CN113304867A - Intelligent efficient crushing, shaping and level-adjusting PID logic control method for coarse crushing workshop of sand and stone processing factory - Google Patents
Intelligent efficient crushing, shaping and level-adjusting PID logic control method for coarse crushing workshop of sand and stone processing factory Download PDFInfo
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- CN113304867A CN113304867A CN202110731805.3A CN202110731805A CN113304867A CN 113304867 A CN113304867 A CN 113304867A CN 202110731805 A CN202110731805 A CN 202110731805A CN 113304867 A CN113304867 A CN 113304867A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000012545 processing Methods 0.000 title claims abstract description 24
- 239000004576 sand Substances 0.000 title claims abstract description 22
- 238000007493 shaping process Methods 0.000 title claims abstract description 22
- 239000004575 stone Substances 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 238000009825 accumulation Methods 0.000 claims description 12
- 230000002159 abnormal effect Effects 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 9
- 238000013459 approach Methods 0.000 claims description 6
- 239000002390 adhesive tape Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 230000004069 differentiation Effects 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/02—Feeding devices
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention provides an intelligent efficient crushing, shaping and level-adjusting PID logic control method for a coarse crushing workshop of a sand and stone processing plant; the PID control module acquires the operation information of the feeding and crushing equipment through the signal acquisition module, judges whether the operation condition of the feeding and crushing equipment meets the operation of the optimal working condition or not, and adjusts and controls the operation of the feeding and crushing equipment through the control execution mechanism. The invention can obtain the best running state of the crushing equipment and the feeding equipment, and control the crushing equipment to realize the highest throughput. According to the invention, the remote monitoring is realized by using the modern Internet of things technology, the field operation condition and data can be known remotely, the information sharing is realized, the production department is prevented from being isolated from other departments to form an information isolated island, and the real-time performance of the system operation is improved; the intelligent PID control system can effectively improve the production yield, achieve the maximum ideal production state and reduce the enterprise cost, and the control system and the method thereof realize the simultaneous feeding and the optimal feeding configuration of a plurality of feeders.
Description
Technical Field
The invention relates to an intelligent efficient crushing, shaping and level-adjusting PID logic control method for a coarse crushing workshop of a sand and stone processing plant.
Background
In the mine crushing production, the control of the equipment mainly has three modes, and the first mode is a manual operation control flow. The second way is to use an intelligent control system, such as a single chip system, a PLC system, an industrial personal computer system and other control processes. The third mode is that an intelligent control system is used as a main control unit, a PID algorithm of the intelligent control system is used or a PID controller (hereinafter, referred to as a PID controller) is directly used for controlling feeding, so that the motor always operates under a certain load rate.
The existing mine production mostly adopts a manual operation control flow, the yield is controlled in a manual mode when the yield is controlled, and an operator cannot well control a production line with a complex structure. The yield and the productivity are greatly wasted. The second and third intelligent control systems control the process, although on-site PID control can be realized to control production, the process control is performed under one-to-one condition, and the manual control is still strongly relied on in the face of complicated many-to-one conditions.
Disclosure of Invention
In order to solve the technical problem, the invention provides an intelligent high-efficiency crushing, shaping and level-adjusting PID logic control method for a coarse crushing workshop of a sand and stone processing plant.
The invention is realized by the following technical scheme.
The invention provides an intelligent efficient crushing, shaping and level-adjusting PID logic control method for a coarse crushing workshop of a sand and stone processing plant; the PID control module acquires the operation information of the feeding and crushing equipment through the signal acquisition module, judges whether the operation condition of the feeding and crushing equipment meets the operation of the optimal working condition or not, and adjusts and controls the operation of the feeding and crushing equipment through the control execution mechanism.
The intelligent efficient crushing, shaping and level-adjusting PID logic control method for the coarse crushing workshop of the sand processing plant according to claim 1; the signal acquisition module comprises a three-phase active power meter and is used for acquiring active power of a feeding belt of the crusher and active power of a discharging belt of the crusher; the current transformer is used for collecting the current of the crusher motor and the feeder; the camera and the charge level indicator are used for collecting the load of the discharging adhesive tape machine; the vibration sensor is used for acquiring the vibration frequency of the feeder; the control execution mechanism controls the feeding speed of each feeder by a frequency converter.
