Fictitious reference iterative tuning (FRIT) is a method for designing the feedback controller
of an unknown plant model. FRIT searches control parameters so that the plant output …

In this paper, we propose a new method for updating controllers by using closed loop data
without a mathematical model of plant. The proposed method here requires only one-shot …

PID controllers have been widely employed in real processes. Since PID parameters
strongly affect the control performance, lots of schemes for tuning PID parameters have been …

For the next generation of manufacturing, represented by Industrie 4.0, a multi-input
controller is designed directly from controlled data, without using the mathematical plant …

In this paper, a loop‐sha** design method of PID controllers is proposed for stable plants
under the condition that the plant is linear time invariant and a finite‐time plant response is …

Prefilters for Virtual Reference Feedback Tuning (VRFT) in the time domain are realized by
the leastsquares method with step reference response data acquired from the closed-loop …

A direct design approaches based on input-output measurements with no need for help from
a plant model have attracted attention from several researchers. We have recently proposed …

The direct control parameter tuning methods derive the control parameters from the one-shot
experimental input and output data with no need of help from the plant model. Most prior …

Most methods to compute PID parameters are based on system models. The model should
describe the system properties accurately. In order to construct a highly accurate model, it is …

The disturbance attenuation FRIT method for regulator problems tunes the control
parameters so that the disturbance response follows the disturbance reference model …