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Wyświetlanie 1-15 z 23
Tytuł:
Design of H∞ proportional-integral thrust controller for ramjet engine
Autorzy:
Zorić, Nemanja Dušan
Radulović, Radoslav Danilo
Jazarević, Vladimir Miloš
Petrović, Trajko Borivoje
Powiązania:
https://bibliotekanauki.pl/articles/1839621.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
ramjetH∞ control
proportional-integral control
gain scheduling
Opis:
This paper presents the design of a thrust controller for a ramjet engine. The mathematical model for controller synthesis is based on a numerical solution of a set of nonlinear equations. Transfer functions of the engine are found for certain operation points defined by the altitude, Mach number and angle of attack. Local controllers are developed by using H∞ control methodology, finally reduced to proportional-integral (PI) controllers. For gain scheduling, linear interpolation of parameters of the local PI controllers is used. Next, simulations are performed in order to show performances of the presented control algorithm.
Źródło:
Journal of Theoretical and Applied Mechanics; 2020, 58, 4; 997-1007
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Filtered integral sliding mode control in a two-mass drive system
Autorzy:
Dróżdż, P.
Szabat, K.
Powiązania:
https://bibliotekanauki.pl/articles/1193310.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
filtered integral sliding mode control
integral sliding mode control
two-mass system
chattering alleviation
Opis:
The paper presents issues related to the application of filtered integral sliding mode control to a two-mass drive system. A classical control structure has been presented and its design procedure is shown in detail. The properties of the classical structure, in which the chattering phenomenon seems to be a big drawback, have been summarized. In order to eliminate this phenomenon, an output low-pass filter has been proposed and the performance of this system has been tested. In order to improve its characteristics, an adaptive low-pass filter has been proposed. The bandwidth of the filter was changed on-line by the fuzzy system according to the current state of the plant. During the steady-states, the bandwidth is low to eliminate chattering effect, and during transients higher in order to ensure the fast dynamics of the plant.
Źródło:
Power Electronics and Drives; 2017, 2, 37/1; 121-134
2451-0262
2543-4292
Pojawia się w:
Power Electronics and Drives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of state feedback and PID control of pressurizer water level in nuclear power plant
Autorzy:
Czapliński, M.
Sokólski, P.
Duzinkiewicz, K.
Piotrowski, R.
Rutkowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/229369.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
nuclear power plant
pressurizer
state feedback
water level control
integral control
reduced-order Luenberger state observer
PID control
Opis:
The pressurizer water level control system in nuclear power plant with pressurized water reactor (PWR) is responsible for coolant mass balance. The main control goal is to stabilize the water level at a reference value and to suppress the effect of time-varying disturbances (e.g. coolant leakage in primary circuit pipeline system). In the process of PWR power plant operation incorrect water level may disturb pressure control or may cause damage to electric heaters which could threaten plant security and stability. In modern reactors standard PID controllers are used to control water level in a pressurizer. This paper describes the performance of state feedback integral controller (SFIC) with reduced-order Luenberger state observer designed for water level control in a pressurizer and compares it to the standard PID controller. All steps from modeling of a pressurizer through control design to implementation and simulation testing in Matlab/Simulink environment are detailed in the paper.
Źródło:
Archives of Control Sciences; 2013, 23, 4; 455-471
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design of three control algorithms for an averaging tank with variable filling
Autorzy:
Kolankowski, Michał
Piotrowski, Robert
Powiązania:
https://bibliotekanauki.pl/articles/2105996.pdf
Data publikacji:
2022
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
control system
fuzzy control system
integral control system
LQR
mathematical model
PID control system
state feedback controller
tank with variable filling
Opis:
An averaging tank with variable filling is a nonlinear multidimensional system and can thus be considered a complex control system. General control objectives of such object include ensuring stability, zero steady-state error, and achieving simultaneously shortest possible settling time and minimal overshoot. The main purpose of this research work was the modeling and synthesis of three control systems for an averaging tank. In order to achieve the intended purpose, in the first step, a mathematical model of the control system was derived. The model was adapted to the form required to design two out of three planned control systems by linearization and reduction of its dimensions, resulting in two system variants. A multivariable proportional-integral-derivative (PID) control system for the averaging tank was developed using optimization for tuning PID controllers. State feedback and output feedback with an integral action control system for the considered control system was designed using a linear-quadratic regulator (LQR) and optimization of weights. A fuzzy control system was designed using the Mamdani inference system. The developed control systems were tested using theMATLAB environment. Finally, the simulation results for each control algorithm (and their variants) were compared and their performance was assessed, as well as the effects of optimization in the case of PID and integral control (IC) systems.
