Auto-tuning of TITO decoupling controllers from step tests |
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| Authors: | Wang Huang Guo |
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| Affiliation: | Department of Electrical Engineering, National University of Singapore, Singapore 119260 |
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| Abstract: | This paper considers auto-tuning of simple lead-lag decoupler plus decentralized PI/PID controllers for effective control of two-input and two-output (TITO) processes. A new robust identification method from step tests is presented first for SISO processes and then sequentially applied to TITO processes. The resulting 1st-order plus dead-time model is used for decoupler design and the 2nd-order one is used for decentralized PID sequential tuning. The simulation is given for illustration of the proposed tuning. |
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| Keywords: | Multivariable systems TITO Decentralized PID control Sequential tuning Step identification Decoupling Low-order modeling Deadtime model |
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