CN114918031B - Method and system for controlling equipment parameters in high-pressure roller mill - Google Patents

Abstract

The invention discloses a method and system for controlling equipment parameters in a high-pressure roller mill, relates to the technical field of process control, and aims to solve the problem of low qualified rate of products in the high-pressure roller mill process. It mainly includes obtaining the fluctuation information of the roller-abrasive gravity ratio, the current fluctuation information of the roller mill, and the target belt conveyor current in the high-pressure roller grinding process; The matching result of the target current is determined, and the target current adjustment parameter is determined, and the target belt current setting value is determined according to the target belt current and the target current adjustment parameter; the target belt current setting is sent to the target belt control Terminal, so that the target belt conveyor operates according to the current setting value of the target belt conveyor. It is mainly used for the control of equipment parameters in high pressure roller mills.

Description

Equipment parameter control method and system in high pressure roller mill

technical field

The invention relates to the technical field of process control, in particular to a method and system for controlling equipment parameters in a high-pressure roller mill.

Background technique

The high-pressure roller mill is to transport the ore with a particle size of less than 30mm after primary crushing to the high-pressure roller mill through a belt conveyor, a buffer bin, and a vibrating feeder in front of the roller for roller grinding, and the particle size of the ore after roller grinding is less than 3mm. The ore is output through the belt conveyor, buffer bin, and vibrating feeder after the roller. In this process, since the product quality and production efficiency are mainly reflected by the two operating parameters of energy consumption per ton (energy consumption per ton of finished ore output) and roller mill efficiency, the energy consumption per ton and roller mill efficiency are relatively large. The fluctuation of the amplitude will directly affect the product quality and production efficiency. Therefore, it is necessary to adjust the equipment parameter setting value of the high-pressure roller grinding process to realize the control of the fluctuation of the energy consumption per ton and the efficiency of the roller mill.

The existing method of adjusting the set value of equipment parameters mainly depends on the on-site operators to set the frequency of the vibrating feeder in front of the roller, the current of the belt conveyor, the frequency of the vibrating feeder behind the roller and other equipment parameters based on the on-site work experience. value is adjusted. However, due to the different experience levels of operators, large deviations in subjective judgments, and low adjustment accuracy, the production operation is unstable and the product qualification rate is low.

Contents of the invention

In view of this, the present invention provides a method and system for controlling equipment parameters in high-pressure roller mills, the main purpose of which is to solve the problems of unstable production operation and low product qualification rate in the existing high-pressure roller mill process.

According to one aspect of the present invention, a method for controlling equipment parameters in a high-pressure roller mill is provided, including:

Obtain the fluctuation information of the roller-abrasive weight ratio, the current fluctuation information of the roller mill, and the target belt conveyor current in the high-pressure roller grinding process;

Determine the target current adjustment parameter according to the matching result of the roller-abrasive weight ratio fluctuation information, the roller mill current fluctuation information and the preset fluctuation interval, and determine the target according to the target belt conveyor current and the target current adjustment parameter Belt conveyor current setting value;

Sending the target belt conveyor current setting value to the roller mill control terminal, so that the target belt conveyor operates according to the target belt conveyor current setting value.

According to another aspect of the present invention, a high-pressure roller mill equipment parameter control system is provided, including: an edge industrial server and a control terminal;

The edge industrial server is used to obtain the fluctuation information of the roller-abrasive gravity ratio and the current fluctuation information of the roller mill during the high-pressure roller grinding process;

The edge industrial server is also used to determine the target current adjustment parameter according to the fluctuation information of the roller-abrasive weight ratio, the matching result of the current fluctuation information of the roller mill and the preset fluctuation interval, and determine the target current adjustment parameter according to the target belt conveyor current , the target current adjustment parameter determines the target belt conveyor current set value;

The edge industrial server is also used to send the target belt conveyor current setting value to the target belt conveyor control terminal, so that the target belt conveyor operates according to the target belt conveyor current setting value;

The control terminal is configured to receive the target belt conveyor current setting value sent by the edge industrial server, and control the roller mill to operate according to the target belt conveyor current setting value.

By virtue of the above technical solutions, the technical solutions provided by the embodiments of the present invention have at least the following advantages: The present invention provides a method and system for controlling equipment parameters in high-pressure roller mills. Ratio fluctuation information, roller mill current fluctuation information, target belt conveyor current; according to the matching result of the roller abrasive weight ratio fluctuation information, the roller mill current fluctuation information and the preset fluctuation interval, determine the target current adjustment parameter, and Determine the target belt conveyor current setting value according to the target belt conveyor current and the target current adjustment parameter; send the target belt conveyor current setting value to the target belt conveyor control terminal, so that the target belt conveyor follows the target The operation of the current setting value of the belt conveyor greatly reduces the fluctuation range of the material-to-weight ratio and the current value of the roller mill, reduces labor costs, and at the same time ensures the accuracy of control, thereby greatly improving the operation stability of the roller mill and the qualified rate of products .

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the specific embodiments of the present invention are enumerated below.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiment. The drawings are only for the purpose of illustrating a preferred embodiment and are not to be considered as limiting the invention. Also throughout the drawings, the same reference numerals are used to designate the same components. In the attached picture:

Fig. 1 shows a flow chart of a method for controlling equipment parameters in a high-pressure roller mill provided by an embodiment of the present invention;

Fig. 2 shows a schematic diagram of a high pressure roller mill process provided by an embodiment of the present invention;

FIG. 3 shows a flow chart of another method for controlling equipment parameters in a high-pressure roller mill provided by an embodiment of the present invention;

Fig. 4 shows a curve diagram of the current fluctuation curve of the fixed roller of the roller mill in the process of intelligently setting the equipment parameters provided by the embodiment of the present invention;

Fig. 5 shows a curve diagram of the current fluctuation curve of the fixed roller of the roller mill in the process of manually setting the equipment parameters provided by the embodiment of the present invention;

Fig. 6 shows a curve diagram of the current fluctuation curve of the motorized roller of the roller mill during the process of intelligently setting equipment parameters provided by the embodiment of the present invention;

Fig. 7 shows a curve diagram of the current fluctuation curve of the motorized roller of the roller mill in the process of manually setting the equipment parameters provided by the embodiment of the present invention;

Fig. 8 shows a composition block diagram of a high pressure roller mill equipment parameter control system provided by an embodiment of the present invention.

Detailed ways

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

For the existing method of adjusting the set value of equipment parameters, it mainly depends on the on-site operators to set the frequency of the vibrating feeder in front of the roller, the current of the belt conveyor, the frequency of the vibrating feeder behind the roller and other equipment parameters based on the on-site work experience. value to be adjusted. However, due to the different experience levels of operators, large deviations in subjective judgments, and low adjustment accuracy, the production operation is unstable and the product qualification rate is low. An embodiment of the present invention provides a method for controlling equipment parameters in a high-pressure roller mill, as shown in FIG. 1 , the method includes:

101. Obtain the fluctuation information of the roller-abrasive weight ratio, the current fluctuation information of the roller mill, and the target belt conveyor current in the high-pressure roller grinding process.

In the embodiment of the present invention, in the process of high-pressure roller milling, because the actual roller milling process is affected by interference factors such as changes in raw ore composition and large fluctuations in ore particles, energy consumption per ton and roller milling efficiency cannot be measured by the production site, and it is difficult to Therefore, by obtaining the current fluctuation information of the roller mill and the fluctuation information of the roller-abrasive weight ratio, the monitoring of the energy consumption per ton and the fluctuation of the roller mill efficiency is realized. Among them, the current of the roller mill can represent the energy consumption per ton, and the weight ratio of the roller and abrasive can represent the efficiency of the roller mill. The fluctuation information of the roller-abrasive ratio represents the fluctuation of the roller-abrasive ratio, including the fluctuation value of the material-to-weight ratio and the fluctuation state of the material-to-weight ratio. Among them, the material weight ratio fluctuation value is the difference between the current material weight ratio and the preset target roller abrasive weight ratio, the roller abrasive weight ratio is the ratio of the returned material weight to the output material weight after roller grinding, and the returned material weight is the required The weight of the ore material re-entering the roller milling process. The current fluctuation information of the roller mill represents the fluctuation of the roller-abrasive gravity ratio, including the current fluctuation value of the roller mill and the current fluctuation state of the roller mill. Wherein, the fluctuation value of the roller mill current is the difference between the current roller mill current and the preset target roller mill current. The current of the roller mill includes the current of the moving roll and the current of the fixed roll, and the fluctuation trend of the current of the moving roll and the current of the fixed roll is consistent. It should be noted that the roller mill efficiency that cannot be actually measured is replaced by the roller-abrasive weight ratio that can be obtained through data collection and simple calculation, and the energy consumption per ton that cannot be actually measured is replaced by the current of the roller mill that can be obtained through data collection. Replacement, the measurable operation monitoring data is realized, which creates conditions for the accurate analysis and precise control of the energy consumption per ton and the fluctuation of the roller mill efficiency.

