CN109784543A - Balance scheduled production method based on weighted round robin scheduling - Google Patents
Balance scheduled production method based on weighted round robin scheduling Download PDFInfo
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Abstract
The present invention relates to enterprises to produce scheduled production field, discloses a kind of balance scheduled production method based on weighted round robin scheduling, carries out a scheduled production to component, production line using optimal algorithm, calculates weight by the result of a scheduled production and carry out secondary scheduled production.The present invention is based on the balance scheduled production methods of weighted round robin scheduling, and production line is distributed equally, and achieve the purpose that production line daily output within the production cycle is balanced, realize the balancing the load of production line, improve utilization rate of equipment and installations, to improve production efficiency.
Description
Technical field
The present invention relates to enterprises to produce scheduled production field, and in particular to a kind of balance scheduled production side based on weighted round robin scheduling
Method.
Background technique
Production scheduling is commonly referred to as sequencing problem either resource allocation problem, it is production management and Combinatorial Optimization neck
The important research content in domain, arranged rational produce and dispatch to raising production efficiency, reduction production cost, improve production quality
Play very important effect.
Present enterprise is mostly polymorphic type multiple production line production scheduling, and production and logistics links are frequently with Toyota's production mould
Formula (TPS), core are JIT production management mode (JIT), be exactly the production plan of a period of time first reasonably
It is assigned to production line, priority is formulated by levelized, then is intended to the day ability according to production line to decompose every day,
According to the daily progress plan of each production line, day neck feeding plan (i.e. distribution plan) is generated.In the product final assemble of this kind of enterprises
Workshop, has a plurality of assemble production line, many product mixed productions, and every kind of product has various configurations model.Main production plan
Administrative department works out the main production plan of each production line monthly, each production line is fully according to master according to the prediction plan of the product moon
The production of production plan tissue.
In the prior art, production planning management part uses always manual mode to work out main production plan, is completely dependent on
Personal experience and work qualification, each authorized strength work amount is very big, need to usually spend one day time, and cannot be complete
Guarantee plan reasonability, generally require repeatedly to adjust repeatedly, can just obtain one more be satisfied with as a result, in addition, planning
In implementation procedure, frequent change of plan even more significantly increases planned workload and work difficulty.Although being counted in main production
Management aspect is drawn, some auxiliary tool softwares (as by capacity production scheduling) is had existed, but does not solve fundamentally to compile by hand always
Equilibrium in main production plan processed is gone into operation this problem.And after multiple scheduling, there may be serious for the load of production line
Imbalance, some production specific electric loads are especially big, and idle condition possibly even occur in some production lines, lead to the load of production line not
Balance, keeps utilization rate of equipment and installations and production efficiency low.
Summary of the invention
The purpose of the present invention is to the deficiencies of above-mentioned technology, provide a kind of balance scheduled production based on weighted round robin scheduling
Production line is distributed equally in method, achievees the purpose that production line daily output within the production cycle is balanced, realizes production line
Balancing the load, utilization rate of equipment and installations is improved, to improve production efficiency.
To achieve the above object, the balance scheduled production method based on weighted round robin scheduling designed by the present invention, including it is as follows
Step:
1, a kind of balance scheduled production method based on weighted round robin scheduling, it is characterised in that: described method includes following steps:
A the set LineType (L of production line type) is obtained1,L2,L3…Lj…Lm) and need the component class that produces and processes
Set Component (the C of type1,C2,C3…Ci…Cn), j is the label of the production line type, and i is the mark of the element type
Number, each element type has the priority P of corresponding production line typeji, the production line type produces a kind of component class
The average time-consuming of type is hourji, completing the number of days that production task plan needs is duty cycle D；
B) according to the step A) in every kind of element type priority PjiA production scheduling is discharged from high to low；
C) to production line type L described in every kindjAssign weight Wj, initial weight Wj=0, component is then distributed into weight
WjThe production scheduling obtained in the step B) is carried out secondary production scheduling, a turnaround time by minimum production line
It is interior, type LjProduction line distribution number of components formula it is as follows:
thisRoundTaskj=Min (Wj,remainTasksj)
In formula, thisRoundTaskjFor assignable the number of components of the production line in a turnaround time, WjFor the production
The weight of line, remainTasksjThis is given birth to after the completion of turnaround time for the remaining assignable the number of components of the production line
The weight W of producing linejIt recalculates,
Wj=Pji*log2(taskNumCi+1)
Turnaround time is repeated, production line type L is obtainedjSecondary production scheduling；
D the duty cycle D) is divided according to the ratio that each type production line produces different type the number of components, is obtained
The average time weight typehours for needing to produce daily of each type production lineji,
In formula, LineDaysjiFor type LjProduction line production type CiThe number of days that component needs, LineNum 'jiFor type
LjProduction line production type CiThe quantity of component, LineAllNumjFor type LjProduction line produces the quantity of all components,
LineCountiFor production line type LjTotal quantity；
E every class production line L) is givenjAssign time started dtj, according to such production line LjProduce a kind of being averaged for element type
Time-consuming is hourji, in the step C) in obtain production line type LjSecondary production scheduling and in the step D) in take
The every class production line L obtainedjThe average time weight typehours for needing to produce dailyji, calculate production line type LjProduce structure
The time production plan of part；
F) according to the step C) secondary production scheduling and the step E) time production plan, export scheduled production knot
Fruit.
