自动化学报2017，Vol.43Issue(6)：993-1006,14.DOI:10.16383/j.aas.2017.c170134
再磨过程的泵池液位和给矿压力双速率区间控制
Dual-rate Interval Control of Pump Pool Level and Feeding Pressure During Regrinding
摘要
Abstract
The regrinding process of hematite is a strong nonlinear cascade process with frequency of slurry pump as the input,feeding pressure as the inner loop output and sump level as the outer loop output.During its operation,frequent fluctuations of first stage grinding,magnetic separation slurry flowrate and discharge regrinded flowrate generated from the distribution of hematite particles which changes in a large range will cause large variations in the sump level and frequent fluctuation between inner and outer loop.In this paper,a novel dual-rate interval controller of sump level and feeding pressure is developed by representing the variations of dynamics characters as the unmodeled dynamics.In the proposed controller design,a compensation signal is constructed and added onto the control signal obtained from the linear deterministic model based on feedback control design.Such a compensation signal aims at eliminating the previous moment unmodeled dynamics.Meantime,the stability and convergence analysis of the proposed algorithm is given.A simulated experiment on the hardware-in-the-loop simulation system is conducteded,and it is shown that the sump level and the changing rate of feeding pressure in frequent random fluctuations can be well controlled inside their targeted ranges under the proposed control algorithm.关键词
再磨过程/未建模动态补偿/PI控制/双速率控制Key words
Regrinding process/unmodeled dynamic compensation/PI control/dual-rate control引用本文复制引用
王兰豪,贾瑶,柴天佑..再磨过程的泵池液位和给矿压力双速率区间控制[J].自动化学报,2017,43(6):993-1006,14.基金项目
国家高技术研究发展计划(863计划)(2015AA043802)资助 Supported by National High Technology Research and Development Program of China (863 Program) (2015AA043802) （863计划）
