CN106292757A - A kind of ceramic powder brick machine that regulates moves the method and device of beam movement velocity - Google Patents
A kind of ceramic powder brick machine that regulates moves the method and device of beam movement velocity Download PDFInfo
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- CN106292757A CN106292757A CN201510312746.0A CN201510312746A CN106292757A CN 106292757 A CN106292757 A CN 106292757A CN 201510312746 A CN201510312746 A CN 201510312746A CN 106292757 A CN106292757 A CN 106292757A
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Abstract
The present invention relates to a kind of regulate the method that ceramic powder brick machine moves beam movement velocity, comprise the following steps: step 1: determine whether to suppress first；Step 2: judge compacting frequency mode；Step 3: compare the synchronization waiting time；Step 4: calculate the location point that accelerating sections terminates and the location point reduced speed now；Step 5: control brake beam descending motion；Step 6: enter compacting link, and after compacting completes, adjust the rate of climb of dynamic beam, terminate this time to suppress flow process；Step 7: change top tank air pressure, and it is circulated compacting according to the parameter setting of asynchronous frequencies, add up each stage time-consuming and total time-consuming；Step 8: adjust the air pressure in fuel tank, terminates this time to suppress flow process.Compared to prior art, the present invention can reduce ceramic brick press and produce the probability of bubble oil in the dynamic beam idle running rapid decrease stage, improves the reliability of equipment.
Description
Technical field
The present invention relates to a kind of method of adjustment, a kind of regulate the method that ceramic powder brick machine moves beam movement velocity；This
Bright further relate to a kind of should device in aforementioned manners.
Background technology
The lost motion that current ceramic brick press moves beam is mostly: accelerate to some speed from motion starting position, quickly through
Idle running stroke, then arrives target location front reduction gear value command speed, then close to target location.Simultaneously because pottery hydraulic pressure
Automatically brick machine oil cylinder area is big, therefore is used mostly replenishing valve when dynamic beam idle running descending motion and carrys out topping up, to reach quick topping up
And save the purpose of energy.
Referring to Fig. 1, existing pottery press includes that top tank 1, replenishing valve control oil cylinder 2, replenishing valve opens and closes control valve system
System 3, topping up valve body 4, master cylinder 5, master cylinder pressurized control valve system 6, dynamic beam motor control valve system 7, dynamic beam piston 8,
Dynamic Liang Sicheng sensor unit 9, fluid 10 and compressed air control valve 11.
It is loaded with enough transmission fluid 10 in described top tank 1, and has enough spaces as compressed-air actuated air-capacitor chamber,
Compressed air in this cavity volume is controlled turnover by compressed air control valve 11 and keeps.The compressed air in this air-capacitor chamber is used for as fluid
Auxiliary power is provided when top tank topping up quick to lower fuel tank.
When dynamic beam idle running moves downward, master cylinder pressurizing valve control control system 6 is closed, the row of dynamic beam motor control valve system 7
Fuel tap (not shown) is opened, master cylinder 5 and the fluid discharge of the main oil cylinder piston bar intracavity of dynamic beam piston 8 composition, fills simultaneously
Liquid valve opens and closes control valve system 3 and starts, and replenishing valve controls oil cylinder 2 and moves down, and drives topping up valve body 4 to be pushed downwards shifting, contains
The fluid 10 being contained in top tank 1 is entered in the plunger shaft of master cylinder 1 and dynamic beam piston 8 composition by topping up passage.Form sky
Big flow topping up to main oil cylinder piston chamber during journey descending motion.In filling process, fluid is from experienced by large tank → fill
The process in liquid pipeline → oil cylinder piston chamber.
During declining, owing to the air-capacitor chamber of top tank constantly increases, its compressed air pressure will constantly reduce.As oil stream
The topping up passage in downstream is due to reasons such as liquid resistance, shape sudden changes, and the absolute pressure in its pipe also synchronizes to reduce.When under compressed air
When dropping to certain value, the oil flow pressure in pipe is less than the air separating pressure being dissolved in fluid, and air separates out also from fluid
It is combined into bubble.Bubble in fluid is the most unfavorable on the impact of hydraulic system, and it can reduce the transmission stiffness of hydraulic oil, reduces
Fluid elastic modelling quantity, makes compacting energy consumption raise.And cause cavitation effect, damage Hydraulic Elements.