102. Determine the target current adjustment parameter according to the matching result of the roller abrasive gravity ratio fluctuation information, the roller mill current fluctuation information and the preset fluctuation interval, and adjust the parameter according to the target belt conveyor current and the target current Determine the target belt drive current setpoint.

In the embodiment of the present invention, after obtaining the fluctuation information of the roller-abrasive weight ratio and the current fluctuation information of the roller mill, in order to determine the fluctuation degree of the roller-abrasive weight ratio and the roller mill current, and make corresponding equipment parameter adjustments according to the degree of fluctuation, Match the fluctuation information of the roller-abrasive weight ratio and the current fluctuation information of the roller mill with the preset fluctuation intervals respectively. Among them, the preset fluctuation interval includes two types of fluctuation intervals: the current fluctuation interval of the motorized fixed roller of the roller mill, and the fluctuation interval of the roller abrasive gravity ratio. The current fluctuation interval of the roller mill and the fluctuation interval of the roller abrasive gravity ratio respectively include Multiple positive and negative fluctuation intervals divided. The preset fluctuation interval is set based on the operation control data of the historical high-pressure roller grinding process and the expert experience of the on-site operators. Each preset fluctuation interval corresponds to a current adjustment parameter. The preset fluctuation interval and the current adjustment parameter The corresponding relationship is stored in the database in the form of IF-THEN. After the corresponding fluctuation interval is matched according to the fluctuation information of the roller abrasive weight ratio or the current fluctuation information of the roller mill, the target current adjustment parameter corresponding to the fluctuation interval is obtained according to the matched fluctuation interval.

It should be noted that, as shown in Figure 2, in the schematic diagram of the high-pressure roller mill process, the target belt conveyor corresponds to belt conveyor #15 in the figure, and the target belt conveyor current is the belt that controls the valve opening of the motor roller and the fixed roller of the roller mill. machine current. Since the valve opening of the moving roller and the fixed roller directly affects the output material weight of the ore produced after roller grinding, as well as the particle size of the output ore, which in turn affects the roller-grinding ratio, and the setting value of the material weight and the setting of the buffer bin The adjustment of the fixed value has less influence on the fluctuation of the relative roller abrasive weight ratio and the roller mill current than the roller mill current. Therefore, by adjusting the set value of the target belt conveyor current, the fluctuation range of the roller abrasive gravity ratio, Control of the current fluctuation amplitude of the roller mill. By summarizing the expert experience of on-site operators, determining multiple preset fluctuation intervals representing different fluctuation degrees, and setting the corresponding current adjustment parameters in a targeted manner according to the degree of fluctuation, it is possible to avoid dependence on on-site operators. Realize the intelligent adjustment of the current of the target belt machine, and at the same time, ensure the accuracy and precision of the current adjustment of the target belt machine, thereby effectively improving the accuracy of the control of the fluctuation of the abrasive weight ratio of the pair of rollers and the current fluctuation of the roller mill.

103. Send the target belt conveyor current setting value to the roller mill control terminal, so that the roller mill operates according to the target belt conveyor current setting value.

In the embodiment of the present invention, after the target belt machine current setting value is determined, in order to make the roller mill run according to the target belt machine current setting value, it is necessary to send the target belt machine current setting value to the roller mill control terminal. The roller mill control terminal, for example, corresponding to the PLC controller of the roller mill, uses the logic control algorithm to write the received current setting value into the underlying current control loop according to the received current setting value, and controls and adjusts the motorized roller of the roller mill The opening of the valve and the valve of the fixed roll is used to control the set value of the current set value of the fixed roll and the set value of the moving roll of the roller mill.

In an embodiment of the present invention, for further illustration and limitation, as shown in FIG. 3 , in step 102, according to the matching result of the fluctuation information of the roller-abrasive weight ratio, the current fluctuation information of the roller mill, and the preset fluctuation interval , to determine the target current adjustment parameters, including:

201. If the current fluctuation state of the roller mill is normal, and the fluctuation state of the abrasive weight ratio of the roller is abnormal, determine the target according to the matching result of the fluctuation value of the abrasive weight ratio of the roller and the fluctuation interval of the abrasive weight ratio of the roller. Current adjustment parameters.

202. If the current fluctuation state of the roller mill is abnormal, determine a target current adjustment parameter according to a matching result of the roller mill current fluctuation value and the roller mill current fluctuation interval.

In the embodiment of the present invention, the roller abrasive gravity ratio fluctuation information includes the roller abrasive gravity ratio fluctuation value and the roller abrasive gravity ratio fluctuation state; the roller mill current fluctuation information includes the roller mill current fluctuation value and the roller mill current fluctuation state. The preset fluctuation range includes the fluctuation range of the roller-abrasive weight ratio and the current fluctuation range of the roller mill. The fluctuation state of the roller abrasive gravity ratio is normal, that is, the absolute value of the roller abrasive gravity ratio fluctuation value is less than or equal to the roller abrasive gravity ratio fluctuation threshold of the roller abrasive gravity ratio fluctuation interval, and cannot match the corresponding roller abrasive gravity ratio fluctuation interval. The fluctuation state of the roller abrasive gravity ratio is abnormal, that is, the absolute value of the roller abrasive gravity ratio fluctuation value is greater than the roller abrasive gravity ratio fluctuation threshold, which can match the corresponding roller mill current fluctuation interval. Similarly, the current fluctuation state of the roller mill is normal, that is, the absolute value of the roller mill current fluctuation value is less than or equal to the roller mill current fluctuation threshold, and cannot match the corresponding roller mill current fluctuation interval. The current fluctuation state of the roller mill is abnormal, that is, the absolute value of the current fluctuation value of the roller mill is greater than the threshold value of the current fluctuation of the roller mill, and can be matched to the corresponding fluctuation range of the roller mill current. Among them, the roller abrasive weight ratio fluctuation threshold is the smallest positive value in the roller abrasive weight ratio fluctuation interval; the roller mill current fluctuation threshold is the smallest positive value in the roller mill current fluctuation interval. If only one of the current fluctuation state of the roller mill and the current fluctuation state of the roller mill is abnormal, the fluctuation value of the corresponding item of the abnormal state is matched with the fluctuation range of the corresponding item. If both the roller mill current fluctuation state and the roller mill current fluctuation state are abnormal, the target current adjustment parameter is determined according to the matching result of the roller mill current fluctuation value and the roller mill current fluctuation interval. In addition, if both the current fluctuation state of the roller mill and the current fluctuation state of the roller mill are normal, it indicates that the current production operation is in good condition, and there is no need to adjust the current setting value of the target belt conveyor.

It should be noted that since the operating parameters to be monitored (roller mill current, roller-abrasive weight ratio) are not unique, the only target current adjustment parameter needs to be determined by matching the fluctuation value and the fluctuation range. By judging whether the fluctuation state is normal or not, it is determined whether it needs to be matched with the preset fluctuation range, and if it needs to be matched, it needs to be matched with the preset fluctuation range according to the fluctuation value of which operating parameter. When the two operating parameters are abnormal, the current fluctuation value of the roller mill that is more accurate in determining the target current adjustment parameter is selected for matching with the preset fluctuation interval, and the optimal and unique operating parameter can be determined for the matching of the fluctuation interval. Therefore, the uniqueness of matching the operating parameter fluctuation value with the preset fluctuation range is guaranteed, and at the same time, the accuracy of the current setting of the roller mill is improved.

In an embodiment of the present invention, for further illustration and limitation, the fluctuation interval of the roller-abrasive weight ratio and the fluctuation interval of the roller mill current respectively include at least five positive fluctuation intervals and five negative fluctuation intervals;

The first positive fluctuation interval is smaller than the second positive fluctuation interval, the second positive fluctuation interval is smaller than the third positive fluctuation interval, the third positive fluctuation interval is smaller than the fourth positive fluctuation interval, and the fourth positive fluctuation interval is smaller than the first positive fluctuation interval. Five positive fluctuation intervals;

The first negative fluctuation interval is larger than the second negative fluctuation interval, the second negative fluctuation interval is larger than the third negative fluctuation interval, the third negative fluctuation interval is larger than the fourth negative fluctuation interval, and the fourth negative fluctuation interval is larger than the first negative fluctuation interval. Five negative fluctuation intervals.

