CN116280897A - Automatic feeding adjustment control method and system, storage medium and sand making building - Google Patents
Automatic feeding adjustment control method and system, storage medium and sand making building Download PDFInfo
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- CN116280897A CN116280897A CN202310545189.1A CN202310545189A CN116280897A CN 116280897 A CN116280897 A CN 116280897A CN 202310545189 A CN202310545189 A CN 202310545189A CN 116280897 A CN116280897 A CN 116280897A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/12—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface comprising a series of individual load-carriers fixed, or normally fixed, relative to traction element
- B65G17/126—Bucket elevators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/02—Feeding devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
- B65G2201/045—Sand, soil and mineral ore
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Abstract
The application provides an automatic feeding adjustment control method and system, a storage medium and a sand making building, and relates to the technical field of sand making buildings, wherein the automatic feeding adjustment control method comprises the following steps: acquiring a target current value of the bucket, an initial operating frequency of the feeder and an adjustment coefficient of the feeder; acquiring an operation current value of a bucket lift during operation of the sand making building; and adjusting the feeding speed of the feeder according to the target current value, the initial running frequency of the feeder, the adjustment coefficient of the feeder and the running current value. Through the technical scheme of this application, can reduce the work load of manual monitoring adjustment, guarantee that the system sand building works at stable state for a long time, improve the work efficiency of system sand building, guarantee the normal operating that the bucket carried.
Description
Technical Field
The application relates to the technical field of sand making buildings, in particular to an automatic feeding adjustment control method and system, a storage medium and a sand making building.
Background
At present, the feeding machine of the sand making building adopts a vibration feeding mode, the motor of the feeding machine adopts a frequency converter open-loop control mode, the feeding speed of the feeding machine can be controlled by adjusting the frequency, and the whole sand outlet speed and efficiency of the sand making building can be controlled by controlling the feeding speed of the feeding machine. When the speed of the feeder is too slow, the broken sand making machine can possibly not work at full power, so that the working efficiency of the sand making building is reduced, electric energy is wasted, and the sand making cost is increased. When the speed of the feeder is too high, overload work of the bucket lifter and the sand making machine is possibly caused, the motor current is continuously in an overload state, finally, system faults are caused, and the motors of the bucket lifter and the sand making machine are damaged when serious, so that the service life of equipment is influenced.
At present, the speed of the feeder is adjusted manually by an operator at the frequency input position of the feeder on an industrial personal computer in a control room, and according to the comprehensive judgment of the current of a bucket elevator and a sand machine, when the current is too large, the operating frequency of the vibrating feeder is reduced, otherwise, when the current is too small, the operating frequency of the vibrating feeder is increased, and a given frequency value is input by experience or test value of the operator, and then whether the given frequency can be further adjusted is determined according to the sand production efficiency and the sand production quality until the optimal sand production efficiency is reached. In general, the manual frequency adjustment method of the feeder not only consumes manpower, but also cannot ensure accuracy, has influence on the efficiency and quality of sand making, and cannot exert the optimal sand making capability of the sand making building.
Disclosure of Invention
The speed regulation manual work that this application aims at solving or improving the batcher needs big, the unstable problem of degree of accuracy.
To this end, a first object of the present application is to provide an automatic feed adjustment control method.
A second object of the present application is to provide an automatic feed adjustment control system.
A third object of the present application is to provide an automatic feed adjustment control system.
A fourth object of the present application is to provide a readable storage medium.
A fifth object of the present application is to provide a sand making building.
To achieve the first object of the present application, a technical solution of a first aspect of the present application provides an automatic feeding adjustment control method, a sand making building includes a bucket and a feeder, the automatic feeding adjustment control method includes: acquiring a target current value of the bucket, an initial operating frequency of the feeder and an adjustment coefficient of the feeder; acquiring an operation current value of a bucket lift during operation of the sand making building; and adjusting the feeding speed of the feeder according to the target current value of the bucket, the initial operating frequency of the feeder, the adjusting coefficient of the feeder and the operating current value of the bucket.