Additionally, due to air inlet valve and transmission pipeline pain footpath are excessive with the ratio great disparity of top tank 1 air space, it is impossible to by upper
Open compressed air control valve 11 QI invigorating when that fuel tank air space reducing and ensure stablizing of atmospheric pressure.Improve top tank air-capacitor
The compressed air pressure in chamber, advantageously reduces the air pocket of filling process, but when compressed air pressure is too high, can lead actuation beam idle running
During backhaul, resistance is excessive and the rate of climb that slowed down, and reduces compacting frequency.
On the other hand, owing to ceramic brick press also needs to cloth system, turns over the ancillary equipment such as base subsidiary engine and form a complete production network, this causes working as
Ceramic brick press and cloth system or turn over the operating frequency of base subsidiary engine inconsistent time, for preventing equipment moving from interfering, it is necessary to there is one
The synchronizing frequency of three can be coordinated.This synchronizing frequency is the operating frequency that simultaneously disclosure satisfy that flowing water built-in unit.Therefore make pottery at present
Synchronizing frequency compacting and asynchronous frequencies is had to suppress two kinds of frequency compacting patterns on porcelain brick machine.
For ceramic brick press, during asynchronous frequencies compacting, refer to that equipment is according to specifying parameter to immediately enter next time after having performed action
Cyclic production, asynchronous frequencies is also that equipment combines the largest production frequency that can reach for some parameter set.Synchronizing band
Rate compacting refers to operator's production frequency according to peripheral subsidiary engine, the production frequency specified for ceramic brick press, allows this frequency with outer
If subsidiary engine frequency matches.
When synchronizing compacting frequency less than equipment asynchronous compacting frequency, ceramic brick press will appear from synchronizing the waiting time.Refer to figure
2, it is that current ceramic brick press processes the method asynchronously or synchronously suppressing frequency, and it mainly comprises the steps that
Step one: equipment performs compacting action according to the parameter set, and performing the total of statistics action during compacting action
Time-consumingly.
Step 2: judge that operator sets asynchronous frequencies or synchronizing frequency.As being set as asynchronous frequencies, then it is directly entered next time
Cyclic pressing；As being set as synchronizing frequency, then calculate lock in time, if lock in time is more than zero, then wait lock in time
The rear next one that enters suppresses circulation.If synchronizing the waiting time to be less than or equal to zero, then it is directly entered next compacting circulation.
Being found by the generation principle of above-mentioned air pocket and the compacting of synchronizing frequency, the generation of air pocket comes from oil stream flow at high speed, and same
Step the waiting time idle need not.
Summary of the invention
The invention reside in the shortcoming overcoming prior art with not enough, it is provided that a kind of probability that can reduce air pocket generation, can guarantee that again
Synchronize the method that compacting frequency stable runs.It addition, present invention also offers a kind of should adjusting means in aforementioned manners.
The present invention is to be realized by following technical scheme: a kind of regulate the method that ceramic powder brick machine moves beam movement velocity,
Comprise the following steps:
Step 1: determine whether to suppress first；If suppressing first, then it is provided with the most complete according to asynchronous frequencies parameter
Cyclic pressing, and during cyclic pressing, add up the time-consuming of each action and total time-consuming, time-consuming as sample using each stage action
Time and total time-consuming T_Total store in storage medium, method ends；If it is not, then perform step 2；
Step 2: judge compacting frequency mode；If synchronizing frequency compacting pattern, then perform step 3；If asynchronous frequencies is suppressed
Pattern, then perform step 7；
Step 3: compare the synchronization waiting time；If synchronizing the waiting time to be more than zero, then the synchronization waiting time is increased under dynamic beam
In the fall time, and perform step 4；If synchronizing the waiting time to be less than zero, then it is provided with circulation pressure according to the parameter of asynchronous frequencies
System；
Step 4: calculate the location point that accelerating sections terminates and the location point reduced speed now；
Step 5: control brake beam descending motion；
Step 6: enter compacting link, and after compacting completes, adjust the rate of climb of dynamic beam, terminate this time to suppress flow process；
Step 7: change top tank air pressure, and it is circulated compacting according to the parameter setting of asynchronous frequencies, add up each stage time-consuming
Time-consuming with total；
Step 8: adjust the air pressure in fuel tank, terminates this time to suppress flow process.
Compared to prior art, the present invention can reduce ceramic brick press and produce the probability of bubble oil in the dynamic beam idle running rapid decrease stage,
The reliability of raising equipment.
