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Process Identification and PID Control by In-Beum Lee, Jietae Lee, Su Whan Sung

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Part Three

Process Identification

Process identification methods, whose role is to provide the process model in designing the process controller, are introduced in Part Three. In Chapter 8, the mathematical tools of the Fourier series and describing function analysis are introduced, followed by the process identification methods of the Fourier analysis and the modified Fourier transform to estimate the process models in the form of the frequency response. Chapters 9 and 10 introduce the process identification methods used to obtain the process models in the form of a continuous-time differential equation and a discrete-time difference equation respectively. Chapter 11 discusses how to convert the discrete-time model to a continuous-time model.

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