A predictive control method for cement combined grinding based on bang‑bang control

Abstract

The invention provides a cement combined-grinding prediction control method based on Bang-Bang control. The Bang-Bang control process is employed for mixing operation experiences such as observation, waiting, determination and adjusting of an operator into a control algorithm, the tracking error convergence rate is accelerated, and the system overshoot is reduced, and thus the combined-grinding system production process has good stability and the precise rapid control purpose is reached. Aiming at cement mill load control, LPV (Linear Parameter-Varying) prediction control is applied to solve control problems of variation and nondeterminacy of parameters of a linear time-varying system, and enable the system to have good robustness.

Description

A Predictive Control Method of Cement Combined Grinding Based on Bang-Bang Control technical field The invention belongs to the technical field of automatic control, in particular to a predictive control method for combined cement grinding based on Bang-Bang control. Background technique In cement production, the cement clinker grinding system is a crucial link, and its control effect is directly related to the quality and output of cement production. With the increasing maturity of the grinding process, the combined grinding system is widely used. The control of most domestic combined grinding systems is mostly done manually by operators. Under the manual control mode, problems such as the collapse of the steady flow bin, the full grinding of the ball mill and the empty grinding of the ball mill, the tripping of the hoist when the current is too high, and the weight of the ore powder bin are often caused, resulting in the particle size of the cement product not meeting t...

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Problems solved by technology

The purpose of the present invention is to provide a predictive control method for cement combined grinding based on Bang-Bang control that can control the main control points of the combined grinding system in real time, continuously and accurately, aiming at solving the problem of the current production process of the combined grinding system The deficiencies in pure hysteresis, large inertia, multivariable and non-linearity of operator manual operation in

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