As a further improvement on the present invention, in step 4, comprise the following steps:
Step 41: according to dynamic beam T_Drop fall time after change, calculates and declines average speed V_Ave=S/T_Drop；Its
Middle S is descending stroke；
Step 42: the target velocity V_CS set declined by dynamic beam is the average decrease speed of 2 times, i.e. V_CS=2*V_Ave；
T_Drop fall time is carried out 3 deciles, and is respectively allocated to acceleration time T1, at the uniform velocity time T2 and T3 deceleration time；
Step 43: the acceleration of dynamic beam be an amplitude coefficient be the SIN function of A_Acc, i.e. A_Acc*Sin (α)；According to dynamic
Beam acceleration A_Acc*Sin (α) is target velocity V_CS at the integration of 0～π, calculates the size of amplitude A_Acc；
Step 44: calculate acceleration displaced segments Acc_Distance in the T1 time, and calculate accelerating sections end position point
Pos_AccEnd=Pos_Start+Acc_Distance, wherein, Pos_Start is that beam starts the positional value started；
Step 45: within the T3 time period, makees using uniform motion speed V_CS as initial velocity, drawing velocity V_Punching
For end speed, acceleration successively decreases with SIN function characteristic during π to 2 π；Calculate deceleration range coefficient A_Dec and obtain
The displacement Dec_Distance that must slow down required；Thus calculate the location point that reduces speed now set out during beam declines
Pos_Break=Pos_SL-Dec_Distance, wherein Pos_SL is that beam starts stamping position.
As a further improvement on the present invention, in steps of 5, comprise the following steps:
Step 51: judge whether that receiving dynamic beam declines enabling signal, as do not received then directly method ends；As received
Then jump procedure 52；
Step 52: read the real time position Pos_Real of dynamic beam；Judge the moving region at dynamic beam real time position place；If dynamic beam
Real time position be in acceleration section, i.e. Pos_Real < Pos_AccEnd, then jump procedure 53；If the real-time position of dynamic beam
Put and be in braking section, be i.e. Pos_Real > Pos_Break time, jump procedure 54；If the real time position of dynamic beam is at the uniform velocity
Duan Shi, i.e. Pos_AccEnd≤Pos_Real < during Pos_Break, jump procedure 55；
Step 53: the amplitude coefficient A_Acc of acceleration is assigned to assignment coefficient A, is set to Sin (α) by acceleration factor Coe,
And make the interval of α for [0, π]；For intermediate computations time T_Temp equal to T1；Jump procedure 56；
Step 54: the amplitude coefficient A_Dec of deceleration is assigned to assignment coefficient A, is set to Sin (α) by acceleration factor Coe,
And make the interval of α for [π, 2 π]；For intermediate computations time T_Temp equal to T3；Jump procedure 56；
Step 55: be assigned to assignment coefficient A by 0, is set to 0, jump procedure 56 by acceleration factor Coe；
Step 56: intermediate computations time T_Temp is divided into n unit time △ t；Palpus of described unit interval and control system
Sweep time identical；When △ t timing is complete, α needs to increase an increment π/n, α=α+π/n；Jump procedure 57；
Step 57: calculate acceleration a=A*Coe* △ t, calculate the fast displacement increment Pos_Incre after a unit interval △ t,
And calculate the theoretical position Pos_Theory=Pos_Theory+Pos_Incre of next unit interval △ t；Relatively current location
After a Pos_Real and unit interval △ t, the displacement difference △ s of theoretical position Pos_Theory, utilizes PID approach to displacement difference △
S carries out feedback closed loop output V_Out.
As a further improvement on the present invention, in step 6, comprise the following steps:
Step 61: judge whether the real time position of dynamic beam reaches beginning stamping position Pos_SL, if yes then enter step 62,
If otherwise jump procedure 5；
Step 62: use the parameter set combination to carry out suppressing link, and add up the time-consuming of the compacting each action of link；
Completing to suppress after link, before dynamic beam rises and start, add up driven beam and initiate descending motion to complete always the consuming of compacting
Time T_NonRise, theoretical time T_Syn_Samp with T_NonRise synchronizing compacting frequency being carried out subtracts each other acquisition is available for moving
The time T_Rise_Syn that beam rises；By T_Rise_Syn and the dynamic beam rise time under asynchronous frequencies compacting state
T_Rise_Samp compares, and calculates and sets out time increment T_Rise_Incre=T_Rise_Syn-T_Rise_Samp that beam rises,
If T_Rise_Incre is more than 0, then reduce the dynamic beam rate of climb；
If T_Rise_Incre is less than or equal to 0, then the dynamic beam vertical motion of execution is set according to the parameter of asynchronous frequencies state, jumps
Go to step 63；
Step 63: after performing complete cyclic pressing, the temporal summation T_Syn_Actual that statistics reality performs is Tong Bu with theory
Time T_Syn_Samp, calculates circulation time increment T_Incre=T_Syn_Actual-T_Syn_Samp；Judge T_Incre's
Numerical value；
If T_Incre is more than 0, then after waiting, circulation time increment T_Incre is increased to the fall time of next circulation
T_Drop, method ends；
If circulation time increment T_Incre less than 0, is increased to the fall time of next circulation in T_Drop by T_Incre,
Method ends；
If T_Incre is equal to 0, direct method ends.