In the embodiment of the present invention, in order to set different target current adjustment parameters for different fluctuations in the roller-abrasive weight ratio and the roller mill current, and considering the fluctuation of the roller-abrasive weight ratio and the fluctuation of the roller mill current include There are two types of positive fluctuation and negative fluctuation, that is, the difference between the roller abrasive weight ratio and the preset target roller abrasive weight ratio, and the difference between the roller mill current and the preset target roller mill current may be positive or negative. Therefore, five interval point values b ₁ -b ₅ are set for the current fluctuation value of the roller mill in ascending order, and b ₁ <b ₅ , for example, 2, 4, 6, 8, 10. The fluctuation range of the roller mill current is divided into five positive fluctuation intervals by these five interval point values. Correspondingly, using the negative values corresponding to the five fluctuation values, the fluctuation range of the roller mill current is divided into five negative fluctuation intervals. Similarly, five interval point values c ₁ -c ₅ are set for the roller-abrasive weight ratio fluctuation value in ascending order, and c ₁ <c ₅ , for example, 1, 5, 10, 15, 20. The fluctuation range of the roller-abrasive weight ratio is divided into five positive fluctuation intervals and five negative fluctuation intervals through the five interval point values and corresponding negative values. The number of positive and negative fluctuation intervals and the setting of interval point values can be customized according to specific application needs, which are not specifically limited in the embodiment of the present invention.

In an embodiment of the present invention, for further illustration and limitation, in step 201, the target current adjustment parameter is determined according to the matching result of the fluctuation value of the roller-abrasive gravity ratio and the fluctuation interval of the roller-abrasive gravity ratio, including:

If the roller abrasive weight ratio fluctuation value matches the first positive roller abrasive weight ratio fluctuation interval or the first negative roller abrasive weight ratio fluctuation interval, then obtain the first current adjustment parameter as the target current adjustment parameter;

If the fluctuation value of the abrasive gravity ratio of the roller matches the fluctuation interval of the second positive roller abrasive gravity ratio or the fluctuation interval of the second negative roller abrasive gravity ratio, the second current adjustment parameter is obtained as the target current adjustment parameter;

If the roller abrasive weight ratio fluctuation value matches the third positive roller abrasive weight ratio fluctuation interval or the third negative roller abrasive weight ratio fluctuation interval, then obtain the third current adjustment parameter as the target current adjustment parameter;

If the roller abrasive weight ratio fluctuation value matches the fourth positive roller abrasive weight ratio fluctuation interval or the fourth negative roller abrasive weight ratio fluctuation interval, then obtain the fourth current adjustment parameter as the target current adjustment parameter;

If the roller abrasive weight ratio fluctuation value matches the fifth positive roller abrasive weight ratio fluctuation interval or the fifth negative roller abrasive weight ratio fluctuation interval, then obtain the fifth current adjustment parameter as the target current adjustment parameter;

In step 202, according to the matching result of the current fluctuation value of the roller mill and the current fluctuation interval of the roller mill, determine the target current adjustment parameter, including:

If the roller mill current fluctuation value matches the first positive roller mill current fluctuation interval or the first negative roller mill current fluctuation interval, acquiring a first current adjustment parameter as a target current adjustment parameter;

If the roller mill current fluctuation value matches the second positive roller mill current fluctuation interval or the second negative roller mill current fluctuation interval, obtaining a second current adjustment parameter as a target current adjustment parameter;

If the roller mill current fluctuation value matches the third positive roller mill current fluctuation interval or the third negative roller mill current fluctuation interval, obtaining a third current adjustment parameter as a target current adjustment parameter;

If the roller mill current fluctuation value matches the fourth positive roller mill current fluctuation interval or the fourth negative roller mill current fluctuation interval, obtaining a fourth current adjustment parameter as a target current adjustment parameter;

If the roller mill current fluctuation value matches the fifth positive roller mill current fluctuation interval or the fifth negative roller mill current fluctuation interval, a fifth current adjustment parameter is acquired as a target current adjustment parameter.

Wherein, the first current adjustment parameter is smaller than the second current adjustment parameter, the second current adjustment parameter is smaller than the third current adjustment parameter, and the third current adjustment parameter is smaller than the fourth current adjustment parameter, The fourth current adjustment parameter is smaller than the fifth current adjustment parameter.

In the embodiment of the present invention, in order to realize operating parameters with different fluctuation ranges, different roller mill current adjustment ranges are used, and for each preset fluctuation range, corresponding current adjustment parameters are set according to the size of the fluctuation range. Because the number of divisions between the current fluctuation interval of the roller mill and the fluctuation interval of the roller abrasive weight ratio is the same, the division fluctuation range is corresponding, and the fluctuation ranges of the first positive fluctuation interval and the first negative fluctuation interval are the same (the absolute value of the interval point value equal), therefore, the same current adjustment parameters are used for the fluctuation intervals of the same level of roller mill current and roller abrasive weight ratio, and the same current adjustment parameters are used for the positive fluctuation intervals and negative fluctuation intervals of the same level. For example, the current adjustment parameters corresponding to the first positive roller abrasive weight ratio fluctuation interval, the first negative roller abrasive gravity ratio fluctuation interval, the first positive roller mill current fluctuation interval, and the first negative roller mill current fluctuation interval are the first current adjustment parameters. Wherein, the first current adjustment parameter to the fifth current adjustment parameter are expressed as x ₁ -x ₅ and x ₁ <x ₅ , for example, 5, 10, 15, 20, 25. The fluctuation interval of the roller mill current and the fluctuation interval of the roller-abrasive weight ratio can also correspond to different current adjustment parameters, and the positive fluctuation interval and the negative fluctuation interval can also correspond to different current adjustment parameters. The embodiment of the present invention does not make specific limited.

In an embodiment of the present invention, for further illustration and limitation, as shown in FIG. 3 , determining the target belt conveyor current setting value according to the target current adjustment parameter in step 102 includes:

203 . If the fluctuation value of the roller-abrasive weight ratio matches the positive fluctuation range, perform a summation calculation on the target belt conveyor current and the target current adjustment parameter to obtain a target belt conveyor current setting value.

204. If the fluctuation value of the roller-abrasive weight ratio matches the negative fluctuation range, calculate the difference between the target belt machine current and the target current adjustment parameter to obtain the target belt machine current setting value.

205. If the roller mill current fluctuation value matches the positive fluctuation range, calculate the difference between the target belt machine current and the target current adjustment parameter to obtain a target belt machine current setting value.

206. If the roller mill current fluctuation value matches the negative fluctuation range, perform summation calculation on the target belt conveyor current and the target current adjustment parameter to obtain a target belt conveyor current setting value.

In the embodiment of the present invention, the roller-abrasive gravity ratio fluctuation information includes the roller-abrasive gravity ratio fluctuation value, and the roller mill current fluctuation information includes the roller mill current fluctuation value. The preset fluctuation interval includes a positive fluctuation interval and a negative fluctuation interval, wherein the positive fluctuation interval includes all positive fluctuation intervals of the roller-abrasive weight ratio and all positive fluctuation intervals of the current fluctuation of the roller mill. Because the fluctuation value of the roller-abrasive weight ratio is too large, it means that the particle size of the mineral material after the roller mill is relatively small, and the output of the mineral material is relatively small, that is, the roll gap between the moving roller and the fixed roller is too small. Therefore, it is necessary to By increasing the current of the target belt conveyor, the roll gap between the moving roll and the fixed roll is enlarged, thereby reducing the fluctuation range of the roll abrasive weight ratio, that is, reducing the absolute value of the roll abrasive weight ratio fluctuation value.

The method described in the embodiment of the present invention is applied to the scene of intelligent setting, as shown in Table 1, Table 2, and Table 3. In the industrial application of 6000 groups, the current of the moving roller and the current of the fixed roller during the high-pressure roller grinding process, The material-to-weight ratio is controlled within the target value range, and the pass rate of the moving roller current interval is increased by 6.62%, the mean square error (MSE) of the error is increased by 53.35%, and the cumulative sum of errors (IAE) is increased by 31%. The passing rate of fixed roll current range increased by 5.1%, the error mean square error (MSE) increased by 50.76%, and the cumulative sum of errors (IAE) increased by 18.9%. The pass rate of the weighing ratio range increased by 7.05%, the mean square error (MSE) of the error increased by 36.5%, and the cumulative sum of errors (IAE) increased by 15.6%. As shown in Figures 4, 5, 6, and 7, the intelligent setting control effect is much better than the manual setting effect.

