A 2-Dof LQR based PID controller for integrating processes considering robustness/performance tradeoff
| Autor: | Saurabh Srivastava, V.S. Pandit |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0209 industrial biotechnology
Engineering Process modeling business.industry Applied Mathematics Time constant PID controller Control engineering 02 engineering and technology Linear-quadratic regulator Computer Science Applications 020901 industrial engineering & automation 020401 chemical engineering Control and Systems Engineering Control theory Robustness (computer science) Control system Full state feedback 0204 chemical engineering Electrical and Electronic Engineering business Instrumentation Servo |
| Zdroj: | ISA Transactions. 71:426-439 |
| ISSN: | 0019-0578 |
| DOI: | 10.1016/j.isatra.2017.09.010 |
| Popis: | This paper focuses on the analytical design of a Proportional Integral and Derivative (PID) controller together with a unique set point filter that makes the overall Two-Degree of-Freedom (2-Dof) control system for integrating processes with time delay. The PID controller tuning is based on the Linear Quadratic Regulator (LQR) using dominant pole placement approach to obtain good regulatory response. The set point filter is designed with the calculated PID parameters and using a single filter time constant (λ) to precisely control the servo response. The effectiveness of the proposed methodology is demonstrated through a series of illustrative examples using real industrial integrated process models. The whole range of PID parameters is obtained for each case in a tradeoff between the robustness of the closed loop system measured in terms of Maximum Sensitivity (Ms) and the load disturbance measured in terms of Integral of Absolute Errors (IAE). Results show improved closed loop response in terms of regulatory and servo responses with less control efforts when compared with the latest PID tuning methods of integrating systems. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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