作者:李新春,何春明(北京和利時系統工程有限公司,北京 100176)
摘要:連續攪拌反應釜CSTR廣泛應用于化工、燃料、制藥等生產過程,由于其機理復雜、多變量耦合、非線性強,CSTR過程的常規控制難于取得理想效果。本文在一類通用的CSTR非線性機理模型基礎上應用EMPC控制策略,針對不同生產場景定義了相應的優化指標。在考慮質量、安全等多種約束的條件下,直接基于非線性模型進行預測和優化,解決了CSTR過程的優化控制問題,并在多種控制模式下驗證了控制算法的有效性。
關鍵詞:MPC;EMPC; 優化;CSTR;非線性
Abstract: CSTR is widely used in chemical, fuel, pharmaceutical and other processes. Due to its complex mechanism, multivariable coupling and strong nonlinearity, traditional control of CSTR
is difficult to achieve ideal results. In this paper, based on a general CSTR nonlinear mechanism model, Economic Model Predictive Control (EMPC) control strategy is applied to define the corresponding optimization indexes for different production scenarios. Under the condition of considering the quality, safety and other constraints, the prediction and optimization are directly based on the nonlinear model, which solves the optimization control problem of CSTR process, and verifies the effectiveness of the control algorithm under various control modes.
Key words: MPC; EMPC; Optimization; CSTR; Nonlinear
在線預覽:基于EMPC的CSTR過程優化控制仿真
摘自《自動化博覽》2020年5月刊