PI controller tuning using modified relay feedback method.

Tuning of PI speed controller

PID controllers are very common in industrial systems applications. The tuning of these controllers is governed by system nonlinearities and continuous parameter variations. In this paper, a complete and rigorous comparison is made between two tuning algorithms. The PI controller was used in a speed control loop in a Direct Torque Control (DTC) scheme applied on an induction motor. The first me...

Relay auto-tuning of PID controllers using iterative feedback tuning

In this paper, ideas from iterative feedback tuning (IFT) are incorporated into relay auto-tuning of the proportional-plus-integral-plusderivative (PID) controller. The PID controller is auto-tuned to give speci ed phase margin and bandwidth. Good tuning performance according to the speci ed bandwidth and phase margin can be obtained and the limitation of the standard relay auto-tuning techniqu...

Analytical PI Controller Tuning Using Closed-loop Setpoint Response

Recently Shamsuzzoha and Skogestad proposed a proportional-integral (PI) tuning rule for a wide range of unidentified processes. The rule relies on a closed-loop setpoint response (CSR) of a process and was developed from extensive numerical experiments. This work analytically derives a similar PI tuning rule using the CSR method. Simulations indicate that the two rules perform similarly if the...

Tuning methodology for a fuzzy PI controller

Relay Approach for tuning of PID controller

In recent years, relay feedback method has found a new lease of life in the automatic tuning of PID controllers and in the initialization of other sophisticated adaptive controllers. This tuner is based on the approximate estimation of the critical point on the process frequency response from relay oscillations. A continuous cycling of the controlled variable is generated from a relay feedback ...