Design and simulation of robust ball grinding mill control system

2009 ◽  
Author(s):  
Jie Su ◽  
Xin-gang Zhang ◽  
Xin Zeng ◽  
Yong-le Cui
Keyword(s):  
Control System ◽  
Mill Control ◽  
Grinding Mill

Autogenous grinding mill process control practices

2021 ◽  
pp. 38-42
Author(s):  
S. S. Khaymovskiy
Keyword(s):  
Control System ◽  
Process Control ◽  
Estimation Accuracy ◽  
Stable Operation ◽  
Motor Power ◽  
Ball Mills ◽  
Power Draw ◽  
Mill Charge ◽  
Mill Control ◽  
Grinding Mill

This paper considers pre-requisite conditions for developing grinding mill control systems and describes the main problems of control and existing constraints. The author selected a set of grinding equipment that consists of autogenous grinding mills and ball mills. The paper considers the selected mill types as control objects. It is shown that there exists a good correlation between the mill charge and its acoustic and vibration noise. The paper examines the relationship between the level of vibroacoustic noise and the mill motor power draw and defines what can be considered an extreme dependence, as well as the conditions in which a stable operation of the automatic system can be maintained excluding the mill overload mode. The paper specifies what hardware and software means would be necessary to implement such system and describes the mill charge analyzer VAZM-1M developed by Soyuztsvetmetavtomatika that was selected for this application. The author looks at certain downsides typical of the conventional control scheme when the head mill feed rate changes as the mill motor power draw changes without allowing for changing physical and mechanical properties of the ore material. The author also considers the capability of the VAZM-1M analyzer in terms of mill load estimation accuracy. This laid the basis for developing mill protection and optimization algorithms for the AG and Ball Mill comminution circuit. The paper features a block diagram of the control algorithm and its brief description. The algorithm consists of blocks, which are responsible for the following actions: they receive key process parameters from the process control system database, check them for validity, perform initial processing and filtering; after that they analyze the trends of the measured parameters and analyze if an overload condition is probable. As decided by the mill operator, the ore flow rate can be adjusted. The paper describes a case study of running an AG mill control system on the basis of the above described algorithm and using the VAZM-1M analyzer. It is noted that this algorithm can be implemented both as an adviser for the operator and for automatic control of the mill when running in overload mode.

The Design of Ball Mill Control System Base on Two-Cell Immune Controller

2011 ◽  
Vol 308-310 ◽  
pp. 1106-1110
Author(s):  
Gui Li Yuan ◽  
Yan Guang Xue
Keyword(s):  
Control System ◽  
Ball Mill ◽  
Dynamic Performance ◽  
Thermal Power ◽  
Engineering Application ◽  
Fast Response ◽  
Control Effect ◽  
Immune Control ◽  
Static Performance ◽  
Mill Control

Currently, Ball Mill is most used coal grinding equipment of pulverizing system of thermal power plant in China. Because of this system is multivariable, strong-coupling and serious time-delay, and it also has nonlinear, time-varying and distributed parameter characteristics. It is naturally difficult to be effective for such kind system to use PID regulation law and design multi-variable system by single-loop. So try more intelligent control for this kind system. Immune Control has fast response and robustness, especially; the Two-cell Immune Control has integration and memory characteristics, and improve the system to better control effect. It is particularly suitable for solving practical engineering application problems with robustness, adaptability and requirements of dynamic performance. So this paper use Two-cell Immune Control for the Ball Mill Control System, and make a large number of simulation experiments about rated parameter, non-rated parameter and adding disturbance situation, it has made a good dynamic and static performance under various conditions. These results confirm the validity of the design of Ball Mill Control System base on Two-cell Immune Controller.

scholarly journals Design and Realization Of Roller Mill Control System

2012 ◽  
Vol 33 ◽  
pp. 437-443
Author(s):  
QianHong Wang ◽  
Qiang Zhang ◽  
XiaoLi Bai ◽  
HongLiang Yu
Keyword(s):  
Control System ◽  
Roller Mill ◽  
Mill Control

DSPACE Implication of HILS for Mill Control System

2012 ◽  
Vol 233 ◽  
pp. 123-130
Author(s):  
Wei Zhang ◽  
Yu Ming Wang
Keyword(s):  
Control System ◽  
Real Time ◽  
Rolling Mill ◽  
Closed Loop ◽  
Object Model ◽  
The Real ◽  
Experimental Platform ◽  
Time Simulation ◽  
Time Test ◽  
Mill Control

Dspace HILS platform is used to realize the real-time test of the mill control system.In this platform, a real controller is the part of the control system. DSPACE real-time simulation and computer real-time running control the object model to virtual out a rolling mill, which realizes the mill the real-time closed-loop test of control system.Yanshan University 300 reversible rolling mill as the object of experimental platform is established and verifies the feasibility and validity of the simulation platform.

Sign in / Sign up

Export Citation Format

Share Document