Modifications of Model Free Control to FOTD Plants

Huba, Mikuláš; Huba, T.

doi:10.1007/978-3-319-74718-7_21

Cited by 5 publications

(3 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to obtain a nearly continuous time behavior, one has to work with k ≥ 10 . 54 In any case, a fully discrete time solution is always preferable.…”

Section: Constrained First-order Plant Controlmentioning

confidence: 99%

Limits of a simplified controller design based on integral plus dead time models

Huba

Bélai

2018

Proceedings of the Institution of Mechanical Engineers, Part I:

Self Cite

View full text Add to dashboard Cite

This article presents design and evaluation of filtered proportional-integral controllers and filtered Smith predictorinspired constrained dead time compensators. Both are based on the integral plus dead time and on the first-order time delayed plant models. They are compared as for tuning simplicity, robustness and noise attenuation. Such a comparison, which presents a robustness test regarding the importance of the internal plant feedback approximation, may be carried out by performance measures built on deviations of the input and output transient responses from their ideal shapes. When combined with integral of absolute error measures of both solution types with the disturbance responses set as nearly equivalent, we can see that the filtered Smith predictor setpoint responses may be significantly faster than the filtered proportional-integral controller responses, more robust and, using higher-order filters, also sufficiently smooth. Furthermore, tuning of the possibly higher-order filters for filtered Smith predictor is simpler. Its overall design is more transparent and straightforward with respect to the control constraints, where the filtered Smith predictor requires some additional anti-windup measures.

show abstract

“…In order to obtain a nearly continuous time behavior, one has to work with k ≥ 10 . 54 In any case, a fully discrete time solution is always preferable.…”

Section: Constrained First-order Plant Controlmentioning

confidence: 99%

Limits of a simplified controller design based on integral plus dead time models

Huba

Bélai

2018

Proceedings of the Institution of Mechanical Engineers, Part I:

Self Cite

View full text Add to dashboard Cite

show abstract

“…1 Increasing evidence has demonstrated that FA is also generated endogenously in living organisms through various physiological processes. 2,3 In particular, FA is produced in the demethylation reactions of N-methylated proteins and nucleic acids. 4,5 Oxidative demethylation of dimethylglycine, deamination of methylamine, and methanol oxidation also generate FA.…”

Section: Introductionmentioning

confidence: 99%

Modular development of organelle-targeting fluorescent probes for imaging formaldehyde in live cells

Zhang,

Du,

Liao

et al. 2024

Anal. Methods

View full text Add to dashboard Cite

show abstract

“…From the closed-loop transients, we expected to reach the highest possible speed under the given control constraints, with the minimal deviations from ideal shapes of piecewise monotonic responses [13,20]. The paper, which is an amalgamation of several publications on the subject (see, e.g., [2,[30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48]) provides a refinement of the original step-responsebased method of Ziegler and Nichols in terms of the nearly time-optimal responses to step setpoint and input disturbances changes in systems with limited control action also under the influence of measurement noise. It is written pragmatically with the aim of making the subject accessible to the widest possible audience.…”

Section: Introductionmentioning

confidence: 99%

Making the PI and PID Controller Tuning Inspired by Ziegler and Nichols Precise and Reliable

Huba

Chamraz

Bisták

et al. 2021

Sensors

View full text Add to dashboard Cite

This paper deals with the design of a DC motor speed control implemented by an embedded controller. The design is simple and brings some important changes to the traditional Ziegler–Nichols tuning. The design also includes a novel anti-windup implementation of the controller and an integrated noise-reduction filter design. The proposed tuning method considers all important aspects of the control, such as pre-processing of the measured signals and filtering (to attenuate the measurement noise), time delays of the process, modeling and identification of the process, and constraints on the control signal. Three important aspects of designing PI and PID controllers for processes with noisy output on Arduino-type embedded computers are considered. First, it deals with the integrated design of the input filter and the controller parameters, since both are interdependent. Secondly, the method of setting the controllers from step responses by Ziegler and Nichols is modified for the case of digital signal processing (without drawing the tangent), while it recommends the suitability of its modification in terms of the use of both integral and static models. Third, the most suitable anti-windup solution for the given controller structure is proposed. In summary, the paper shows that an appropriate design of the embedded controller can achieve excellent closed-loop performance even in a noisy process environment with limited control signals.

show abstract

Modifications of Model Free Control to FOTD Plants

Cited by 5 publications

References 12 publications

Limits of a simplified controller design based on integral plus dead time models

Limits of a simplified controller design based on integral plus dead time models

Modular development of organelle-targeting fluorescent probes for imaging formaldehyde in live cells

Making the PI and PID Controller Tuning Inspired by Ziegler and Nichols Precise and Reliable

Contact Info

Product

Resources

About