The intelligent efficient crushing, shaping and level-adjusting PID logic control method for the coarse crushing workshop of the sand processing plant according to claim 1; the control method comprises a normal production process and an abnormal production process; in the normal production process, the PID controls the linear relation between the frequency of the feeder, the feeding amount and the current of the crusher, and in the abnormal production process, the frequency of the feeder changes and the current of the crusher changes greatly.
The intelligent efficient crushing, shaping and level-adjusting PID logic control method for the coarse crushing workshop of the sand processing plant according to claim 3; the normal production process comprises the following steps:
1) firstly feeding a feeding machine controlled by a frequency converter with an initial frequency f 0;
2) and after the crusher runs for a fixed time delta t, calculating the average load current I of the crusher, and adjusting the frequency of the feeder to enable the average load current I of the crusher to approach a specified value.
The abnormal production process comprises the following steps:
1) firstly feeding a feeding machine controlled by a frequency converter with an initial frequency f 0;
2) and after the crusher runs for a fixed time delta t, calculating the average load current I of the crusher, and adjusting the frequency of the feeder to enable the average load current I of the crusher to approach a specified value.
And 3, if the average load current I of the crusher and the frequency of the feeder do not linearly change in the adjusting process, returning the camera image and the information of the level indicator to the control room to perform sound-light alarm and voice prompt.
And the feeder frequency is proportional coefficient deviation + error positive accumulation of time from 0 to t + error negative accumulation of time from 0 to t.
And the current of the crusher is proportional coefficient deviation plus the positive accumulation of the error between 0 and t times plus the negative accumulation of the error between 0 and t times.
The PID control logic is u (t) ═ kp (e (t) +1/Ti ^ e (t) dt + Td ^ de (t)/dt), u (t) is an output curve, kp is a proportionality coefficient, e (t) is a deviation curve, Ti is an integration time, and Td is a differentiation time.
The invention has the beneficial effects that: the optimal operating conditions of the crushing plant and the feeding plant can be obtained and the crushing plant is controlled to achieve the highest throughput. According to the invention, the remote monitoring is realized by using the modern Internet of things technology, the field operation condition and data can be known remotely, the information sharing is realized, the production department is prevented from being isolated from other departments to form an information isolated island, and the real-time performance of the system operation is improved; the intelligent PID control system can effectively improve the production yield, achieve the maximum ideal production state and reduce the enterprise cost, and the control system and the method thereof realize the simultaneous feeding and the optimal feeding configuration of a plurality of feeders.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
An intelligent efficient crushing, shaping and level-adjusting PID logic control method for a coarse crushing workshop of a sand and stone processing plant; the PID control module acquires the operation information of the feeding and crushing equipment through the signal acquisition module, judges whether the operation condition of the feeding and crushing equipment meets the operation of the optimal working condition or not, and adjusts and controls the operation of the feeding and crushing equipment through the control execution mechanism.
The intelligent efficient crushing, shaping and level-adjusting PID logic control method for the coarse crushing workshop of the sand processing plant according to claim 1; the signal acquisition module comprises a three-phase active power meter and is used for acquiring active power of a feeding belt of the crusher and active power of a discharging belt of the crusher; the current transformer is used for collecting the current of the crusher motor and the feeder; the camera and the charge level indicator are used for collecting the load of the discharging adhesive tape machine; the vibration sensor is used for acquiring the vibration frequency of the feeder; the control execution mechanism controls the feeding speed of each feeder by a frequency converter.
The intelligent efficient crushing, shaping and level-adjusting PID logic control method for the coarse crushing workshop of the sand processing plant according to claim 1; the control method comprises a normal production process and an abnormal production process; in the normal production process, the PID controls the linear relation between the frequency of the feeder, the feeding amount and the current of the crusher, and in the abnormal production process, the frequency of the feeder changes and the current of the crusher changes greatly.