Table 1:

Table 2:

table 3:

In a specific application scenario, set the current fluctuation value of the roller mill as e _i(i =1,2)(k), where e ₁ (k) is the current of the moving roller, and e ₂ (k) is the current of the fixed roller. Roller current, set the fluctuation value of the roller-abrasive weight ratio at the current moment as e ₃ (k), the current setting value of the target belt conveyor as y _sp2 (k), and the current setting value of the target belt conveyor at the current moment as y _sp2 (k-1 ), the first current adjustment parameter to the fifth current adjustment parameter are x ₁ , x ₂ , x ₃ , x ₄ , x ₅ in sequence. According to the fluctuation value of different roller abrasive weight ratio and the current fluctuation value of different roller mills, according to the IF-THEN statement retrieved from the database, the specific process of determining the corresponding target belt conveyor current setting value includes:

1) When the absolute value of the current fluctuation of the roller mill is less than or equal to the minimum value of the current fluctuation interval of the target belt conveyor, and when the absolute value of the fluctuation value of the roller abrasive gravity ratio is less than or equal to the minimum value of the fluctuation interval of the roller abrasive gravity ratio, keep The current target belt conveyor current setting value remains unchanged:

IF|e _i(i=1,2) (k)|≤b ₁ ,|e ₃ (k)|≤c ₁ THEN y _sp2 (k)=y _sp2 (k-1) (1);

2) The absolute value of the fluctuation value of the roller-abrasive weight ratio is less than or equal to the minimum value of the fluctuation interval value of the roller-abrasive weight ratio, and the current fluctuation values e ₁ (k) and e ₂ (k) of the roller mill match the first forward roller mill The current fluctuation interval (b ₁ , b ₂ ] indicates that the current target belt conveyor is greater than the preset target roller mill current, and the set value of the target belt conveyor current is adjusted according to the first current adjustment parameter:

IF b ₁ <e _i(i=1,2) (k)≤b ₂ , |e ₃ (k)|≤c ₁ THEN y _sp2 (k)=y _sp2 (k-1)-x ₁ (2) ;

3) The absolute value of the fluctuation value of the roller-abrasive gravity ratio is less than or equal to the minimum value of the fluctuation interval value of the roller-abrasive gravity ratio, and the current fluctuation values e ₁ (k) and e ₂ (k) of the roller mill match the second forward roller mill The current fluctuation interval (b ₂ , b ₃ ] indicates that the current target belt conveyor current is greater than the preset target roller mill current, and the set value of the target belt conveyor current is adjusted according to the second current adjustment parameter:

IF b ₂ <e _i(i=1,2) (k)≤b ₃ , |e ₃ (k)|≤c ₁ THEN y _sp2 (k)=y _sp2 (k-1)-x ₂ (3) ;

4) The absolute value of the fluctuation value of the roller-abrasive gravity ratio is less than or equal to the minimum value of the fluctuation interval value of the roller-abrasive gravity ratio, and the current fluctuation values e ₁ (k) and e ₂ (k) of the roller mill match the third forward roller mill The current fluctuation interval (b ₃ , b ₄ ] indicates that the current target belt conveyor current is greater than the preset target roller mill current, and the set value of the target belt conveyor current is adjusted according to the third current adjustment parameter:

IF b ₃ <e _i(i=1,2) (k)≤b ₄ , |e ₃ (k)|≤c ₁ THEN y _sp2 (k)=y _sp2 (k-1)-x ₃ (4) ;

5) The absolute value of the fluctuation value of the roller-abrasive weight ratio is less than or equal to the minimum value of the fluctuation interval value of the roller-abrasive weight ratio, and the current fluctuation values e ₁ (k) and e ₂ (k) of the roller mill match the fourth forward roller mill The current fluctuation interval (b ₄ , b ₅ ] indicates that the current target belt conveyor current is greater than the preset target roller mill current, and the set value of the target belt conveyor current is adjusted according to the fourth current adjustment parameter:

IF b ₄ <e _i(i=1,2) (k)≤b ₅ , |e ₃ (k)|≤c ₁ THEN y _sp2 (k)=y _sp2 (k-1)-x ₄ (5) ;

6) The absolute value of the fluctuation value of the roller-abrasive weight ratio is less than or equal to the minimum value of the fluctuation interval value of the roller-abrasive weight ratio, and the current fluctuation values e ₁ (k) and e ₂ (k) of the roller mill match the fifth forward roller mill The current fluctuation interval (b ₅ , ∝) indicates that the current target belt conveyor current is greater than the preset target roller mill current, and the set value of the target belt conveyor current is adjusted according to the fifth current adjustment parameter:

IF e _i(i=1,2) (k)>b ₅ , |e ₃ (k)|≤c ₁ THEN y _sp2 (k)=y _sp2 (k-1)-x ₅ (6);

7) The absolute value of the fluctuation value of the roller-abrasive weight ratio is less than or equal to the minimum value of the fluctuation interval value of the roller-abrasive weight ratio, and the current fluctuation values e ₁ (k) and e ₂ (k) of the roller mill match the first negative roller mill The current fluctuation interval (-b ₂ ,-b ₁ ] indicates that the current target belt conveyor current is less than the preset target roller mill current, and the set value of the target belt conveyor current is adjusted according to the first current adjustment parameter:

IF-b ₂ <e _i(i=1,2) (k)≤-b ₁ , |e ₃ (k)|≤c ₁ THEN y _sp2 (k)=y _sp2 (k-1)+x ₁ ( 7);

8) The absolute value of the fluctuation value of the roller-abrasive gravity ratio is less than or equal to the minimum value of the fluctuation interval value of the roller-abrasive gravity ratio, and the current fluctuation values e ₁ (k) and e ₂ (k) of the roller mill match the second negative roller mill The current fluctuation interval (-b ₃ ,-b ₂ ] indicates that the current target belt conveyor current is less than the preset target roller mill current, and the set value of the target belt conveyor current is adjusted according to the second current adjustment parameter:

IF-b ₃ <e _i(i=1,2) (k)≤-b ₂ , |e ₃ (k)|≤c ₁ THEN y _sp2 (k)=y _sp2 (k-1)+x ₂ ( 8);

9) The absolute value of the fluctuation value of the roller abrasive weight ratio is less than or equal to the minimum value of the fluctuation interval value of the roller abrasive weight ratio, and the current fluctuation values e ₁ (k) and e ₂ (k) of the roller mill match the third negative roller mill The current fluctuation interval (-b ₄ ,-b ₃ ] indicates that the current target belt conveyor current is less than the preset target roller mill current, and the set value of the target belt conveyor current is adjusted according to the third current adjustment parameter:

IF-b ₄ <e _i(i=1,2) (k)≤-b ₃ , |e ₃ (k)|≤c ₁ THEN y _sp2 (k)=y _sp2 (k-1)+x ₃ ( 9);

10) The absolute value of the fluctuation value of the roller abrasive weight ratio is less than or equal to the minimum value of the fluctuation interval value of the roller abrasive weight ratio, and the current fluctuation values e ₁ (k) and e ₂ (k) of the roller mill match the fourth negative roller mill The current fluctuation interval (-b ₅ ,-b ₄ ] indicates that the current target belt conveyor current is less than the preset target roller mill current, and the set value of the target belt conveyor current is adjusted according to the fourth current adjustment parameter:

IF b ₄ <e _i(i=1,2) (k)≤b ₅ , |e ₃ (k)|≤c ₁ THEN y _sp2 (k)=y _sp2 (k-1)+x ₄ (10) ;

11) The absolute value of the fluctuation value of the roller abrasive weight ratio is less than or equal to the minimum value of the fluctuation interval value of the roller abrasive weight ratio, and the current fluctuation values e ₁ (k) and e ₂ (k) of the roller mill match the fifth negative roller mill The current fluctuation interval (-∝, -b ₅ ) indicates that the current target belt conveyor current is less than the preset target roller mill current, and the set value of the target belt conveyor current is adjusted according to the fifth current adjustment parameter:

IF-b ₅ <e _i(i=1,2) (k)≤-b ₄ , |e ₃ (k)|≤c ₁ THEN y _sp2 (k)=y _sp2 (k-1)+x ₄ ( 11);

12) The absolute value of the current fluctuation value of the roller mill is less than or equal to the minimum value of the current fluctuation interval of the roller mill, and the fluctuation value of the roller abrasive weight ratio e ₃ (k) matches the first positive roller abrasive weight ratio fluctuation interval (c ₁ ,c ₂ ], the current roller abrasive gravity ratio is greater than the preset target roller abrasive gravity ratio, adjust the target belt conveyor current setting value according to the first current adjustment parameter:

IF|e _i(i=1,2) (k)|≤b ₁ c ₁ <e ₃ (k)≤c ₂ THEN y _sp2 (k)=y _sp2 (k-1)+x ₁ (12);

13) The absolute value of the roller mill current fluctuation value is less than or equal to the minimum value of the roller mill current fluctuation interval value, and the roller abrasive weight ratio fluctuation value e ₃ (k) matches the second forward roller abrasive weight ratio fluctuation interval (c ₂ ,c ₃ ], the current roller abrasive gravity ratio is greater than the preset target roller abrasive gravity ratio, adjust the target belt conveyor current setting value according to the second current adjustment parameter:

