Ender D. Process control performance: Not as good as you think[J]. Control Engineering, 1993, 40:180-190. [2]Jelali M. An overview of control performance assessment technology and industrial applications[J], Cont. Eng. Pract. 2006,14: 441–466. [3]Horch A. Dumont G, Guest editorial. Special issue for control loop performance assessment[J], International journal of adaptive control and signal processing, 2003,17:523-525. [4]Harris T J. Boudreau F, MacGregor J F. Performance assessment using of multivariable feedback controllers[J], Automatica. 1996,23:1505-1518. [5]Huang B, Shah S L, Fujii H. The unitary interactor matrix and its estimation using closed-loop data[J], J. Process Control. 1997,7:195-207 [6]Yuan Qiaolin, Lennox Barry, McEwan Matthew. Analysis of multivariable control performance assessment techniques[J], Journal of Process Control. 2009, 19:751–760. [7]Ko B S, Edgar T F. Performance assessment of multivariable feedback control systems[J], Automatica. 2001,37:899-905. [8]Kadali R, Huang B. Multivariate control performance assessment without interactor matrix[J], IFAC Advanced control of chemical processes, 2003:61–66. [9]Huang B, Ding S.X, Thornhill N.F. Practical solutions to multivariate feedback control performance assessment problem: Reduced a prior knowledge of interactor matrices[J], Journal of Process Control 2005,15: 573–583. [10]Yu Jie, Qin S J. MIMO control performance monitoring using left/right diagonal interactors[J], Journal of Process Control, 2009. [11]Eriksson P G, Isaksson A J. Some aspect of control loop performance monitoring[J], Conference on Control Applications, Glasgow, Scotland, UK, 1994,2:1029-1034. [12]Huang B, Shah S L. Practical issues in multivariable feedback control performance assessment[J], Journal of Process Control, 1998, 8: 421-430. [13]Huang B, Shah S. L, Kwok K. Y., Good, bad or optimal? Performance assessment of MIMO processes[J], Automatica 1997, 33 (6) 1175–1183.