As a further improvement on the present invention, in step 8, comprise the following steps: when comparing the dynamic beam rising after increasing air pressure
Between T_Rise_ASyn and dynamic beam rise time T_Rise_Samp under asynchronous frequencies compacting state；
If T_Rise_ASyn > T_Rise_Samp, reduce the air pressure of top tank；
If T_Rise_ASyn=T_Rise_Samp, then keep air pressure；
If T_Rise_ASyn < T_Rise_Samp, then add atmospheric pressure.
Present invention also offers and a kind of be applied to above-mentioned regulation ceramic powder brick machine and move the device of beam movement velocity method, including
Suppressing frequency mode discrimination module, it is used for distinguishing that compacting pattern belongs to synchronizing frequency compacting or asynchronous frequencies compacting, and
Model selection is carried out according to compacting pattern；
Synchronizing frequency shape body moves beam motion theory value computing module, and it is for calculating dynamic beam idle running descending motion under synchronizing frequency
Time division, acceleration, accelerate displacement end point and the acceleration of braking section and deceleration starting point；
Synchronizing frequency state is moved beam movement velocity-position and is performed module, and it is by moving based on beam motion theory value according to synchronizing frequency shape body
Calculate the exercise data of module, calculate and export the control valve instruction in this scan period according to position feedback error, and predict next
The location point of scan period；
Asynchronous frequencies state air pressure control module, it for promoting the time feedbacking of speed according to dynamic beam, and change compressed air controls
Valve is to change the pressure in top tank air-capacitor chamber.
In order to be more fully understood that and implement, describe the present invention below in conjunction with the accompanying drawings in detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the ceramic press of prior art.
Fig. 2 is that the ceramic brick press of prior art processes the method flow diagram asynchronously or synchronously suppressing frequency.
Fig. 3 is that the ceramic powder brick machine that regulates of the present invention moves the method step flow chart of beam movement velocity.
Fig. 4 is the flow chart of steps that step S4 specifically comprises.
Fig. 5 is the flow chart of steps that step S5 specifically comprises.
Detailed description of the invention
Referring to Fig. 3, the regulation ceramic powder brick machine that it is the present invention moves the method step flow chart of beam movement velocity.This
The method that bright regulation ceramic powder brick machine moves beam movement velocity, comprises the following steps:
Step S1: determine whether to suppress first；If suppressing first, then it is provided with the most complete according to asynchronous frequencies parameter
Cyclic pressing, and during cyclic pressing, add up the time-consuming of each action and total time-consuming, time-consuming as sample using each stage action
Time and total time-consuming T_Total store in storage medium, method ends；If it is not, then perform step S2.
Asynchronous compacting frequency under this step can obtain parameter facilities and each action phase time-consuming, can be as follow-up pressure
The evaluation criteria of system.
Step S2: judge compacting frequency mode；If synchronizing frequency compacting pattern, then perform step S3；If asynchronous frequencies pressure
Molding formula, then perform step S7；
Step S3: compare the synchronization waiting time；If synchronizing the waiting time to be more than zero, then the synchronization waiting time is increased under dynamic beam
In the fall time, and perform step S4；If synchronizing the waiting time to be less than zero, then it is provided with circulation pressure according to the parameter of asynchronous frequencies
System.
Concrete, about the calculating of lock in time, it is exemplified below, such as the asynchronous compacting frequency of equipment is 10 circulations/min, if
Fixed synchronization compacting frequency is 8 circulations/min.The lock in time that then single cycle produces deducts asynchronous equal to the synchronous production cycle
Production cycle, 60/8-60/10=1.5 second/circulation.I.e. equipment is more each than under asynchronous frequencies state under synchronizing frequency compacting state follows
Ring to wait 1.5 seconds.
Step S4: calculate the location point that accelerating sections terminates and the location point reduced speed now.
