CN116755381A - Batching control system and batching control method - Google Patents

Abstract

The embodiment of the invention provides a batching control system and a batching control method, and relates to the technical field of metallurgical industry production. The batching control system comprises a PLC control unit, a PLC control subunit, a plurality of disc feeders and weighing equipment, wherein each disc feeder comprises a motor and a frequency converter, the PLC control unit is used for sending control signals to the PLC control subunit, so that the PLC control subunit controls the target disc feeders and the target weighing equipment at the corresponding positions to start according to the control signals, the frequency converters of the target disc feeders are controlled to adjust the rotating speeds of the corresponding motors, the target disc feeders discharge coal to the target weighing equipment, and the target weighing equipment is controlled to transport and weigh the coal at a constant speed. The embodiment of the invention realizes a batching control system which is stable in batching, simple and convenient to operate and easy to maintain.

Description

Batching control system and batching control method

Technical Field

The invention relates to the technical field of metallurgical industry production, in particular to a batching control system and a batching control method.

Background

The traditional coke oven old zone batching system and the traditional coke oven new zone batching system have a plurality of defects: firstly, the control system architectures of the traditional coke oven old area batching system and the traditional coke oven new area batching system are respectively arranged in arrays, only one batching weight data acquisition, setting and monitoring HMI is adopted by adopting a control mode of combining PLC control with HMI, the running software is written by a provider through third party software (for example, VB), the provider packages and seals the HMI software in a specified hard disk, and once the hard disk damage system can not be repaired, the batching is stopped; secondly, the weighing instrument is placed on the control layer by the batching system, weighing data acquisition, speed control of the disc feeder and data interaction with the HMI through a serial port are required to be completed, and due to the fact that the weighing instrument is limited by a communication protocol, the weighing instrument is out of order, the universal weighing instrument cannot be replaced, and only the weighing instrument with the same type and high price can be adopted.

The accuracy of the coal proportioning obtained by the traditional coke oven old zone proportioning system and the traditional coke oven new zone proportioning system in working due to the defects is different from the advanced level of the same industry.

Disclosure of Invention

Accordingly, the present invention is directed to a dispensing control system and a dispensing control method, so as to realize a dispensing control system with stable dispensing, simple operation and easy maintenance.

In order to achieve the above object, the technical scheme adopted by the embodiment of the invention is as follows:

in a first aspect, an embodiment of the present invention provides a dispensing control system, including a PLC control unit, a PLC control subunit, a plurality of disc feeders, and weighing devices, where each of the disc feeders includes a motor and a frequency converter, each of the frequency converters is electrically connected to a corresponding motor, the PLC control unit is communicatively connected to the PLC control subunit, the PLC control unit is communicatively connected to each of the frequency converters, or the PLC control subunit is communicatively connected to each of the frequency converters, and each of the weighing devices is communicatively connected to the PLC control subunit;

the PLC control unit is used for sending a control signal to the PLC control subunit, so that the PLC control subunit controls the target disc feeder and the target weighing equipment at the corresponding position to start according to the control signal, controls the frequency converter of the target disc feeder to adjust the rotating speed corresponding to the motor, enables the target disc feeder to discharge coal to the target weighing equipment, and controls the target weighing equipment to transport and weigh the coal at a constant speed;

The PLC control subunit is used for controlling the target disc feeder and the target weighing equipment at the corresponding position to start according to the received control signal, controlling the frequency converter of the target disc feeder to adjust the rotating speed of the corresponding motor, enabling the target disc feeder to discharge coal to the target weighing equipment, and controlling the target weighing equipment to transport and weigh the coal at a constant speed;

each disc feeder is used for feeding coal to the weighing equipment at the corresponding position;

each weighing device is used for conveying and weighing coal at a constant speed, and sending current coal amount data obtained by weighing to the PLC control subunit, so that the PLC control subunit sends the current coal amount data to the PLC control unit for storage and data report generation.

In a second aspect, an embodiment of the present invention provides a dispensing control method, which is applied to the PLC control unit of the dispensing control system provided in the foregoing first aspect, where the PLC control unit is communicatively connected to the PLC control subunit in the dispensing control system, and the PLC control subunit is communicatively connected to each weighing device and each frequency converter of the disc feeder;

The method comprises the following steps:

acquiring proportioning data, water content data of coal materials and total dry coal amount data per hour as coal blending data, and acquiring coal blending flow data based on the coal blending data;

transmitting a control signal to the PLC control subunit based on the coal blending flow data, so that the PLC control subunit controls the target disc feeder and the target weighing equipment at the corresponding position to start according to the received control signal, controls the frequency converter of the target disc feeder to adjust the rotating speed corresponding to the motor, enables the target disc feeder to discharge coal to the target weighing equipment, and controls the target weighing equipment to transport and weigh the coal at a constant speed;

and acquiring the current coal amount data sent by the PLC control subunit, storing the current coal amount data and generating a data report.

In an alternative embodiment, the PLC control unit is communicatively connected to a frequency converter of each of the disk feeders, and the method further comprises:

judging whether the current coal amount data is smaller than a first preset value or not, and judging whether the current coal amount data is larger than a second preset value or not;

alarming when the current coal quantity data is smaller than a first preset value or larger than a second preset value;

Acquiring current continuous alarm time, and sending a linkage control signal to a frequency converter of the target disc feeder under the condition that the current continuous alarm time reaches preset alarm time so as to enable the frequency converter of the target disc feeder to adjust the corresponding motor to stop rotating.

In a third aspect, an embodiment of the present invention provides a dispensing control method, which is applied to the PLC control subunit of the dispensing control system provided in the foregoing first aspect, where the PLC control subunit is communicatively connected to the PLC control unit in the dispensing control system, and the PLC control subunit is communicatively connected to each weighing device in the dispensing control system and each frequency converter of the disc feeder;

the method comprises the following steps:

responding to a control signal sent by the PLC control unit, and controlling the target disc feeder and a target weighing device at a corresponding position to start;

controlling a frequency converter of the target disc feeder to adjust the rotating speed of the corresponding motor, so that the target disc feeder discharges coal to the target weighing equipment;

controlling the target weighing equipment to transport and weigh the coal at a constant speed;

and acquiring current coal amount data sent by the target weighing equipment, and sending the current coal amount data to the PLC control unit so that the PLC control unit stores the current coal amount data and generates a data report.

