Data processing: generic control systems or specific application – Generic control system – apparatus or process – Optimization or adaptive control
Reexamination Certificate
2006-04-04
2006-04-04
Follansbee, John (Department: 2154)
Data processing: generic control systems or specific application
Generic control system, apparatus or process
Optimization or adaptive control
C700S028000, C700S038000, C700S042000
Reexamination Certificate
active
07024253
ABSTRACT:
A method and apparatus for automatically adjusting the gains of a feedback controller while the process continues to run and the controller continues to operate and control the process is disclosed. A desired closed-loop control bandwidth and a target loop transfer function are specified by the operator, and the tuning is accomplished automatically with minimal operator intervention and without the need for developing a model of the process. The automatic tuner subjects the process to one or more disturbance and the operation of both the process and the controller are monitored.
REFERENCES:
patent: 4539633 (1985-09-01), Shigemasa et al.
patent: 4549123 (1985-10-01), Hagglund et al.
patent: 5223778 (1993-06-01), Svarovsky et al.
patent: 5371670 (1994-12-01), Lurie
patent: 5587899 (1996-12-01), Ho et al.
patent: 5748467 (1998-05-01), Qin et al.
patent: 5895596 (1999-04-01), Stoddard et al.
patent: 6207937 (2001-03-01), Stoddard et al.
patent: 6211495 (2001-04-01), Stoddard et al.
patent: 6222164 (2001-04-01), Stoddard et al.
patent: 6330484 (2001-12-01), Qin
Wang et al, “New frequency-domain method for PID controllers,” IEE Proc. Control Theory Appl., vol. 142, No. 4, Jul. 1995.
Grassi et al, “PID Controller Tuning by Frequency Loop-Shaping,” Proc. 35th Conference on Decision and Control, Japan, Dec. 1996.
Panagopoulos et al, “Design of PID Controllers Based on Constrained Optimization,” Proc. of the American Control Conf., California, Jun. 1999.
Astrom and Hagglund, “Autotuning”,Automatic Tuning of PID Controllers, ISA, pp. 105-132, 1998.
Shinskey, “Self-Tuning Controllers”,Feedback Controllers for the Process Industries, pp. 185-210, 1994.
E. Grassi, Proportional-Integral-Derivative Controller Tuning by Frequency Loop-Shaping, Ph.D. Dessertation, Arizona State University, Dec. 1999.
Voda et al., “A Method for the Auto-calibration of PID Controllers”, Automatica, vol. 31, No. 1, pp. 41-53, 1995.
Harris et al., “Controller Tuning Using Optimization to Meet Multiple Closed-Loop Criteria”, AIChE J., vol. 31, No. 3, pp. 484-487, 1985.
Schei, “Automatic Tuning of PID Controllers Based on Transfer Function Estimation”, Automatica, vol. 30, No. 12, pp. 1983-1989, 1994.
Nishikawa et al., “A Method for Auto-Tuning of PID Control Parameters”, Automatica, vol. 20, No. 3, pp. 321-332, 1984.
De Callafon et al., “Control Relevant Identification for H-norm based Performance Specifications”, Proc. 34thCDC, 3498-3503, 1995.
Gevers et al., “Issues in Modeling for Control”, Proc. 1998 ACC, 1615-1619.
Rivera et al., “Digital PID Conroller Tuning Using Prefiltered ARX Estimation”, Proc. 31stCDC, pp. 68-69, 1992.
Grassi et al., PID Controller Tuning by Frequency Loop Shaping, Proc. 35thCDC, 1996.
Adusumilli et al., “Integrated MIMO Identification and Robust PID Controller Design Through Loop Shaping”, Proc. 1998 ACC, pp. 1230-1234.
Ender et al., “Process Control Performance: Not as Good as You Think”, Control Engineering, 180-190, Sep. 1993.
Grassi et al., “Integrated System Identification and PID Controller Tunig by Frequency Loop-Shaping”, Proc. 38thConf. Decision and Contr., 1517-1522, Phoenix, Arizona, Dec. 1999.
Grassi et al., “PID Controller Tuning by Frequency Loop Shaping: Application to Diffusion Furance Temperature Control”, IEEE Trans. Contr. Syst. Techn., to appear, dated prior to Sep. 21, 2001.
Gaikwad e tal., “Auto-Tuning PID Using Loop-Shaping Ideas”, Proc. 1999 IEEE Intl. Conf. On Control Applications, 589-593, Kohala Coast, Hawaii, Aug. 1999.
Krause et al., “Robust Parameter Adjustment”, Proc. 1988 ACC, 331-336, Atlanta, Georgia, 1988.
Astrom et al., “Integrator Wind Up and How to Avoid It”, Proc. 1989 ACC, pp. 1693-1698.
Dash Sachi K.
Gaikwad Sujit V.
Stein Gunter
Tsakalis Kosta S.
Honeywell International , Inc.
Perez-Daple Aaron C.
Schwegman, Lundberg Wossner & Kluth
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