CN114959144A - Weighing compensation method and system - Google Patents
Weighing compensation method and system Download PDFInfo
- Publication number
- CN114959144A CN114959144A CN202210687315.2A CN202210687315A CN114959144A CN 114959144 A CN114959144 A CN 114959144A CN 202210687315 A CN202210687315 A CN 202210687315A CN 114959144 A CN114959144 A CN 114959144A
- Authority
- CN
- China
- Prior art keywords
- value
- signal
- weighing
- error
- electromagnetic valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005303 weighing Methods 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title claims abstract description 56
- 238000007599 discharging Methods 0.000 claims abstract description 49
- 239000000463 material Substances 0.000 claims description 51
- 230000008859 change Effects 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000003111 delayed effect Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 description 2
- 239000002801 charged material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/18—Bell-and-hopper arrangements
- C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Abstract
The application provides a weighing compensation method and system, including: initializing; starting a feeding process to obtain a full bucket value; starting a discharging process to obtain a bucket empty value; calculating residual vibration quantity, furnace feeding quantity, current error and total error; judging whether the total error exceeds the upper and lower error limits; and recalculating the control value and repeating the steps. The weighing compensation method simplifies the procedure of weighing compensation, has good compensation effect, modularizes the procedure, and only needs to call a program block and set variables such as each set value, a first coefficient, a second coefficient, a third coefficient, an upper error limit and a lower error limit of a corresponding weighing hopper when in use. The modularization processing only needs to master the function of the module, thereby facilitating the programming and debugging and reducing the error rate.
Description
Technical Field
The application relates to the technical field of metallurgical feeding weighing compensation, in particular to a weighing compensation method and system.
Background
The weighing hopper is widely used in the metallurgical industry and other industrial fields, and plays an important role as a metering device in the iron-making field. The ore feeding of the blast furnace adopts a weighing hopper mode, and meanwhile, along with the improvement of computer technology, the application of a secondary machine in a blast furnace system is more and more common, which also has comprehensive and profound influence on the control mode of the ore feeding.
When a blast furnace is charged, each weighing hopper generates errors in the discharging process, and the compensation value of each weighing hopper needs to be calculated through a complicated program, so that various charged materials are kept in a certain proportion, and the maximum iron-making benefit is achieved. However, each weighing hopper is calculated separately in the program, which makes the program more complicated, makes reading the program more difficult, and makes the possibility of program error greater.
Disclosure of Invention
The application provides a weighing compensation method and a weighing compensation system, which are used for solving the problems that a compensation program is complicated, the compensation program is difficult to read, and the possibility of error of the compensation program is high.
In a first aspect, the present application provides a weighing compensation method, comprising: when an initialization signal is received, acquiring a set value and a control value; when a material conveying starting signal is received, sending a material feeding electromagnetic valve opening signal to a material feeding electromagnetic valve to obtain a full bucket value; when a discharging start signal is received, sending a discharging electromagnetic valve opening signal to a discharging electromagnetic valve to obtain a bucket empty value; calculating residual vibration quantity, wherein the residual vibration quantity is equal to the full bucket value minus a control value; calculating the charge amount, wherein the charge amount is equal to the full value minus the empty value; calculating the error of this time, wherein the error of this time is equal to the subtraction of the furnace charge from the set value; calculating a total error, wherein the total error is the sum of the last total error and the current error; when the total error is smaller than the upper error limit or larger than the lower error limit, giving the total error to a real-time error; when the total error is greater than or equal to the upper error limit or the total error is less than or equal to the lower error limit, giving the upper error limit or the lower error limit to the real-time error; and recalculating a control value, wherein the control value is equal to the set value plus the real-time error minus the residual vibration.
Optionally, when the initialization signal is received, the step of obtaining the set value and the control value includes: when an initialization signal is received, acquiring an input set value; setting the control value as the product of a first coefficient and a set value, wherein the first coefficient is between 0.9 and 1; setting the result of subtracting the control value from the set value as the residual vibration quantity; initializing the weighing value to zero; and setting the furnace charging amount, the current error, the total error and the real-time error to be zero.