In an alternative embodiment, the batching control system further comprises a coal preparation transport mechanism and a PLC coal preparation control unit, wherein the coal preparation transport mechanism is in communication connection with the PLC control unit or the PLC coal preparation control unit, and each weighing device comprises a transport mechanism;

the step of responding to the control signal sent by the PLC control unit and controlling the starting of the target disc feeder and the target weighing equipment at the corresponding position comprises the following steps:

responding to a control signal sent by the PLC control unit, and determining a target weighing device from the weighing devices according to the control signal;

determining a disc feeder at a corresponding position according to the target weighing equipment to serve as a target disc feeder;

under the condition that the coal preparation transport mechanism is started, controlling the transport mechanism of the target weighing equipment to start according to a first starting time;

controlling the target disc feeder to start according to a second starting time, wherein the second starting time is longer than the first starting time;

and returning to the step of determining a target weighing apparatus from each weighing apparatus according to the control signal to control the starting of the target circular feeder at a second starting time until all the transport mechanisms of the target weighing apparatuses and the corresponding target circular feeders are started.

In an alternative embodiment, the PLC control subunit stores frequency converter initial speed data, and the PLC control subunit includes a PID regulator;

the step of controlling the frequency converter of the target disc feeder to adjust the rotating speed corresponding to the motor comprises the following steps:

under the condition that the target disc feeder is started, controlling a frequency converter of the target disc feeder to adjust the rotating speed corresponding to the motor based on the initial speed data of the frequency converter, and recording the current time;

and under the condition that the current time reaches the preset adjusting time, controlling a frequency converter of the target disc feeder to adjust the rotating speed of the corresponding motor based on the speed data output by the PID regulator.

In an alternative embodiment, the method further comprises:

screening the current coal amount data, and taking the screened current coal amount data as data to be input;

and inputting the data to be input into the PID regulator so that the PID regulator outputs the speed data according to the data to be input.

In an alternative embodiment, the method further comprises:

judging whether the current coal amount data is smaller than a first preset value or not, and judging whether the current coal amount data is larger than a second preset value or not;

Alarming when the current coal quantity data is smaller than a first preset value or larger than a second preset value;

acquiring current continuous alarm time, and sending a linkage control signal to a frequency converter of the target disc feeder under the condition that the current continuous alarm time reaches preset alarm time so as to enable the frequency converter of the target disc feeder to adjust the corresponding motor to stop rotating.

In an alternative embodiment, the method further comprises:

under the condition that the motor of at least one disc feeder stops rotating, stopping the disc feeder corresponding to the motor stopping rotating as a target;

taking the time of stopping rotation of the motor of the target shutdown disc feeder as the current shutdown time;

and controlling the weighing equipment at the corresponding position of the target shutdown disc feeder to stop running according to a first stop time, wherein the first stop time is longer than the current stop time.

In an alternative embodiment, the weighing device is a belt scale.

The beneficial effects of the embodiment of the invention include, for example:

according to the batching control system and the batching control method provided by the embodiment of the invention, the weighing equipment is arranged on the equipment layer, namely, the weighing equipment is only used as a weighing data collector, the current coal amount data obtained by weighing is sent to the PLC control subunit for processing, the PLC control (the PLC control unit and the PLC control subunit) is used as the main control of the whole system, the defect that the traditional batching system in the old area of the coke oven and the traditional batching system in the new area of the coke oven both use the PLC control and combine with the HMI is overcome, the unification of the communication mode is realized, meanwhile, the weighing equipment is unification to be constant speed, and the speed regulation is only carried out on the disc feeder, so that the whole batching of the batching control system is stable, the operation is simple and convenient, and the maintenance is easy.

In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1a illustrates an exemplary architecture diagram of a conventional coke oven boss batching system provided by embodiments of the present invention;

FIG. 1b illustrates an exemplary architecture diagram of a conventional coke oven fresh zone batching system provided by embodiments of the present invention;

FIG. 2a illustrates an exemplary architecture diagram of a compounding control system provided by an embodiment of the present invention;

FIG. 2b illustrates a second exemplary architecture diagram of a compounding control system provided in accordance with an embodiment of the present disclosure;

FIG. 3 is a schematic flow chart of a method for controlling ingredients according to an embodiment of the present invention;

FIG. 4 is a second flow chart of a method for controlling ingredients according to the embodiment of the present invention;

FIG. 5 is a flow chart of another method for controlling ingredients according to an embodiment of the present invention;

FIG. 6 is a second flow chart of another method for controlling ingredients according to the embodiment of the present invention;

FIG. 7 is a third flow chart illustrating another method for controlling ingredients according to the embodiment of the present invention;

FIG. 8 is a flow chart of another method for controlling ingredients according to an embodiment of the present invention;

FIG. 9 is a schematic flow chart of another method for controlling ingredients according to an embodiment of the present invention;

fig. 10 shows a flowchart of another method for controlling ingredients according to an embodiment of the present invention.

Icon: 100-a traditional coke oven aged area batching system; 110-a traditional coke oven new zone batching system; 120-a batching control system; 1211-a motor; 1212-frequency converter; 122-weighing device.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.

It is noted that relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Referring to fig. 1a and 1b in combination, fig. 1a shows an exemplary architecture diagram of a conventional coke oven aged zone batching system 100 according to the present invention, and fig. 1b shows an exemplary architecture diagram of a conventional coke oven new zone batching system 110 according to the present invention. Wherein, traditional coke oven district feed proportioning system 100 has realized 1-5# coal bunker PLC control in first period, and follow-up second period has realized 6-10# coal bunker PLC control.

