A tutorial review on process identification from step or relay feedback test
Step and relay feedback tests have been widely used for model identification in the process
industry. The corresponding identification methods developed in the past three decades are …
industry. The corresponding identification methods developed in the past three decades are …
Parameter identification of a delayed infinite-dimensional heat-exchanger process based on relay feedback and root loci analysis
The focus of this contribution is twofold. The first part aims at the rigorous and complete
analysis of pole loci of a simple delayed model, the characteristic function of which is …
analysis of pole loci of a simple delayed model, the characteristic function of which is …
Identification of process transfer function parameters in event-based PI control loops
This paper presents a method to estimate the parameters of first and second order systems
with time delays with different accuracy levels for autotuning of event-based PI control loops …
with time delays with different accuracy levels for autotuning of event-based PI control loops …
[HTML][HTML] An event-based adaptation of the relay feedback experiment for frequency response identification of stable processes
An event-based modification of the classical relay feedback experiment without the inclusion
of additional elements (integrator, time delay,…) for identification of the spectrum of stable …
of additional elements (integrator, time delay,…) for identification of the spectrum of stable …
Alternative identification algorithms for obtaining a first-order stable/unstable process model from a single relay feedback test
A first-order-plus-dead-time (FOPDT) model is most commonly used for control system
design and on-line tuning. By using a single biased/unbiased relay feedback test, four …
design and on-line tuning. By using a single biased/unbiased relay feedback test, four …
Fitting of Generic Process Models by an Asymmetric Short Relay Feedback Experiment—The n-Shifting Method
This paper presents the generalization of the shifting method for relay feedback identification
of dynamic systems of any order. The original shifting method enables the fitting of a …
of dynamic systems of any order. The original shifting method enables the fitting of a …
PID controller with an autotuning function
M Moučka, M Hofreiter - IEEE Access, 2024 - ieeexplore.ieee.org
The optimal setting of parameters of PID controllers is a significant requirement of industrial
practice. It seems intuitive, but it can be complicated, especially when there are many (often …
practice. It seems intuitive, but it can be complicated, especially when there are many (often …
Enhanced event-based identification procedure for process control
An enhanced event-based identification procedure for process control has been developed
based on the information obtained from the oscillations that an event-based sampler …
based on the information obtained from the oscillations that an event-based sampler …
Industrial test setup for autotuning of PID controllers in large-scale processes: Applied to Tennessee Eastman process
Although many PID tuning approaches are available, it is not easy to find a method that does
not require any engineer/operator interference. In this work, we present a fully automated …
not require any engineer/operator interference. In this work, we present a fully automated …
Asymmetric System Model Parameters Identification Framework via Relay Feedback
This paper proposes an innovative framework of a parameter estimation procedure based
on the well-established relay-feedback experiment paradigm. The novelty consists in …
on the well-established relay-feedback experiment paradigm. The novelty consists in …