According to the automatic feeding adjustment control method provided by the application, the sand making building comprises a bucket elevator and a feeder, and the target current value of the bucket elevator, the initial running frequency of the feeder and the adjustment coefficient of the feeder are firstly obtained. And then, acquiring an operation current value of the bucket elevator during operation of the sand making building, which is equivalent to acquiring a load of the bucket elevator, comparing the load with a rated design load of the bucket elevator, namely, a target current value of the bucket elevator, calculating whether the bucket elevator can transport more raw materials, and according to the judgment after comparison, changing the speed control of the feeder into a closed-loop speed control mode according to the operation current value, the target current value, the initial operation frequency of the feeder and the continuous adjustment of one period of the adjustment coefficient of the feeder, and finally achieving a dynamic balance, thereby reducing the workload of manual monitoring adjustment, ensuring that the sand making building works in a stable state for a long time, improving the working efficiency of the sand making building, ensuring the normal operation of the bucket elevator, indirectly protecting the motor of the broken sand making machine and reducing the failure rate.
In addition, the technical scheme provided by the application can also have the following additional technical characteristics:
according to the technical scheme, the feeding speed of the feeder is adjusted according to the target current value of the bucket, the initial running frequency of the feeder, the adjustment coefficient of the feeder and the running current value of the bucket, and the feeding speed adjusting device specifically comprises the following steps: judging whether the running current value is smaller than the target current value or not; if yes, the stable operation frequency of the feeder is obtained according to the target current value and the operation current value; and dynamically adjusting the operation frequency of the feeder according to the stable operation frequency of the feeder, the initial operation frequency of the feeder and the adjustment coefficient of the feeder.
In the technical scheme, the feeding speed of the feeder is adjusted according to the target current value, the initial running frequency of the feeder, the adjustment coefficient of the feeder and the running current value, and particularly whether the running current value is smaller than the target current value is judged first. If the running current value is smaller than the target current value, a mathematical model is established according to the linear relation, and the stable running frequency of the feeder is obtained through the target current value and the running current value. Since this steady state adjustment is not possible once in place, a single adjustment in place will result in a repetitive oscillation of the system, so the system needs to be adjusted gradually, close to the target, without repeating around the target, and thus the operating frequency of the feeder is dynamically adjusted according to the feeder steady operating frequency, the feeder initial operating frequency, and the feeder adjustment factor.
In the above technical scheme, according to target current value, the initial operating frequency of batcher, batcher adjustment coefficient and the operating current value adjustment batcher that fights, still include: judging whether the running current value is smaller than the target current value or not; if not, the operation frequency of the feeder is adjusted to enable the operation current value to be smaller than the target current value, the stable operation frequency of the feeder is obtained according to the target current value and the operation current value, and the operation frequency of the feeder is dynamically adjusted according to the stable operation frequency of the feeder, the initial operation frequency of the feeder and the adjustment coefficient of the feeder.
In the technical scheme, if the running current value is greater than or equal to the target current value, the frequency of the feeder is manually adjusted to enable the feeder to return to a state that the running current value is smaller than the target current value, and then a program in the PLC automatically starts an adjusting stage of automatic feeding of the feeder, so that a stable sand making process is dynamically maintained. The PLC is Programmable Logic Controller and the programmable logic controller.
In the above technical scheme, the method for dynamically adjusting the operation frequency of the feeder according to the stable operation frequency of the feeder, the initial operation frequency of the feeder and the adjustment coefficient of the feeder specifically comprises the following steps: obtaining a variable frequency given value according to the stable operation frequency of the feeder, the initial operation frequency of the feeder and the adjustment coefficient of the feeder; the frequency conversion given value is fed back to the frequency converter of the feeder to control the motor of the feeder to work.
In the technical scheme, the speed closed loop of the feeder does not directly collect speed feedback, but converts the speed feedback signal into a frequency converter of the feeder through bucket lifting current, and the frequency converter needs to be adjusted to a balance state by the closed loop step by step. The variable frequency given value of the feeder in the next period is obtained through the stable operation frequency of the feeder, the initial operation frequency of the feeder and the adjustment coefficient of the feeder, and the variable frequency given value is fed back to the frequency converter of the feeder so as to control the motor of the feeder to work. The larger the adjustment coefficient of the feeder is, the shorter the time to reach the stability is, but the worse the stability is in the process, the longer the adjustment coefficient of the feeder is, but the stable transition to the stable state is.
In the above technical scheme, the calculation formula of the stable operation frequency of the feeder is:
Fs=50×Ib/Ia；
wherein, fs is the stable operating frequency of the feeder, ib is the operating current value, and Ia is the target current value.