Optionally, when receiving a material conveying start signal, sending a feeding solenoid valve opening signal to the feeding solenoid valve, and obtaining a full bucket value includes: when a material conveying starting signal is received, sending a material feeding electromagnetic valve opening signal to a material feeding electromagnetic valve; when the weighing value is larger than the product of a second coefficient and the control value, generating a bucket non-empty signal, wherein the second coefficient is between 0 and 0.5; when the weighing value is greater than or equal to the control value, sending a closing signal of the feeding electromagnetic valve to the feeding electromagnetic valve; when a non-empty signal of the hopper is detected and the weighing value is stable for a preset time and does not change, generating a feeding completion signal; and when a feeding completion signal is detected, giving a weighing value to a full bucket value to obtain the full bucket value, and generating a discharging start signal.
Optionally, when the unloading start signal is received, the unloading solenoid valve opening signal is sent to the unloading solenoid valve, and the step of obtaining the bucket empty value includes: when a discharging start signal is detected, sending a discharging electromagnetic valve opening signal to a discharging electromagnetic valve; when the weighing value is smaller than the product of a third coefficient and the control value, generating a hopper non-full signal, wherein the third coefficient is between 0.5 and 1; when the weighing value is zero or after delaying for a preset time, sending a closing signal of the discharging electromagnetic valve to the discharging electromagnetic valve; when a hopper non-full signal is detected and the weighing value is stable and does not change within a preset time, generating a discharging completion signal; and when the unloading completion signal is detected, giving the weighing value to the bucket empty value to obtain the bucket empty value.
Optionally, the weighing compensation method further includes: when a manual adjustment set value signal is received, the received input value is assigned to the set value.
Optionally, the weighing compensation method further includes: when the weighing value compensation signal is received, the received input value is used for zeroing.
Optionally, the weighing compensation method further includes: and transmitting the charge amount to a secondary machine, and sending a material transmission completion signal to the secondary machine.
In a second aspect, the present application provides a weighing compensation system comprising: a weighing hopper configured to weigh a material; a feed solenoid valve configured to control material into the weigh hopper; a discharge solenoid configured to control discharge of material to the conveyor belt; a conveyor configured to transport the material into the blast furnace; a controller configured to perform the method of the first aspect of the present application.
The application provides a weighing compensation method and system, including: initializing; starting a feeding process to obtain a full bucket value; starting a discharging process to obtain a bucket empty value; calculating residual vibration quantity, furnace feeding quantity, current error and total error; judging whether the total error exceeds the upper and lower error limits; and recalculating the control value and repeating the steps. The weighing compensation method simplifies the procedure of weighing compensation, has good compensation effect, modularizes the procedure, and only needs to call a program block and set variables such as each set value, a first coefficient, a second coefficient, a third coefficient, an upper error limit and a lower error limit of a corresponding weighing hopper when in use. The modularization processing only needs to master the function of the module, thereby facilitating the program compiling and debugging and reducing the error rate.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a weighing compensation method according to the present application;
FIG. 2 is a schematic diagram of a weighing compensation system according to the present application;
FIG. 3 is a schematic diagram illustrating a process for obtaining a fill-full value according to the present application;
fig. 4 is a schematic flow chart of obtaining the bucket empty value according to the present application.
Illustration of the drawings:
wherein, the method comprises the steps of 1-weighing hopper, 2-feeding electromagnetic valve, 3-discharging electromagnetic valve, 4-blast furnace and 5-conveyor belt.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.
A weigh hopper is a type of under-tank weighing apparatus, generally comprising: the three sensors are arranged outside the bucket body and form an angle of 120 degrees with each other, so that a stable stress plane is formed. The sensor is adhered with a resistance wire strain gauge, and when the sensor deforms under stress (pulling force or pressure), the strain gauge adhered to the sensor also deforms correspondingly, namely elongates or shortens. The strain gauge attached to the sensor can form an electric bridge, then an amplifier and an indicator are connected, when the strain gauge deforms, the resistance value of the strain gauge is changed, the electric bridge loses balance, a tiny voltage signal is output and enters an amplifying instrument, so that the mechanical quantity change is converted into the electrical parameter change, and the weighed value is reflected by the instrument, namely the weighing value.
