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Ball mill load parameter soft measuring method

A load parameter and ball mill technology, applied in the field of soft sensor, can solve the problems of soft sensor model performance deterioration and achieve important practical value

Inactive Publication Date: 2018-05-18
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0007] The invention provides a soft measurement method for ball mill load parameters, which overcomes the deficiencies in the prior art, and provides a soft measurement method for ball mill load parameters based on multi-working-condition migration learning, which is used to solve the soft-sensing model under multi-working conditions The problem of deteriorating performance

Method used

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  • Ball mill load parameter soft measuring method

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Embodiment Construction

[0035] Such as figure 1 Shown, a kind of ball mill load parameter soft measurement method of the present invention comprises the following steps:

[0036] S100. Define the load parameters of the ball mill as labels, record known labels, collect auxiliary variables under known label working conditions, auxiliary variables under unknown label working conditions, and form known labels and auxiliary variables under known label working conditions The field of modeling data is used as the source domain, and the field of real-time data formed by unknown labels and auxiliary variables under unknown label working conditions is used as the target domain; auxiliary variables are selected from the vibration signal on the wall of the ball mill or the bearing, and the vibration signal around the roller of the ball mill .

[0037] S200. Preprocessing the auxiliary variables through FFT to obtain source domain data and target domain data where n s Indicates the number of samples in the so...

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Abstract

The invention relates to a ball mill load parameter soft measuring method and belongs to the technical field of soft measurement. The invention provides a ball mill load parameter soft measuring method based on multi-state transfer learning, comprising: recording a known label of a ball mill, acquiring auxiliary variables under the known and unknown labels, subjecting the acquired auxiliary variables to FFT, combining and modeling a data input Xs and a real-time data input Xt to obtain X, unitizing the label Ys in the source domain to obtain Ysa, subjecting the X and the Ysa to dimension reduction by a joint distribution adaptive method to obtain a new feature representation Z, dividing Z into a source domain feature Zs and a target domain feature Zt, normalizing the label Ys in source domain data to obtain Ysy, training a multitask-LS SVM model with Zs and Ysy, and predicting the Zt using the model. The ball mill load parameter soft measuring method is applied to the field of soft measurement.

Description

technical field [0001] The invention relates to a soft measurement method for a load parameter of a ball mill, which belongs to the technical field of soft measurement. Background technique [0002] Ball mill is a kind of basic equipment widely used in ore grinding, electric power and metallurgy industries, and its load variable (including ball-to-material ratio, grinding concentration and filling rate) is an important parameter in the working process of the mill. In the industrial process, timely adjust the ball loading and feeding volume of the mill, so that the mill can run stably at the optimal load point, avoiding the phenomenon of full grinding, empty grinding and grinding blocking, which has a great impact on the grinding quality, the working efficiency of the ball mill and the equipment. Safety is decisive. However, when the ball mill is working normally, the cylinder will keep rotating and bring the steel balls and materials to a certain height and then fall down. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00
CPCG01M99/005
Inventor 阎高伟程兰支恩玮续欣莹乔铁柱
Owner TAIYUAN UNIV OF TECH
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