Concrete, refer to Fig. 4, in step s 4, comprise the following steps:
Step S41: according to dynamic beam T_Drop fall time after change, calculates and declines average speed V_Ave=S/T_Drop；
Wherein S is descending stroke；Wherein, dynamic beam total travel is S known quantity, operator set and set according to production requirement.
Step S42: the target velocity V_CS set declined by dynamic beam is the average decrease speed of 2 times, i.e. V_CS=2*V_Ave；
T_Drop fall time is carried out 3 deciles, and is respectively allocated to acceleration time T1, at the uniform velocity time T2 and T3 deceleration time；
Step S43: the acceleration of dynamic beam be an amplitude coefficient be the SIN function of A_Acc, i.e. A_Acc*Sin (α)；According to dynamic
Beam acceleration A_Acc*Sin (α) is target velocity V_CS at the integration of 0～π, calculates the size of amplitude A_Acc；
Step S44: calculate acceleration displaced segments Acc_Distance in the T1 time, and calculate accelerating sections end position point
Pos_AccEnd=Pos_Start+Acc_Distance, wherein, Pos_Start is that beam starts the positional value started；
Concrete, acceleration A _ Acc*Sin (α) is carried out twice integrating meter from 0 to π and calculates acceleration displaced segments
Acc_Distance.Calculate accelerating sections end position point Pos_AccEnd=Pos_Start+Acc_Distance.Wherein, Pos_Start
It is that beam starts the positional value started.The purpose of this measure be when acceleration according to SIN function from 0 to π during be incremented by time, right
A_Acc*Sin (α) is integrated, and in ensureing the T1 time period, dynamic beam accelerates to target velocity with sinuso sine protractor acceleration from 0
V_CS.And utilize integration of acceleration two times to be equal to displacement principle, the reason accelerated according to sinuso sine protractor in calculating the T1 time period
Opinion displaced segments Acc_Distance, thus can obtain the end position point Pos_AccEnd of acceleration.
Step S45: within the T3 time period, using uniform motion speed V_CS as initial velocity, drawing velocity V_Punching
As end speed, acceleration successively decreases with SIN function characteristic during π to 2 π；Calculate deceleration range coefficient A_Dec and
Obtain the displacement Dec_Distance needed for slowing down；Thus calculate the location point that reduces speed now set out during beam declines
Pos_Break=Pos_SL-Dec_Distance, wherein Pos_SL is that beam starts stamping position.
Step S5: control brake beam descending motion.
Concrete, please refer to Fig. 5, in step s 5, comprise the following steps:
Step S51: judge whether that receiving dynamic beam declines enabling signal, as do not received then directly method ends；As received
To then jump procedure S52；
Step S52: read the real time position Pos_Real of dynamic beam；Judge the moving region at dynamic beam real time position place；If it is dynamic
The real time position of beam is in acceleration section, i.e. Pos_Real < Pos_AccEnd, then jump procedure S53；If dynamic beam is real-time
Position is in braking section, i.e. Pos_Real > Pos_Break time, jump procedure S54；If the real time position of dynamic beam is in even
During speed section, i.e. Pos_AccEnd≤Pos_Real < during Pos_Break, jump procedure S55；
Step S53: the amplitude coefficient A_Acc of acceleration is assigned to assignment coefficient A, acceleration factor Coe is set to Sin (α),
And make the interval of α for [0, π]；For intermediate computations time T_Temp equal to T1；Jump procedure S56；
Step S54: the amplitude coefficient A_Dec of deceleration is assigned to assignment coefficient A, acceleration factor Coe is set to Sin (α),
And make the interval of α for [π, 2 π]；For intermediate computations time T_Temp equal to T3；Jump procedure S56；
Step S55: be assigned to assignment coefficient A by 0, acceleration factor Coe be set to 0, jump procedure S56；
Step S56: intermediate computations time T_Temp is divided into n unit time △ t；The described unit interval must be with control system
The sweep time of system is identical；When △ t timing is complete, α needs to increase an increment π/n, α=α+π/n；Jump procedure S57；
Step S57: calculate acceleration a=A*Coe* △ t, calculate the fast displacement increment Pos_Incre after a unit interval △ t,
And calculate the theoretical position Pos_Theory=Pos_Theory+Pos_Incre of next unit interval △ t；Relatively current location
After a Pos_Real and unit interval △ t, the displacement difference △ s of theoretical position Pos_Theory, utilizes PID approach to displacement difference △
S carries out feedback closed loop output V_Out.
Step S6: enter compacting link, and after compacting completes, adjust the rate of climb of dynamic beam, terminate this time to suppress flow process.