IF|e _i(i=1,2) (k)|≤b ₁ c ₂ <e ₃ (k)≤c ₃ THEN y _sp2 (k)=y _sp2 (k-1)+x ₂ (13);

14) The absolute value of the roller mill current fluctuation value is less than or equal to the minimum value of the roller mill current fluctuation interval value, and the roller abrasive weight ratio fluctuation value e ₃ (k) matches the third forward roller abrasive weight ratio fluctuation interval (c ₃ ,c ₄ ], the current roller abrasive gravity ratio is greater than the preset target roller abrasive gravity ratio, adjust the target belt conveyor current setting value according to the third current adjustment parameter:

IF|e _i(i=1,2) (k)|≤b ₁ c ₃ <e ₃ (k)≤c ₄ THEN y _sp2 (k)=y _sp2 (k-1)+x ₃ (14);

15) The absolute value of the roller mill current fluctuation value is less than or equal to the minimum value of the roller mill current fluctuation interval value, and the roller abrasive weight ratio fluctuation value e ₃ (k) matches the fourth forward roller abrasive weight ratio fluctuation interval (c ₄ ,c ₅ ], the current roller abrasive gravity ratio is greater than the preset target roller abrasive gravity ratio, adjust the target belt conveyor current setting value according to the fourth current adjustment parameter:

IF|e _i(i=1,2) (k)|≤b ₁ c ₄ <e ₃ (k)≤c ₅ THEN y _sp2 (k)=y _sp2 (k-1)+x ₄ (15);

16) The absolute value of the roller mill current fluctuation value is less than or equal to the minimum value of the roller mill current fluctuation interval value, and the roller abrasive weight ratio fluctuation value e ₃ (k) matches the fifth positive roller abrasive weight ratio fluctuation interval (b ₅ , ∝), the current roller abrasive gravity ratio is greater than the preset target roller abrasive gravity ratio, adjust the target belt conveyor current setting value according to the fifth current adjustment parameter:

IF|e _i(i=1,2) (k)|≤b ₁ e ₃ (k)>c ₅ THEN y _sp2 (k)=y _sp2 (k-1)+x ₅ (16);

17) The absolute value of the roller mill current fluctuation value is less than or equal to the minimum value of the roller mill current fluctuation interval value, and the roller abrasive weight ratio fluctuation value e ₃ (k) matches the first negative roller abrasive weight ratio fluctuation interval (-c ₂ ,-c ₁ ], the current roller abrasive gravity ratio is less than the preset target roller abrasive gravity ratio, adjust the target belt conveyor current setting value according to the first current adjustment parameter:

IF|e _i(i=1,2) (k)|≤b ₁ -c ₂ <e ₃ (k)≤-c ₁ THEN y _sp2 (k)＝y _sp2 (k-1)-x ₁ (17 );

18) The absolute value of the roller mill current fluctuation value is less than or equal to the minimum value of the roller mill current fluctuation interval value, and the roller abrasive weight ratio fluctuation value e ₃ (k) matches the second negative roller abrasive weight ratio fluctuation interval (-c ₃ ,-c ₂ ], the current roller abrasive weight ratio is less than the preset target roller abrasive weight ratio, adjust the target belt conveyor current setting value according to the first current adjustment parameter:

IF|e _i(i=1,2) (k)|≤b ₁ -c ₃ <e ₃ (k)≤-c ₂ THEN y _sp2 (k)=y _sp2 (k-1)-x ₂ (18 );

19) The absolute value of the roller mill current fluctuation value is less than or equal to the minimum value of the roller mill current fluctuation interval value, and the roller abrasive weight ratio fluctuation value e ₃ (k) matches the third negative roller abrasive weight ratio fluctuation interval (-c ₄ ,-c ₃ ], the current roller abrasive gravity ratio is less than the preset target roller abrasive gravity ratio, adjust the target belt conveyor current setting value according to the first current adjustment parameter:

IF|e _i(i=1,2) (k)|≤b ₁ -c ₄ <e ₃ (k)≤-c ₃ THEN y _sp2 (k)=y _sp2 (k-1)-x ₃ (19 );

20) The absolute value of the current fluctuation value of the roller mill is less than or equal to the minimum value of the current fluctuation interval of the roller mill, and the fluctuation value of the roller abrasive weight ratio e ₃ (k) matches the fourth negative roller abrasive weight ratio fluctuation interval (-c ₅ ,-c ₄ ], the current roller abrasive gravity ratio is less than the preset target roller abrasive gravity ratio, adjust the target belt conveyor current setting value according to the first current adjustment parameter:

IF|e _i(i=1,2) (k)|≤b ₁ -c ₅ <e ₃ (k)≤-c ₆ THEN y _sp2 (k)=y _sp2 (k-1)-x ₄ (20 );

21) The absolute value of the current fluctuation value of the roller mill is less than or equal to the minimum value of the current fluctuation interval of the roller mill, and the fluctuation value of the roller abrasive weight ratio e ₃ (k) matches the fifth negative roller abrasive weight ratio fluctuation interval (-∝ , -c ₅ ), the current roller abrasive gravity ratio is less than the preset target roller abrasive gravity ratio, adjust the target belt conveyor current setting value according to the first current adjustment parameter:

IF|e _i(i=1,2) (k)|≤b ₁ e ₃ (k)≤-c ₅ THEN y _sp2 (k)=y _sp2 (k-1)-x ₅ (21);

22) When the absolute value of the current fluctuation value of the roller mill is less than or equal to the minimum value of the current fluctuation interval value of the roller mill, and when the absolute value of the fluctuation value of the roller abrasive gravity ratio is less than the minimum value of the roller abrasive gravity ratio fluctuation interval value, refer to Steps 2) to 11) adjust the setting value of the target belt conveyor current.

23) In the process of adjusting the current of the target belt conveyor, maintain the set value of the material weight, and the set value of the material level of the 18#&19# belt buffer bin remains unchanged.

In an embodiment of the present invention, for further illustration and limitation, after determining the target belt conveyor current setting value according to the target current adjustment parameter, the method further includes:

If the difference between the target belt machine current and the target current adjustment parameter is less than the minimum set value of the roller mill current, then use the minimum set value of the roller mill current as the target belt machine current set value;

If the sum of the target belt machine current and the target current adjustment parameter is greater than the maximum set value of the roller mill current, the maximum set value of the roller mill current is used as the target belt machine current set value.

In the embodiment of the present invention, since the setting of the roller mill current needs to be within the limit value of the roller mill current, that is, the maximum setting value of the roller mill current and the minimum setting value of the roller mill current, in order to prevent the target current from being adjusted If the target belt conveyor current setting value after parameter adjustment exceeds the limit value of the roller mill current, after obtaining the target belt conveyor current setting value, it is necessary to limit the target belt conveyor current setting value. Specifically, the maximum setting value of the target belt conveyor current is y _sp2max (k), the minimum setting value y _sp2min (k), and the limiting formula of the target belt conveyor current setting value y _sp2 (k) is:

By limiting the current setting value of the target belt conveyor, the rationality of the current setting value of the target belt conveyor can be effectively ensured, thereby ensuring the safe operation of the belt conveyor.

In an embodiment of the present invention, for further illustration and limitation, before acquiring the fluctuation information of the roller-abrasive weight ratio and the current fluctuation information of the roller mill during the high-pressure roller grinding process, the method further includes:

1. Obtain the initial output material weight, initial return material weight, and initial roll mill current of the high-pressure roller mill process, and analyze the initial output material weight, the initial return material weight, and the initial roll mill current. The current is filtered to obtain the output material weight, the return material weight, and the current of the roller mill;

2. Determine the roller-abrasive weight ratio according to the ratio of the weight of the returned material to the weight of the output material;

3. Determine the fluctuation information of the roller abrasive weight ratio according to the roller abrasive weight ratio, and determine the current fluctuation information of the roller mill according to the roller mill current. The roller abrasive weight ratio fluctuation information includes the roller abrasive weight ratio fluctuation value, the roller Abrasive weight ratio fluctuation state, the roller mill current fluctuation information includes roller mill current fluctuation value and roller mill current fluctuation state.

In the embodiment of the present invention, as shown in Figure 2, in the high pressure roller mill process, the ore will first pass through the 17# belt conveyor after the ore is rolled by the roller mill, and the initial output material will be collected by the 17# belt conveyor Then, after being screened by a linear vibrating sieve, the unqualified ore will be returned to the feed inlet through the 21# belt conveyor for secondary roller grinding, and the initial return material weight will be collected by the 21# belt conveyor. The initial roller mill current is collected directly with an ammeter. After obtaining the initial output material weight, initial return material weight, and initial roller mill current, in order to reduce the influence of data noise and abnormal values, the initial output material weight, initial return material weight, and initial roller mill current Time-series data is subjected to first-order inertial filtering within the time window, the formula is: Y(n)=αX(n)+(1-α)Y(n-1)(23); where X(n) is the currently collected The initial value, Y(n-1) is the output value of the previous filtering, Y(n) is the current filtering output value, and α is the filtering coefficient, which can be 0.1, which is not specifically limited in the embodiment of the present invention.

