I want to know the tuning methods for pid controlling a system with time delay or dead-time. please suggest classical methods with refinement for consideration of time delay or new methods.

Also send me the information about the optimisation of pid parameters for the desired time response. The time response can be specified in terms of performance indices like IAE,Overshoot,Undershoot,Decay ratio etc.

What special considerations are there while tuning Digital PID controller.

How Astrom and Hagglund's autotuning method can be refined for tuning PID controller controlling a system having time delay or dead-time.

-- ravindra kharadkar (r_kharadkar@hotmail.com), November 02, 2001

Answers

For an excellent PID controller tuning program, visit this web site:

http://bestune.50megs.com

BESTune

-- Dan Liu (bestune@163.net), March 12, 2002.

for last question see the paper introduced by A.Leva PID AUTOTUNING ALGORITHM BASED ON RELAY FEEDBACK IEE, 1993 PP- 328-338

GOOD LUCK for the rest of questions my self I need the answers pls. send it me if you get it. Thanks

-- M. Elhees (elhees@yahoo.com), September 10, 2002.

Subject: pid tuning for roboshot injection molding

I want to know the tuning methods for pid controlling a system with parameter inroboshot . please suggest classical methods with refinement for consideration of setting pid or new methods. Also send me the information about the optimisation of pid parameters for the desired time response. The time response can be specified in terms of performance indices like IAE,Overshoot,Undershoot,Decay ratio etc.

What special considerations are there while tuning Digital PID controller.

-- agus sunanto (omlu_2001@yahoo.com)

-- agus sunanto (omlu_2001@yahoo.com), November 05, 2002.

For PID Tuning of dead time processes, check this reference: "How to Control Processes with Large Dead Times", Control Engineering March 1998. A copy of this article can be found here:

http://www.expertune.com/artdt.html

There are many other articles on PID tuning and process control at

http://www.expertune.com/articles.html

John Gerry ExperTune

-- John Gerry (jpgNews@expertune.com), January 11, 2003.

they are many sites contain useful epitome and document ,that may be useful for you in control engineering field. http://www.onesmartclick.com/engineering/chemical-process- control.html http://www.isc-ltd.com/resource_centre/tech_pid.html http://lorien.ncl.ac.uk/ming/pid/PID.pdf http://www.chemeng.ed.ac.uk/ecosse/control/sample/contents.html

mahdi mashaiekhy electronic student.

-- mahdi mashaiekhy (m_mashaiekhy@hotmail.com), August 04, 2003.

http://citeseer.nj.nec.com/dwyer00pi.html

-- Dr. Jim Becker (jbecker@ece.montana.edu), October 29, 2003.