claim 9 control
System.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112230567A (en) * | 2020-10-29 | 2021-01-15 | 江苏鼎盛重工有限公司 | Control system and control method for rubber-tyred container gantry crane |
CN117341535A (en) * | 2023-12-04 | 2024-01-05 | 四川鼎鸿智电装备科技有限公司 | Intelligent electric engineering machinery energy management method and system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10196606A (en) * | 1996-12-27 | 1998-07-31 | Shin Caterpillar Mitsubishi Ltd | Controller for hydraulic pump |
CN101109332A (en) * | 2007-09-18 | 2008-01-23 | 三一重工股份有限公司 | Power controller and method for hydraulic power system |
CN101278131A (en) * | 2005-09-30 | 2008-10-01 | 卡特彼勒公司 | Multi-pump control system and method |
CN101297083A (en) * | 2005-10-31 | 2008-10-29 | 株式会社小松制作所 | Control device of work machine |
CN101799022A (en) * | 2009-02-06 | 2010-08-11 | 徐州重型机械有限公司 | Multi-pump work control method, device and system and crane |
-
2016
- 2016-12-06 CN CN201611107845.6A patent/CN106647385B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10196606A (en) * | 1996-12-27 | 1998-07-31 | Shin Caterpillar Mitsubishi Ltd | Controller for hydraulic pump |
CN101278131A (en) * | 2005-09-30 | 2008-10-01 | 卡特彼勒公司 | Multi-pump control system and method |
CN101297083A (en) * | 2005-10-31 | 2008-10-29 | 株式会社小松制作所 | Control device of work machine |
CN101109332A (en) * | 2007-09-18 | 2008-01-23 | 三一重工股份有限公司 | Power controller and method for hydraulic power system |
CN101799022A (en) * | 2009-02-06 | 2010-08-11 | 徐州重型机械有限公司 | Multi-pump work control method, device and system and crane |
Non-Patent Citations (1)
Title |
---|
《快乐家装》编辑部: "《这种装修不超支、不被宰、不返工》", 31 July 2014, 北京联合出版公司 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112230567A (en) * | 2020-10-29 | 2021-01-15 | 江苏鼎盛重工有限公司 | Control system and control method for rubber-tyred container gantry crane |
CN117341535A (en) * | 2023-12-04 | 2024-01-05 | 四川鼎鸿智电装备科技有限公司 | Intelligent electric engineering machinery energy management method and system |
CN117341535B (en) * | 2023-12-04 | 2024-02-06 | 四川鼎鸿智电装备科技有限公司 | Intelligent electric engineering machinery energy management method and system |
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