In an embodiment of the present invention, for further illustration and limitation, in step 3, determining the fluctuation information of the roller abrasive ratio according to the roller abrasive ratio, and determining the roller mill current fluctuation information according to the roller mill current, include :

By calculating the difference between the roller abrasive weight ratio and the preset target roller abrasive weight ratio, determine the fluctuation value of the roller abrasive weight ratio, and by calculating the difference between the roller mill current and the preset target roller mill current, determine Current fluctuation value of roller mill;

If the absolute value of the roller mill current fluctuation value is less than or equal to the roller mill current fluctuation threshold value, then determine that the roller mill current fluctuation state is normal, if the absolute value of the roller mill current fluctuation value is greater than the roller mill current fluctuation threshold, it is determined that the current fluctuation state of the roller mill is abnormal;

If the absolute value of the roller abrasive weight ratio fluctuation value is less than or equal to the roller abrasive weight ratio fluctuation threshold, it is determined that the roller abrasive weight ratio fluctuation state is normal, if the absolute value of the roller abrasive weight ratio fluctuation value is greater than the roller abrasive weight ratio fluctuation threshold, it is determined that the roller abrasive gravity ratio fluctuation state is abnormal.

In the embodiment of the present invention, in order to accurately determine the roller-abrasive weight ratio and the fluctuation range of the roller mill current, the optimal value of the roller-abrasive weight ratio and the roller mill current is set according to empirical values, that is, the preset target roller-abrasive weight ratio, The target roller mill current is preset, and then the fluctuation value of the roller-abrasive weight ratio and the fluctuation value of the roller mill current are determined. Specifically, set the abrasive-grain ratio of the roller as r ₃ (k), the current of the moving roller in the roller mill current r ₁ (k), the current of the fixed roller r ₂ (k), and preset the abrasive-grain ratio of the target roller as r ₃ ^* , the preset target current r ₁ ^* of the moving roll, and the preset target current r ₂ ^* of the fixed roll in the preset target roll mill current. The current fluctuation value of the moving roller is e ₁ (k)=r ₁ (k)-r ^* (24); the current fluctuation value of the fixed roller is e ₂ (k)=r ₂ (k)-r ₂ ^* (25); the roller The abrasive weight ratio fluctuation value is e ₃ (k)=r ₃ (k)-r ₃ ^* (26).

In an embodiment of the present invention, for further illustration and limitation, the current fluctuation information of the roller mill includes the current fluctuation information of the fixed roll and the current fluctuation information of the moving roll, and the current fluctuation information of the fixed roll is related to the current fluctuation information of the moving roll The information matches the same preset volatility interval.

In the embodiment of the present invention, the roller mill includes a moving roller and a fixed roller, and the current of the roller mill includes a moving roller current and a fixed roller current. Since the fluctuation trend of the current of the moving roll and the current of the fixed roll is the same, when matching the fluctuation interval and judging the fluctuation state, the current of the moving roll and the fixed roll are reflected by the current of the roller mill.

The present invention provides a method for controlling equipment parameters in high-pressure roller mills. The embodiment of the present invention acquires the fluctuation information of the roller-abrasive weight ratio in the high-pressure roller mill process, the current fluctuation information of the roller mill, and the target belt machine current; according to the roller-abrasive Determine the target current adjustment parameter according to the matching result of the gravity fluctuation information, the roller mill current fluctuation information and the preset fluctuation interval, and determine the target belt machine current setting according to the target belt machine current and the target current adjustment parameter value; the target belt conveyor current setting value is sent to the target belt conveyor control terminal, so that the target belt conveyor operates according to the target belt conveyor current setting value, which greatly reduces the material-to-weight ratio and the current value of the roller mill. The fluctuation range reduces the labor cost, and at the same time, ensures the accuracy of the control, thereby greatly improving the operation stability and product qualification rate of the roller mill.

Further, as an implementation of the method shown in FIG. 1 above, an embodiment of the present invention provides a high-pressure roller mill equipment parameter control system. As shown in FIG. 8 , the system includes: an edge industrial server 31 and a control terminal 32 .

The edge industrial server 31 is used to obtain the fluctuation information of the roller-abrasive gravity ratio and the current fluctuation information of the roller mill during the high-pressure roller grinding process;

The edge industrial server 31 is also used to determine the target current adjustment parameter according to the fluctuation information of the roller-abrasive weight ratio, the matching result of the current fluctuation information of the roller mill and the preset fluctuation interval, and determine the target current adjustment parameter according to the target belt conveyor The current and the target current adjustment parameters determine the target belt conveyor current setting value;

The edge industrial server 31 is also used to send the target belt conveyor current setting value to the target belt conveyor control terminal, so that the target belt conveyor operates according to the target belt conveyor current setting value;

The control terminal 32 is configured to receive the target belt conveyor current setting value sent by the edge industrial server, and control the roller mill to operate according to the target belt conveyor current setting value.

Further, the edge industrial server includes:

The first determination module is configured to: if the current fluctuation state of the roller mill is normal, and the fluctuation state of the abrasive weight ratio of the roller is abnormal, then according to the difference between the fluctuation value of the abrasive weight ratio of the roller and the fluctuation interval of the abrasive weight ratio of the roller Matching results to determine the target current adjustment parameters;

The second determination module is configured to determine a target current adjustment parameter according to a matching result of the roller mill current fluctuation value and the roller mill current fluctuation interval if the roller mill current fluctuation state is abnormal.

Further, in a specific application scenario, the roller-abrasive weight ratio fluctuation interval and the roller mill current fluctuation interval respectively include at least five positive fluctuation intervals and five negative fluctuation intervals;

The first positive fluctuation interval is smaller than the second positive fluctuation interval, the second positive fluctuation interval is smaller than the third positive fluctuation interval, the third positive fluctuation interval is smaller than the fourth positive fluctuation interval, and the fourth positive fluctuation interval is smaller than the first positive fluctuation interval. Five positive fluctuation intervals;

The first negative fluctuation interval is larger than the second negative fluctuation interval, the second negative fluctuation interval is larger than the third negative fluctuation interval, the third negative fluctuation interval is larger than the fourth negative fluctuation interval, and the fourth negative fluctuation interval is larger than the first negative fluctuation interval. Five negative fluctuation intervals.

further,

The first determining module is further configured to acquire the first The current adjustment parameter is used as the target current adjustment parameter;

The first determining module is further configured to obtain a second positive roller abrasive gravity ratio fluctuation interval if the roller abrasive gravity ratio fluctuation value matches the second positive roller abrasive gravity ratio fluctuation interval or the second negative roller abrasive gravity ratio fluctuation interval. The current adjustment parameter is used as the target current adjustment parameter;

The first determination module is further configured to obtain the third The current adjustment parameter is used as the target current adjustment parameter;

The first determination module is further configured to obtain the fourth if the fluctuation value of the abrasive weight ratio of the roller matches the fluctuation interval of the fourth positive roller abrasive gravity ratio or the fourth negative roller abrasive gravity ratio fluctuation interval. The current adjustment parameter is used as the target current adjustment parameter;

The first determination module is further configured to obtain the fifth if the fluctuation value of the abrasive gravity ratio of the roller matches the fluctuation interval of the fifth positive roller abrasive gravity ratio or the fifth negative roller abrasive gravity ratio fluctuation interval. The current adjustment parameter is used as the target current adjustment parameter;

The second determining module is further configured to obtain the first current if the roller mill current fluctuation value matches the first positive roller mill current fluctuation interval or the first negative roller mill current fluctuation interval. The adjustment parameter is used as the target current adjustment parameter;

The second determination module is further configured to obtain the second roller mill current fluctuation interval if the roller mill current fluctuation value matches the second positive roller mill current fluctuation interval or the second negative roller mill current fluctuation interval. The current adjustment parameter is used as the target current adjustment parameter;

The second determination module is further configured to obtain the third roller mill current fluctuation interval if the roller mill current fluctuation value matches the third positive roller mill current fluctuation interval or the third negative roller mill current fluctuation interval. The current adjustment parameter is used as the target current adjustment parameter;

Wherein, the first current adjustment parameter is smaller than the second current adjustment parameter, the second current adjustment parameter is smaller than the third current adjustment parameter, and the third current adjustment parameter is smaller than the fourth current adjustment parameter, The fourth current adjustment parameter is smaller than the fifth current adjustment parameter.