In the technical scheme, a mathematical model (Ia-Ib)/Ia= (50-Fs)/50 is established according to a linear relation, and the stable running frequency Fs of the feeder can be calculated.
In the above technical scheme, the calculation formula of the variable frequency given value is:
Fo=Fi+K（Fs-Fi）；0<K<1
wherein Fo is a variable frequency given value, fs is a stable operation frequency of the feeder, fi is an initial operation frequency of the feeder, and K is an adjustment coefficient of the feeder.
In the technical scheme, the variable frequency given value can be obtained through the stable operation frequency of the feeder, the initial operation frequency of the feeder and the adjustment coefficient of the feeder, so that the feeding speed of the feeder is changed. The variable frequency given value is continuously compared and adjusted one cycle by one cycle, the control of the feeder is changed into a closed-loop speed control mode, and finally, a dynamic balance is achieved, so that the maximum efficiency of the sand making building can be achieved.
To achieve the second object of the present application, a technical solution of a second aspect of the present application provides an automatic feeding adjustment control system, including: the first acquisition module is used for acquiring a target current value of the bucket, an initial running frequency of the feeder and an adjustment coefficient of the feeder; the second acquisition module is used for acquiring an operation current value of a bucket lift when the sand making building operates; and the adjusting module is used for adjusting the feeding speed of the feeder according to the target current value, the initial running frequency of the feeder, the adjusting coefficient of the feeder and the running current value.
According to the automatic feeding adjustment control system, the automatic feeding adjustment control system comprises a first acquisition module, a second acquisition module and an adjustment module. The first acquisition module is used for acquiring a target current value of the bucket, an initial operation frequency of the feeder and an adjustment coefficient of the feeder. The second acquisition module is used for acquiring an operation current value of a bucket lift during operation of the sand making building. The adjusting module is used for adjusting the feeding speed of the feeder according to the target current value, the initial running frequency of the feeder, the adjusting coefficient of the feeder and the running current value. According to the continuous adjustment of the operation current value, the target current value, the initial operation frequency of the feeder and the adjustment coefficient of the feeder in one period and one period, the speed control of the feeder is changed into a closed-loop speed control mode, and dynamic balance is finally achieved, so that the workload of manual monitoring and adjustment is reduced, the sand making building is ensured to work in a stable state for a long time, the working efficiency of the sand making building is improved, the normal operation of a bucket elevator motor is ensured, the motor of the broken sand making machine is indirectly protected, and the failure rate is reduced.
To achieve the third object of the present application, a technical solution of a third aspect of the present application provides an automatic feeding adjustment control system, including: the automatic feeding adjustment control method according to any one of the first aspect is realized when the processor executes the program or the instruction, so that the technical effects of any one of the first aspect are achieved, and the description is omitted herein.
In order to achieve the fourth object of the present application, a fourth aspect of the present application provides a readable storage medium, on which a program or an instruction is stored, where the program or the instruction, when executed by a processor, implements the steps of the automatic feeding adjustment control method according to any one of the first aspect, so that the method has the technical effects of any one of the first aspect, which are not described herein again.
To achieve the fifth object of the present application, a technical solution of a fifth aspect of the present application provides a sand making building, including: an automatic feed adjustment control system according to any one of the aspects of the second aspect of the present application; and/or an automatic feed adjustment control system as in any of the third aspects of the present application; and/or a readable storage medium as in any one of the fourth aspects of the present application.
The sand making building provided according to the technical scheme of the application comprises the automatic feeding adjustment control system according to any one of the technical scheme of the second aspect of the application and/or the automatic feeding adjustment control system according to any one of the technical scheme of the third aspect of the application and/or the readable storage medium according to any one of the technical scheme of the fourth aspect of the application, so that the sand making building has all beneficial effects of the automatic feeding adjustment control system according to any one of the technical scheme of the second aspect of the application and/or the automatic feeding adjustment control system according to any one of the technical scheme of the third aspect of the application and/or the readable storage medium according to any one of the technical scheme of the fourth aspect of the application, and is not repeated herein.
