Difference between revisions of "FAQ: What happens if a or L are negative in Zeigler-Nichols PID tuning?"

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''Posted by [[User:Murray|Murray]] 19:38, 12 November 2005 (PST)''<br />
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''Posted by Steve Waydo, 26 November 2002''<br />
 
In this case some of the gains will turn out to be negative, which may correspond to your controller having RHP poles or zeros, which is bad. A system with negative a or L is an example of when Zeigler-Nichols tuning may not work.
 
In this case some of the gains will turn out to be negative, which may correspond to your controller having RHP poles or zeros, which is bad. A system with negative a or L is an example of when Zeigler-Nichols tuning may not work.
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[[Category: Frequently Asked Questions]]
 
[[Category: Frequently Asked Questions]]
 
[[Category: Chapter 9 FAQ]][[Category: PID FAQ]]
 
[[Category: Chapter 9 FAQ]][[Category: PID FAQ]]

Latest revision as of 03:39, 13 November 2005

Posted by Steve Waydo, 26 November 2002
In this case some of the gains will turn out to be negative, which may correspond to your controller having RHP poles or zeros, which is bad. A system with negative a or L is an example of when Zeigler-Nichols tuning may not work.