Frequency Domain Design of Controllers for Lighting Process

Borlea, Alexandra-Bianca; Precup, Radu; Borlea, Ioan-Daniel; Dragus, Alexandru Nicolae

doi:10.1109/saci49304.2020.9118839

Cited by 2 publications

(4 citation statements)

References 25 publications

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“…The work of the closed-loop control system based on the proposed combined PID/PI/I controller ( Figure 2 ) was analysed with the plants, the dynamics of which are described by the first-order plus dead-time (FOPDT) transfer function. Such a model of the plant was chosen because it describes the dynamics of many real industrial processes [ 32 , 33 , 34 , 35 , 36 , 37 ]. The response delay (dead-time) values were chosen based on the literature [ 32 , 33 , 34 , 35 , 36 , 37 ], as well as from the practice of application of control systems.…”

Section: Combined Pid/pi/i Controllermentioning

confidence: 99%

“…Such a model of the plant was chosen because it describes the dynamics of many real industrial processes [ 32 , 33 , 34 , 35 , 36 , 37 ]. The response delay (dead-time) values were chosen based on the literature [ 32 , 33 , 34 , 35 , 36 , 37 ], as well as from the practice of application of control systems. For example, the water supply systems for which this controller was developed had such response delay values, and their dynamics corresponded to the FOPDT transfer function.…”

Section: Combined Pid/pi/i Controllermentioning

confidence: 99%

“…Such a model of the plant was chosen because it describes the dynamics of many real industrial processes [32][33][34][35][36][37]. The response delay (dead-time) values were chosen based on the literature [32][33][34][35][36][37], as well The controller modes are switched by switches SW1-SW3 (Figure 2). The position of the switches is determined by the value of the control error e(t).…”

Section: Combined Pid/pi/i Controllermentioning

confidence: 99%

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A Combined Controller for Closed-Loop Control Systems Affected by Electromagnetic Interference

Baskys

2024

Sensors

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In this paper, a new approach for the solution of the electromagnetic interference impact problem in closed-loop control systems with proportional-integral-derivative (PID) controllers is proposed. The approach is based on the application of a combined controller that consists of three controllers: PID, PI and I, when only one of them is operating at a time, and which one is operating determines the control error value. The proposed combined controller allows for achieving better resistance of the control system to the noise signals produced by electromagnetic interference compared to PID and PID with low-pass filters in derivative term controllers without deteriorating the dynamic performance of the control system. The operation of the controller has been analysed using simulation and experiments with plants, the dynamics of which are described by first-order plus dead-time transfer functions.

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Section: Combined Pid/pi/i Controllermentioning

confidence: 99%

Section: Combined Pid/pi/i Controllermentioning

confidence: 99%

Section: Combined Pid/pi/i Controllermentioning

confidence: 99%

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A Combined Controller for Closed-Loop Control Systems Affected by Electromagnetic Interference

Baskys

2024

Sensors

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“…To demonstrate this, the simulation of the set-point unit-pulse and unit-load-disturbance response of the control system based on the PI controller with the classical Smith predictor of the plants described by the first- and second-order transfer functions with the asymmetric response delay was performed. Such plants were chosen for analysis because the dynamics of many real controlled plants can be described by the first- or second-order transfer function plus the response delay [ 26 , 27 , 28 , 29 , 30 ]. The obtained results are presented in Figure 4 and Figure 5 .…”

Section: Problem Formulationmentioning

confidence: 99%

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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Frequency Domain Design of Controllers for Lighting Process

Cited by 2 publications

References 25 publications

A Combined Controller for Closed-Loop Control Systems Affected by Electromagnetic Interference

A Combined Controller for Closed-Loop Control Systems Affected by Electromagnetic Interference

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

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