Analytical design of fractional-order proportional-integral controllers for time-delay processes

作者：Truong Nguyen Luan Vu; Lee Moonyong^*

来源：ISA Transactions, 2013, 52(5): 583-591.

DOI：10.1016/j.isatra.2013.06.003

• Fractional-order proportional-integral (FOPI) controller
• Bodes ideal transfer function
• Fractional calculus
• Resonant peak (Mp) criterion

A new design method of fractional-order proportional-integral controllers is proposed based on fractional calculus and Bode%26apos;s ideal transfer function for a first-order-plus-dead-time process model. It can be extended to be applied to various dynamic models. Tuning rules were analytically derived to cope with both set-point tracking and disturbance rejection problems. Simulations of a broad range of processes are reported, with each simulated controller being tuned to have a similar degree of robustness in terms of resonant peak to other reported controllers. The proposed controller consistently showed improved performance over other similar controllers and established integer PI controllers.

• 出版日期2013-9