Additional aspects and advantages of the present application will become apparent in the following description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, wherein:
FIG. 1 is a flow chart illustrating steps of an automatic feed adjustment control method according to one embodiment of the present application;
FIG. 2 is a flow chart illustrating steps of an automatic feed adjustment control method according to one embodiment of the present disclosure;
FIG. 3 is a flow chart illustrating steps of an automatic feed adjustment control method according to one embodiment of the present disclosure;
FIG. 4 is a flow chart illustrating steps of an automatic feed adjustment control method according to one embodiment of the present disclosure;
FIG. 5 is a block diagram illustrating a schematic of an automatic feed adjustment control system according to one embodiment of the present application;
FIG. 6 is a block schematic diagram of an automatic feed adjustment control system according to another embodiment of the present application;
FIG. 7 is a schematic diagram of a sand making building according to one embodiment of the present disclosure;
FIG. 8 is a flow chart illustrating steps of an automatic feed adjustment control method according to one embodiment of the present disclosure;
FIG. 9 is a schematic electrical schematic diagram of an automatic feed adjustment control method according to one embodiment of the present disclosure;
FIG. 10 is a schematic electrical schematic diagram of an automatic feed adjustment control method according to one embodiment of the present disclosure;
FIG. 11 is a schematic electrical schematic diagram of an automatic feed adjustment control method according to one embodiment of the present disclosure;
FIG. 12 is a schematic electrical schematic diagram of an automatic feed adjustment control method according to one embodiment of the present disclosure;
FIG. 13 is a schematic diagram of a front view of a sand making building according to one embodiment of the present disclosure;
FIG. 14 is a schematic side view of a sand making building according to one embodiment of the present application;
FIG. 15 is a schematic top view of a sand making building according to one embodiment of the present disclosure;
FIG. 16 is a schematic view of a partial front view of a sand making building according to one embodiment of the present application;
FIG. 17 is a schematic view of a partial front view of a sand making building according to another embodiment of the present application;
fig. 18 is a schematic diagram of a partial side view of a sand making building according to one embodiment of the present application.
Wherein, the correspondence between the reference numerals and the component names in fig. 5 to 18 is:
10: an automatic feed adjustment control system; 110: a first acquisition module; 120: a second acquisition module; 130: an adjustment module; 20: an automatic feed adjustment control system; 300: a memory; 400: a processor; 50: sand making building; 510: bucket lifting; 520: and a feeder.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced otherwise than as described herein, and thus the scope of the present application is not limited by the specific embodiments disclosed below.
Automatic feed adjustment control methods and systems, readable storage media, sand making buildings according to some embodiments of the present application are described below with reference to fig. 1-18.
As shown in fig. 1, an embodiment of the first aspect of the present application provides an automatic feeding adjustment control method for a sand making building, the sand making building including a bucket and a feeder, the automatic feeding adjustment control method including the steps of:
s102: acquiring a target current value of the bucket, an initial operating frequency of the feeder and an adjustment coefficient of the feeder;
s104: acquiring an operation current value of a bucket lift during operation of the sand making building;
s106: and adjusting the feeding speed of the feeder according to the target current value, the initial running frequency of the feeder, the adjustment coefficient of the feeder and the running current value.
According to the automatic feeding adjustment control method provided by the embodiment, the sand making building comprises a bucket elevator and a feeder, and the target current value of the bucket elevator, the initial running frequency of the feeder and the adjustment coefficient of the feeder are firstly obtained. And then, acquiring an operation current value of the bucket elevator during operation of the sand making building, which is equivalent to acquiring a load of the bucket elevator, comparing the load with a rated design load of the bucket elevator, namely, a target current value of the bucket elevator, calculating whether the bucket elevator can transport more raw materials, and according to the judgment after comparison, changing the speed control of the feeder into a closed-loop speed control mode according to the operation current value, the target current value, the initial operation frequency of the feeder and the continuous adjustment of one period of the adjustment coefficient of the feeder, and finally achieving a dynamic balance, thereby reducing the workload of manual monitoring adjustment, ensuring that the sand making building works in a stable state for a long time, improving the working efficiency of the sand making building, ensuring the normal operation of the bucket elevator, indirectly protecting the motor of the broken sand making machine and reducing the failure rate.
