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Linkage control method for multi-stage solid conveying equipment

A technology for conveying equipment and solids, which is applied in the direction of conveyor control devices, conveyor objects, transportation and packaging, etc., and can solve the problems of overflowing material consumption, unfavorable transmission equipment energy, slow response speed, etc.

Active Publication Date: 2016-08-10
依泰可(诸暨)智能装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reaction speed is slow. On the one hand, it is easy to cause a certain level of conveying equipment to overflow and increase the material consumption. On the other hand, it is not conducive to saving the energy of the conveying equipment.

Method used

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  • Linkage control method for multi-stage solid conveying equipment
  • Linkage control method for multi-stage solid conveying equipment
  • Linkage control method for multi-stage solid conveying equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: PID Controller

[0037] For the lowest-level conveying equipment, the flow signal is used as the controlled variable, and the speed is used as the manipulated variable to build a PID controller to realize the fixed value control of its flow. The parameters are set as follows: the ratio (P) needs to be adjusted according to the characteristics of the equipment, the integral time (I) should be between 1-10 seconds, and the differential time (D) should be between 0-5 seconds.

[0038] For the upper-level conveying equipment, the load of the lower-level conveying equipment is used as the controlled variable, and the speed of the adjacent upper-level conveying equipment is used as the manipulated variable to build a PID controller to realize the fixed value control of the load and connect them in turn. The parameters are set as follows: the ratio (P) needs to be adjusted according to the characteristics of the equipment, the integral time (I) should be between 100...

Embodiment 2

[0041] Example 2. Model Predictive Control

[0042] For the lowest-level conveying equipment, the flow signal is used as the controlled variable, and the speed is used as the manipulated variable to construct the MPC controller to realize the fixed value control of its flow. Its model should be a first-order model, determined by a step test.

[0043] For the upper-level conveying equipment, the load of the lower-level conveying equipment is used as the controlled variable, and the speed of the adjacent upper-level conveying equipment is used as the manipulated variable, and the MPC controller is constructed to realize the fixed value control of the load. Its model shall adopt integral model and be determined by step test.

[0044] As a preference, the flow rate of the lower-level conveying equipment can be used as a feed-forward signal of the load of the local conveying equipment and introduced into the control system to enhance the stability of the load signal control.

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Abstract

The invention discloses a linkage control method for multi-stage solid conveying equipment. The loading signal of lower-stage conveying equipment is adopted as the controlled variable for controlling the rotation speed of upper-stage conveying equipment, and PID control or model prediction control over the relation between the loading signal of the lower-stage conveying equipment and the rotation speed of the upper-stage conveying equipment is adopted. The method is easy to implement and high in control accuracy. According to the control effect of applying the linkage control method to a cement plant, the flow fluctuation of conveying equipment is obviously reduced, the control accuracy is obviously improved, the emptiness condition and the fullness condition are completely eradicated, and material consumption and energy waste are obviously reduced.

Description

technical field [0001] The patent of the present invention relates to the field of automatic control, in particular to a linkage control method for multi-stage solid conveying equipment. Background technique [0002] In the industrial production of chemical industry, metallurgy, building materials, coal, etc., when it comes to solid transportation, due to various factors such as long distance and impact resistance, the transportation of solids is often designed as multi-stage transportation, such as figure 1 shown. Multi-stage conveying sometimes uses the same equipment, such as multi-stage belt conveyor for coal powder conveying, sometimes uses different equipment, such as the combination of apron feeder and belt conveyor, the combination of spiral cutter and belt conveyor, etc. . [0003] As far as industrial production is concerned, it is generally desired that the conveying amount of solids can be adjusted, which can be realized by adjusting the speed of the conveying ...

Claims

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Application Information

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IPC IPC(8): B65G43/10
CPCB65G43/10
Inventor 欧丹林梁逸敏董旭欧阳昆翔
Owner 依泰可(诸暨)智能装备有限公司
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