Preferably, the step E) in, production line type LjThe time production plan of component is produced according to such as minor function meter
It calculates:
Parameter: dtj, hourji, typehoursji, dayhourj
In formula, dayhourjFor production line LjThe time that the same day has produced
Function body:
State an integer day=0；
State a float temptime=0；
Constantly recycle:
If day is 0:
Temptime=hourji；
hourji=hourji-(typehoursji-dayhourj)；
If day is not equal to 0:
Temptime=hourji；
hourji=hourji-typehoursji)；
If hourjiLess than or equal to 0:
If day is equal to 0:
Temptime=temptime+dayhourj；
dayhourj=temptime；
Circulation is jumped out, dt is returnedjIn addition day days add temptime hour；
Day is primary from increasing.
Preferably, the step C) in, production line type LjIt is as follows to increase constraint formulations in turnaround time:
Wj=Wj-1
In formula, runningTasksjFor production line type LjThe task plastics being currently running, y are total production line in queue
Quantity, k are adjustment factor, 1 < < k < < 6,For the number of components being currently running, avoid giving birth to
Producing line type LjExcessive the causing to distribute within turnaround time of the task of weight is excessive.
Preferably, the step B) in, the time of a production scheduling is less than duty cycle D, otherwise cannot be balanced
Scheduled production.
Compared with prior art, the present invention the weight and production line according to production line averagely need the time produced to weigh daily
Value carries out equilibrium assignment to production line and production time, thus guarantee that production line production capacity is balanced, the production specific electric load mistake avoided
Greatly, some production lines occur idle, utilization rate of equipment and installations are improved, to improve production efficiency.
Detailed description of the invention
Fig. 1 is the flow diagram for the balance scheduled production method dispatched the present invention is based on weighted round robin；
Fig. 2 is the scheduled production result of embodiment.
Specific embodiment
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of balance scheduled production method based on weighted round robin scheduling, described method includes following steps:
A the set LineType (L of production line type) is obtained1,L2,L3…Lj…Lm) and need the component class that produces and processes
Set Component (the C of type1,C2,C3…Ci…Cn), j is the label of the production line type, and i is the mark of the element type
Number, each element type has the priority P of corresponding production line typeji, the production line type produces a kind of component class
The average time-consuming of type is hourji, completing the number of days that production task plan needs is duty cycle D；
B) according to the step A) in every kind of element type priority PjiA production scheduling is discharged from high to low, once
The time of production scheduling is less than duty cycle D；
C) to production line type L described in every kindjAssign weight Wj, initial weight Wj=0, component is then distributed into weight
WjThe production scheduling obtained in the step B) is carried out secondary production scheduling, a turnaround time by minimum production line
It is interior, type LjProduction line distribution number of components formula it is as follows:
thisRoundTaskj=Min (Wj,remainTasksj)
In formula, thisRoundTaskjFor assignable the number of components of the production line in a turnaround time, WjFor the production
The weight of line, remainTasksjThis is given birth to after the completion of turnaround time for the remaining assignable the number of components of the production line
The weight W of producing linejIt recalculates,
Wj=Pji*log2(taskNumCi+1)
Turnaround time is repeated, production line type L is obtainedjSecondary production scheduling, in addition, to avoid production line type LjPower
Excessive the causing to distribute within turnaround time of the task of weight is excessive, production line type LjIt is as follows to increase constraint formulations in turnaround time:
Wj=Wj-1
In formula, runningTasksjFor production line type LjThe task plastics being currently running, y are total production line in queue
Quantity, k are adjustment factor, 1 < < k < < 6,For the number of components being currently running；
D the duty cycle D) is divided according to the ratio that each type production line produces different type the number of components, is obtained
The average time weight typehours for needing to produce daily of each type production lineji,
In formula, LineDaysjiFor type LjProduction line production type CiThe number of days that component needs, LineNum 'jiFor type
LjProduction line production type CiThe quantity of component, LineAllNumjFor type LjProduction line produces the quantity of all components,
LineCountiFor production line type LjTotal quantity；
E every class production line L) is givenjAssign time started dtj, according to such production line LjProduce a kind of being averaged for element type
Time-consuming is hourji, in the step C) in obtain production line type LjSecondary production scheduling and in the step D) in take
The every class production line L obtainedjThe average time weight typehours for needing to produce dailyji, production line is calculated according to such as minor function
Type LjProduce the time production plan of component:
Parameter: dtj, hourji, typehoursji, dayhourj
In formula, dayhourjFor production line LjThe time that the same day has produced
Function body:
State an integer day=0；
State a float temptime=0；
Constantly recycle:
If day is 0:
Temptime=hourji；
hourji=hourji-(typehoursji-dayhourj)；
If day is not equal to 0:
Temptime=hourji；
hourji=hourji-typehoursji)；
If hourjiLess than or equal to 0:
If day is equal to 0:
Temptime=temptime+dayhourj；
dayhourj=temptime；
Circulation is jumped out, dt is returnedjIn addition day days add temptime hour；
Day is primary from increasing；
F) according to the step C) secondary production scheduling and the step E) time production plan, export scheduled production knot
Fruit.