The conventional coke oven aged and new zone batching systems 100 and 110 described above suffer from a number of drawbacks: firstly, the control system architectures of the traditional coke oven old area batching system 100 and the traditional coke oven new area batching system 110 are respectively arranged in arrays, and a control mode of combining PLC control with HMI is adopted, because the batching weight data acquisition, setting and monitoring use only one HMI, the running software is written by a provider by adopting third party software (for example, VB), the provider packages and seals the HMI software in a specified hard disk, once the hard disk is damaged, the system can not be repaired, and the batching is stopped; secondly, the batching system places the weighing equipment (namely the belt balance in fig. 1a and 1 b) on the control layer, and the weighing data acquisition, the speed control of the disc feeder (the disc feeder comprises the frequency converter and the disc motor in fig. 1a and 1 b) and the data interaction with the HMI are required to be completed, and the weighing equipment is out of order due to the restriction of a communication protocol, and the general weighing equipment cannot be replaced, and only the weighing equipment with the same type and high price can be adopted.

Further, the traditional coke oven aged zone batching system 100 has differences in primary and secondary coal feeding control modes, the weighing equipment and the disc feeder are used for double speed regulation control in the primary 1-5# coal bin, the disc feeder is used for single speed regulation in the secondary 6-10# coal bin, and the weighing equipment is used for constant speed control. The first-stage batching double-speed-regulating control equipment has high failure rate, and the second-stage batching single-speed control is stable and reliable, so that the accuracy of the coal proportioning obtained by using the traditional coke oven aged zone batching system 100 is greatly different.

Therefore, the accuracy of the coal proportioning obtained by the conventional coke oven aged and new-zone proportioning systems 100 and 110 in working is different from the advanced level of the same industry.

Based on this, the embodiment of the invention provides a batching control system and a batching control method to solve the above problems.

Referring to fig. 2a and 2b in combination, fig. 2a shows an exemplary architecture diagram of a batch control system 120 according to an embodiment of the present invention, fig. 2b shows a second exemplary architecture diagram of a batch control system 120 according to an embodiment of the present invention, and fig. 2a and 2b show an architecture improvement of the batch control system 120 of a conventional coke oven aged and a conventional coke oven new-zone batch system 100 and 110, respectively.

The overall architecture of the two ingredient control systems 120 is identical, and the overall architecture comprises a PLC control unit, a PLC control subunit, a plurality of disc feeders and weighing devices 122, wherein each disc feeder comprises a motor 1211 and a frequency converter 1212, each frequency converter 1212 is electrically connected with a corresponding motor 1211, the PLC control unit is in communication connection with the PLC control subunit, the PLC control unit is in communication connection with each frequency converter 1212, or the PLC control subunit is in communication connection with each frequency converter 1212, and each weighing device 122 of the PLC control subunit is in communication connection with each frequency converter 1212.

The PLC control unit is used for sending a control signal to the PLC control subunit, so that the PLC control subunit controls the target disc feeder and the target weighing equipment at the corresponding position to start according to the control signal, controls the frequency converter 1212 of the target disc feeder to adjust the rotating speed of the corresponding motor 1211, enables the target disc feeder to discharge coal to the target weighing equipment, and controls the target weighing equipment to transport and weigh the coal at a constant speed.

The PLC control subunit is used for controlling the target disc feeder and the target weighing equipment at the corresponding position to start according to the received control signal, controlling the frequency converter 1212 of the target disc feeder to adjust the rotating speed of the corresponding motor 1211, enabling the target disc feeder to discharge coal to the target weighing equipment, and controlling the target weighing equipment to transport and weigh the coal at a constant speed.

Each of the circular feeders is configured to discharge coal to a corresponding location of the weighing apparatus 122.

Each weighing device 122 is used for transporting and weighing coal at a constant speed, and sending the current coal amount data obtained by weighing to the PLC control subunit, so that the PLC control subunit sends the current coal amount data to the PLC control unit for storage and data report generation.

In the embodiment of the present invention, for the conventional coke oven boss batching system 100, the batching control system 120 of the present invention reduces the weighing device 122 from the control layer to the device layer, cancels the control function of the weighing device 122, only serves as a weighing data collector, transmits the obtained front coal amount data to the PLC control subunit (i.e., the substation in fig. 2 a), and adjusts the rotation speed of the motor 1211 of the disc feeder through the frequency converter 1212 to be taken over by the PLC control subunit, and, in order to unify the speed regulation control mode, unifies the weighing device 122 to be operated at a constant speed, and adjusts the rotation speed of the motor 1211 of the disc feeder only through the PLC control frequency converter 1212.

Further, the HMI architecture in the conventional coke oven district-old batching system 100 is removed, and the first-stage and second-stage PLCs (i.e., the first-stage PLC and the second-stage PLC in fig. 1 a) are integrated into one set of PLCs, which are a PLC control unit and a PLC control subunit (i.e., the batching PLCs and the substations in fig. 2 a), so that the failure of data communication between the two sets of PLCs is eliminated.

In the embodiment of the present invention, for the conventional batching system 110 in the new area of the coke oven, the batching control system 120 also removes the original HMI, and integrates two sets of PLCs (i.e., the coal preparation PLC and the coal blending PLC in fig. 1 b) into one set of PLCs, which are also a PLC control unit and a PLC control subunit (i.e., the coal preparation PLC, the coal blending PLC and the substation in fig. 2 b), specifically, when integrating the original coal blending PLC into the substation in the integration process, the processor of the substation can be further upgraded, so as to further improve the overall processing capability and the operation speed.

For example, when the original traditional batching system 110 in the new area of the coke oven is modified to the batching control system 120 in the embodiment of the present invention, the Premium TSX P57M processor of the coal blending PLC in fig. 1b is eliminated, and the CPU is updated to the Premium TSX P57 3634M processor, so that the overall processing capacity and the operation speed of the system are further improved.

It should be noted that, because the HMI used by the conventional coke oven old-area batching system 100 and the conventional coke oven new-area batching system 110 is removed, when the batching control system 120 in the embodiment of the present invention is used for batching, the HMI monitoring and operation images originally developed are also improved synchronously, that is, the conventional coke oven old-area batching image is fused to the coal preparation IFIX platform, the conventional coke oven new-area batching image is fused to the coal preparation INTOUCH platform, so that HMI redundancy is further implemented, and the embodiment of the present invention will not be repeated.