The intelligent efficient crushing, shaping and level-adjusting PID logic control method for the coarse crushing workshop of the sand processing plant according to claim 3; the normal production process comprises the following steps:
1) firstly feeding a feeding machine controlled by a frequency converter with an initial frequency f 0;
2) and after the crusher runs for a fixed time delta t, calculating the average load current I of the crusher, and adjusting the frequency of the feeder to enable the average load current I of the crusher to approach a specified value.
The abnormal production process comprises the following steps:
1) firstly feeding a feeding machine controlled by a frequency converter with an initial frequency f 0;
2) and after the crusher runs for a fixed time delta t, calculating the average load current I of the crusher, and adjusting the frequency of the feeder to enable the average load current I of the crusher to approach a specified value.
And 3, if the average load current I of the crusher and the frequency of the feeder do not linearly change in the adjusting process, returning the camera image and the information of the level indicator to the control room to perform sound-light alarm and voice prompt.
And the feeder frequency is proportional coefficient deviation + error positive accumulation of time from 0 to t + error negative accumulation of time from 0 to t.
And the current of the crusher is proportional coefficient deviation plus the positive accumulation of the error between 0 and t times plus the negative accumulation of the error between 0 and t times.
The PID control logic is u (t) ═ kp (e (t) +1/Ti ^ e (t) dt + Td ^ de (t)/dt), u (t) is an output curve, kp is a proportionality coefficient, e (t) is a deviation curve, Ti is an integration time, and Td is a differentiation time.
The balanced production of the sandstone processing workshop is mainly characterized in that equipment in the coarse crushing workshop is controlled and monitored through parameters such as quality information of mine incoming materials, frequency and current of a rod feeder, current of a crusher, weight of a discharging belt scale, current of a discharging belt conveyor, images of a camera at the top of the crusher, data of a material level meter and the like, so that loads carried by the equipment are always in the best production working condition running state. The specific control principle is as follows:
(1) the production flow is under normal conditions: the frequency of the bar feeder is in linear relation with the feeding amount and the current, the frequency is increased, the corresponding current and the feeding amount are increased, when the feeding amount is increased, the load of the crusher is increased, the current of the crusher is increased, meanwhile, the load and the current of the discharging adhesive tape machine are also increased, and otherwise, the frequency is reduced. The device has the advantages that the utilization rate of the device is highest and the energy-saving effect is best only by adjusting the frequency of the bar feeder to enable the currents of the crusher and the belt conveyor to be within the upper limit and the lower limit of the operation under the best working condition.
The control room computer carries out logic calculation according to the acquired data to obtain the proportional relation between the processing capacity and the current, and the optimal working condition is that the equipment runs under the range of 80-90%. Setting the operation range process table of each equipment, making corresponding data logic table on the computer according to the range of the process table, and using the PID accurate calculation result by the computer for adjusting the whole process of the process. And performing recalculation on the correction parameters at an output port, sending an instruction, and automatically adjusting the operation parameters of the equipment to achieve the optimal operating condition of the equipment.
(2) And (3) under abnormal conditions of the production flow: in the operation process, when the frequency of the bar feeder is not changed and the current of the crusher is greatly changed, the production line is abnormal, and the general reasons are that the stone material entering the crusher port has larger grain diameter to generate blockage, the stone material bridges above the crusher port, the crusher does not have a full cavity to operate, and the like. The current of the crusher is increased due to material blockage, stone bridges above the opening of the crusher and the crusher runs without a full cavity, so that the crusher idles, and the current is reduced. When the computer detects that the frequency of the bar feeder does not correspond to the current of the crusher, and the images of the camera at the top of the crusher and the information of the level indicator are returned to the control room, acousto-optic alarm and voice prompt are carried out, so that the bar feeder is processed in time.
Example (b): the following gives the parameter proportional relationship of the feeder and the crusher in the normal production process.