Źródło:
Acta Mechanica et Automatica; 2022, 16, 2; 136--150
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sliding mode speed control for multi-motors system
Autorzy:
Bouchiba, B.
Hazzab, A.
Glaoui, H.
Med-Karim, F.
Bousserhane, I. K.
Powiązania:
https://bibliotekanauki.pl/articles/384373.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
Multi-Motors systems
sliding mode control
proportional-integral (P1) control
Opis:
Continuous processes in the plastics, textile paper and other industries, require several drives working in synchronism. The aim of this paper is to control speed of the multi motors system, and to maintain a constant mechanical tension between the rollers of the system. Several controllers are considerer, including Proportional-Integral (PI) and sliding-mode control (SMC). Since the PI control method can be applied easily and is widely known, it has an important place in control applications. But this method is insensitive to parameter changes. The advantage of an SMC is its robustness and ability to handle the non-linear behaviour of the system, and is indicated in comparison with traditional proportional-integral (P1) control scheme. Theoretical analysis and simulation results are provided to evaluate the consistency and performances of this control technique (SMC).
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2010, 4, 3; 50-54
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Robust flat filtering control of a two degrees of freedom helicopter subject to tail rotor disturbances
Autorzy:
Sánchez-Meza, Victor-Gabriel
Lozano-Hernández, Yair
Gutiérrez-Frías, Octavio
Lozada-Castillo, Norma
Luviano-Juárez, Alberto
Powiązania:
https://bibliotekanauki.pl/articles/24200696.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
flat filtering control
generalized proportional integral control
nonlinear system
tail rotor disturbance
two degrees of freedom helicopter
sterowanie całkujące
układ nieliniowy
zakłócenia wirnika
Opis:
This article deals with modelling and a flatness-based robust trajectory tracking scheme for a two degrees of freedom helicopter, which is subject to four types of tail rotor disturbances to validate the control scheme robustness. A mathematical model of the system, its differential flatness and a differential parametrization are obtained. The flat filtering control is designed for the system control with a partially known model, assuming the non-modelled dynamics and the external disturbances (specially the tail rotor ones) to be rejected by means of an extended state model (ultra-local model). Numerical and experimental assessments are carried out on a characterized prototype whose yaw angle (ψ), given by the z axis, is in free form, while the pitch angle (θ), which results from rotation about the y axis, is mechanically restricted. The proposed controller performance is tested through a set of experiments in trajectory tracking tasks with different disturbances in the tail rotor, showing robust behaviour for the different disturbances. Besides, a comparison study against a widely used controller of LQR type is carried out, in which the proposed controller achieves better results, as illustrated by a performance index.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2023, 33, 4; 521--535
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fault tolerant control of wind turbine via identified fuzzy models prototypes
Autorzy:
Djoudi, Habib Chaouki Ben
Hafaifa, Ahmed
Djoudi, Dalila
Guemana, Mouloud
Powiązania:
https://bibliotekanauki.pl/articles/328473.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
fault detection
fault isolation
fault tolerant control
Benchmark model
proportional integral control
fuzzy control
turbina wiatrowa
detekcja uszkodzeń
lokalizacja uszkodzeń
sterowanie odporne na uszkodzenia
sterowanie rozmyte
Opis:
The main purpose of this study is the comparison of two control strategies of wind turbine 4.8 MW, using fuzzy control and proportional integral control, taking into account eight kinds of faults that can occur in a wind turbine model. A technique based on fault diagnosis has been used to detect and isolate faults actuators and sensors in this system, it's about an observer applied to the benchmark model. The obtained results are presented to validate the effectiveness of this diagnostic method and present the results of the proposed control strategies.
Źródło:
Diagnostyka; 2020, 21, 3; 3-13
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A fault tolerant direct control allocation scheme with integral sliding modes
Autorzy:
Hamayun, M. T.
Edwards, C.
Alwi, H.
Bajodah, A.