As shown in fig. 2, according to an automatic feeding adjustment control method according to an embodiment of the present application, a feeding speed of a feeder is adjusted according to a target current value, an initial operation frequency of the feeder, a feeding adjustment coefficient of the feeder, and an operation current value, and specifically includes the steps of:
s202: judging whether the running current value is smaller than the target current value or not;
s204: if yes, the stable operation frequency of the feeder is obtained according to the target current value and the operation current value;
s206: dynamically adjusting the operation frequency of the feeder according to the stable operation frequency of the feeder, the initial operation frequency of the feeder and the adjustment coefficient of the feeder;
s208: if not, the operation frequency of the feeder is adjusted to enable the operation current value to be smaller than the target current value, the stable operation frequency of the feeder is obtained according to the target current value and the operation current value, and the operation frequency of the feeder is dynamically adjusted according to the stable operation frequency of the feeder, the initial operation frequency of the feeder and the adjustment coefficient of the feeder.
In this embodiment, the feeding speed of the feeder is adjusted according to the target current value, the initial operating frequency of the feeder, the feeder adjustment coefficient, and the operating current value, specifically, whether the operating current value is smaller than the target current value is first determined. If the running current value is smaller than the target current value, a mathematical model is established according to the linear relation, and the stable running frequency of the feeder is obtained through the target current value and the running current value. Since this steady state adjustment is not possible once in place, a single adjustment in place will result in a repetitive oscillation of the system, so the system needs to be adjusted gradually, close to the target, without repeating around the target, and thus the operating frequency of the feeder is dynamically adjusted according to the feeder steady operating frequency, the feeder initial operating frequency, and the feeder adjustment factor. If the running current value is greater than or equal to the target current value, the frequency of the feeder is manually adjusted to enable the feeder to return to a state that the running current value is smaller than the target current value, and a program in the PLC can automatically start an adjusting stage of automatic feeding of the feeder, so that a stable sand making process is dynamically maintained.
As shown in fig. 3, the method dynamically adjusts the operation frequency of the feeder according to the stable operation frequency of the feeder, the initial operation frequency of the feeder and the adjustment coefficient of the feeder, and specifically comprises the following steps:
s302: obtaining a variable frequency given value according to the stable operation frequency of the feeder, the initial operation frequency of the feeder and the adjustment coefficient of the feeder;
s304: the frequency conversion given value is fed back to the frequency converter of the feeder to control the motor of the feeder to work.
In this embodiment, the closed loop of the speed of the feeder is not directly fed back, but is converted into a speed feedback signal by the bucket current to the frequency converter of the feeder, and the closed loop needs to be adjusted to the balance state step by step. The variable frequency given value of the feeder in the next period is obtained through the stable operation frequency of the feeder, the initial operation frequency of the feeder and the adjustment coefficient of the feeder, and the variable frequency given value is fed back to the frequency converter of the feeder so as to control the motor of the feeder to work. The larger the adjustment coefficient of the feeder is, the shorter the time to reach the stability is, but the worse the stability is in the process, the longer the adjustment coefficient of the feeder is, but the stable transition to the stable state is.
As shown in fig. 4, according to an automatic feeding adjustment control method according to an embodiment of the present application, a target current value of a bucket, an initial operating frequency of a feeder, and an adjustment coefficient of the feeder are obtained, and specifically the method includes the following steps:
s402: acquiring rated current of bucket lifting, initial operating frequency of a feeder and adjustment coefficient of the feeder;
s404: the target current value of the bucket is set according to the rated current.
In this embodiment, the target current value of the bucket, the initial operating frequency of the feeder, and the feeder adjustment coefficient are obtained, specifically, the rated current of the bucket, the initial operating frequency of the feeder, and the feeder adjustment coefficient are obtained first, and then the target current value of the bucket is set according to the rated current. Specifically, according to the capacity of the bucket elevator motor, a target current value during bucket elevator stabilization is set on an interface of the industrial personal computer, for example, the rated current of the bucket elevator motor is 85A, the bucket elevator current is required to be stabilized at 80A during stabilization, and the target current value of the bucket elevator is set at 80A on the interface of the industrial personal computer.
In the above embodiment, the feeder adjustment coefficient is greater than 0 and the feeder adjustment coefficient is less than 1. The smaller the feeder adjustment factor, the longer it takes to reach steady state, but will transition smoothly to steady state. The greater the feeder adjustment factor, the shorter the time to reach stability.
In some embodiments, the calculation formula for the steady operation frequency of the feeder is:
Fs=50×Ib/Ia；
wherein, fs is the stable operating frequency of the feeder, ib is the operating current value, and Ia is the target current value.
According to the linear relation, a mathematical model (Ia-Ib)/Ia= (50-Fs)/50 is established, and the stable operation frequency Fs of the feeder can be calculated.