Further, since the PLC control subunit finally sends the current coal amount data to the PLC control unit to store and generate a data report, for the conventional coke oven old zone batching system 100 and the conventional coke oven new zone batching system 110, when the data is displayed in the form of a report for query, the data need to be packaged with the monitoring VB program, the data to be queried is limited and no new item can be added, and when the HMI system is upgraded, the obtained current coal amount data cannot be queried normally.

Based on this, for the above-mentioned drawbacks, because the batching control system 120 of the embodiment of the present invention removes the original HMI architecture, when performing data query, for the original traditional batching system 100 in the old area of the coke oven, the manner of using the batching control system 120 to perform data storage to generate a report for data query may adopt the data query system based on the IFIX platform and oriented to web application, that is, perform data query by means of web pages, thereby realizing real-time update and automatic storage of data.

Further, for the traditional batching system 110 in the new area of the coke oven, the mode of using the batching control system 120 to store data to generate a report for data query can be adopted, the data query system based on the INTOUCH platform and using VB as a development platform and using SQ12000 database is adopted, the real-time data update and automatic storage are also realized, and the report generated by the query system is in the mode of EXCEL form, so that the query is simpler and more convenient.

According to the batching control system provided by the embodiment of the invention, the weighing equipment 122 is arranged on the equipment layer, namely the weighing equipment 122 is only used as a weighing data collector, the current coal amount data obtained by weighing is sent to the PLC control subunit for processing, the PLC control (the PLC control unit and the PLC control subunit) is used as the main control of the whole system, the defect that the traditional batching system 100 in the old area of the coke oven and the traditional batching system 110 in the new area of the coke oven both use the PLC control and combine with the HMI is overcome, the unification of the communication mode is realized, meanwhile, the weighing equipment 122 is unification of the constant speed, and the speed regulation is only carried out on the disc feeder, so that the whole batching of the batching control system is stable, the operation is simple and convenient, and the maintenance is easy.

Based on the above-mentioned ingredient control system 120, an exemplary illustration of an ingredient control method provided by the embodiment of the present invention is given below using a PLC control unit of the ingredient control system 120 as an execution body, and referring to fig. 3, fig. 3 shows a flow chart of an ingredient control method provided by the embodiment of the present invention.

As shown in fig. 3, the above-mentioned batching control method is applied to a PLC control unit of the batching control system 120, and the PLC control unit is in communication connection with a PLC control subunit in the batching control system, and the PLC control subunit is in communication connection with each weighing device 122 and a frequency converter 1212 of each disc feeder.

The above-described ingredient control method may include the steps of:

and S210, acquiring proportioning data, coal water content data and total dry coal amount data per hour as coal blending data, and acquiring coal blending flow data based on the coal blending data.

S220, a control signal is sent to the PLC control subunit based on the coal blending flow data, so that the PLC control subunit controls the target disc feeder and the target weighing equipment at the corresponding position to start according to the received control signal, controls the frequency converter of the target disc feeder to adjust the rotating speed of the corresponding motor 1211, enables the target disc feeder to discharge coal to the target weighing equipment, and controls the target weighing equipment to transport and weigh the coal at a constant speed.

S230, acquiring current coal quantity data sent by the PLC control subunit, storing the current coal quantity data and generating a data report.

The above steps realize the process of sending control signals to the PLC control subunit through the obtained coal blending data, so that the PLC control subunit controls the disc feeder and the weighing equipment 122 to work, and finally, the current coal amount data is obtained for storage and data report generation.

Illustratively, based on the blending control system 120 shown in fig. 2a and 2b, the user may input corresponding blending data, i.e., input blending data, coal moisture content data, and total dry coal per hour data, on the display interface of the PLC control unit (i.e., the blending PLC in fig. 2a or the coal preparation, blending PLC in fig. 2 b) in step S210. The PLC control unit calculates the amount of coal to be blended in one hour of each coal type based on the data, namely the set coal blending flow data. The calculation formula may be as shown in formula one:

Set coal blending flow data = dry coal total amount data per hour match data/(1-coal moisture content data).

(equation I)

In the embodiment of the present invention, after the above-mentioned coal blending flow data is obtained, step S220 and step S230 are continuously executed, and a control signal is sent to the PLC control subunit, so that the PLC control subunit controls the disc feeder and the weighing device 122 to operate, and the current coal blending flow data sent by the PLC control subunit is obtained and stored, and a data report is generated.

Optionally, during the operation of the disc feeder and the weighing device 122 in the above-mentioned batching control system 120, there is a condition that the disc feeder is broken or overfed, and when the disc feeder is broken or overfed, the accuracy of the finally obtained coal proportioning will be greatly affected, so, for the above-mentioned condition, the PLC control unit of the improved coke oven boss batching system needs to alarm and issue a control command to stop the disc feeder. The specific process can be realized by the following steps:

referring to fig. 4 on the basis of fig. 3, fig. 4 shows a second flow chart of a batch control method according to an embodiment of the present invention, where the PLC control unit is communicatively connected to the frequency converter 1212 of each disk feeder, and the batch control method further includes:

S240, judging whether the current coal amount data is smaller than a first preset value or not, and judging whether the current coal amount data is larger than a second preset value or not.

And if the current coal amount data is greater than the first preset value and less than the second preset value, returning to the step S240.

S241, alarming when the current coal amount data is smaller than a first preset value or larger than a second preset value.

S242, acquiring the current continuous alarm time, and sending a linkage control signal to the frequency converter of the target disc feeder under the condition that the current continuous alarm time reaches the preset alarm time so as to enable the frequency converter of the target disc feeder to adjust the corresponding motor to stop rotating.

The steps realize the process that the PLC control unit alarms and controls the target disc feeder to stop working when the target disc feeder is in a broken or overfeeding state.

It should be noted that, the material breaking of the disc feeder is determined when the blanking amount of the batching control system 120 in the batching process is far less than the preset value, and the material exceeding of the disc feeder is determined when the blanking amount of the batching control system 120 in the batching process is far greater than the preset value. If the batch is broken and the batch is not timely interrupted by the material breaking and the material exceeding of the disc feeder, the accuracy of the mixture ratio of the coal material finally obtained by the batch control system 120 is greatly influenced.