The edge industrial server includes:

The first calculation module is used to calculate the sum of the target belt conveyor current and the target current adjustment parameter to obtain the target belt conveyor current setting value if the fluctuation value of the roller-abrasive weight ratio matches the positive fluctuation interval ;

The second calculation module is used to obtain the target belt conveyor current setting value by calculating the difference between the target belt conveyor current and the target current adjustment parameter if the roller-abrasive weight ratio fluctuation value matches the negative fluctuation interval ;

The third calculation module is used to obtain the target belt machine current setting value by calculating the difference between the target belt machine current and the target current adjustment parameter if the roller mill current fluctuation value matches the positive fluctuation interval ;

The fourth calculation module is used to calculate the sum of the target belt conveyor current and the target current adjustment parameter to obtain the target belt conveyor current setting value if the roller mill current fluctuation value matches the negative fluctuation interval .

further,

The edge industrial server is further configured to use the minimum set value of the roller mill current as the target belt conveyor current if the difference between the target belt conveyor current and the target current adjustment parameter is less than the minimum set value of the roller mill current. Machine current set value;

The edge industrial server is further configured to use the maximum current setting value of the roller mill as the target belt conveyor current if the sum of the target belt conveyor current and the target current adjustment parameter is greater than the maximum setting value of the roller mill current. Motor current setting value.

Further, the system also includes:

The data acquisition module is used to obtain the initial output material weight, the initial return material weight, and the initial roller mill current of the high-pressure roller mill process, and to analyze the initial output material weight, the initial return material weight, and the The initial roller mill current is filtered to obtain the output material weight, return material weight and roller mill current;

The data acquisition module is also used to determine the ratio of roller abrasive weight according to the ratio of the weight of the returned material to the weight of the output material;

A state determining module, configured to determine the fluctuation information of the roller abrasive gravity ratio according to the roller abrasive gravity ratio, and determine the roller mill current fluctuation information according to the roller mill current, and the roller abrasive gravity ratio fluctuation information includes the roller abrasive gravity ratio Fluctuation value, roller mill current fluctuation state, the roller mill current fluctuation information includes roller mill current fluctuation value, roller mill current fluctuation state.

The state determination module is also used to determine the fluctuation value of the roller abrasive weight ratio by calculating the difference between the roller abrasive weight ratio and the preset target roller abrasive weight ratio, and calculate the roller mill current and the preset target The difference value of the current of the roller mill determines the fluctuation value of the current of the roller mill;

The state determination module is also used to determine that the roller abrasive weight ratio fluctuation state is normal if the absolute value of the roller abrasive weight ratio fluctuation value is less than or equal to the roller abrasive weight ratio fluctuation value, and if the roller abrasive weight ratio fluctuation value The absolute value of is greater than the roller abrasive gravity ratio fluctuation threshold, then it is determined that the roller abrasive gravity ratio fluctuation state is abnormal;

The state determining module is further configured to determine that the current fluctuation state of the roller mill is normal if the absolute value of the roller mill current fluctuation value is less than or equal to the roller mill current fluctuation threshold, and if the roller mill current fluctuation value If the absolute value of is greater than the roller mill current fluctuation threshold, it is determined that the roller mill current fluctuation state is abnormal.

Further, in a specific application scenario, the current fluctuation information of the roller mill includes the current fluctuation information of the fixed roll and the current fluctuation information of the moving roll, and the current fluctuation information of the fixed roll and the current fluctuation information of the moving roll match the same predetermined Set a fluctuation range.

In a specific application scenario, the system may also include a cloud server. The cloud server is mainly responsible for data storage. When the edge industrial server obtains the data from the control terminal, it uploads the data to the cloud server for storage after filtering. When the intelligent operation controller issues a new command, it first needs to send the write command to the control terminal, and the control terminal issues the command. Thereby ensuring the reliability of the whole system.

In a specific application scenario, the edge industrial server can virtualize 2 non-real-time systems. In the non-real-time system 1, the Win10 system is installed with Python and MySQL software for the development of the operation control system. The system includes data acquisition, data storage, Data processing and intelligent operation control functions. The Interwell system is configured in the non-real-time system 2, and the built-in KyOPS software is used for the development of the process control system, which includes real-time database and process monitoring. At the same time, WinCC software and Step7 software are installed in the operator station to be responsible for the development of the underlying loop control algorithm and the development of the process control monitoring interface respectively.

The present invention provides a high-pressure roller mill equipment parameter control system. The embodiment of the present invention acquires the fluctuation information of the roller-abrasive weight ratio in the high-pressure roller mill process, the current fluctuation information of the roller mill, and the target belt machine current; according to the roller-abrasive Determine the target current adjustment parameter according to the matching result of the gravity fluctuation information, the roller mill current fluctuation information and the preset fluctuation interval, and determine the target belt machine current setting according to the target belt machine current and the target current adjustment parameter value; the target belt conveyor current setting value is sent to the target belt conveyor control terminal, so that the target belt conveyor operates according to the target belt conveyor current setting value, which greatly reduces the material-to-weight ratio and the current value of the roller mill. The fluctuation range reduces the labor cost, and at the same time, ensures the accuracy of the control, thereby greatly improving the operation stability and product qualification rate of the roller mill.

Obviously, those skilled in the art should understand that each module or each step of the above-mentioned present invention can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network formed by multiple computing devices Alternatively, they may be implemented in program code executable by a computing device so that they may be stored in a storage device to be executed by a computing device, and in some cases in an order different from that shown here The steps shown or described are carried out, or they are separately fabricated into individual integrated circuit modules, or multiple modules or steps among them are fabricated into a single integrated circuit module for implementation. As such, the present invention is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. A method for controlling equipment parameters in a high-pressure roller mill is characterized by comprising the following steps:

acquiring roller grinding material weight ratio fluctuation information, roller mill current fluctuation information and target belt conveyor current in the high-pressure roller grinding process;

determining a target current adjustment parameter according to the matching result of the roller grinding material weight ratio fluctuation information, the roller mill current fluctuation information and a preset fluctuation interval, and determining a target belt machine current set value according to the target belt machine current and the target current adjustment parameter;

sending the current set value of the target belt conveyor to a control terminal of the target belt conveyor so that the target belt conveyor operates according to the current set value of the target belt conveyor;

before the obtaining of the roller mill material weight ratio fluctuation information and the roller mill current fluctuation information in the high-pressure roller milling process, the method further comprises the following steps:

acquiring initial product material weight, initial return material weight and initial roller mill current in a high-pressure roller milling process, and filtering the initial product material weight, the initial return material weight and the initial roller mill current to obtain product material weight, return material weight and roller mill current;

determining the weight ratio of the grinding materials of the roller according to the proportion of the returning materials to the produced materials;

determining roller grinding material weight ratio fluctuation information according to the roller grinding material weight ratio, and determining roller grinding machine current fluctuation information according to the roller grinding material current, wherein the roller grinding material weight ratio fluctuation information comprises a roller grinding material weight ratio fluctuation value and a roller grinding material weight ratio fluctuation state, and the roller grinding machine current fluctuation information comprises a roller grinding machine current fluctuation value and a roller grinding machine current fluctuation state.

2. The method of claim 1, wherein the roller-grinding-material-weight-ratio fluctuation information includes a roller-grinding-material-weight-ratio fluctuation value and a roller-grinding-material-weight-ratio fluctuation state, the roller-grinding-machine current fluctuation information includes a roller-grinding-machine current fluctuation value and a roller-grinding-machine current fluctuation state, the preset fluctuation interval includes a roller-grinding-material-weight-ratio fluctuation interval and a roller-grinding-machine current fluctuation interval, and the determining the target current adjustment parameter according to the roller-grinding-material-weight-ratio fluctuation information and the matching result of the roller-grinding-machine current fluctuation information and the preset fluctuation interval includes:

if the current fluctuation state of the roller mill is normal and the roller mill material weight ratio fluctuation state is abnormal, determining a target current adjustment parameter according to a matching result of the roller mill material weight ratio fluctuation value and the roller mill material weight ratio fluctuation interval;

and if the current fluctuation state of the roller mill is abnormal, determining a target current adjustment parameter according to a matching result of the current fluctuation value of the roller mill and the current fluctuation interval of the roller mill.