Concrete, in described step S6, comprise the following steps:
Step S61: judge whether the real time position of dynamic beam reaches beginning stamping position Pos_SL, if yes then enter step 62,
If otherwise jump procedure S5；
Step S62: use the parameter set combination to carry out suppressing link, and add up the time-consuming of the compacting each action of link；
Completing to suppress after link, before dynamic beam rises and start, add up driven beam and initiate descending motion to complete always the consuming of compacting
Time T_NonRise, theoretical time T_Syn_Samp with T_NonRise synchronizing compacting frequency being carried out subtracts each other acquisition is available for moving
The time T_Rise_Syn that beam rises；By T_Rise_Syn and the dynamic beam rise time under asynchronous frequencies compacting state
T_Rise_Samp compares, and calculates and sets out time increment T_Rise_Incre=T_Rise_Syn-T_Rise_Samp that beam rises,
If T_Rise_Incre is more than 0, then reduce the dynamic beam rate of climb；
If T_Rise_Incre is less than or equal to 0, then the dynamic beam vertical motion of execution is set according to the parameter of asynchronous frequencies state, jumps
Go to step S63；
Step S63: after performing complete individual cyclic pressing, the temporal summation T_Syn_Actual that statistics reality performs is same with theory
Step time T_Syn_Samp, calculates circulation time increment T_Incre=T_Syn_Actual-T_Syn_Samp；Judge T_Incre
Numerical value；
If T_Incre is more than 0, then after waiting, circulation time increment T_Incre is increased to the fall time of next circulation
T_Drop, method ends；
If circulation time increment T_Incre less than 0, is increased to the fall time of next circulation in T_Drop by T_Incre,
Method ends；
If T_Incre is equal to 0, direct method ends.
Step S7: change top tank air pressure, and it is circulated compacting according to the parameter setting of asynchronous frequencies, add up each stage time-consuming
Time-consuming with total；
Step S8: adjust the air pressure in fuel tank, terminates this time to suppress flow process.
Concrete, in described step S8, comprise the following steps: compare the dynamic beam rise time T_Rise_ASyn after increasing air pressure
With the dynamic beam rise time T_Rise_Samp under asynchronous frequencies compacting state；
If T_Rise_ASyn > T_Rise_Samp, reduce the air pressure of top tank；
If T_Rise_ASyn=T_Rise_Samp, then keep air pressure；
If T_Rise_ASyn < T_Rise_Samp, then add atmospheric pressure.
Present invention also offers and a kind of be applied to above-mentioned regulation ceramic powder brick machine and move the device of beam movement velocity method, including
Suppressing frequency mode discrimination module, it is used for distinguishing that compacting pattern belongs to synchronizing frequency compacting or asynchronous frequencies compacting, and
Model selection is carried out according to compacting pattern；
Synchronizing frequency shape body moves beam motion theory value computing module, and it is for calculating dynamic beam idle running descending motion under synchronizing frequency
Time division, acceleration, accelerate displacement end point and the acceleration of braking section and deceleration starting point；
Synchronizing frequency state is moved beam movement velocity-position and is performed module, and it is by moving based on beam motion theory value according to synchronizing frequency shape body
Calculate the exercise data of module, calculate and export the control valve instruction in this scan period according to position feedback error, and predict next
The location point of scan period；
Asynchronous frequencies state air pressure control module, it for promoting the time feedbacking of speed according to dynamic beam, and change compressed air controls
Valve is to change the pressure in top tank air-capacitor chamber.
Compared to prior art, the present invention can reduce ceramic brick press and produce the probability of bubble oil in the dynamic beam idle running rapid decrease stage,
The reliability of raising equipment.
The invention is not limited in above-mentioned embodiment, if to the various changes of the present invention or deformation without departing from the spirit of the present invention
And scope, if within the scope of these are changed and deform claim and the equivalent technologies belonging to the present invention, then the present invention is also intended to
Comprise these to change and deformation.
