Control of the plant with the response delay asymmetry

Baškys, Algirdas; Zlosnikas, V.

doi:10.1109/epepemc.2010.5606603

Cited by 1 publication

(3 citation statements)

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“…In the literature [ 12 ] the asymmetric PI (aPI) controller for the controlling of plants with the asymmetric response delay has been proposed, so it is interesting to compare it with this one proposed in this paper based on the PI controller with the switched-delay Smith predictor.…”

Section: Switched-delay Smith Predictormentioning

confidence: 99%

“…The control algorithm of an aPI controller is as in the following [ 12 ]:

where U ( t ) is the controller-output signal, K pp , K ip and K pn , K in are the proportional and integral constants used at the positive and at negative control errors e(t) , respectively, and t 0 is the moment the algorithm starts working.…”

Section: Switched-delay Smith Predictormentioning

confidence: 99%

“…There are practically no publications devoted to plants with asymmetric dynamics caused by the asymmetry of the response delay. This problem is considered only in article [ 12 ], in which it the use the PI controller with switched parameters for the control of such plants is proposed.…”

Section: Introductionmentioning

confidence: 99%

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Switched-Delay Smith Predictor for the Control of Plants with Response-Delay Asymmetry

Baškys

2022

Sensors

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The modification of a Smith predictor for the control of plants with response-delay asymmetry has been proposed. It was developed for application in frequency converters for the control of the speed of the AC induction motor drives of pumps used in water- and liquefied-petroleum-gas-supply systems. Such plants are characterized by long response delays, and often these delays are asymmetric, i.e., the response delay to the rising and falling plant-control signal is different. A distinctive feature of the proposed modification is that the value of the response delay in the model of the plant used for the realization of the Smith predictor is switched. The operation of the proposed switched-delay Smith predictor, which was used with the proportional-integral controller, was analyzed using a simulation and experimentally in a real water-supply system. The obtained results prove an advantage of the suggested solution.

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Section: Switched-delay Smith Predictormentioning

confidence: 99%

“…The control algorithm of an aPI controller is as in the following [ 12 ]:

Section: Switched-delay Smith Predictormentioning

confidence: 99%