3. The method according to claim 2, characterized in that the roller grinding material weight ratio fluctuation interval and the roller mill current fluctuation interval respectively comprise at least five positive-direction fluctuation intervals and five negative-direction fluctuation intervals;

the first forward fluctuation interval is smaller than the second forward fluctuation interval, the second forward fluctuation interval is smaller than the third forward fluctuation interval, the third forward fluctuation interval is smaller than the fourth forward fluctuation interval, and the fourth forward fluctuation interval is smaller than the fifth forward fluctuation interval;

the first negative-direction fluctuation interval is larger than the second negative-direction fluctuation interval, the second negative-direction fluctuation interval is larger than the third negative-direction fluctuation interval, the third negative-direction fluctuation interval is larger than the fourth negative-direction fluctuation interval, and the fourth negative-direction fluctuation interval is larger than the fifth negative-direction fluctuation interval.

4. The method of claim 3, wherein the determining a target current adjustment parameter according to the matching result of the fluctuation value of the material weight ratio of the roller and the fluctuation interval of the material weight ratio of the roller comprises:

if the rolling mill material weight ratio fluctuation value is matched with a first positive fluctuation interval of the positive rolling mill material weight ratio fluctuation interval or a first negative fluctuation interval of the negative rolling mill material weight ratio fluctuation interval, acquiring a first current adjustment parameter as a target current adjustment parameter;

if the rolling mill material weight ratio fluctuation value is matched with a second positive fluctuation area of the positive rolling mill material weight ratio fluctuation interval or a second negative fluctuation area of the negative rolling mill material weight ratio fluctuation interval, acquiring a second current adjustment parameter as a target current adjustment parameter;

if the rolling mill material weight ratio fluctuation value is matched with a third positive fluctuation interval of the positive rolling mill material weight ratio fluctuation interval or a third negative fluctuation interval of the negative rolling mill material weight ratio fluctuation interval, acquiring a third current adjustment parameter as a target current adjustment parameter;

if the rolling mill material weight ratio fluctuation value is matched with a fourth positive fluctuation interval of the positive rolling mill material weight ratio fluctuation interval or a fourth negative fluctuation interval of the negative rolling mill material weight ratio fluctuation interval, acquiring a fourth current adjustment parameter as a target current adjustment parameter;

if the rolling mill material weight ratio fluctuation value is matched with a fifth positive fluctuation area of the positive rolling mill material weight ratio fluctuation interval or a fifth negative fluctuation area of the negative rolling mill material weight ratio fluctuation interval, acquiring a fifth current adjustment parameter as a target current adjustment parameter;

determining a target current adjustment parameter according to the matching result of the roller mill current fluctuation value and the roller mill current fluctuation interval, wherein the target current adjustment parameter comprises the following steps:

if the roller mill current fluctuation value is matched with a first positive fluctuation interval of the positive roller mill current fluctuation interval or a first negative fluctuation interval of the negative roller mill current fluctuation interval, acquiring a first current adjustment parameter as a target current adjustment parameter;

if the roller mill current fluctuation value is matched with a second positive fluctuation area of the positive roller mill current fluctuation area or a second negative fluctuation area of the negative roller mill current fluctuation area, acquiring a second current adjustment parameter as a target current adjustment parameter;

if the roller mill current fluctuation value is matched with a third positive fluctuation interval of the positive roller mill current fluctuation interval or a third negative fluctuation interval of the negative roller mill current fluctuation interval, acquiring a third current adjustment parameter as a target current adjustment parameter;

if the roller mill current fluctuation value is matched with a fourth positive fluctuation interval of the positive roller mill current fluctuation interval or a fourth negative fluctuation interval of the negative roller mill current fluctuation interval, acquiring a fourth current adjustment parameter as a target current adjustment parameter;

if the roller mill current fluctuation value is matched with a fifth positive fluctuation interval of the positive roller mill current fluctuation interval or a fifth negative fluctuation interval of the negative roller mill current fluctuation interval, acquiring a fifth current adjustment parameter as a target current adjustment parameter;

the first current adjustment parameter is smaller than the second current adjustment parameter, the second current adjustment parameter is smaller than the third current adjustment parameter, the third current adjustment parameter is smaller than the fourth current adjustment parameter, and the fourth current adjustment parameter is smaller than the fifth current adjustment parameter.

5. The method of claim 1, wherein the roller abrasive-to-weight ratio fluctuation information comprises a roller abrasive-to-weight ratio fluctuation value, the roller mill current fluctuation information comprises a roller mill current fluctuation value, the preset fluctuation interval comprises a positive fluctuation interval and a negative fluctuation interval, and the determining the target belt conveyor current set value according to the target belt conveyor current and the target current adjustment parameter comprises:

if the weight ratio fluctuation value of the roller grinding material is matched with a forward fluctuation interval, summing the target belt conveyor current and the target current adjustment parameter to obtain a target belt conveyor current set value;

if the weight ratio fluctuation value of the roller grinding material is matched with a negative fluctuation interval, obtaining a target belt conveyor current set value by calculating the difference value of the target belt conveyor current and the target current adjustment parameter;

if the current fluctuation value of the roller mill is matched with a forward fluctuation interval, obtaining a current set value of the target belt conveyor by calculating the difference value of the current of the target belt conveyor and the target current adjustment parameter;

and if the current fluctuation value of the roller mill is matched with a negative fluctuation interval, summing the target belt conveyor current and the target current adjustment parameter to obtain a target belt conveyor current set value.

6. The method of claim 5, wherein after determining a target belt conveyor current set point based on the target current adjustment parameter, the method further comprises:

if the difference between the target belt conveyor current and the target current adjustment parameter is smaller than the minimum roller mill current set value, taking the minimum roller mill current set value as a target belt conveyor current set value;

and if the sum of the target belt conveyor current and the target current adjustment parameter is larger than the maximum roller mill current set value, taking the maximum roller mill current set value as the target belt conveyor current set value.

7. The method of claim 1, wherein determining roller mill charge weight ratio fluctuation information from the roller mill charge weight ratio and roller mill current fluctuation information from the roller mill current comprises:

determining the fluctuation value of the grinding material weight ratio of the roller by calculating the difference value of the grinding material weight ratio of the roller and the preset target grinding material weight ratio of the roller, and determining the fluctuation value of the current of the roller by calculating the difference value of the current of the roller and the preset target roller;

if the absolute value of the fluctuation value of the weight ratio of the roller grinding material is smaller than or equal to the fluctuation threshold value of the weight ratio of the roller grinding material, determining that the fluctuation state of the weight ratio of the roller grinding material is normal, and if the absolute value of the fluctuation value of the weight ratio of the roller grinding material is larger than the fluctuation threshold value of the weight ratio of the roller grinding material, determining that the fluctuation state of the weight ratio of the roller grinding material is abnormal;

and if the absolute value of the current fluctuation value of the roller mill is smaller than or equal to the current fluctuation threshold value of the roller mill, determining that the current fluctuation state of the roller mill is normal, and if the absolute value of the current fluctuation value of the roller mill is larger than the current fluctuation threshold value of the roller mill, determining that the current fluctuation state of the roller mill is abnormal.

8. The method of claim 1, characterized in that the current fluctuation information of the roller mill comprises fixed roller current fluctuation information and moving roller current fluctuation information, and the fixed roller current fluctuation information and the moving roller current fluctuation information are matched with the same preset fluctuation interval.

9. A system for controlling the parameters of equipment in a high-pressure roller mill is characterized by comprising: an edge industrial server and a control terminal;

the edge industrial server is used for acquiring the roller grinding material weight ratio fluctuation information, the roller mill current fluctuation information and the target belt conveyor current in the high-pressure roller grinding process;

the edge industrial server is further used for determining a target current adjustment parameter according to the matching result of the roller mill material weight ratio fluctuation information, the roller mill current fluctuation information and a preset fluctuation interval, and determining a target belt machine current set value according to the target belt machine current and the target current adjustment parameter;

the edge industrial server is also used for sending the current set value of the target belt conveyor to a control terminal of the target belt conveyor so as to enable the target belt conveyor to operate according to the current set value of the target belt conveyor;

the control terminal is used for receiving the current set value of the target belt conveyor sent by the edge industrial server and controlling the roller mill to operate according to the current set value of the target belt conveyor;

the data acquisition module is used for acquiring the initial product material weight, the initial return material weight and the initial roller mill current in the high-pressure roller milling process, and filtering the initial product material weight, the initial return material weight and the initial roller mill current to obtain the product material weight, the return material weight and the roller mill current;

the data acquisition module is also used for determining the material weight ratio of the roller mill according to the proportion of the returned material to the produced material;

and the state determining module is used for determining roller grinding material weight ratio fluctuation information according to the roller grinding material weight ratio and determining roller grinding machine current fluctuation information according to the roller grinding machine current, wherein the roller grinding material weight ratio fluctuation information comprises a roller grinding material weight ratio fluctuation value and a roller grinding material weight ratio fluctuation state, and the roller grinding machine current fluctuation information comprises a roller grinding machine current fluctuation value and a roller grinding machine current fluctuation state.

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