HW 7 Problem 2 - Revision history

Hines at 22:40, 25 November 2007

2007-11-25T22:40:22Z

← Older revision		Revision as of 22:40, 25 November 2007
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	What you're supposed to take away from this problem is a better intuition for how to come up with your ''first cut'' controller. By looking at the process transfer function, you can't easily deduce the correct values of the controller gains, but what you should do is look at either the process step response or the process transfer function and reason about		What you're supposed to take away from this problem is a better intuition for how to come up with your ''first cut'' controller, and then a better understanding of how to tune that controller to meet specifications. By looking at the process transfer function, you can't easily deduce the correct values of the controller gains, but what you should do is look at either the process step response or the process transfer function and reason about

	* how the process needs to be modified to meet the specs		* how the process needs to be modified to meet the specs

Hines at 22:39, 25 November 2007

2007-11-25T22:39:26Z

← Older revision		Revision as of 22:39, 25 November 2007
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	What you're supposed to take away from this problem is a better intuition for how to come up with your 'first cut' controller. By looking at the process transfer function, you can't easily deduce the correct values of the controller gains, but what you should do is look at either the process step response or the process transfer function and reason about		What you're supposed to take away from this problem is a better intuition for how to come up with your ''first cut'' controller. By looking at the process transfer function, you can't easily deduce the correct values of the controller gains, but what you should do is look at either the process step response or the process transfer function and reason about

	* how the process needs to be modified to meet the specs		* how the process needs to be modified to meet the specs

Hines at 22:39, 25 November 2007

2007-11-25T22:39:15Z

← Older revision		Revision as of 22:39, 25 November 2007
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	What you're supposed to take away from this problem is a better intuition for how to ~~make~~ your first cut controller. By looking at the process transfer function, you can't easily deduce the correct values of the controller gains, but what you should do is look at either the process step response or the process transfer function and reason about		What you're supposed to take away from this problem is a better intuition for how to come up with your 'first cut' controller. By looking at the process transfer function, you can't easily deduce the correct values of the controller gains, but what you should do is look at either the process step response or the process transfer function and reason about

	* how the process needs to be modified to meet the specs		* how the process needs to be modified to meet the specs

Hines at 22:38, 25 November 2007

2007-11-25T22:38:16Z

← Older revision		Revision as of 22:38, 25 November 2007
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	Do NOT simply guess and check gain values. If it is clear that you guessed numbers and they happened to work, you will not get full credit. Explain your thought process in arriving at the controller you choose.		Do NOT simply guess and check gain values. If it is clear that you guessed numbers and they happened to work, you will not get full credit. Explain your thought process in arriving at the controller you choose.

	--[[User:Hines\|Hines]] 14:38, 25 November 2007 (PST)		--[[User:Hines\|George Hines]] 14:38, 25 November 2007 (PST)

	[[Category: CDS 101/110 FAQ - Homework 7]]		[[Category: CDS 101/110 FAQ - Homework 7]]
	[[Category: CDS 101/110 FAQ - Homework 7, Fall 2007]]		[[Category: CDS 101/110 FAQ - Homework 7, Fall 2007]]

Hines at 22:38, 25 November 2007

2007-11-25T22:38:05Z

New page

What you're supposed to take away from this problem is a better intuition for how to make your first cut controller. By looking at the process transfer function, you can't easily deduce the correct values of the controller gains, but what you should do is look at either the process step response or the process transfer function and reason about

* how the process needs to be modified to meet the specs
* what type of controller (P, PI, PD, PID, etc.) is necessary
* what that controller transfer function should look like

As a side note, if you're convinced that you want a full PID controller, Ziegler-Nichols parameters are a good starting point, but remember that complicated is not always good.

Do NOT simply guess and check gain values. If it is clear that you guessed numbers and they happened to work, you will not get full credit. Explain your thought process in arriving at the controller you choose.

--[[User:Hines|Hines]] 14:38, 25 November 2007 (PST)

[[Category: CDS 101/110 FAQ - Homework 7]]
[[Category: CDS 101/110 FAQ - Homework 7, Fall 2007]]