一种基于初始闭环系统的性能评估方法

谢磊; 冯皓; 张建明

doi:10.3724/SP.J.1004.2013.00649

一种基于初始闭环系统的性能评估方法

doi: 10.3724/SP.J.1004.2013.00649 cstr: 32138.14.SP.J.1004.2013.00649

1.
浙江大学智能系统与控制研究所杭州 310027

详细信息

通讯作者:
张建明

计量
- 文章访问数: 1265
- HTML全文浏览量: 77
- PDF下载量: 1156
- 被引次数: 0
出版历程
- 收稿日期: 2012-05-15
- 修回日期: 2012-07-22
- 刊出日期: 2013-05-20

A New Approach to Performance Assessment Based on Initial-closed-system

1.
Institute of Cyber-Systems and Control, Zhejiang University, Hangzhou 310027

摘要

摘要: 基于初始闭环系统的输出方差和最小方差指标, 提出了一种新的性能评估方法. 在过程时滞变化的情况下, 基于最小方差指标的评估可能会得到错误的结论, 而新的方法可以避免这一缺点. 扩展的性能指标以控制器投运后的初始状态作为零基准, 能够更准确地反映操作工系统性能的变化, 能够很好地替代最小方差指标. 利用交互矩阵可将扩展指标推广到多变量系统的评估中, 本文将这一算法应用于精馏塔过程的评估. 精馏塔过程的仿真示例验证了方法的有效性, 表明过程时滞变化时用扩展指标来进行评估更能反映系统性能的变化.
- 性能评估 /
- 初始闭环系统 /
- 最小方差指标 /
- 精馏塔
Abstract: This article proposes a new approach to performance assessment based on initial-closed-system and minimum variance index. When the time delay of a process becomes shorter, assessment based on minimum variance index may draw a wrong conclusion, while the new approach can avoid this disadvantage. A generalized index that chooses the initial performance of closed-system as zero-point can give operators more exact result about how the performance of system changes and can substitute for the minimum variance index effectively. By the interactor matrix, the generalized index can be extended for multivariable systems. This article applies the approach to performance assessment of a distillation columns process. Simulation result of distillation columns process shows the validity of this method, indicating that the generalized index should be used for assessment when the time delay of the process becomes shorter.
- Performance assessment, initial-closed-system, minimum variance index, distillation columns /

HTML全文

参考文献(1)

[1]

Harris T J. Assessment of control loop performance. The Canadian Journal of Chemical Engineering, 1989, 67(5): 856 -861[2] Tyler M L, Morari M. Performance monitoring of control systems using likelihood methods. Automatica, 1996, 32(8): 1145-1162[3] Harris T J, Boudreau F, Macgregor J F. Performance assessment of multivariable feedback controllers. Automatica, 1996, 32(11): 1505-1518[4] Huang B, Shah S L. Practical issues in multivariable feedback control performance assessment. Journal of Process Control, 1998, 8(5-6): 421-430[5] Huang B, Shah S L, Fujii H. The unitary interactor matrix and its estimation using closed-loop data. Journal of Process Control, 1997, 7(3): 195-207[6] Xu F W, Huang B, Tamayo E C. Performance assessment of MIMO control systems with time-variant disturbance dynamics. Computers and Chemical Engineering, 2008, 32(9): 2144-2154[7] Bezergianni S, Georgakis C. Controller performance assessment based on minimum and open-loop output variance. Control Engineering Practice, 2000, 8(7): 791-797[8] Wang X, Huang B, Chen T. Multirate minimum variance control design and control performance assessment: a data-driven subspace approach. IEEE Transactions on Control Systems Technology, 2007, 15(1): 65-74[9] Bezergianni S, zkan L. On the assessment of multivariable controllers using closed loop data, Part I: Identification of system models. Journal of Process Control, 2012, 22(1): 125 -131[10] Huang B, Shah S L. Performance Assessment of Control Loops: Theory and Applications. UK: Springer-Verlag, 1999.[11] Kadali R, Huang B. Controller performance analysis with LQG benchmark obtained under closed loop conditions. ISA Transactions, 2002, 41(4): 521-537[12] Xu Q L, Zhao C, Zhang D F, An A M, Zhang C. Data-driven LQG benchmaking for economic performance assessment of advanced process control systems. In: Proceedings of the 2011 American Control Conference. San Francisco, USA, IEEE: 2011. 5085-5090[13] Grimble M J. Controller performance benchmarking and tuning using generalised minimum variance control. Automatica, 2002, 38(12): 2111-2119[14] Tian X M, Chen G Q, Chen S. A data-based approach for multivariate model predictive control performance monitoring. Neurocomputing, 2011, 74(4): 588-597[15] Luyben W L. Realistic models for distillation columns with partial condensers producing both liquid and vapor products. Industrial and Engineering Chemistry Research, 2012, 51(24): 8334-8339

施引文献

资源附件(0)

访问统计