Overshoot compensation control method and overshoot compensation control system for material in mixing plant

A compensation control, mixing station technology, applied in the fields of mixing operation control, chemical instruments and methods, mixing operation control devices, etc., can solve the problem of inability to accurately express the overshoot value, etc., to improve quality, improve dynamic accuracy, and improve accuracy. degree of effect

Active Publication Date: 2012-10-03
XUZHOU XCMG MAINTENANCE MACHINERY CO LTD
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Problems solved by technology

[0006] The general method of estimating the overshoot in the prior art is as follows: always assume that the overshoot is fixed, however, the system generally uses a piston pump, the operation of the air compressor is intermittent, and the pressure in

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  • Overshoot compensation control method and overshoot compensation control system for material in mixing plant
  • Overshoot compensation control method and overshoot compensation control system for material in mixing plant
  • Overshoot compensation control method and overshoot compensation control system for material in mixing plant

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[0032] The core of the present invention is to provide an overshoot compensation method for a mixing station, which can compensate the overshoot according to the real-time conditions of the system and improve the accuracy of material weighing.

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the overshoot compensation control method and control system of the mixing station, the drawings and specific embodiments.

[0034] Without loss of generality, this technical solution is introduced by taking the compensation of overshoot in the batching of an asphalt mixing plant as an example. Those skilled in the art should understand that the technical solution provided herein can also be applied to batching systems of other materials.

[0035] Please refer to figure 1 , image 3 , figure 1 It is a flow chart of the overshoot compensation...

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Abstract

The invention discloses an overshoot compensation control method and an overshoot compensation control system for material in a mixing plant. The overshoot compensation control method comprises the following step: pre-establishing a material flow coefficient K1, a material gate operating speed K2 and a corresponding relation table for overshoot values; selecting an overshoot value of the current state from the corresponding relation table by detecting a material flow coefficient K1 when the weighing of the material is about to finish and a material gate operating speed K2 when the material gate is closed, and according to a material flow coefficient K1 and a material gate operating speed K2 corresponding to the current time; and setting the overshoot value as the compensation value for calculating weighing hopper and material weight. According to the method, the material flow condition and the material gate operating speed can be detected promptly; and a proper overshoot value is selected from the corresponding relation table according to real situation to serve as the compensation value of the current overshoot value. The method provided by the invention has the advantage that the material weighing dynamic accuracy is improved to a great extent, so as to improve batching accuracy and product quality.

Description

technical field [0001] The invention relates to the technical field of batching precision control of a mixing station, in particular to a control method and a control system for overshoot compensation of materials in a mixing station. Background technique [0002] Asphalt mixing plant is a typical mixing plant system for producing asphalt mixture. It mixes various aggregates, mineral powder, and asphalt according to the required ratio to obtain asphalt product ingredients that meet the use standards. [0003] In the prior art, asphalt product ingredients are generally dynamically weighed and measured by the automatic control system of the mixing station for various materials (stones, sand, mineral powder, recycled powder, asphalt, additives, etc.) according to the formula, and then sent to the mixing station. Tank mixing into asphalt mixture. It consists of subsystems such as storage, primary distribution, drying, lifting, screening, batching, mixing, and finished material ...

Claims

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Application Information

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IPC IPC(8): B28C7/04
Inventor 李家春李明超韩尤舜郭柏甫范振华李友腾杜文涛
Owner XUZHOU XCMG MAINTENANCE MACHINERY CO LTD
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