In the above embodiment, the calculation formula of the frequency conversion given value is:
Fo=Fi+K（Fs-Fi）；0<K<1
wherein Fo is a variable frequency given value, fs is a stable operation frequency of the feeder, fi is an initial operation frequency of the feeder, and K is an adjustment coefficient of the feeder. The variable frequency given value can be obtained through the stable operation frequency of the feeder, the initial operation frequency of the feeder and the adjustment coefficient of the feeder, so that the feeding speed of the feeder is changed. The variable frequency given value is continuously compared and adjusted one cycle by one cycle, the control of the feeder is changed into a closed-loop speed control mode, and finally, a dynamic balance is achieved, so that the maximum efficiency of the sand making building can be achieved.
As shown in fig. 5, an embodiment of a second aspect of the present application provides an automatic feed adjustment control system 10 comprising: a first obtaining module 110, configured to obtain a target current value of the bucket, an initial operating frequency of the feeder, and an adjustment coefficient of the feeder; a second obtaining module 120, configured to obtain an operation current value of a bucket in operation of the sand making building; the adjusting module 130 is configured to adjust a feeding speed of the feeder according to the target current value, the initial operating frequency of the feeder, the adjustment coefficient of the feeder, and the operating current value.
The automatic feed adjustment control system 10 provided according to the present embodiment includes a first acquisition module 110, a second acquisition module 120, and an adjustment module 130. The first acquisition module 110 is configured to acquire a target current value of the bucket, an initial operating frequency of the feeder, and an adjustment coefficient of the feeder. The second obtaining module 120 is configured to obtain an operation current value of a bucket of the sand making building during operation. The adjustment module 130 is configured to adjust a feeding speed of the feeder according to the target current value, the initial operating frequency of the feeder, the feeder adjustment coefficient, and the operating current value. According to the continuous adjustment of the operation current value, the target current value, the initial operation frequency of the feeder and the adjustment coefficient of the feeder in one period and one period, the speed control of the feeder is changed into a closed-loop speed control mode, and dynamic balance is finally achieved, so that the workload of manual monitoring and adjustment is reduced, the sand making building is ensured to work in a stable state for a long time, the working efficiency of the sand making building is improved, the normal operation of a bucket elevator motor is ensured, the motor of the broken sand making machine is indirectly protected, and the failure rate is reduced.
As shown in fig. 6, an embodiment of a third aspect of the present application provides an automatic feed adjustment control system 20 comprising: the memory 300 and the processor 400, wherein the memory 300 stores a program or an instruction that can be executed on the processor 400, and the processor 400 implements the steps of the automatic feeding adjustment control method in any one of the embodiments of the first aspect when executing the program or the instruction, so that the technical effects of any one of the embodiments of the first aspect are provided, and are not described herein again.
An embodiment of the fourth aspect of the present application provides a readable storage medium, on which a program or an instruction is stored, where the program or the instruction, when executed by a processor, implement the steps of the automatic feeding adjustment control method according to any one of the embodiments of the first aspect, so that the technical effects of any one of the embodiments of the first aspect are achieved, and are not described herein again.
The processor is used for executing instructions or programs to realize the following processing procedures:
acquiring a target current value of the bucket, an initial operating frequency of the feeder and an adjustment coefficient of the feeder;
acquiring an operation current value of a bucket lift during operation of the sand making building;
and adjusting the feeding speed of the feeder according to the target current value, the initial running frequency of the feeder, the adjustment coefficient of the feeder and the running current value.
According to the method, the speed control of the feeder is changed into a closed-loop speed control mode through continuous adjustment of one period and one period according to the operation current value, the target current value, the initial operation frequency of the feeder and the adjustment coefficient of the feeder, and dynamic balance is finally achieved, so that the workload of manual monitoring adjustment is reduced, the sand making building is ensured to work in a stable state for a long time, the working efficiency of the sand making building is improved, the normal operation of a bucket elevator motor is ensured, the motor of the broken sand making machine is indirectly protected, and the failure rate is reduced.
The processor provided in this embodiment of the present application may implement each process of the above embodiment of the automatic feeding adjustment control method, and may achieve the same technical effects, so that repetition is avoided, and no description is repeated here.
Readable storage media include computer readable storage media such as computer readable memory ROM, random access memory RAM, magnetic or optical disks, and the like.