Accordingly, based on the batch control system 120 shown in fig. 2a, the PLC control unit may alarm if it determines that the current coal amount data is smaller than the first preset value or larger than the second preset value, for example, if the current coal amount data is smaller than 20% of the coal amount data obtained in step S210, an "off-batch audible and visual alarm" is sent, or if the current coal amount data is larger than 120% of the coal amount data obtained in step S210, an "over-batch audible and visual alarm" is sent.

Further, when the alarm duration reaches the preset alarm duration, the disc feeder is controlled to stop working, for example, when the alarm duration reaches 30S, the PLC control unit sends a linkage control signal to the frequency converter 1212 of the target disc feeder, so that the frequency converter 1212 of the target disc feeder adjusts the corresponding motor to stop rotating.

Based on the foregoing ingredient control system 120, another ingredient control method is further provided according to the embodiment of the present invention, in which a PLC control subunit of the ingredient control system 120 is used as an execution main body, and referring to fig. 5, fig. 5 shows a flow chart of another ingredient control method provided according to the embodiment of the present invention.

The method is applied to a PLC control subunit of the batching control system 120, the PLC control subunit is in communication connection with a PLC control unit in the batching control system, and the PLC control subunit is in communication connection with each weighing device 122 and a frequency converter 1212 of each disc feeder in the batching control system.

The batching control method comprises the following steps:

and S300, responding to a control signal sent by the PLC control unit, and controlling the target disc feeder and the target weighing equipment at the corresponding position to be started.

S310, controlling a frequency converter of the target disc feeder to adjust the rotating speed of a corresponding motor, so that the target disc feeder discharges coal to the target weighing equipment.

S320, controlling the target weighing equipment to transport and weigh the coal at a constant speed.

S330, acquiring current coal quantity data sent by the target weighing equipment, and sending the current coal quantity data to the PLC control unit so that the PLC control unit stores the current coal quantity data and generates a data report.

The above steps realize the process that the PLC control subunit responds to the control signal sent by the PLC control unit to control the disc feeder and the weighing device 122 to work, so as to obtain the current coal amount data and send the current coal amount data to the PLC control unit, so that the PLC control unit stores the current coal amount data and generates a data report.

Optionally, in the process that the PLC control subunit controls the target disc feeder and the target weighing device at the corresponding position to start, the starting time of the target disc feeder and the target weighing device at the corresponding position also needs to be considered, so as to avoid the situation that if the target disc feeder and the target weighing device at the corresponding position are started simultaneously, coal is blocked at a discharging opening of the target disc feeder. Based on this, the above specific process can be realized by the following steps:

Referring to fig. 6 on the basis of fig. 5, fig. 6 shows a second flow chart of another method for controlling ingredients provided by the embodiment of the present invention, where the ingredient control system further includes a coal preparation transport mechanism and a PLC coal preparation control unit, the coal preparation transport mechanism is in communication connection with the PLC control unit, or is in communication connection with the PLC coal preparation control unit, and each weighing device 122 includes a transport mechanism.

In step S300, in response to a control signal sent by the PLC control unit, a step of controlling the start of the target disc feeder and the target weighing device at the corresponding position includes:

s301, responding to a control signal sent by the PLC control unit, and determining a target weighing device from all weighing devices according to the control signal.

S302, determining a corresponding position of the disc feeder according to the target weighing equipment, and taking the disc feeder as the target disc feeder.

S303, controlling the starting of the transportation mechanism of the target weighing equipment according to the first starting time under the condition that the coal preparation transportation mechanism is started.

S304, controlling the target disc feeder to start according to a second starting time, wherein the second starting time is longer than the first starting time.

S305, returning to execute the steps from determining the target weighing equipment from the weighing equipment according to the control signals to controlling the starting of the target disc feeders according to the second starting time until the transportation mechanisms of all the target weighing equipment and the corresponding target disc feeders are started.

The steps realize the process of controlling the target disc feeder and the target weighing equipment at the corresponding position to be started according to different starting times.

Illustratively, based on the burden control system 120 shown in fig. 2a above, i.e., the modified coke oven aged burden system, if the weighing device 122 is a belt scale, the coal preparation transport mechanism is a large coal preparation belt, and the coal preparation transport mechanism is in communication with the PLC coal preparation control unit (i.e., the coal preparation PLC in fig. 2 a).

Based on the above setting, the user is required to select the weighing devices 122 participating in the ingredients on the corresponding display interfaces of the PLC control unit, and after the PLC control subunit responds to the control signal sent by the PLC control unit, the target weighing device selected by the user is determined from the weighing devices 122 according to the control signal.

Further, under the condition that the coal preparation conveying mechanism (such as a coal preparation large belt) is started, according to the advancing direction of the coal preparation conveying mechanism, the target weighing equipment is started in a delayed mode sequentially from back to front (namely, the conveying mechanism of the target weighing equipment is controlled to be started according to the first starting time), the setting time just can convey the coal on the target weighing equipment to the feed opening of the next-stage target weighing equipment, the target disc feeder is started five seconds behind the corresponding target weighing equipment (namely, the target disc feeder is controlled to be started according to the second starting time, the second starting time is longer than the first starting time), the coal is prevented from being blocked at the feed opening of the target disc feeder, and when all the target conveying mechanisms and the corresponding target disc feeders are started, the system is started integrally.

Optionally, the process that the PLC control subunit of the above-mentioned batching control system 120 controls the frequency converter 1212 of the disc feeder to adjust the transfer of the motor 1211 thereof is actually implemented by the PID regulator of the PLC control subunit, and further needs to control the coal discharging amount when the target disc feeder initially discharges coal, so the specific process that the frequency converter 1212 of the target disc feeder is controlled to adjust the rotation speed of the corresponding motor 1211 can be implemented by the following steps:

referring to fig. 7 on the basis of fig. 6, fig. 7 shows a third flowchart of another method for controlling ingredients provided by the embodiment of the present invention, in which the PLC control subunit stores initial speed data of the frequency converter 1212, the PLC control subunit includes a PID regulator, and in step S310, the step of controlling the frequency converter 1212 of the target disc feeder to adjust the rotation speed of the corresponding motor 1211 includes:

and S311, under the condition that the target disc feeder is started, controlling the frequency converter of the target disc feeder to adjust the rotating speed of the corresponding motor based on the initial speed data of the frequency converter, and recording the current time.