Powiązania:
https://bibliotekanauki.pl/articles/330832.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
fault tolerant control
integral sliding mode control
linear matrix inequalities
sterowanie tolerujące uszkodzenia
sterowanie ślizgowe
liniowe nierówności macierzowe
Opis:
In this paper, integral sliding mode control ideas are combined with direct control allocation in order to create a fault tolerant control scheme. Traditional integral sliding mode control can directly handle actuator faults; however, it cannot do so with actuator failures. Therefore, a mechanism needs to be adopted to distribute the control effort amongst the remaining functioning actuators in cases of faults or failures, so that an acceptable level of closed-loop performance can be retained. This paper considers the possibility of introducing fault tolerance even if fault or failure information is not provided to the control strategy. To demonstrate the efficacy of the proposed scheme, a high fidelity nonlinear model of a large civil aircraft is considered in the simulations in the presence of wind, gusts and sensor noise.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2015, 25, 1; 93-102
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the robustness of the integrable trajectories of the control systems with limited control resources
Autorzy:
Huseyin, Nesir
Huseyin, Anar
Guseinov, Khalik G.
Powiązania:
https://bibliotekanauki.pl/articles/27321481.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
nonlinear control system
integral equation
integral constraint
integrable trajectory
robustness
Opis:
The control system described by Urysohn type integral equation is considered where the system is nonlinear with respect to the phase vector and is affine with respect to the control vector. The control functions are chosen from the closed ball of the space Lq(Ω; ℝm), q > 1, with radius r and centered at the origin. The trajectory of the system is defined as p-integrable multivariable function from the space Lp(Ω; ℝn), (1/q) + (1/p) = 1, satisfying the system’s equation almost everywhere. It is shown that the system’s trajectories are robust with respect to the fast consumption of the remaining control resource. Applying this result it is proved that every trajectory can be approximated by the trajectory obtained by full consumption of the total control resource.
Źródło:
Archives of Control Sciences; 2023, 33, 3; 527--537
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Observer-based leader-following formation control of uncertain multiple agents by integral sliding mode
Autorzy:
Qian, D. W.
Tong, S. W.
Li, C. D.
Powiązania:
https://bibliotekanauki.pl/articles/201511.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
multi-agent system
formation control
integral sliding mode control
uncertainty
nonlinear disturbance observer
stability
system wieloagentowy
kontrola formacji
integralne sterowanie ślizgowe
niepewność
nieliniowy obserwator zakłóceń
stabilność
Opis:
This paper investigates the formation control problem of multiple agents. The formation control is founded on leader-following approaches. The method of integral sliding mode control is adopted to achieve formation maneuvers of the agents based on the concept of graph theory. Since the agents are subject to uncertainties, the uncertainties also challenge the formation-control design. Under a mild assumption that the uncertainties have an unknown bound, the technique of nonlinear disturbance observer is utilized to tackle the issue. According to a given communication topology, formation stability conditions are investigated by the observer-based integral sliding mode formation control. From the perspective of Lyapunov, not only is the formation stability guaranteed, but the desired formation of the agents is also realized. Finally, some simulation results are presented to show the feasibility and validity of the proposed control scheme through a multi-agent platform.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2017, 65, 1; 35-44
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On generalization of integral control to a class of nonlinear uncertain systems
Autorzy:
Zwierzewicz, Z.
Powiązania:
https://bibliotekanauki.pl/articles/229834.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
nonlinear control
uncertain systems
adaptive control
integral action
approximator
functional uncertainty
Opis:
The paper concerns a new view on the problem of integral control in the context of nonlinear uncertain systems. It is demonstrated that a standard integral action applied to the linear control system with so-called load disturbances, can be generalized to comprise a class of linearly parameterized nonlinear SISO systems with functional uncertainty. In this case the integral action is turned out to be in fact an adaptation law of unknown parameters. It has been found that the obtained proportional-integral controller's variable gains are the basis functions of the system unknown nonlinearity approximator.
Źródło:
Archives of Control Sciences; 2010, 20, 2; 187-198
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the lower semicontinuity of functionals involving Lebesgue or improper Riemann integrals in infinite horizon optimal control problems
Autorzy:
Pickenhain, S.
Lykina, V.
Wagner, M.