Embodiment:
With concentric Flower Garden data instance: including 3 high-rise residential buildings, 2 have 32 floor, and 1 has 23 floor, the component kind of production
Class has:
C1Precast facade；
C2Prefabricated superposed beam and precast stair；
C3Prefabricated balcony, prefabricated air-conditioning plate and prefabricated partition.
Production line type: exterior wall production line L1, interior wall production line L2, fixed die station production line L3；Wherein exterior wall production line L1
It can help interior wall production line L2Production, fixed die station production line L3It can help exterior wall production line L1With interior wall production line L2Production.
The element type that three productions line can produce:
Exterior wall production line L1: C1Precast facade.
Interior wall production line L2: C2Prefabricated superposed beam and precast stair.
Fixed die station production line L3: C3Prefabricated balcony, prefabricated air-conditioning plate and prefabricated partition.
Obtain the priority P that each element type has corresponding production line typeji。
Exterior wall production line L1: 8 hours components, hour11=8.
Interior wall production line L2: 4.7 hours components, hour22=4.7.
Fixed die station production line L3: one day component (pressing man-hour calculation, take herein 15 hours), hour33=15.
Exterior wall production line L1Help interior wall production line L2Production: 9.4 hours components, hour12=9.4.
Fixed die station production line L3Help exterior wall production line L1Production: a component (presses man-hour calculation, takes 15 herein within one day
Hour), hour31=15.
Fixed die station production line L3Help interior wall production line L2Production: a component (presses man-hour calculation, takes 15 herein within one day
Hour), hour32=15.
Exterior wall production line L1Quantity: 1, LineCount1=1
Interior wall production line L2Quantity: 1, LineCount2=1
Fixed die station production line L3Quantity: 22, LineCount3=22
Production cycle: 100 days, D=100.
Pass through the priority P of every kind of element typejiA production scheduling is discharged from high to low:
1, exterior wall production line L1Produce the number of components LineNum '11
2, interior wall production line L2Produce the number of components LineNum '22
3, fixed die station production line L3Produce the number of components LineNum '33
4, exterior wall line helps interior wall line to produce the number of components LineNum '12
5, fixed die station helps exterior wall line to produce the number of components LineNum '31
6, fixed die station helps interior wall line to produce the number of components LineNum '32
According to the ratio of the number of components, calculate in production cycle D=100 that (production cycle D is greater than first time scheduled production
Otherwise time cannot be balanced scheduled production), each type production line average time for needing to produce daily in six kinds of production methods
Weight typehoursji:
LineDays11=100* (LineNum '11/(LineNum′11+LineNum′12))
LineDays22=100* (LineNum '22/(LineNum′22)
LineDays33=100* (LineNum '33/(LineNum′33
+LineNum′31LineNum′32)
LineDays12=100* (LineNum '12/(LineNum′11+LineNum′12))
LineDays31=100* (LineNum '31/(LineNum′33
+LineNum′31LineNum′32))
LineDays32=100* (LineNum '32/(LineNum′33
+LineNum′31LineNum′32))
Then, every class production line L is givenjAssign time started dtj, exterior wall production line L1Time started dt1, interior wall production line L2
Time started dt2, fixed die station production line L3Time started dt3, according to every class production line LjProduce a kind of being averaged for element type
Time-consuming is hourji, in the production line type L of above-mentioned acquirementjSecondary production scheduling and every class production line LjIt is average to need daily
The time weight typehours of productionji, production line type L is calculated according to functionjThe time production plan of component is produced, so
It is avoided afterwards according to secondary production scheduling and time production plan output scheduled production as a result, as shown in Fig. 2, production line production capacity is more balanced
Some production specific electric loads are excessive, and the free time occur in some production lines, utilization rate of equipment and installations improved, to improve production efficiency.
