Disturbance-resistant control device and method in ore-grinding and classifying process

Abstract

The invention discloses a disturbance-resistant control device and a disturbance-resistant control method in an ore-grinding and classifying process. The disturbance-resistant control device comprises a programmable logic controller, a pump pond water outlet pipeline flowmeter, a pump pond water inlet pipeline flowmeter, a belt weigher, a liquid indicator, a grading analyzer, an electric ear, a concentration meter, an adjusting valve, a rock feeder frequency converter and a monitoring computer, wherein the programmable logic controller comprises an analog quantity input module, a central processing unit (CPU) module and an analog quantity output module. The disturbance-resistant control device and the disturbance-resistant control method have the advantages of effectively solving the control problems such as disturbance, coupling and model mismatching and the like in a whole class of industrial process, improving the control property of an automatic control system, contributing to reducing the costs of enterprise development and extension and equipment maintenance and updating, greatly increasing enterprise economic benefit, avoiding manual operation in a hostile production field,reducing labor intensity of workers and improving the working environment.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to an anti-disturbance control device and method for grinding and grading processes. Background technique [0002] The grinding and grading process is a key process in the mineral processing production process of the metallurgical industry. This process is a continuation of the crushing and screening process. Its purpose is to separate all or most of the useful components in the ore to monomer separation (micron level) through grinding, and at the same time avoid "over-crushing" as much as possible to achieve sorting operations (such as flotation, magnetic separation) to create conditions for the sorting operation to effectively recover the useful components in the ore. [0003] The traditional grinding and grading process is controlled by the grinding operator using the method of "touching, listening and seeing". The disadvantage is that the requirements for the operator...

AI Technical Summary

Problems solved by technology

[0003] The traditional grinding and grading process is controlled by the grinding operator using the method of "touching, listening and seeing". The disadvantage is that the requirements for operators are relatively high, and production safety and product quality cannot be guaranteed

With the development of control theory, advanced control based on decentralized single input / output has been widely used in the grinding and grading process. Various internal and external disturbances and the coupling between channels make it difficult for advanced control algorithms to achieve good control results in actual grinding classification control

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