The ore feeding of the blast furnace adopts a weighing hopper mode, the feeding of the weighing hopper is controlled by a feeding electromagnetic valve, and the discharging of the weighing hopper is controlled by a discharging electromagnetic valve. Because the feeding electromagnetic valve and the discharging electromagnetic valve have certain time delay when being opened and closed, namely the valves are not immediately completed when being opened or closed. Therefore, the residual materials are inevitably generated, so that when the blast furnace is charged, each weighing hopper generates errors in the discharging process, and the compensation value needs to be calculated through a complicated program, so that various charged materials are kept in a certain proportion, and the maximum iron-making benefit is achieved. However, each scale bucket is calculated independently in the program, which makes the program more complicated, makes it more difficult to read the program, and increases the possibility of program error.
In order to solve the above problems, the present application provides a weighing compensation method and system.
As shown in fig. 1, the present application provides a weighing compensation method, comprising the steps of:
s100: when the initialization signal is received, the system is initialized, and the set value and the control value are obtained.
The initialization signal is sent when the system is just powered on or an initialization button is manually pressed. The system is initialized in order to reset the various mechanisms of the system and to assign initial values to the various values in the system. The set value, which is a weight value for feeding the blast furnace 4, is manually input. The control value is a threshold value at which the system controls the feed solenoid valve 2 to close.
In one exemplary embodiment, initializing the system, and obtaining the set point and the control value comprises: when an initialization signal is received, acquiring an input set value; setting the control value as the product of a first coefficient and a set value, wherein the first coefficient is between 0.9 and 1; setting the result of subtracting the control value from the set value as the residual vibration quantity; initializing the weighing value to zero; and setting the furnace charging amount, the current error, the total error and the real-time error to be zero.
Illustratively, the initial control value is set to a set value of 0.96 times; the result of subtracting the control value from the set value is set as the initial residual oscillation amount, which is an optimized scheme obtained through many experimental summaries, and the first coefficient is set as 0.96, so that the setting is favorable for later compensation without generating too large deviation.
S200: when receiving a material conveying starting signal, sending a feeding electromagnetic valve opening signal to the feeding electromagnetic valve 2, starting a feeding process and obtaining a full bucket value.
When the blast furnace 4 needs to be charged, a material conveying starting signal is sent. And starting a feeding process after receiving the material conveying starting signal, wherein the feeding process is to load materials into the weighing hopper 1.
In an exemplary embodiment, as shown in fig. 3, the step of sending a feeding solenoid valve opening signal to the feeding solenoid valve when receiving the material conveying start signal, and obtaining the fill-up value includes:
s201: when receiving the material conveying starting signal, sending a feeding electromagnetic valve opening signal to the feeding electromagnetic valve 2.
And a feeding electromagnetic valve opening signal is used for controlling the feeding electromagnetic valve 2 to be opened, the material enters the weighing hopper 1, and the weighing value begins to increase.
S202: and when the weighing value is larger than the product of a second coefficient and the control value, generating a bucket non-empty signal, wherein the second coefficient is between 0 and 0.5.
In an example, the second coefficient is set to 0.4, i.e. when the weighing value >0.4 control value, a bucket non-empty signal is generated. The bucket non-empty signal indicates that it is currently in the feed flow path, and is used to prevent the process from making mistakes due to other unexpected reasons.
S203: and when the weighing value is greater than or equal to the control value, sending a closing signal of the feeding electromagnetic valve to the feeding electromagnetic valve 2.
When the weighing value is larger than or equal to the control value, the material in the weighing hopper 1 reaches the required amount, and a feeding electromagnetic valve closing signal is sent to control the feeding electromagnetic valve 2 to be closed and stop feeding into the weighing hopper 1.
S204: and when the non-empty signal of the hopper is detected and the weighing value is stable for a preset time and does not change, generating a feeding completion signal.
