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An automatic batching control method and system for multi-level blanking and dynamic correction monitoring

A technology of dynamic correction and control method, applied in the direction of control/regulation system, non-electric variable control, flow control, etc., can solve the problems of affecting batching accuracy, low batching accuracy, slow feeding speed, etc., to improve production efficiency, improve The level of system automation and the effect of reducing labor intensity

Active Publication Date: 2019-03-08
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual production process, the batching control has the following shortcomings: the traditional automatic batching control method, the batching weighing process is a relatively cumbersome process, the feeding speed is slow, and the batching accuracy is low
Moreover, it is not easy to control the advance amount of the material in the silo, and it is easy to produce out-of-tolerance, which affects the batching accuracy

Method used

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  • An automatic batching control method and system for multi-level blanking and dynamic correction monitoring
  • An automatic batching control method and system for multi-level blanking and dynamic correction monitoring
  • An automatic batching control method and system for multi-level blanking and dynamic correction monitoring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Such as figure 1 As shown, the automatic batching control system for multi-level blanking and dynamic correction monitoring provided in this embodiment uses automatic batching and weighing control equipment to realize automatic batching and weighing control. The equipment includes silo 1, vibrating feeder 2, Feeder driving motor 3, weighing bucket 4, weighing instrument 5, vibrating screen 6, vibrating screen driving motor 7 and controller;

[0082] Wherein, the silo 1 is used for loading material particles, and a material level gauge is installed inside the silo 1 for detecting the material level height in the silo.

[0083] The vibrating feeder 2 is installed at the bottom of the silo 1, when the vibrating feeder 2 is started, the material falls from the silo 1 into the weighing bucket 4.

[0084] The feeder driving motor 3 is installed next to the vibrating feeder 2, and adjusting the rotating speed of the feeder driving motor 3 can change the vibration frequency of...

Embodiment 2

[0100] This embodiment provides an automatic batching control method for multi-level blanking and dynamic correction monitoring, including the following steps:

[0101] S1: Set the batching and blanking speed, set the batching and blanking times and set the batching and blanking target value;

[0102] S2: start cutting;

[0103] S3: Weighing the actual value W of batching and cutting Act ;

[0104] S4: Use the high-speed / low-speed blanking control method for blanking;

[0105] S5: After the high-speed / low-speed blanking is completed, if the stable weight W is weighed R When the weight target threshold r1 and r2 are reached, the blanking ends;

[0106] S6: After the high-speed / low-speed blanking is completed, if the stable weight W is weighed R If it does not reach the weight target threshold between r1 and r2, use the jog blanking control method for blanking, and continue to weigh the actual value W of the batching blanking Act ;

[0107] S7: After the blanking is finis...

Embodiment 3

[0141] In this embodiment, the high / low speed feeding control model is used to realize the precise control of batching weighing: when feeding at high speed, the weight of the material is close to the target value; when feeding at low speed, the precise control of batching weighing is realized. Dynamic correction is performed at the high / low speed switch point P1 and the blanking stop point P2; the weighing accuracy of low-speed blanking is compensated by using the jog blanking method, such as Figure 5 and Figure 6 as shown, Figure 5 Dynamic correction diagram for high / low speed switching point P1; Figure 6 It is a schematic diagram of the dynamic correction of the high / low speed switching point P1 and the blanking stop point P2; the meanings of the parameters in the figure are as follows:

[0142] t1: high speed feeding time; t2: high / low speed switching time; t3: low speed feeding time; t4: feeding stop stabilization time; t6: actual feeding time; t7: high / low speed swi...

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Abstract

The invention discloses a multi-stage blanking and dynamically corrected monitoring type automatic batching control method. The method comprises the steps of firstly, setting the blanking speed of ingredients, the blanking times of ingredients and the blanking target value of ingredients; starting the blanking process; weighing the blanking practical value WAct of the ingredients; conducting the blanking in the high-speed / low-speed blanking control method; after the high-speed / low-speed blanking process, on the condition that the weighing stabilized weight WR is between a target threshold r1 and a target threshold r2, stopping the current blanking process; on the condition that the weighing stabilized weight WR is not between the target threshold r1 and the target threshold r2, starting the blanking process in the inching type blanking control manner, and continuing to weigh the blanking practical value WAct of the ingredients; finally stopping the current blanking process and dynamically correcting the weight P1 at a high-speed / low-speed switching point and the weight P2 at a blanking stop point; circularly repeating the above steps till the preset blanking times of the blanking process are completed. According to the technical scheme of the invention, the high-precision automatic control of the batching and blanking process is realized. Meanwhile, the production efficiency and the batching and weighing accuracy are improved. The labor intensity is reduced and the automation level of the system is improved.

Description

technical field [0001] The invention relates to the technical field of automatic batching production technology in fine chemical plants, in particular to an automatic batching control method for multi-stage feeding and dynamic correction monitoring. Background technique [0002] The automatic ingredient weighing system is a very important process in the production process of a fine chemical factory. The speed and accuracy of ingredient weighing play a decisive role in the efficiency and product quality of the entire production line. The automatic batching control process is a multi-input and multi-output system. Each batching conveying line is coordinated and controlled according to the preset formula ratio. The control system needs to monitor and adjust the material level and flow accurately and timely. In the actual production process, the batching control has the following shortcomings: the traditional automatic batching control method, the batching weighing process is a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D7/06
CPCG05D7/0635
Inventor 廖雪超刘振兴沈丹丹
Owner WUHAN UNIV OF SCI & TECH