S312, controlling a frequency converter of the target disc feeder to adjust the rotating speed of a corresponding motor based on the speed data output by the PID regulator under the condition that the current time reaches the preset adjusting time.

The steps realize the process of controlling the coal discharging amount of the target disc feeder when the target disc feeder initially discharges the coal and subsequently controlling the coal discharging amount of the target disc feeder when the target disc feeder discharges the coal through the PID regulator.

It should be noted that, the proportional, integral and differential actions of the PID regulator require a steady-state process, for example, if the speed of the target disc feeder does not reach the proper speed 20S before the whole system starts to operate, the obtained current coal amount will be far smaller than the set value, at this time, the PID regulator adjusts the frequency converter 1212 of the disc feeder, and the PID regulator inputs the frequency converter 1212 of the disc feeder with a speed close to 50Hz, which will result in a large coal discharging amount of the disc feeder and further cause the coal preparation transport mechanism to block.

Based on this, it is necessary to store in advance in the PLC control subunit initial speed data of the frequency converter 1212, the initial speed data of the frequency converter 1212 may be the speed before the last operation stop of the disk feeder, and the initial speed data of the frequency converter 1212 is used as a value given by 20S before the next operation of the disk feeder, that is, in the case of starting the target disk feeder, the frequency converter 1212 of the target disk feeder is controlled to adjust the rotation speed of the corresponding motor 1211 based on the initial speed data of the frequency converter 1212 and record the current time, so that the frequency converter 1212 of the target disk feeder adjusts the rotation speed of the corresponding motor 1211 based on a given fixed value.

Further, in case that the current time reaches the preset adjustment time (i.e., the time for the target disc feeder to operate reaches 20S), the frequency converter 1212 of the target disc feeder is controlled to adjust the rotation speed of the corresponding motor 1211 based on the speed data output by the PID regulator, and at this time, the frequency converter 1212 of the target disc feeder is automatically controlled by the PID regulator to adjust the rotation speed of the corresponding motor 1211, so that the whole system operates normally.

Optionally, in the process of discharging the coal, the disc feeder of the above-mentioned batching control system 120, because the coal falls onto the weighing device 122 from the coal tray of the disc feeder, because of the action of gravity, the impact of the symmetrical resetting device 122 is unavoidable, and the fluctuation of the instantaneous value of the current coal amount data obtained by the weighing device 122 is necessarily caused, so a filtering program needs to be designed, the instantaneous value of the current coal amount data is filtered and then is input into the PID regulator for adjustment, so that the data output by the PID regulator is more stable, and the above-mentioned specific process can be realized by the following steps:

referring to fig. 8 on the basis of fig. 7, fig. 8 shows a fourth flow chart of another ingredient control method according to an embodiment of the present invention, where the another ingredient control method further includes:

S340, screening the current coal amount data, and taking the screened current coal amount data as data to be input.

S341, inputting the data to be input into the PID regulator, so that the PID regulator outputs speed data according to the data to be input.

The above steps realize the process of filtering the instantaneous value of the current coal quantity data.

It should be noted that, in step S340, in the case that the target disc feeder is operated based on the initial speed data of the frequency converter in step S311, the target disc feeder discharges coal into the weighing device 122, and the plc control subunit obtains the current coal amount data sent by the target weighing device, and then performs the step of inputting the determined data to be input after the screening is completed to the PID regulator in step S341, and performs step S312, and in the case that the current time reaches the preset adjustment time, controls the frequency converter of the target disc feeder based on the speed data output by the PID regulator to adjust the rotation speed of the corresponding motor, so that the target disc feeder operates normally.

Optionally, for the case of a broken or overfeeding of the disc feeder, the PLC control subunit of the new zone batching system of the improved coke oven needs to alarm and issue control instructions to stop the disc feeder. The specific process can be realized by the following steps:

Referring to fig. 9 on the basis of fig. 7, fig. 9 shows a fifth flowchart of another ingredient control method according to an embodiment of the present invention, where the another ingredient control method further includes:

s350, judging whether the current coal amount data is smaller than a first preset value or not, and judging whether the current coal amount data is larger than a second preset value or not.

S351, alarming when the current coal quantity data is smaller than a first preset value or larger than a second preset value.

S352, acquiring the current continuous alarm time, and sending a linkage control signal to the frequency converter of the target disc feeder under the condition that the current continuous alarm time reaches the preset alarm time so as to enable the frequency converter of the target disc feeder to adjust the corresponding motor to stop rotating.

The steps realize the process that the PLC control subunit alarms and controls the target disc feeder to stop working when the target disc feeder is in a broken or overfeeding state.

In the embodiment of the present invention, the process of alarming and controlling the target disc feeder to stop working is similar to the process from step S240 to step S242, and will not be repeated here.

Optionally, in the process that the PLC control subunit controls the target circular feeder and the target weighing device at the corresponding position to operate, when the motor 1211 of at least one circular feeder stops rotating, the stopping time of the weighing device 122 at the corresponding position of the circular feeder needs to be considered, so as to ensure that after the circular feeder stops, the weighing device 122 has sufficient time to transport the residual coal. Based on this, the above specific process can be realized by the following steps:

Referring to fig. 10 on the basis of fig. 9, fig. 10 shows a sixth flowchart of another ingredient control method according to an embodiment of the present invention, where the another ingredient control method further includes:

and S360, under the condition that the motor of at least one disc feeder stops rotating, stopping the disc feeder corresponding to the motor stopping rotating as a target.

S361, taking the time when the motor of the target shutdown disc feeder stops rotating as the current shutdown time.

S362, controlling the weighing equipment at the corresponding position of the target shutdown disc feeder to stop running according to the first stop time, wherein the first stop time is longer than the current stop time.

The steps realize the process of controlling the weighing equipment at the corresponding position to delay and stop running under the condition that the motor of at least one disc feeder stops rotating.