The present invention pass through using calculate weight to balance scheduling problem Optimization Solution, so as to so that production line day production capacity
As balanced as possible within the production cycle, this method can be used for production scheduling, simulate in scheduled production related fields.
It should be understood that the part that this specification does not elaborate belongs to the prior art.
It should be understood that the above-mentioned description for preferred embodiment is more detailed, can not therefore be considered to this
The limitation of invention patent protection range, those skilled in the art under the inspiration of the present invention, are not departing from power of the present invention
Benefit requires to make replacement or deformation under protected ambit, fall within the scope of protection of the present invention, this hair
It is bright range is claimed to be determined by the appended claims.
Claims (4)
1. a kind of balance scheduled production method based on weighted round robin scheduling, it is characterised in that: described method includes following steps:
A the set LineType (L of production line type) is obtained1,L2,L3…Lj…Lm) and the element type that needs to produce and process
Set Component (C1,C2,C3…Ci…Cn), j is the label of the production line type, and i is the label of the element type,
Each element type has the priority P of corresponding production line typeji, the production line type produces a kind of element type
It is average time-consuming for hourji, completing the number of days that production task plan needs is duty cycle D；
B) according to the step A) in every kind of element type priority PjiA production scheduling is discharged from high to low；
C) to production line type L described in every kindjAssign weight Wj, initial weight Wj=0, component is then distributed into weight WjIt is minimum
Production line, the production scheduling obtained in the step B) is subjected to secondary production scheduling, in a turnaround time, type
LjProduction line distribution number of components formula it is as follows:
thisRoundTaskj=Min (Wj,remainTasksj)
In formula, thisRoundTaskjFor assignable the number of components of the production line in a turnaround time, WjFor the production line
Weight, remainTasksjFor the remaining assignable the number of components of the production line, after the completion of a turnaround time, by this production line
Weight WjIt recalculates,
Wj=Pji*log2(taskNumCi+1)
Turnaround time is repeated, production line type L is obtainedjSecondary production scheduling；
D the duty cycle D) is divided according to the ratio that each type production line produces different type the number of components, obtains every kind
The average time weight typehours for needing to produce daily of type production lineji,
In formula, LineDaysjiFor type LjProduction line production type CiThe number of days that component needs, LineNum 'jiFor type LjProduction
Line production type CiThe quantity of component, LineAllNumjFor type LjProduction line produces the quantity of all components, LineCounti
For production line type LjTotal quantity；
E every class production line L) is givenjAssign time started dtj, according to such production line LjProduce a kind of average time-consuming of element type
For hourji, in the step C) in obtain production line type LjSecondary production scheduling and in the step D) in obtain
Every class production line LjThe average time weight typehours for needing to produce dailyji, calculate production line type LjProduce component
Time production plan；
F) according to the step C) secondary production scheduling and the step E) time production plan, export scheduled production result.
2. the balance scheduled production method according to claim 1 based on weighted round robin scheduling, it is characterised in that: the step E)
In, production line type LjThe time production plan for producing component is calculated according to such as minor function:
Parameter: dtj, hourji, typehoursji, dayhourj
In formula, dayhourjFor production line LjThe time that the same day has produced
Function body:
State an integer day=0；
State a float temptime=0；
Constantly recycle:
If day is 0:
Temptime=hourji；
hourji=hourji-(typehoursji-dayhourj)；
If day is not equal to 0:
Temptime=hourji；
hourji=hourji-typehoursji)；
If hourjiLess than or equal to 0:
If day is equal to 0:
Temptime=temptime+dayhourj；
dayhourj=temptime；
Circulation is jumped out, dt is returnedjIn addition day days add temptime hour；
Day is primary from increasing.
3. the balance scheduled production method according to claim 1 based on weighted round robin scheduling, it is characterised in that: the step C)
In, production line type LjIt is as follows to increase constraint formulations in turnaround time:
Wj=Wj-1
In formula, runningTasksjFor production line type LjThe task plastics being currently running, y are total production line number in queue
Amount, k are adjustment factor, 1 < < k < < 6,For the number of components being currently running.
4. the balance scheduled production method according to claim 1 based on weighted round robin scheduling, it is characterised in that: the step B)
In, the time of a production scheduling is less than duty cycle D.
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