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kumaresnk Member Join Date: Sep 2009 Location: orissa Posts: 6	thermocouple 10/17/2009 3:12 AM
	Here we are using hydraulic cylinders for controlling furnace tilting.we are using pid loop for automatic tilting, They say that before starting loop should be fine tuned with all Kp,Ki,Kd values through trial and error method what are those and for what they shoud be tuned? __________________ thirsty
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lynlynch Guru Join Date: Oct 2008 Location: Arizona USA 33.422N. -111.821W. Posts: 2825 Good Answers: 72	#1 Re: thermocouple 10/17/2009 8:47 AM
	WikiAnswers - How do you calibrate a thermocouple __________________ If the speed of light hasn't changed, why is it getting dark later?

MrWannLee Participant Join Date: Oct 2009 Posts: 1	#2 Re: thermocouple 10/17/2009 9:29 PM
	Actlly, Kp stands for proportional gain, Ki, integral gain n Kd stands for Derivative Gain.. It's PID controller, and they should be tuned for getting stabil n unfluatate loop.. just tuning ur voltage n current

josej Power-User Join Date: Mar 2008 Posts: 154 Good Answers: 2	#3 Re: thermocouple 10/18/2009 1:08 AM
	Put KP Value 1 Ti value =0.5 TD VALUe=0.0 In HMI Set point will be straight line , Observe the process value ideally it should be pure sinsoidal wave oscillating with a negliable error around Set point If error is there manipulate Ti by increasing and decraseing the value of Ti untill a pure sine wave is obtained around the set point Regards Jose

PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing. Kettle's on. Posts: 8647 Good Answers: 163	#4 Re: thermocouple 10/20/2009 3:33 AM
	Google the Ziegler-Nicholls tuning method. There may even be an article on this topic in Wikipedia, perhaps? __________________ The elephant is a funny bird. It flits from bough to bough. It lays its eggs in a rhubarb tree and whistles, like a cow - Spike Milligan.

maveric_manic Guru Join Date: Apr 2009 Location: Santa Clarita, California USA Posts: 519	#5 Re: thermocouple 10/20/2009 11:38 PM
	Is this about thermocouples? __________________ Regards, maveric_manic - "Knowledge is Power and Wisdom is knowing how to use it"

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josej (1), lynlynch (1), maveric_manic (1), MrWannLee (1), PWSlack (1)

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