Multi-level dosing and preact self-adaption correcting automatic batch control model
Xuechao Liao1, 2, Zhenxing Liu3
COMPUTER MODELLING & NEW TECHNOLOGIES 2014 18(4) 226-231
1 College of Computer Science, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
2 Hubei Province Key Laboratory of Intelligent Information Processing and Real-time Industrial System, Wuhan 430081, P. R. China
3 College of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
The process flow and system structure of automatic batch weighing system are presented. In order to increase production speed and dosing accuracy, the multi-level dosing control model (high/low speed dosing + inching dosing) is designed. Besides, the inching dosing mode is adopted to accurately compensate the weight deviation. In order to solve the problem that the fall of materials in-air cannot be easily controlled and out of tolerance. The multi-level dosing control model and preact will correct after each dosing dynamically with iteration method, moreover, the target value is predicted with second-order estimator, so as to increase the dosing speed with high weighing accuracy. The successful application proves that the control model can realize the rapid and accurate control of batch weighing process and has quite favourable control and reliability.