Tuning optimal PID controllers for open loop unstable first order plus time delay systems by minimizing ITAE criterion

Rao, C. Lakshmana; Santosh, Simi; Ram, Dhanya

doi:10.1016/j.ifacol.2020.06.021

Cited by 30 publications

(21 citation statements)

References 20 publications

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“…Una manera de evaluar el desempeño del sistema en lazo cerrado con el control propuesto, es emplear alguno de los criterios de la integral del error, en este caso, la integral del error cuadrático (ISE) no suele ser representativa si los valores del error son menores a uno, ya que al ser elevados al cuadrado se hacen más pequeños. Otro criterio empleado comúnmente es la integral del absoluto del error por el tiempo, el cual penaliza errores ocurridos tiempo después de iniciada la simulación (Rao et al, 2020); pero al haber utilizado un control PI, el voltaje de salida del convertidor converge a la referencia, por lo que este criterio no se empleó en este trabajo.…”

Section: Resultsunclassified

Control difuso tipo dos en convertidores de potencia

Márquez-Vera

Paredes-Huerta²,

Ramos-Fernández³

et al. 2022

ICBI

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Este artículo muestra el control del voltaje de salida de un convertidor de potencia tipo boost, los convertidores son sistemas conmutados, por lo cual se eligió un control discontinuo de modos deslizantes, este tipo de control emplea un control equivalente que puede hacer uso del modelo matemático del sistema, y un control discontinuo basado en una función del error de medición. Ante la incertidumbre paramétrica en el circuito y situaciones prácticas pasadas por alto en el modelo del convertidor, como son las caídas de voltaje en el interruptor y el diodo, se emplearon modos deslizantes difusos adaptables, de este modo no es necesario contar con el modelo matemático del convertidor. Una alternativa de justificar la arbitrariedad en el diseño de los conjuntos difusos es emplear conjuntos difusos tipo dos, con los que se abarcarían diferentes formas de conjuntos en la partición difusa, por lo que este tipo de conjuntos es empleado en este esquema de control.

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Section: Resultsunclassified

Control difuso tipo dos en convertidores de potencia

Márquez-Vera

Paredes-Huerta²,

Ramos-Fernández³

et al. 2022

ICBI

View full text Add to dashboard Cite

show abstract

“…Here, I denotes the output current drawn from a PV cell or a wind system's output rectifier, and V is the corresponding output voltage. The integral of time multiplied absolute error (ITAE) criteria, which is provided by Equation (3) [52], was employed as an objective function for PI controller's optimization.…”

Section: Methodsmentioning

confidence: 99%

African Vulture Optimization Algorithm-Based PI Controllers for Performance Enhancement of Hybrid Renewable-Energy Systems

et al. 2022

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An effective maximum power point tracking (MPPT) technique plays a crucial role in improving the efficiency and performance of grid-connected renewable energy sources (RESs). This paper uses the African Vulture Optimization Algorithm (AVOA), a metaheuristic technique inspired by nature, to tune the proportional–integral (PI)-based MPPT controllers for hybrid RESs of solar photovoltaic (PV) and wind systems, as well as the PI controllers in a storage system that are used to smooth the output fluctuations of those RESs in a hybrid system. The performance of the AVOA is compared with that of the widely used the particle swarm optimization (PSO) technique, which is commonly acknowledged as the foundation of swarm intelligence. As a result, this technique is introduced in this study to draw a comparison. It is observed that the proposed algorithm outperformed the PSO algorithm in terms of the tracking speed, robustness, and best convergence to the minimum value. A MATLAB/Simulink model was built, and optimization and simulation for the proposed system were carried out to verify the introduced algorithms. In conclusion, the optimization and simulation results showed that the AVOA is a promising method for solving a variety of engineering problems.

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“…The lateral error e is the best index for the tractor path tracking performance. Therefore, ITAE is chosen as the objective function F, as shown in Equation ( 13) [29]. When F reaches the minimum value, the tractor can achieve the best tracking performance.…”

Section: Imp-st Parameter Tuning Using the Mpgamentioning

confidence: 99%

Path Tracking Control of an Autonomous Tractor Using Improved Stanley Controller Optimized with Multiple-Population Genetic Algorithm

et al. 2022

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To improve the path tracking accuracy of autonomous tractors in operation, an improved Stanley controller (IMP-ST) is proposed in this paper. The controller was applied to a two-wheel tractor dynamics model. The parameters of the IMP-ST were optimized by multiple-population genetic algorithm (MPGA) to obtain better tracking performance. The main purpose of this paper is to implement path tracking control on an autonomous tractor. Thus, it is significant to study this field because of smart agricultural development. According to the turning strategy of tractors in field operations, five working routes for tractors were designed, including straight, U, Ω, acute-angle and obtuse-angle routes. Simulation tests were conducted to verify the effectiveness of the proposed IMP-ST in tractor path tracking for all routes. The lateral root-mean-square (RMS) error of the IMP-ST was reduced by up to 36.84% and 48.61% compared to the extended Stanley controller and the original Stanley controller, respectively. The simulation results indicate that the IMP-ST performed well in guiding the tractor to follow all planned working routes. In particular, for the U and Ω routes, the two most common turning methods in tractor field operations, the path tracking performance of the IMP-ST was improved by 41.72% and 48.61% compared to the ST, respectively. Comparing and analyzing the e-Ψ and β-γ phase plane of the three controllers, the results indicate that the IMP-ST has the best control stability.

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Tuning optimal PID controllers for open loop unstable first order plus time delay systems by minimizing ITAE criterion

Cited by 30 publications

References 20 publications

Control difuso tipo dos en convertidores de potencia

Control difuso tipo dos en convertidores de potencia

African Vulture Optimization Algorithm-Based PI Controllers for Performance Enhancement of Hybrid Renewable-Energy Systems

Path Tracking Control of an Autonomous Tractor Using Improved Stanley Controller Optimized with Multiple-Population Genetic Algorithm

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