For example, when the non-empty hopper signal is detected and the weighing value is stable for 10s and does not change, it indicates that the feeding solenoid valve 2 is completely closed and the remainder is discharged, and then a feeding completion signal is generated for determining that the current weighing value is the full hopper value.
S205: and when a feeding completion signal is detected, giving a weighing value to the full bucket value to obtain the full bucket value.
S206: and generating a discharging start signal.
And the unloading starting signal is used for starting the unloading process.
S300: and when the unloading starting signal is received, sending an unloading electromagnetic valve opening signal to the unloading electromagnetic valve 3, starting an unloading process and obtaining a bucket empty value.
The discharging process is that the weighing hopper 1 discharges the materials onto the conveyor belt 5, and the materials are conveyed to the blast furnace through the conveyor belt 5.
In an exemplary embodiment, as shown in fig. 4, the step of sending a discharge solenoid open signal to the discharge solenoid when receiving a discharge start signal, and obtaining the bucket empty value includes:
s301: when the discharge start signal is detected, a discharge solenoid valve opening signal is sent to the discharge solenoid valve 3.
And the opening signal of the discharging electromagnetic valve is used for controlling the opening of the discharging electromagnetic valve 3, the material starts to be discharged from the weighing hopper 1 onto the conveyor belt 5, and the weighing value starts to be reduced.
S302: and when the weighing value is smaller than the product of a third coefficient and the control value, generating a hopper non-full signal, wherein the third coefficient is between 0.5 and 1.
In the example, the third coefficient is set to 0.8, i.e. when the weighing value is <0.8 × control value, a not-full-bucket signal is generated. The hopper non-full signal indicates that the hopper is currently in the unloading process and is used for preventing the program from generating errors due to other unexpected reasons.
S303: and when the weighing value is zero or the preset time is delayed, sending a closing signal of the discharging electromagnetic valve to the discharging electromagnetic valve 3.
For example, when the weighing value is 0 or after a delay of 60s, which indicates that the material in the weighing hopper 1 has been discharged or the material cannot be discharged, a discharge solenoid valve closing signal is sent to control the discharge solenoid valve 3 to close and stop the weighing hopper 1 from discharging continuously.
S304: and when the hopper is not full and the weighing value is stable for a preset time and does not change, generating a discharging completion signal.
For example, when the hopper non-full signal is received and the weighing value is stable for 10s and does not change, it indicates that the discharging solenoid valve 3 is completely closed and the remaining material is discharged, and then a discharging completion signal is generated for determining that the current weighing value is the hopper empty value.
S305: and when the unloading completion signal is detected, giving the weighing value to the bucket empty value to obtain the bucket empty value.
S400: and calculating residual vibration quantity, furnace feeding quantity, current error and total error.
Calculating residual vibration quantity, wherein the calculation formula of the residual vibration quantity is as follows: and y is m-c, wherein y is the residual vibration quantity, m is the full bucket value, and c is the control value.
Calculating the charge amount, wherein the charge amount is calculated according to the following formula: and l is m-k, wherein l is the charging amount, m is the full value of the hopper, and k is the empty value of the hopper.
Calculating the error of this time, wherein the calculation formula of the error of this time is as follows: and bw is s-l, wherein bw is the error of the time, s is a set value, and l is the charge amount.
And calculating a total error, wherein the total error is the sum of the last total error and the current error.
S500: and judging whether the total error exceeds the upper and lower error limits.
When the total error is smaller than the upper error limit or larger than the lower error limit, giving the total error to a real-time error;
when the total error is greater than or equal to the upper error limit or the total error is less than or equal to the lower error limit, giving the upper error limit or the lower error limit to the real-time error; namely, when the total error is greater than or equal to the upper error limit, the upper error limit is assigned to the real-time error, and when the total error is less than or equal to the lower error limit, the lower error limit is assigned to the real-time error.
And when the total error does not exceed the upper error limit and the lower error limit, the real-time error is set to be zero.
S600: recalculating a control value, wherein the calculation formula of the control value is as follows: and c is s + sw-y, wherein c is a control value, s is a set value, sw is a real-time error, and y is residual vibration.