As shown in fig. 13, 14, 15, 16, 17 and 18, embodiments of the fifth aspect of the present application provide a sand making building 50 including an automatic feed adjustment control system 10 as in any of the embodiments described above and/or an automatic feed adjustment control system 20 as in any of the embodiments described above and/or a readable storage medium as in any of the embodiments described above.
The sand making building 50 provided according to the embodiments of the present application includes the automatic feed adjustment control system 10 and/or the automatic feed adjustment control system 20 and/or the readable storage medium of any of the embodiments described above, and thus has all the advantages of the automatic feed adjustment control system 10 and/or the automatic feed adjustment control system 20 and/or the readable storage medium of any of the embodiments described above, and will not be described again herein. Wherein the sand making building 50 includes a bucket 510 and a feeder 520.
As shown in fig. 7, fig. 8, fig. 9, fig. 10, fig. 11 and fig. 12, according to the automatic feeding adjustment control method provided by a specific embodiment of the present application, the current signal change of the bucket elevator device is planned to be collected by the PLC, which is equivalent to obtaining the load of the bucket elevator 510, and then by comparing with the design load of the bucket elevator rating, it can be calculated whether the bucket elevator 510 can still transport more raw materials, according to the judgment after comparison, the variable frequency given value of the feeder 520 in the next period is determined by PI calculation adjustment in the PLC, the feeding speed of the feeder 520 is changed, the given value is adjusted by continuous comparison of one period, the control of the feeder 520 is changed into the closed-loop speed control mode, and finally a dynamic balance is achieved, and the maximum efficiency of the sand making building 50 can be achieved. The workload of manual monitoring and adjustment is reduced, and the possibility of errors in manual operation and adjustment is also reduced.
The closed speed loop of the feeder 520 is not directly used for collecting the speed feedback, but is converted into a speed feedback signal through the bucket current to be fed to the frequency converter of the feeder 520, so that the equilibrium state cannot be reached once, the closed loop needs to be adjusted to the equilibrium state gradually, before the scheme is implemented, two points need to be clear, the first point is that the bucket current is increased along with the increase of the frequency of the feeder 520, and the second point is that the current change of the bucket 510 and the change of the frequency of the feeder are in a linear relationship under the ideal premise. In actual operation, the two are not in absolute linear relation and possibly approach to S-type variation due to interference of external factors including sand mill, friction and the like, but are in dynamic adjustment, and one-time in-place is not needed, so that the linear relation can be assumed, the given value of the next stage is conveniently calculated, and the given value is continuously adjusted until the equilibrium value is reached.
According to the capacity of a bucket elevator motor, a target value of current during bucket elevator stabilization can be set on an interface of an industrial personal computer, for example, rated current of the bucket elevator motor is 85A, bucket elevator current is required to be stabilized at 80A during stabilization, the target current value of bucket elevator is set at 80A (Ia) on the interface of the industrial personal computer, when the sand manufacturing building 50 is operated, the operation frequency of the feeder 520 is initially set (Fi is smaller than power frequency, the power frequency of the feeder is 50Hz, the feeder is set to be unable to perform over-frequency operation, so that the highest operation frequency is 50 Hz), at the moment, when the current of bucket elevator 510 is Ib during operation of the sand manufacturing building 50, under normal conditions, ib < Ia, the frequency theoretical value of stable operation of the feeder 520 is set to be Fs, according to a linear relation, a mathematical model (Ia-Ib)/Ia= (50-Fs)/50, theoretical stable frequency Fs=50 XIb/Ia) can be calculated, and as the stable state is unlikely to be adjusted in place, the system is repeatedly oscillated, the system is required to be gradually adjusted, the time is required to be gradually, the time is not over-stable until the current reaches the stable state K is less than the stable state, and reaches the stable state K=0, and the stable state is shorter than the stable state; when the initial frequency is Ib not less than Ia, the frequency of the feeder is manually adjusted to enable the feeder to return to the state of Ib less than Ia, and then a program in the PLC automatically starts an adjusting stage of automatic feeding of the feeder, so that a stable sand making process is dynamically maintained. The embodiment can ensure that the sand making building 50 works in a stable state for a long time, and the maximum working efficiency of the sand making building 50 is exerted to reach the maximum sand making amount. The normal operation of the bucket elevator is ensured, the motor of the crushing sand making machine is indirectly protected to a certain extent, and the failure rate is reduced.
