Control strategy of disc braking systems for downward belt conveyors

Reliability of braking systems is a key requirement to ensure the safety of in using downward belt conveyor brakes. By analyzing and comparing three commonly used braking velocity curves, we conclude that the Harrison curve is the best. Given the characteristics of a downward belt conveyor, we studi...

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Bibliographic Details
Published in:Mining science and technology (China) 2011-07, Vol.21 (4), p.491-494
Main Authors: Hou, Youfu, Xie, Fangwei, Huang, Fei
Format: Article
Language:English
Subjects:
Belt conveyors
Brakes
Braking
Control strategy
Control systems
Disc braking system
Discs
Downward belt conveyor
Harrison velocity curve
MATLAB
Optimal PID
Optimization
PID控制
Proportional integral derivative
Simulation
Simulink
下运带式输送机
多功能试验台
控制策略
盘式制动系统
速度曲线
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Summary:Reliability of braking systems is a key requirement to ensure the safety of in using downward belt conveyor brakes. By analyzing and comparing three commonly used braking velocity curves, we conclude that the Harrison curve is the best. Given the characteristics of a downward belt conveyor, we studied the control in a closed-loop velocity, a conventional PID method and an optimal PID control method. We used MATLAB/Simulink to simulate the three control methods. Our simulation results show that opti- mal PID control is especially suitable for disc braking systems. To verif!/the results from theoretical anal- ysis and simulation, a multifunctional test-bed was developed to simulate the braking process of a disc brake system. Our experimental results demonstrate that the optimal PID control can make the output velocity to follow a preset velocity correctly with only small fluctuations, meeting the requirements of a flexible brake for a belt conveyor.
ISSN:1674-5264
2212-6066
DOI:10.1016/j.mstc.2011.06.005