When the material conveying starting signal is received, the recalculated control value is used, and the steps are repeated.
In an exemplary embodiment, the weighing compensation method further includes: when a manual adjustment set value signal is received, the received input value is assigned to the set value.
When needed, a manual adjusting button can be pressed to manually adjust the set value, so that the system is convenient to overhaul and debug.
In an exemplary embodiment, the weighing compensation method further includes: when the weighing value compensation signal is received, the received input value is used for zeroing.
When the system is needed, a manual adjusting button can be pressed, the manual symmetric quantity value is zeroed, and the system is convenient to overhaul and debug.
In an exemplary embodiment, the weighing compensation method further includes: and transmitting the charge amount to a secondary machine, and sending a material transmission completion signal.
And transmitting the charge amount to a secondary machine for monitoring the charge amount by other systems. And sending a material transmission completion signal for explaining the end of the material transmission process.
Specifically, the procedure of the weighing compensation method is described by taking as an example a set value of 100, a first coefficient of 0.96, a second coefficient of 0.4, a third coefficient of 0.8, an upper error limit of 5, and a lower error limit of-5, as shown in table 1:
TABLE 1
Initially:
when the initialization signal is received, the set value is 100, the control value is 96, the residual vibration amount is 4, and the bucket empty value, the bucket full value, the furnace charging amount, the current error, the total error and the real-time error are all 0.
Once:
and when receiving the material conveying starting signal, sending a feeding electromagnetic valve opening signal.
When the weighing value is >38.4, a bucket non-empty signal is generated.
When the weighing value is more than or equal to 96, a feeding electromagnetic valve closing signal is sent.
And when the non-empty signal of the hopper is detected and the weighing value is stable for 10s and does not change, generating a feeding completion signal. When a feed complete signal is detected, the fill level is 105.
And generating a discharging start signal, and sending a discharging electromagnetic valve opening signal when the discharging start signal is detected.
When the weighing value is <76.8, a not-full bucket signal is generated.
And when the weighing value is 0 or after 60s of delay, sending a closing signal of the discharging electromagnetic valve.
And when the hopper is detected to be not full and the weighing value is stable for 10s and does not change, generating a discharging completion signal.
When the unloading completion signal is detected, the bucket null value is 4.
And calculating residual vibration quantity, wherein the residual vibration quantity is 9.
And (4) calculating the charge amount, wherein the charge amount is 101.
And calculating the error of the current time, wherein the error of the current time is-1.
The total error was calculated to be-1.
And when the total error is smaller than the upper error limit or larger than the lower error limit, the real-time error is-1. The control value is recalculated, the control value being 90.
And transmitting the charge amount to a secondary machine, and sending a material transmission completion signal.
And (2) twice:
and when receiving the material conveying starting signal, sending a feeding electromagnetic valve opening signal.
When the weighing value >36, a bucket non-empty signal is generated.
And when the weighing value is more than or equal to 90, sending a closing signal of the feeding electromagnetic valve.
And when the non-empty signal of the hopper is detected and the weighing value is stable for 10s and does not change, generating a feeding completion signal.
When a feed completion signal is detected, the fill level is 101.
And generating a discharging start signal, and sending a discharging electromagnetic valve opening signal when the discharging start signal is detected.
When the weigh value is <72, a not-full bucket signal is generated.
And when the weighing value is 0 or after 60s of delay, sending a closing signal of the discharging electromagnetic valve.
And when the hopper is detected to be not full and the weighing value is stable for 10s and does not change, generating a discharging completion signal.
When the unloading completion signal is detected, the bucket null value is 7.
And calculating the residual vibration quantity, wherein the residual vibration quantity is 11.
And calculating the charge amount, wherein the charge amount is 94.
And calculating the error of this time, wherein the error of this time is 6.
The total error was calculated to be 5.
And when the total error is greater than or equal to the upper error limit or the total error is less than or equal to the lower error limit, the real-time error is 5.
The control value is recalculated, 94.
And transmitting the charge amount to a secondary machine, and sending a material transmission completion signal.