Illustratively, when the respective disk feeders are stopped in the same order as the start-up and the respective disk feeders have the same time delay and start-up interval, that is, there is a case where the motor 1211 of at least one of the disk feeders stops rotating, the weighing apparatus 122 at the corresponding position of the target stopped disk feeder needs to be controlled to stop operating at a first stop time, which is longer than the current stop time, for example, the first stop time is 10S later than the current stop time.

It should be noted that, when the PLC control unit in the above-mentioned batching control system 120 receives the emergency stop, the batch break, the batch overload alarm or the loss of the operation signal of the coal backup transport mechanism, a stop signal is sent to the PLC control subunit, so that the PLC control subunit controls the motor 1211 of the disc feeder to stop rotating, and controls the weighing device 122 at the corresponding position to stop operating based on steps S360 to S362.

Optionally, the weighing device 122 is a belt scale.

In the embodiment of the invention, because the traditional coke oven aged area batching system 100 also has a plurality of factors such as deformation of a weighing frame, unstable belt tension, easy belt deviation, easy clamping of a metering carrier roller, incomplete coal cleaning of a leather scraper, broken shaft of a speed sensor, incapability of on-line adjustment of a pressure sensor and the like, the use precision of the weighing equipment 122 is also seriously affected. Accordingly, the structure of the weighing device 122 of the ingredient control system 120 may be further improved with respect to the above drawbacks.

For example, the original weighing devices 122 with the precision of 1% of the traditional coke oven boss batching system 100 can be replaced by the weighing devices 122 with the precision of 0.5%. The weighing sensor of the weighing device 122 is replaced by an S-shaped pull type weighing sensor, and the weighing sensor is arranged in rectangular square steel, so that the sensor is not influenced by external conditions such as dust, water, stacking materials and the like, the accuracy of a system is ensured, and the pull sensor of the weighing device 122 is sealed by nitrogen filling, so that the whole weighing device 122 has good waterproof, dustproof and other performances.

For the weighing device 122, the frame can be made of rectangular steel, so that the structure is firm, stable and reliable. Compared with the original coal preparation conveying mechanism, the strength, deflection, vibration resistance, stability and the like of the conveying frame, the weighing bridge frame, the carrier roller and the roller are enhanced.

Further, the belt length of the weighing device 122 is lengthened from 3100mm to 3500mm, and the blanking opening of the disc feeder is lengthened by 40mm from the weighing frame, so that impact of blanking on the weighing frame is greatly reduced.

Based on the above-described batching control system 120 and batching control method, statistics is performed on the coal proportioning accuracy data obtained by working with the traditional coke oven old-area batching system 100 and the traditional coke oven new-area batching system 110, and the coal proportioning accuracy data obtained by working with the batching control system 120 and the batching control method according to the embodiment of the present invention are unified, and the obtained tables are respectively shown as follows:

wherein, batching is performed for the coke oven aged zone, and working is performed by using the batching control system 120 and the batching control method according to the embodiment of the present invention from 2018, 8, to 2019, 7:

(Table I)

Dosing is performed for a new zone of the coke oven, and working is performed by using the dosing control system 120 and the dosing control method according to the embodiment of the invention from 2018, 8, 7 and 9:

(Meter two)

Based on the first and second tables, the accuracy of the coal proportioning obtained by working the batching control system 120 and the batching control method according to the embodiments of the present invention from 2018, 8 to 2019, 7 is improved compared with the accuracy of the coal proportioning obtained by working the traditional coke oven aged batching system 100 and the traditional coke oven new batching system 110.

Meanwhile, as the accuracy of the coal proportioning is increased to more than 98%, the advanced level of the same industry is reached. The coke quality is steadily improved, the coke oven M40 in the new area 5#6# rises by 1.32%, the coke oven M10 falls by 0.15%, and the CSR rises by 0.04%; the aged 1#2# coke oven M40 rises by 2.04%, M10 falls by 0.35% and CSR rises by 0.01%; the coke oven M40 of the aged zone 3#4 rises by 1.40%, the M10 falls by 0.32%, and the CSR rises by 0.01%. The coke mass statistics for each oven are shown in tables three through five of the following tables:

wherein, 1#2# coke oven coke mass statistics are as follows:

(Table III)

The mass statistics of coke of the 3#4 coke oven are as follows:

(Table IV)

The mass statistics of coke of the 3#4 coke oven are as follows:

(Table five)

Based on the same inventive concept, the embodiment of the invention also provides a PLC control unit, which comprises a memory and a processor.

Wherein the memory is for storing a computer program. The processor is configured to execute the computer program to implement a dosage control method as provided in the possible embodiments of step S210 to step S230.

Based on the same inventive concept, the embodiment of the application also provides a PLC control subunit, which comprises a memory and a processor.

Wherein the memory is for storing a computer program. The processor is configured to execute the computer program to implement another ingredient control method as provided in the possible embodiments of step S300 to step S330.

Based on the same inventive concept, an embodiment of the present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements one or the other of the ingredient control methods provided in the above embodiments.

The steps executed when the computer program runs are not described in detail herein, and reference may be made to the explanation of the one ingredient control method and the other ingredient control method.

In the several embodiments provided in the present application, it should be understood that the disclosed system and method may be implemented in other manners as well. The system embodiments described above are merely illustrative, for example, of the flowcharts and block diagrams in the figures that illustrate the architecture, functionality, and operation of possible implementations of methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

In addition, functional modules in the embodiments of the present invention may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.

