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https://scholarbank.nus.edu.sg/handle/10635/54175
Title: | A frequency response approach to autotuning of multivariable controllers | Authors: | Wang, Q.-G. Hang, C.-C. Zou, B. |
Keywords: | Autotuning FFT Frequency response Multivariable system PID control Relay feedback |
Issue Date: | 1997 | Citation: | Wang, Q.-G.,Hang, C.-C.,Zou, B. (1997). A frequency response approach to autotuning of multivariable controllers. Chemical Engineering Research and Design 75 (8) : 797-806. ScholarBank@NUS Repository. | Abstract: | The relay auto-tuning technique for PID controllers is here extended to tune multivariable controllers. In the case of significant interaction, a fully cross-coupled multivariable controller rather than a decentralized controller should be employed. In this paper, an autotuning method for multivariable controllers from sequential relay feedback is proposed. The frequency response a m × m multivariable process is identified from limit cycles using a FFT-based method, and a multivariable controller is computed with linear least squares frequency response fitting. Various typical examples are included for illustration of the effectiveness of the method. | Source Title: | Chemical Engineering Research and Design | URI: | http://scholarbank.nus.edu.sg/handle/10635/54175 | ISSN: | 02638762 |
Appears in Collections: | Staff Publications |
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