On the Selection of Tuning Methodology of FOPID Controllers for the Control of Higher Order Processes
On the Selection of Tuning Methodology of FOPID Controllers for the Control of Higher Order Processes
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DOI：
10.1016/j.isatra.2011.02.003
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发表时间：
2011-07
期刊：
影响因子：
7.3
通讯作者：
Saptarshi Das;Saumajit Saha;S. Das;Amitava Gupta
中科院分区：
文献类型：
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作者：
Saptarshi Das;Saumajit Saha;S. Das;Amitava Gupta
本文比较研究了分数阶PID控制器在处理高阶过程时的时域和频域整定策略。介绍了一种新的分数阶模板用于稳定最小/非最小相位高阶过程的约化参数建模，并指出了该模板在FOPID控制器频域整定中的优势。通过对各种积分性能指标进行优化，对FOPID控制器进行了时域最优调谐，以处理这些高阶过程。针对上述整定方法，重点讨论了在线自整定的灵活性、减小控制信号和执行器尺寸、测量噪声过滤能力、负载干扰抑制能力、对参数不确定性的鲁棒性等实际控制系统实现问题。
In this paper, a comparative study is done on the time and frequency domain tuning strategies for fractional order (FO) PID controllers to handle higher order processes. A new fractional order template for reduced parameter modelling of stable minimum/non-minimum phase higher order processes is introduced and its advantage in frequency domain tuning of FOPID controllers is also presented. The time domain optimal tuning of FOPID controllers have also been carried out to handle these higher order processes by performing optimization with various integral performance indices. The paper highlights on the practical control system implementation issues like flexibility of online autotuning, reduced control signal and actuator size, capability of measurement noise filtration, load disturbance suppression, robustness against parameter uncertainties etc. in light of the above tuning methodologies.