The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The batching control system is characterized by comprising a PLC control unit, a PLC control subunit, a plurality of disc feeders and weighing equipment, wherein each disc feeder comprises a motor and a frequency converter, each frequency converter is electrically connected with the corresponding motor, the PLC control unit is in communication connection with the PLC control subunit, the PLC control unit is in communication connection with each frequency converter, or the PLC control subunit is in communication connection with each frequency converter, and each weighing equipment of the PLC control subunit is in communication connection;

the PLC control unit is used for sending a control signal to the PLC control subunit, so that the PLC control subunit controls the target disc feeder and the target weighing equipment at the corresponding position to start according to the control signal, controls the frequency converter of the target disc feeder to adjust the rotating speed corresponding to the motor, enables the target disc feeder to discharge coal to the target weighing equipment, and controls the target weighing equipment to transport and weigh the coal at a constant speed;

the PLC control subunit is used for controlling the target disc feeder and the target weighing equipment at the corresponding position to start according to the received control signal, controlling the frequency converter of the target disc feeder to adjust the rotating speed of the corresponding motor, enabling the target disc feeder to discharge coal to the target weighing equipment, and controlling the target weighing equipment to transport and weigh the coal at a constant speed;

Each disc feeder is used for feeding coal to the weighing equipment at the corresponding position;

each weighing device is used for conveying and weighing coal at a constant speed, and sending current coal amount data obtained by weighing to the PLC control subunit, so that the PLC control subunit sends the current coal amount data to the PLC control unit for storage and data report generation.

2. A batching control method, characterized in that the batching control method is applied to the PLC control unit of the batching control system according to claim 1, the PLC control unit is in communication connection with the PLC control subunit in the batching control system, and the PLC control subunit is in communication connection with each weighing device and each frequency converter of the disc feeder;

the method comprises the following steps:

acquiring proportioning data, water content data of coal materials and total dry coal amount data per hour as coal blending data, and acquiring coal blending flow data based on the coal blending data;

transmitting a control signal to the PLC control subunit based on the coal blending flow data, so that the PLC control subunit controls the target disc feeder and the target weighing equipment at the corresponding position to start according to the received control signal, controls the frequency converter of the target disc feeder to adjust the rotating speed corresponding to the motor, enables the target disc feeder to discharge coal to the target weighing equipment, and controls the target weighing equipment to transport and weigh the coal at a constant speed;

And acquiring the current coal amount data sent by the PLC control subunit, storing the current coal amount data and generating a data report.

3. The compounding control method of claim 2, wherein the PLC control unit is communicatively coupled to a frequency converter of each of the disk feeders, the method further comprising:

judging whether the current coal amount data is smaller than a first preset value or not, and judging whether the current coal amount data is larger than a second preset value or not;

alarming when the current coal quantity data is smaller than a first preset value or larger than a second preset value;

acquiring current continuous alarm time, and sending a linkage control signal to a frequency converter of the target disc feeder under the condition that the current continuous alarm time reaches preset alarm time so as to enable the frequency converter of the target disc feeder to adjust the corresponding motor to stop rotating.

4. A batching control method, characterized in that the batching control method is applied to the PLC control subunit of the batching control system according to claim 1, the PLC control subunit is in communication connection with the PLC control unit in the batching control system, and the PLC control subunit is in communication connection with each weighing device and each frequency converter of the disc feeder in the batching control system;

The method comprises the following steps:

responding to a control signal sent by the PLC control unit, and controlling the target disc feeder and a target weighing device at a corresponding position to start;

controlling a frequency converter of the target disc feeder to adjust the rotating speed of the corresponding motor, so that the target disc feeder discharges coal to the target weighing equipment;

controlling the target weighing equipment to transport and weigh the coal at a constant speed;

and acquiring current coal amount data sent by the target weighing equipment, and sending the current coal amount data to the PLC control unit so that the PLC control unit stores the current coal amount data and generates a data report.

5. The compounding control method of claim 4, wherein the compounding control system further comprises a coal preparation transport mechanism and a PLC coal preparation control unit, the coal preparation transport mechanism is in communication connection with the PLC control unit or the PLC coal preparation control unit, and each weighing device comprises a transport mechanism;

the step of responding to the control signal sent by the PLC control unit and controlling the starting of the target disc feeder and the target weighing equipment at the corresponding position comprises the following steps:

Responding to a control signal sent by the PLC control unit, and determining a target weighing device from the weighing devices according to the control signal;

determining a disc feeder at a corresponding position according to the target weighing equipment to serve as a target disc feeder;

under the condition that the coal preparation transport mechanism is started, controlling the transport mechanism of the target weighing equipment to start according to a first starting time;

controlling the target disc feeder to start according to a second starting time, wherein the second starting time is longer than the first starting time;

and returning to the step of determining a target weighing apparatus from each weighing apparatus according to the control signal to control the starting of the target circular feeder at a second starting time until all the transport mechanisms of the target weighing apparatuses and the corresponding target circular feeders are started.

6. The compounding control method of claim 5, wherein the PLC control subunit stores frequency converter initial speed data, the PLC control subunit including a PID regulator;

the step of controlling the frequency converter of the target disc feeder to adjust the rotating speed corresponding to the motor comprises the following steps:

under the condition that the target disc feeder is started, controlling a frequency converter of the target disc feeder to adjust the rotating speed corresponding to the motor based on the initial speed data of the frequency converter, and recording the current time;

And under the condition that the current time reaches the preset adjusting time, controlling a frequency converter of the target disc feeder to adjust the rotating speed of the corresponding motor based on the speed data output by the PID regulator.

7. The compounding control method of claim 6, further comprising:

screening the current coal amount data, and taking the screened current coal amount data as data to be input;

and inputting the data to be input into the PID regulator so that the PID regulator outputs the speed data according to the data to be input.

8. The compounding control method of claim 6, further comprising:

judging whether the current coal amount data is smaller than a first preset value or not, and judging whether the current coal amount data is larger than a second preset value or not;

alarming when the current coal quantity data is smaller than a first preset value or larger than a second preset value;

acquiring current continuous alarm time, and sending a linkage control signal to a frequency converter of the target disc feeder under the condition that the current continuous alarm time reaches preset alarm time so as to enable the frequency converter of the target disc feeder to adjust the corresponding motor to stop rotating.

9. The compounding control method of claim 8, further comprising:

under the condition that the motor of at least one disc feeder stops rotating, stopping the disc feeder corresponding to the motor stopping rotating as a target;

taking the time of stopping rotation of the motor of the target shutdown disc feeder as the current shutdown time;

and controlling the weighing equipment at the corresponding position of the target shutdown disc feeder to stop running according to a first stop time, wherein the first stop time is longer than the current stop time.

10. The method of claim 8, wherein the weighing device is a belt scale.