Three to ten times are the same as the above steps. As can be seen from table 1, the weighing compensation method simplifies the program of the weighing compensation, has a good compensation effect, and modularizes the program, and only needs to call a program block to set variables such as each set value, the first coefficient, the second coefficient, the third coefficient, the upper error limit, and the lower error limit of the corresponding weighing hopper. The modular processing only needs to master the function of the module, thereby facilitating the programming and debugging, reducing the possibility of errors and having good popularization value.
The present application provides a weighing compensation system, as shown in fig. 2, comprising: a weighing hopper 1 configured to weigh a material; a feed solenoid valve 2 configured to control the material into the weigh hopper 1; a discharge solenoid valve 3 configured to control the discharge of material to the conveyor belt 5; a conveyor belt 5 configured to transport the material into the blast furnace 4; a controller configured to perform the method in the above embodiments.
The application provides a weighing compensation method and system, including: initializing; starting a feeding process to obtain a full bucket value; starting a discharging process to obtain a bucket empty value; calculating residual vibration quantity, furnace feeding quantity, current error and total error; judging whether the total error exceeds the upper and lower error limits; and recalculating the control value and repeating the steps. The weighing compensation method simplifies the weighing compensation program, has good compensation effect, modularizes the program, and only needs to call a program block and set variables such as each set value, a first coefficient, a second coefficient, a third coefficient, an upper error limit and a lower error limit of the corresponding weighing hopper when in use. The modularization processing only needs to master the function of the module, thereby facilitating the programming and debugging and reducing the error rate.
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (8)
1. A method of compensating for weighing, comprising:
when an initialization signal is received, acquiring a set value and a control value;
when a material conveying starting signal is received, sending a material feeding electromagnetic valve opening signal to a material feeding electromagnetic valve to obtain a full bucket value;
when a discharging start signal is received, sending a discharging electromagnetic valve opening signal to a discharging electromagnetic valve to obtain a bucket empty value;
calculating residual vibration quantity, wherein the residual vibration quantity is equal to the full bucket value minus a control value;
calculating the charge amount, wherein the charge amount is equal to the full value minus the empty value;
calculating the error of this time, wherein the error of this time is equal to the subtraction of the furnace charge from the set value;
calculating a total error, wherein the total error is the sum of the last total error and the current error;
when the total error is smaller than the upper error limit or larger than the lower error limit, giving the total error to a real-time error;
when the total error is greater than or equal to the upper error limit or the total error is less than or equal to the lower error limit, giving the upper error limit or the lower error limit to the real-time error;
and recalculating a control value, wherein the control value is equal to the set value plus the real-time error minus the residual vibration quantity.
2. The weighing compensation method of claim 1, wherein the step of obtaining the set value and the control value when the initialization signal is received comprises:
when an initialization signal is received, acquiring an input set value;
setting the control value as the product of a first coefficient and a set value, wherein the first coefficient is between 0.9 and 1;
setting the result of subtracting the control value from the set value as the residual vibration quantity;
initializing the weighing value to zero;
and setting the furnace charging amount, the current error, the total error and the real-time error to be zero.
3. The weighing compensation method of claim 1, wherein the step of sending a feeding solenoid valve opening signal to the feeding solenoid valve when receiving the material conveying start signal to obtain the full value comprises:
when a material conveying starting signal is received, sending a material feeding electromagnetic valve opening signal to a material feeding electromagnetic valve;
when the weighing value is larger than the product of a second coefficient and the control value, generating a bucket non-empty signal, wherein the second coefficient is between 0 and 0.5;
when the weighing value is greater than or equal to the control value, sending a closing signal of the feeding electromagnetic valve to the feeding electromagnetic valve;
when a non-empty signal of the hopper is detected and the weighing value is stable for a preset time and does not change, generating a feeding completion signal;
and when a feeding completion signal is detected, giving a weighing value to a full bucket value to obtain the full bucket value, and generating a discharging start signal.