In this application, the terms "first," "second," "third," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or module in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (10)
1. An automatic feed adjustment control method for a sand making building, the sand making building including a bucket elevator and a feeder, the automatic feed adjustment control method comprising:
acquiring a target current value of the bucket, an initial operating frequency of the feeder and an adjustment coefficient of the feeder;
acquiring an operation current value of the bucket when the sand making building operates;
and adjusting the feeding speed of the feeder according to the target current value of the bucket, the initial running frequency of the feeder, the adjustment coefficient of the feeder and the running current value of the bucket.
2. The automatic feed adjustment control method according to claim 1, wherein the adjusting the feed speed of the feeder according to the target current value of the bucket, the initial operating frequency of the feeder, the feeder adjustment coefficient, and the operating current value of the bucket specifically includes:
judging whether the running current value is smaller than the target current value;
if yes, obtaining the stable operation frequency of the feeder according to the target current value and the operation current value;
and dynamically adjusting the operation frequency of the feeder according to the stable operation frequency of the feeder, the initial operation frequency of the feeder and the adjustment coefficient of the feeder.
3. The automatic feed adjustment control method according to claim 2, wherein the adjusting the feed speed of the feeder according to the target current value of the bucket, the initial operating frequency of the feeder, the feeder adjustment coefficient, and the operating current value of the bucket further comprises:
judging whether the running current value is smaller than the target current value;
if not, the operation frequency of the feeder is adjusted to enable the operation current value to be smaller than the target current value, the stable operation frequency of the feeder is obtained according to the target current value and the operation current value, and the operation frequency of the feeder is dynamically adjusted according to the stable operation frequency of the feeder, the initial operation frequency of the feeder and the adjustment coefficient of the feeder.
4. The automatic feed adjustment control method according to claim 3, wherein the dynamically adjusting the operation frequency of the feeder according to the stable operation frequency of the feeder, the initial operation frequency of the feeder and the feeder adjustment coefficient specifically comprises:
obtaining a variable frequency given value according to the stable operation frequency of the feeder, the initial operation frequency of the feeder and the adjustment coefficient of the feeder;
and feeding the frequency conversion set value back to a frequency converter of the feeder so as to control the motor of the feeder to work.
5. The automatic feed adjustment control method according to claim 2, characterized in that,
the calculation formula of the stable operation frequency of the feeder is as follows:
Fs=50×Ib/Ia；
wherein Fs is the stable operating frequency of the feeder, ib is the operating current value, and Ia is the target current value.
6. The automatic feed adjustment control method according to claim 4, characterized in that,
the calculation formula of the variable frequency given value is as follows:
Fo=Fi+K（Fs-Fi）；0<K<1
wherein Fo is the variable frequency given value, fs is the stable operation frequency of the feeder, fi is the initial operation frequency of the feeder, and K is the adjustment coefficient of the feeder.
7. An automatic feed adjustment control system, comprising:
a first acquisition module (110) for acquiring a target current value of the bucket, an initial operation frequency of the feeder and an adjustment coefficient of the feeder;
the second acquisition module (120) is used for acquiring the operation current value of the bucket when the sand making building operates;
and the adjusting module (130) is used for adjusting the feeding speed of the feeder according to the target current value, the initial running frequency of the feeder, the feeder adjusting coefficient and the running current value.
8. An automatic feed adjustment control system, comprising:
a memory (300) and a processor (400), wherein the memory (300) has stored thereon a program or instructions executable on the processor (400), the processor (400) implementing the steps of the automatic feed adjustment control method according to any one of claims 1 to 6 when executing the program or instructions.
9. A readable storage medium having stored thereon a program or instructions, which when executed by a processor, implement the steps of the automatic feed adjustment control method of any one of claims 1 to 6.
10. A sand making building, comprising:
the automatic feed adjustment control system of claim 7; and/or
The automatic feed adjustment control system of claim 8; and/or
The readable storage medium of claim 9.
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| CN202310545189.1A CN116280897A (en) | 2023-05-16 | 2023-05-16 | Automatic feeding adjustment control method and system, storage medium and sand making building |
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| CN202310545189.1A CN116280897A (en) | 2023-05-16 | 2023-05-16 | Automatic feeding adjustment control method and system, storage medium and sand making building |
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