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What is 's' in a transfer function?
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[QUOTE="marcusl, post: 5479695, member: 31593"] It's hard to know from the limited information you provided. s is often the output variable from a Laplace transform. It is complex and related to angular frequency ω by [itex]s=\sigma+i\omega[/itex]. In control systems, the real part σ is intimately related to stability. There is lots of information about Laplace transforms on the web, and I imagine they are covered in every control theory book, as well. BTW, if you are interested in in-depth treatment of Laplace transforms applied to physical systems like heat conduction or the spring/damper that you mentioned, I can recommend a lovely little book called Operational Methods in Applied Mathematics by Carslaw and Jaeger. You can buy a used copy of the Dover edition for under $10, if it's not in your school library. [/QUOTE]
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What is 's' in a transfer function?
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