4. The weighing compensation method according to claim 1, wherein the step of sending a discharge solenoid valve opening signal to the discharge solenoid valve when receiving a discharge start signal, and obtaining the bucket empty value comprises:
when a discharging start signal is detected, sending a discharging electromagnetic valve opening signal to a discharging electromagnetic valve;
when the weighing value is smaller than the product of a third coefficient and the control value, generating a hopper non-full signal, wherein the third coefficient is between 0.5 and 1;
when the weighing value is zero or after a preset time is delayed, sending a closing signal of the discharging electromagnetic valve to the discharging electromagnetic valve;
when a hopper non-full signal is detected and the weighing value is stable and does not change within a preset time, a discharging completion signal is generated;
and when the unloading completion signal is detected, giving the weighing value to the bucket empty value to obtain the bucket empty value.
5. The weighing compensation method according to claim 1, further comprising:
when a manual adjustment set value signal is received, the received input value is assigned to the set value.
6. The weighing compensation method according to claim 1, further comprising: when the weighing value compensation signal is received, the received input value is used for zeroing.
7. The weighing compensation method according to claim 1, further comprising: and transmitting the charge amount to a secondary machine, and sending a material transmission completion signal to the secondary machine.
8. A weighing compensation system, comprising:
a scale hopper configured to weigh a material;
a feed solenoid valve configured to control material into the weigh hopper;
a discharge solenoid configured to control discharge of material to the conveyor belt;
a conveyor configured to transport the material into the blast furnace;
a controller configured to perform the method of any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210687315.2A CN114959144B (en) | 2022-06-16 | 2022-06-16 | Weighing compensation method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210687315.2A CN114959144B (en) | 2022-06-16 | 2022-06-16 | Weighing compensation method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114959144A true CN114959144A (en) | 2022-08-30 |
| CN114959144B CN114959144B (en) | 2024-05-14 |
Family
ID=82964190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210687315.2A Active CN114959144B (en) | 2022-06-16 | 2022-06-16 | Weighing compensation method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114959144B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010064940A (en) * | 1999-12-20 | 2001-07-11 | 이구택 | Apparatus and method for detecting weight of hopper |
| JP2005024524A (en) * | 2003-07-04 | 2005-01-27 | Yamato Scale Co Ltd | Creep error compensation device and compensation method of weight signal |
| CN101963525A (en) * | 2009-07-23 | 2011-02-02 | 宝山钢铁股份有限公司 | Method for improving weighing precision of charging system and device thereof |
| KR20130047059A (en) * | 2011-10-31 | 2013-05-08 | 김옥자 | Measuring apparatus and method the same |
| CN103409571A (en) * | 2013-08-27 | 2013-11-27 | 中冶南方工程技术有限公司 | Charging bucket weighing differential fuzzy compensation system for serial bucket-type bell-less top |
| CN103438976A (en) * | 2013-07-18 | 2013-12-11 | 江苏联峰能源装备有限公司 | Novel rapid detection system and method of steel-making loading hopper scales |
| CN104949748A (en) * | 2014-03-31 | 2015-09-30 | 宝钢不锈钢有限公司 | Method for self-testing of electronic belt weighing in real-time and online way |
| US20160238436A1 (en) * | 2016-04-21 | 2016-08-18 | Caterpillar Inc. | Method of calibration of weighing systems |
| CN107797513A (en) * | 2016-08-31 | 2018-03-13 | 上海梅山钢铁股份有限公司 | The control method of weight reduction magazine discharging |
| CN109682447A (en) * | 2018-12-24 | 2019-04-26 | 徐州威卡电子控制技术有限公司 | A kind of weight of material Dynamic Weighting method in loading shovel |
