[1]JIANG Wen,LI Shao-yuan.Real time tuning of the set-point softening factor for model predictive controllers[J].CAAI Transactions on Intelligent Systems,2009,4(5):433-440.[doi:10.3969/j.issn.1673-4785.2009.05.008]
Copy

Real time tuning of the set-point softening factor for model predictive controllers

CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume: 4 Number of periods: 2009 5 Page number: 433-440 Column: 学术论文—智能系统 Public date: 2009-10-25
Title:
Real time tuning of the set-point softening factor for model predictive controllers
Author(s):
JIANG Wen;  LI Shao-yuan
Department of Automation, Shanghai Jiao Tong University, Shanghai 200240, China
Keywords:
model predictive control;  condition number of system matrix;  setpoint softening factor;  online tuning
CLC:
TP273
DOI:
10.3969/j.issn.1673-4785.2009.05.008
Abstract:
For predictive control, the tuning of weighting factor λ and set-point softening factor α greatly influences the performance of control systems. Tuning of? λ ?in a model predictive controller had negative effects on the regulation of overshoot and ascending time of the system. Moreover,? λ has an effect on the condition number of the system matrix. Thus, λ has a great effect on the robustness of the system when model mismatch occurs. Set-point softening factor?λ also has a large effect on the dynamic response of the control system. Tuning of both α and λ produces similar effects on the dynamic response of the control system. Hence, in order to achieve better control performance, λ was designed to satisfy the need of the condition number and α was assigned as an online tuning parameter. Simulations verified the effectiveness of this approach.
References:
［1］席裕庚．预测控制［M］．北京：国防工业出版社，1993: 1-30.
［2］CLARKE D W, MOHTADI C, TUFFS P S. Generalized predictive control-part I. The basic algorithm［J］. Automatica, 1987, 23(2): 137-148.
［3］CLARKE D W, MOHTADI C, TUFFS P S. Generalized predictive control-part II. Extensions and interpretations［J］. Automatica， 1987, 23(2): 149-160.
［4］CLARKE D W, MOHTADI C. Properties of generalized predictive control［J］. Automatica, 1989, 25: 859-875.
［5］RAWLINGS J, MUSKE K. The stability of constrained receding horizon control［J］. IEEE Transactions on Automatic Control, 1993, 38(10): 1512-1516.
［6］LEE J H, YU Z H. Tuning of model predictive controllers for robust performance［J］. Computers & Chemical Engineering, 1994, 18(1): 15-37.
［7］SHRIDHAR R, COOPER D J. A tuning strategy for unconstrained SISO model predictive control［J］. Industrial and Engineering Chemistry Research, 1997, 36: 729-746.
［8］SHRIDHAR R，COOPER D J. A novel tuning strategy for multivariable model predictive control［J］. ISA Transactions, 1998, 36(4): 273-280.
［9］TRIERWEILER J O, ENGELL S. The robust performance number: a new control tool for control structure design［J］. Computers & Chemical Engineering, 1997, 21(S1): 409-414.
［10］TRIERWEILER J O, FARINA L A. RPN tuning strategy for model predictive control［J］. Journal of Process Control, 2003, 13(7): 591-598.
［11］ABU-AYYAD M, DUBAY R, KEMBER G C. SISO extended predictive controlformulation and the basic algorithm［J］. ISA Transactions, 2006, 45(1): 9-20.
［12］DUBAY R, ABUAYYAD M. Properties of extended predictive control［J］. ISA Transactions, 2007, 46(1): 103-110.
［13］AL-GHAZZAWI A, ALI E, NOUH A, et al. Online tuning strategy for model predictive controllers［J］. Journal of Process Control, 2001, 11(3): 265-284.
［14］ALI E. Heuristic on-line tuning for nonlinear model predictive controllers using fuzzy logic［J］. Journal of Process Control, 2003, 13(5): 383-396.
［15］李少远，杜国宁．基于模糊满意度的广义预测控制器参数的在线调整［J］．控制与决策，2002，17(6): 852-862.
?LI Shaoyuan, DU Guoning. On-line parameter tuning of generalized predictive controller based on fuzzy satisfying degree function［J］. Control and Decsion, 2002, 17(6): 852-862.
［16］丁宝苍．预测控制的理论与方法［M］．北京：机械工业出版社，2008: 1-25.
［17］ROUHANI R, MEHRA R K. Model predictive algorithmic control (MAC): basic theoretical properties［J］. Automatica, 1982, 18(4): 404-414.
［18］OU Jing, RHINEHART R R. CV damping versus MV suppression for MPC tuning［C］// Proceedings of American Control Conference. Anchorage, USA, 2002: 2695-2700.
Similar References:

Memo

-

Last Update: 2009-12-29

Copyright © CAAI Transactions on Intelligent Systems