Claims (6)
1. regulate the method that ceramic powder brick machine moves beam movement velocity, comprise the following steps:
Step 1: determine whether to suppress first；If suppressing first, then it is provided with the most complete according to asynchronous frequencies parameter
Cyclic pressing, and add up the time-consuming of each action and total time-consuming during cyclic pressing, time-consuming as sample using each stage action
This time and total time-consuming T_Total store in storage medium, method ends；If it is not, then perform step 2；
Step 2: judge compacting frequency mode；If synchronizing frequency compacting pattern, then perform step 3；If asynchronous frequencies is suppressed
Pattern, then perform step 7；
Step 3: compare the synchronization waiting time；If synchronizing the waiting time to be more than zero, then the synchronization waiting time is increased to dynamic beam and declines
In time, and perform step 4；If synchronizing the waiting time to be less than zero, then it is provided with circulation pressure according to the parameter of asynchronous frequencies
System；
Step 4: calculate the location point that accelerating sections terminates and the location point reduced speed now；
Step 5: control brake beam descending motion；
Step 6: enter compacting link, and after compacting completes, adjust the rate of climb of dynamic beam, terminate this time to suppress flow process；
Step 7: change top tank air pressure, and arrange according to the parameter of asynchronous frequencies and be circulated compacting, add up each stage time-consuming and
Total time-consuming；
Step 8: adjust the air pressure in fuel tank, terminates this time to suppress flow process.
The method that the most according to claim 1, regulation ceramic powder brick machine moves beam movement velocity, it is characterised in that: in step 4
In, comprise the following steps:
Step 41: according to dynamic beam T_Drop fall time after change, calculates and declines average speed V_Ave=S/T_Drop；
Wherein S is descending stroke；
Step 42: the target velocity V_CS set declined by dynamic beam is the average decrease speed of 2 times, i.e.
V_CS=2*V_Ave；T_Drop fall time is carried out 3 deciles, and is respectively allocated to acceleration time T1, at the uniform velocity time
T2 and T3 deceleration time；
Step 43: the acceleration of dynamic beam be an amplitude coefficient be the SIN function of A_Acc, i.e. A_Acc*Sin (α)；According to
Dynamic beam acceleration A_Acc*Sin (α) is target velocity V_CS at the integration of 0～π, calculates the size of amplitude A_Acc；
Step 44: calculate acceleration displaced segments Acc_Distance in the T1 time, and calculate accelerating sections end position point
Pos_AccEnd=Pos_Start+Acc_Distance, wherein, Pos_Start is that beam starts the positional value started；
Step 45: within the T3 time period, using uniform motion speed V_CS as initial velocity, drawing velocity V_Punching
As end speed, acceleration successively decreases with SIN function characteristic during π to 2 π；Calculate deceleration range coefficient A_Dec
With the displacement Dec_Distance obtained needed for slowing down；Thus calculate the location point that reduces speed now set out during beam declines
Pos_Break=Pos_SL-Dec_Distance, wherein Pos_SL is that beam starts stamping position.
3. regulate, according to claim 2, the method that ceramic powder brick machine moves beam movement velocity, it is characterised in that: in steps of 5,
Comprise the following steps:
Step 51: judge whether that receiving dynamic beam declines enabling signal, as do not received then directly method ends；As connect
Receive then jump procedure 52；
Step 52: read the real time position Pos_Real of dynamic beam；Judge the moving region at dynamic beam real time position place；If
The real time position of dynamic beam is in acceleration section, i.e. Pos_Real < Pos_AccEnd, then jump procedure 53；If dynamic beam
Real time position be in braking section, i.e. during Pos_Real > Pos_Break, jump procedure 54；If the real-time position of dynamic beam
Put be at the uniform velocity section time, i.e. Pos_AccEnd≤Pos_Real < during Pos_Break, jump procedure 55；
Step 53: the amplitude coefficient A_Acc of acceleration is assigned to assignment coefficient A, acceleration factor Coe is set to Sin (α),
And make the interval of α for [0, π]；For intermediate computations time T_Temp equal to T1；Jump procedure 56；
Step 54: the amplitude coefficient A_Dec of deceleration is assigned to assignment coefficient A, acceleration factor Coe is set to Sin (α),
And make the interval of α for [π, 2 π]；For intermediate computations time T_Temp equal to T3；Jump procedure 56；
Step 55: be assigned to assignment coefficient A by 0, is set to 0, jump procedure 56 by acceleration factor Coe；
Step 56: intermediate computations time T_Temp is divided into n unit time △ t；The described unit interval must be with control
The sweep time of system is identical；When △ t timing is complete, α needs to increase an increment π/n, α=α+π/n；Redirect step
Rapid 57；
Step 57: calculate acceleration a=A*Coe* △ t, calculate the fast displacement increment after a unit interval △ t
Pos_Incre, and calculate the theoretical position Pos_Theory=Pos_Theory+Pos_Incre of next unit interval △ t；
After a relatively current location Pos_Real and unit interval △ t, the displacement difference △ s of theoretical position Pos_Theory, utilizes PID
Method carries out feedback closed loop output V_Out to displacement difference △ s.