Table one: example of proportional relation between conveying load capacity and frequency of bar feeder
Table two: example of the proportional relationship between crusher production weight and Current
Table three: example of the proportional relationship between the loading capacity of a tape machine and the current
Claims (9)
1. An intelligent efficient crushing, shaping and level-adjusting PID logic control method for a coarse crushing workshop of a sand and stone processing plant is characterized in that: the PID control module acquires the operation information of the feeding and crushing equipment through the signal acquisition module, judges whether the operation condition of the feeding and crushing equipment meets the operation of the optimal working condition or not, and adjusts and controls the operation of the feeding and crushing equipment through the control execution mechanism.
2. The intelligent efficient crushing, shaping and level-adjusting PID logic control method for the coarse crushing workshop of the sand processing plant as claimed in claim 1, characterized in that: the signal acquisition module comprises a three-phase active power meter and is used for acquiring active power of a feeding belt of the crusher and active power of a discharging belt of the crusher; the current transformer is used for collecting the current of the crusher motor and the feeder; the camera and the charge level indicator are used for collecting the load of the discharging adhesive tape machine; the vibration sensor is used for acquiring the vibration frequency of the feeder; the control execution mechanism controls the feeding speed of each feeder by a frequency converter.
3. The intelligent efficient crushing, shaping and level-adjusting PID logic control method for the coarse crushing workshop of the sand processing plant as claimed in claim 1, characterized in that: the control method comprises a normal production process and an abnormal production process; in the normal production process, the PID controls the linear relation between the frequency of the feeder, the feeding amount and the current of the crusher, and in the abnormal production process, the frequency of the feeder changes and the current of the crusher changes greatly.
4. The intelligent efficient crushing, shaping and level-adjusting PID logic control method for the coarse crushing workshop of the sand processing plant as claimed in claim 3, characterized in that: the normal production process comprises the following steps:
1) firstly feeding a feeding machine controlled by a frequency converter with an initial frequency f 0;
2) and after the crusher runs for a fixed time delta t, calculating the average load current I of the crusher, and adjusting the frequency of the feeder to enable the average load current I of the crusher to approach a specified value.
5. The intelligent efficient crushing, shaping and level-adjusting PID logic control method for the coarse crushing workshop of the sand processing plant as claimed in claim 3, characterized in that: the abnormal production process comprises the following steps:
1) firstly feeding a feeding machine controlled by a frequency converter with an initial frequency f 0;
2) and after the crusher runs for a fixed time delta t, calculating the average load current I of the crusher, and adjusting the frequency of the feeder to enable the average load current I of the crusher to approach a specified value.
3) If the average load current I of the crusher and the frequency of the feeder do not linearly change in the adjusting process, the camera image and the information of the level indicator are returned to the control room to generate acousto-optic alarm and voice prompt.
6. The intelligent efficient crushing, shaping and level-adjusting PID logic control method for the coarse crushing workshop of the sand processing plant as claimed in claim 1, characterized in that: and the feeder frequency is proportional coefficient deviation + error positive accumulation of time from 0 to t + error negative accumulation of time from 0 to t.
7. The intelligent efficient crushing, shaping and level-adjusting PID logic control method for the coarse crushing workshop of the sand processing plant as claimed in claim 1, characterized in that: and the current of the crusher is proportional coefficient deviation plus the positive accumulation of the error between 0 and t times plus the negative accumulation of the error between 0 and t times.
8. The intelligent efficient crushing, shaping and level-adjusting PID logic control method for the coarse crushing workshop of the sand processing plant as claimed in claim 1, characterized in that: the PID control logic is u (t) ═ kp (e (t) +1/Ti ^ e (t) dt + Td ^ de (t)/dt), u (t) is an output curve, kp is a proportionality coefficient, e (t) is a deviation curve, Ti is an integration time, and Td is a differentiation time.
9. The intelligent efficient crushing, shaping and level-adjusting PID logic control method for the coarse crushing workshop of the sand processing plant as claimed in claim 5, characterized in that: the specified current value is 80-90% of rated current.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113680514A (en) * | 2021-08-30 | 2021-11-23 | 贵州成智重工科技有限公司 | Automatic feeding adjusting and controlling method of crushing equipment |
| CN115041291A (en) * | 2022-06-14 | 2022-09-13 | 三一重型装备有限公司 | Control method, system, machine-made sand production device, readable storage medium and chip |
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