Powiązania:
https://bibliotekanauki.pl/articles/969619.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
optimal control
infinite horizon
weighted Sobolev spaces
lower semicontinuity
Lebesgue integral
improper Riemann integral
Opis:
This paper deals with infinite horizon optimal control problems, which are formulated in weighted Sobolev spaces ... [wzór] and weighted Lp-spaces ... [wzór]. We ask for the consequences of the interpretation of the integral within the objective as a Lebesgue or an improper Riemann integral. In order to justify the use of both types of integrals, various applications of infinite horizon problems are presented. We provide examples showing that lower semicontinuity may fail for objectives involving Lebesgue as well as improper Riemann integrals. Further we prove a lower semicontinuity theorem for an objective with Lebesgue integral under more restrictive growth conditions on the integrand.
Źródło:
Control and Cybernetics; 2008, 37, 2; 451-468
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design of Network Traffic Congestion Controller with PI AQM Based on ITAE Index
Autorzy:
Fajri, Misbahul
Ramli, Kalamullah
Powiązania:
https://bibliotekanauki.pl/articles/1844457.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
network congestion control
active queue management (AQM)
proportional integral controller
Nelder-Mead simplex method
integral of time-weighted absolute error (ITAE)
Opis:
Establishing the proper values of controller parameters is the most important thing to design in active queue management (AQM) for achieving excellent performance in handling network congestion. For example, the first well known AQM, the random early detection (RED) method, has a lack of proper parameter values to perform under most the network conditions. This paper applies a Nelder-Mead simplex method based on the integral of time-weighted absolute error (ITAE) for a proportional integral (PI) controller using active queue management (AQM). A TCP flow and PI AQM system were analyzed with a control theory approach. A numerical optimization algorithm based on the ITAE index was run with Matlab/Simulink tools to find the controller parameters with PI tuned by Hollot (PI) as initial parameter input. Compared with PI and PI tuned by Ustebay (PIU) via experimental simulation in Network Simulator Version 2 (NS2) in five scenario network conditions, our proposed method was more robust. It provided stable performance to handle congestion in a dynamic network.
Źródło:
International Journal of Electronics and Telecommunications; 2020, 66, 4; 715-721
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental Self-Tuning Proportional Integral Derivative pH Control: Application to a Bioprocess
Autorzy:
Altuntaş, S.
Hapoğlu, H.
Ertunç, S.
Alpbaz, M.
Powiązania:
https://bibliotekanauki.pl/articles/1031479.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
Experimental self-tuning proportional-integral-derivative application
pH control
kefir yeast
cheese whey
Opis:
pH control has received considerable attention in preparation of cheese whey drink, by fermentation with kefir yeast, because of its critical role in quality assurance. To improve the rheological and sensory properties of this drink, milk and grape juice are added to the bioprocess medium. Cheese whey drink was produced from the pasteurized mixture, which contains cheese whey, glucose, grape juice and milk. The fermentation of this mixture with kefir yeast in a batch bioreactor was investigated. The pH was monitored during the production of cheese whey drink. Experiments show that kefir yeast is very resistant to contamination. A self-tuning proportional-integral-derivative control was applied to the bioprocess. The software of controller was developed by using the autoregressive moving average exogenous model. The model parameters were evaluated from input-output data by using a pseudo random binary sequence. The experimental results illustrate that the controller can maintain the pH at the desired value. It is noted that the self-tuning proportional-integral-derivative pH control results with the best controller tuning parameters and provides very good results, compared to initially adjusted case, without control. The best tuning parameters were found as t₁=0.1, t₂=0, t₃=0, by comparing experimental application results.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 1006-1009
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Gram-Schmidt Method in the Identification of a Generalized Control System
Autorzy:
Wysocki, H.
Powiązania:
https://bibliotekanauki.pl/articles/911169.pdf
Data publikacji:
2000
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
rachunek operatorowy
pochodna
system sterowania
operational calculus
derivative
integral
limit condition
control system
identification
orthonormalization method
Opis:
This article discusses the identification of a generalized linear control system described in the Bittner operational calculus by an abstract linear differential equation with constant coefficients. The identification problem leads to that of the best approximation in the vector space l_m^2 and is solved by using the Gram-Schmidt orthonormalization method. The classical Strejc method and the Shinbrot modulating function method are generalized here.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2000, 10, 2; 245-271
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 23

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