The method that the most according to claim 3, regulation ceramic powder brick machine moves beam movement velocity, it is characterised in that: in step 6
In, comprise the following steps:
Step 61: judge whether the real time position of dynamic beam reaches beginning stamping position Pos_SL, if yes then enter step
62, if otherwise jump procedure 5；
Step 62: use the parameter set combination to carry out suppressing link, and add up the time-consuming of the compacting each action of link；
Completing to suppress after link, before dynamic beam rises and start, adding up driven beam, to initiate descending motion complete to suppressing
Total time-consuming T_NonRise, carries out subtracting each other obtaining by theoretical time T_Syn_Samp with T_NonRise synchronizing compacting frequency
The time T_Rise_Syn that dynamic beam rises must be available for；T_Rise_Syn is risen with the dynamic beam under asynchronous frequencies compacting state
Time, T_Rise_Samp compared, and calculates and sets out the time increment that beam rises
T_Rise_Incre=T_Rise_Syn-T_Rise_Samp, if T_Rise_Incre is more than 0, then reduces the dynamic beam rate of climb；
If T_Rise_Incre is less than or equal to 0, then the dynamic beam vertical motion of execution is set according to the parameter of asynchronous frequencies state,
Jump procedure 63；
Step 63: after performing complete cyclic pressing, the temporal summation T_Syn_Actual that statistics reality performs is with theoretical
Lock in time, T_Syn_Samp, calculated circulation time increment T_Incre=T_Syn_Actual-T_Syn_Samp；Judge
The numerical value of T_Incre；
If T_Incre is more than 0, then after waiting, circulation time increment T_Incre is increased to the decline of next circulation
Time T_Drop, method ends；
If T_Incre is less than 0, circulation time increment T_Incre is increased to T_Drop fall time of next circulation
In, method ends；
If T_Incre is equal to 0, direct method ends.
The method that the most according to claim 4, regulation ceramic powder brick machine moves beam movement velocity, it is characterised in that: in step 8
In, comprise the following steps: compare the dynamic beam rise time T_Rise_ASyn after increasing air pressure and suppress shape with in asynchronous frequencies
Dynamic beam rise time T_Rise_Samp under state；
If T_Rise_ASyn > T_Rise_Samp, reduce the air pressure of top tank；
If T_Rise_ASyn=T_Rise_Samp, then keep air pressure；
If T_Rise_ASyn < T_Rise_Samp, then add atmospheric pressure.
6. it is applied to described in claim 1-5 any one regulate ceramic powder brick machine and moves a device for beam movement velocity method, its
It is characterised by: include
Suppressing frequency mode discrimination module, it is used for distinguishing that compacting pattern belongs to synchronizing frequency compacting or asynchronous frequencies compacting,
And carry out model selection according to compacting pattern；
Synchronizing frequency shape body moves beam motion theory value computing module, and it declines fortune for calculating the dynamic beam idle running under synchronizing frequency
The dynamic time divides, acceleration, accelerates displacement end point and the acceleration of braking section and deceleration starting point；
Synchronizing frequency state is moved beam movement velocity-position and is performed module, and it is for moving beam motion theory according to synchronizing frequency shape body
The exercise data of value computing module, calculates and exports the control valve instruction in this scan period according to position feedback error, and
The location point of the lower scan cycle of prediction；
Asynchronous frequencies state air pressure control module, it, for promoting the time feedbacking of speed according to dynamic beam, changes compressed air
Control valve is to change the pressure in top tank air-capacitor chamber.
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| CN104441223A (en) * | 2013-09-23 | 2015-03-25 | 安徽君得石业有限公司 | Automatic demolding forming system used for synthetic quartz plates through atmospheric pressurization |
| CN204344551U (en) * | 2014-12-08 | 2015-05-20 | 佛山市恒力泰机械有限公司 | A kind of dynamic beam governor oil line structure of hydraulic press |
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| JPH04155208A (en) * | 1990-10-18 | 1992-05-28 | Kubota Corp | Discrimination on acceptability of platelike work |
| JPH0947825A (en) * | 1995-08-01 | 1997-02-18 | Sky Alum Co Ltd | Superplastic forming device |
| CN2422109Y (en) * | 2000-04-02 | 2001-03-07 | 顺德市科达陶瓷机械有限公司 | Hydraulic control system for brick press machine |
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| CN106292757B (en) | 2019-03-08 |
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