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| 1 | 非线性系统神经网络预测控制研究进展显示文摘神经网络由于其在非线性系统建模与优化求解方面的优势,被广泛应用于预测控制中,形成了各种各样的神经网络预测控制算法.本文系统地评述了非线性系统神经网络预测控制系统中的模型选取、控制器优化、控制系统结构设计以及收敛性理论等研究现状,分析了非线性系统神经网络预测控制算法存在的问题和今后的研究方向. | 戴文战 娄海川 杨爱萍 | 2009 | 控制理论与应用2009，26，5： | 51 |
| 2 | Dynamics and Predictive Control of Gas Phase Propylene Polymerization in Fluidized Bed Reactors显示文摘A two-phase dynamic model,describing gas phase propylene polymerization in a fluidized bed reactor,was used to explore the dynamic behavior and process control of the polypropylene production rate and reactor temperature.The open loop analysis revealed the nonlinear behavior of the polypropylene fluidized bed reactor,justifying the use of an advanced control algorithm for efficient control of the process variables.In this case,a centralized model predictive control(MPC) technique was implemented to control the polypropylene production rate and reactor temperature by manipulating the catalyst feed rate and cooling water flow rate respectively.The corresponding MPC controller was able to track changes in the setpoint smoothly for the reactor temperature and production rate while the setpoint tracking of the conventional proportional-integral(PI) controller was oscillatory with overshoots and obvious interaction between the reactor temperature and production rate loops.The MPC was able to produce controller moves which not only were well within the specified input constraints for both control variables,but also non-aggressive and sufficiently smooth for practical implementations.Furthermore,the closed loop dynamic simulations indicated that the speed of rejecting the process disturbances for the MPC controller were also acceptable for both controlled variables. | Ahmad Shamiri Mohamed azlan Hussain Farouq sabri Mjalli Navid Mostoufi Seyedahmad Hajimolana~ | 2013 | Chinese Journal of Chemical Engineering2013，21，9： | 4 |
| 3 | Modeling and Simulation of Ethylene Polymerization in Industrial Slurry Reactor Series显示文摘A five-site comprehensive mathematical model was developed to simulate the steady-state behavior of industrial slurry polymerization of ethylene in multistage continuous stirred tank reactors. More specifically, the effects of various operating conditions (i.e., inflow rates of catalyst, hydrogen and comonomer) on the molecular structure and properties of polyethylene (i.e.,Mw,Mn, polydispersity index (IPD), melt index, density, etc.) are fully assessed. It is shown that the proposed comprehensive model is capable of simulating the steady-state operation of an industrial slurry stirred tank reactor series. It is demonstrated that changing the catalyst flow rate, changes simultaneously the mean residence-time in both reactors, which plays a significant role on the establishment of polyethylene architecture properties such as molecular mass and IPD. The melt index and density of polyethylene are mainly controlled by hydrogen and comonomer concentration, respectively. | 孟伟娟 李建伟 陈标华 李洪泊 | 2013 | Chinese Journal of Chemical Engineering2013，21，8： | 4 |
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