| US20220268622A1 (en) * | 2019-07-31 | 2022-08-25 | Mettler-Toledo (Changzhou) Measurement Technology Ltd. | Hysteresis compensation method for a weighing device |
-
2022
- 2022-06-16 CN CN202210687315.2A patent/CN114959144B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010064940A (en) * | 1999-12-20 | 2001-07-11 | 이구택 | Apparatus and method for detecting weight of hopper |
| JP2005024524A (en) * | 2003-07-04 | 2005-01-27 | Yamato Scale Co Ltd | Creep error compensation device and compensation method of weight signal |
| CN101963525A (en) * | 2009-07-23 | 2011-02-02 | 宝山钢铁股份有限公司 | Method for improving weighing precision of charging system and device thereof |
| KR20130047059A (en) * | 2011-10-31 | 2013-05-08 | 김옥자 | Measuring apparatus and method the same |
| CN103438976A (en) * | 2013-07-18 | 2013-12-11 | 江苏联峰能源装备有限公司 | Novel rapid detection system and method of steel-making loading hopper scales |
| CN103409571A (en) * | 2013-08-27 | 2013-11-27 | 中冶南方工程技术有限公司 | Charging bucket weighing differential fuzzy compensation system for serial bucket-type bell-less top |
| CN104949748A (en) * | 2014-03-31 | 2015-09-30 | 宝钢不锈钢有限公司 | Method for self-testing of electronic belt weighing in real-time and online way |
| US20160238436A1 (en) * | 2016-04-21 | 2016-08-18 | Caterpillar Inc. | Method of calibration of weighing systems |
| CN107797513A (en) * | 2016-08-31 | 2018-03-13 | 上海梅山钢铁股份有限公司 | The control method of weight reduction magazine discharging |
| CN109682447A (en) * | 2018-12-24 | 2019-04-26 | 徐州威卡电子控制技术有限公司 | A kind of weight of material Dynamic Weighting method in loading shovel |
| US20220268622A1 (en) * | 2019-07-31 | 2022-08-25 | Mettler-Toledo (Changzhou) Measurement Technology Ltd. | Hysteresis compensation method for a weighing device |
Non-Patent Citations (2)
| Title |
|---|
| 高苗苗: "高炉上料称量自动补偿控制系统的设计与实现", 技术纵横, pages 66 - 67 * |
| 龚成龙: "高炉进料误差自动补偿控制系统", 电脑学习, no. 02 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114959144B (en) | 2024-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5670751A (en) | Bulk material weighing container with pressure feedback | |
| US7175048B2 (en) | Method and device for gravimetric dosing bulk material | |
| US3595328A (en) | Automatic batch weighing system | |
| CN102494753A (en) | Method for calibrating electronic belt scale | |
| EP0213524A2 (en) | Apparatus and method for feeding particulate material such as coal and other bulk materials | |
| CN114959144A (en) | Weighing compensation method and system | |
| CN113167536B (en) | Ore continuous feeding device | |
| EP1832856B1 (en) | Combination weigher | |
| JP6139763B1 (en) | Powder parallel blowing system and powder parallel blowing method | |
| US4630696A (en) | Apparatus and method for automatic system calibration to provide enhanced resolution in computerized weighing systems | |
| JP2003294519A (en) | Method for measuring amount of feed in continuous powder feeder | |
| WO2021029327A1 (en) | Continuous ore-feeding apparatus | |
| JP5316961B2 (en) | Raw material weighing controller | |
| JP2002302707A (en) | Method for correcting influence coefficient applied into measured weight correction in parallel bunkers for bell-less blast furnace | |
| TWI796041B (en) | Dynamic Pressure Compensation Method for Weighing System of Blast Furnace Roof Bunker | |
| SU1123964A1 (en) | Device for automatically distributing flow of granular materials among charging apparatus | |
| CN212133804U (en) | High-precision micro-scale | |
| CN116605677A (en) | Intelligent graphite conveying system | |
| JP6812071B2 (en) | Powder parallel blowing system and powder parallel blowing method | |
| JPH05215595A (en) | Method for controlling amount of raw material weighing hopper to be taken out | |
| JPS6326036B2 (en) | ||
| JPS62156527A (en) | Method and device for weighing raw material of furnace top charging device | |
| SU1483277A1 (en) | Method of metering piece ferromagnetic materials | |
| CN111854914A (en) | Automatic scale calibration method for weighing system of ore bulk material loading building | |
| JPS63282026A (en) | Automatic control system for discharge speed of powder or granular material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |