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1

Fernández-Caballero, Antonio, Lidia María Belmonte, Rafael Morales, and José Andrés Somolinos. "Generalized Proportional Integral Control for an Unmanned Quadrotor System." International Journal of Advanced Robotic Systems 12, no. 7 (2015): 85. http://dx.doi.org/10.5772/60833.

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2

SAEED, QAMAR, VALI UDDIN, and REZA KATEBI. "MIMO PREDICTIVE PID CONTROL: A PRACTICAL APPROACH FOR QUADRUPLE TANK." Journal of Circuits, Systems and Computers 22, no. 03 (2013): 1350009. http://dx.doi.org/10.1142/s0218126613500096.

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In this paper, predictive control has been implemented by several methods in a most simplified manner for quadruple tank system, i.e., a multi-input multi-output control problem. Quadruple tank system is a nonlinear system which can be adjusted to obtain two different class of system i.e., minimum and nonminimum phase, therefore tuning for each phase of system has to be tackled separately. Control system design has been obtained by manual proportional-integral controller, traditional generalized predictive control, predictive proportional-integral-derivative on the basis of generalized predict
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3

Li, Shenghui, and Zhenxing Sun. "A generalized proportional integral observer–based robust tracking design approach for quadrotor unmanned aerial vehicle." International Journal of Advanced Robotic Systems 19, no. 4 (2022): 172988062211170. http://dx.doi.org/10.1177/17298806221117052.

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This article mainly studies the trajectory tracking control for quadrotor unmanned aerial vehicle with unknown time-varying disturbances including parametric uncertainties, model errors, and external disturbances such as wind effects. Conventional backstepping control schemes usually cannot guarantee the performance when it faces the time-varying disturbances. Improved schemes, such as integral backstepping, can only compensate the disturbances in a relatively slow way. By introducing disturbance observer technology into the design of controller, a composite generalized proportional integral o
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4

Coral Enríquez, Horacio, John Cortés Romero, and Germán A. Ramos. "Energy capture maximization on variable speed wind turbines through generalized proportional integral control." Ingeniería y Desarrollo 32, no. 1 (2014): 41–63. http://dx.doi.org/10.14482/inde.32.1.5166.

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5

Becedas, J., I. Payo, V. Feliu, and H. Sira-Ramírez. "Generalized Proportional Integral Control for a Robot with Flexible Finger Gripper." IFAC Proceedings Volumes 41, no. 2 (2008): 6769–75. http://dx.doi.org/10.3182/20080706-5-kr-1001.01147.

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6

Ren, Chao, and Shugen Ma. "Generalized proportional integral observer based control of an omnidirectional mobile robot." Mechatronics 26 (March 2015): 36–44. http://dx.doi.org/10.1016/j.mechatronics.2015.01.001.

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7

Zhang, Junfeng, Xiao He, and Donghua Zhou. "Generalised proportional–integral–derivative filter." IET Control Theory & Applications 10, no. 17 (2016): 2339–47. http://dx.doi.org/10.1049/iet-cta.2015.0610.

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8

Pérez-Estrada, A. J., G. L. Osorio-Gordillo, M. Darouach, and V. H. Olivares-Peregrino. "Generalized dynamic observer design for quasi-LPV systems." at - Automatisierungstechnik 66, no. 3 (2018): 225–33. http://dx.doi.org/10.1515/auto-2017-0060.

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Abstract This paper presents a new generalized dynamic observer (GDO) for quasi-linear parameter varying (LPV) systems. It generalises the structures of the proportional observer (PO) and proportional integral observer (PIO). The design of the GDO is derived from the solution of linear matrix inequalities (LMIs) and the solution of the algebraic constraints obtained from the estimation error analysis. The efficiency of the proposed approach is illustrated by a numerical example.
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9

Ubarnes, Fernando Regino, Edwin Espinel Blanco, and Angie Ruedas Rodriguez. "Generalized proportional integral control (GPI) design for a ball and beam system." Contemporary Engineering Sciences 11, no. 90 (2018): 4447–54. http://dx.doi.org/10.12988/ces.2018.89485.

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10

Sira-Ramírez, Hebertt. "SLIDING MODES, Δ-MODULATORS, AND GENERALIZED PROPORTIONAL INTEGRAL CONTROL OF LINEAR SYSTEMS". Asian Journal of Control 5, № 4 (2008): 467–75. http://dx.doi.org/10.1111/j.1934-6093.2003.tb00164.x.

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11

Cortés-Romero, John, Germán A. Ramos, and Horacio Coral-Enriquez. "Generalized proportional integral control for periodic signals under active disturbance rejection approach." ISA Transactions 53, no. 6 (2014): 1901–9. http://dx.doi.org/10.1016/j.isatra.2014.07.001.

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12

Chávez Conde, Esteban, Francisco Beltrán Carbajal, Antonio Valderrábano González, and Antonio Favela Contreras. "Active vibration control of vehicle suspension systems using sliding modes, differential flatness and generalized proportional-integral control." Revista Facultad de Ingeniería Universidad de Antioquia, no. 61 (November 15, 2012): 104–13. http://dx.doi.org/10.17533/udea.redin.13542.

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This paper presents a design approach of robust active vibration control schemes for vehicle suspension systems using differential flatness, sliding modes and Generalized Proportional-Integral control techniques to attenuate undesirable vibrations induced by irregular road disturbances. Two control schemes are proposed: one employing position and velocity measurements and other requiring only position measurements. Integral reconstruction of the time derivatives of the flat output up to third order is proposed to avoid the use of velocity and acceleration sensors, as well as information of unk
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13

Tavoosi, Jafar, Mohammadamin Shirkhani, Ali Abdali, et al. "A New General Type-2 Fuzzy Predictive Scheme for PID Tuning." Applied Sciences 11, no. 21 (2021): 10392. http://dx.doi.org/10.3390/app112110392.

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The proportional-integral-derivative controller is widely used in various industrial applications. But, in many noisy problems the strong methods are needed to optimize the proportional-integral-derivative parameters. In this paper, a novel method is introduced for adjusting the proportional-integral-derivative parameters through the model predictive control and generalized type-2 fuzzy-logic systems. The rules of suggested fuzzy system are online adjusted and the parameters of proportional-integral-derivative are tuned based on the fuzzy model such that a cost function to be minimized. The de
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14

Niu, Rongchao, Hongyu Zhang, and Jian Song. "Model Predictive Control of DC–DC Boost Converter Based on Generalized Proportional Integral Observer." Energies 16, no. 3 (2023): 1245. http://dx.doi.org/10.3390/en16031245.

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Due to the nonminimum phase characteristics and nonlinearity of boost converters, the control design is always a challenging issue. A novel model predictive control strategy is proposed for the boost converter in this work. First, the Super-Twisting algorithm is applied to current control, and the input–output plant for voltage control is derived based on the linearization technique. All the model uncertainties are defined as lumped disturbances, and a generalized proportional integral observer is designed to estimate the lumped disturbance. Second, a composite predictive approach is developed
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15

Regino-Ubarnes, F. J., J. A. Gómez-Camperos, and A. F. Ruedas-Rodriguez. "Development of a generalized proportional integral control strategy for level control in a coupled tank system." Journal of Physics: Conference Series 1418 (December 2019): 012016. http://dx.doi.org/10.1088/1742-6596/1418/1/012016.

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16

Qiao, Pengyu, and Hao Sun. "Generalized Proportional Integral Observer and Kalman-Filter-Based Composite Control for DC-DC Buck Converters." Actuators 12, no. 1 (2023): 20. http://dx.doi.org/10.3390/act12010020.

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There are uncertainties and disturbances in the DC-DC buck converters system; in terms of actual working conditions, they are often very complex, exhibiting a polynomial form of time series. Therefore, a single controller and an observer that can only estimate slowly varying disturbances will lose their effectiveness. The generalized proportional integral observer can generally be used to estimate the disturbances in the polynomial form of time series, but it is usually necessary to select a high gain to achieve the fast convergence of the observer, which makes it sensitive to measurement nois
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17

Becedas, J., I. Payo, and V. Feliu. "Generalised proportional integral torque control for single-link flexible manipulators." IET Control Theory & Applications 4, no. 5 (2010): 773–83. http://dx.doi.org/10.1049/iet-cta.2008.0458.

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18

AGUILAR-IBÁÑEZ, CARLOS, MIGUEL SUÁREZ-CASTAÑÓN, and HEBERTT SIRA-RAMÍREZ. "CONTROL OF THE CHUA'S SYSTEM BASED ON A DIFFERENTIAL FLATNESS APPROACH." International Journal of Bifurcation and Chaos 14, no. 03 (2004): 1059–69. http://dx.doi.org/10.1142/s0218127404009594.

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In this paper, we present a flatness based control approach for the stabilization and tracking problem, for the well-known Chua chaotic circuit, that includes an additional input. We introduce two feedback controller design options for the set-point stabilization and the trajectory tracking problem: a direct pole placement approach, and Generalized Proportional Integral (GPI) approach based only on measured inputs and outputs.
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19

Butt, Saad Ihsan, Ahmet Ocak Akdemir, Alper Ekinci, and Muhammad Nadeem. "Inequalities of Chebyshev-Pólya-Szegö type via generalized proportional fractional integral operators." Miskolc Mathematical Notes 21, no. 2 (2020): 717. http://dx.doi.org/10.18514/mmn.2020.3363.

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20

Giap, Van Nam, and Shyh Chour Huang. "Generalized proportional integral disturbance observer-based fuzzy sliding mode control for active magnetic bearing system." IOP Conference Series: Materials Science and Engineering 1113, no. 1 (2021): 012006. http://dx.doi.org/10.1088/1757-899x/1113/1/012006.

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21

Sira-Ramírez, Hebertt. "ON THE GENERALIZED-PROPORTIONAL-INTEGRAL MULTILEVEL SIGMA-DELTA SLIDING MODE CONTROL OF A “BUCK” INVERTER." IFAC Proceedings Volumes 40, no. 12 (2007): 1149–54. http://dx.doi.org/10.3182/20070822-3-za-2920.00190.

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22

Chen, Congyan, Yanduo Wang, and Shihua Li. "Generalized proportional integral observer–based composite control method for robotic thermal tactile sensor with disturbances." International Journal of Advanced Robotic Systems 14, no. 3 (2017): 172988141771003. http://dx.doi.org/10.1177/1729881417710033.

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23

Shiravani, Fahimeh, Jose Antonio Cortajarena, Patxi Alkorta, and Oscar Barambones. "Generalized Predictive Control Scheme for a Wind Turbine System." Sustainability 14, no. 14 (2022): 8865. http://dx.doi.org/10.3390/su14148865.

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In this paper, a generalized predictive control scheme for wind energy conversion systems that consists of a wind turbine and a doubly-fed induction generator is proposed. The design is created by using the maximum power point tracking theory to maximize the extracted wind power, even when the turbine is uncertain or the wind speed varies abruptly. The suggested controller guarantees compliance with current constraints by applying them in the regulator’s conceptual design process to assure that the rotor windings are not damaged due to the over-current. This GPC speed control solves the optimi
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24

Becedas, J., J. R. Trapero, V. Feliu, and H. Sira-Ramirez. "Adaptive Controller for Single-Link Flexible Manipulators Based on Algebraic Identification and Generalized Proportional Integral Control." IEEE Transactions on Systems, Man, and Cybernetics, Part B (Cybernetics) 39, no. 3 (2009): 735–51. http://dx.doi.org/10.1109/tsmcb.2008.2008905.

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25

Zhang, Li Bing, and Ting Wu. "Research on the Positioning Servo Control Strategy for CNC System." Advanced Materials Research 694-697 (May 2013): 1851–54. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.1851.

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In order to overcome thelimitation of the position servo control method of computerized numerical control(CNC) system, a control approach of generalized predictive control (GPC) ispresented in this paper. In the method, the GPC model calculates the optimalcontrol rate through the predictive model and rolling optimization as thecontroller of the position servo system. Compared with GPC and proportional-integral-derivative(PID) control, the simulative and experimental results show that the proposedcontrol approach has better the dynamic performance, steady-state performance,and robustness.
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26

Alkorta, Patxi, Oscar Barambones, Asier Zubizarreta, and José Antonio Cortajarena. "Effective and Robust Generalized Predictive Speed Control of Induction Motor." Mathematical Problems in Engineering 2013 (2013): 1–14. http://dx.doi.org/10.1155/2013/913458.

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This paper presents and validates a new proposal for effective speed vector control of induction motors based on linear Generalized Predictive Control (GPC) law. The presented GPC-PI cascade configuration simplifies the design with regard to GPC-GPC cascade configuration, maintaining the advantages of the predictive control algorithm. The robust stability of the closed loop system is demonstrated by the poles placement method for several typical cases of uncertainties in induction motors. The controller has been tested using several simulations and experiments and has been compared with Propor
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27

Lin, Chien-Hong, and Fu-Yuen Hsiao. "Proportional-Integral Sliding Mode Control with an Application in the Balance Control of a Two-Wheel Vehicle System." Applied Sciences 10, no. 15 (2020): 5087. http://dx.doi.org/10.3390/app10155087.

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A balance control method, the proportional-integral sliding mode control (PISMC), is proposed to control the tilt attitude of an experimental two-wheel vehicle system (TWVS). Based on our previous work of implementing a generalized PISMC to control a linearized dynamical system, this paper extends the algorithm to a wider range: First, the control design of a weighted-control system is proposed. Secondly, our algorithm was realized and verified in a TWVS using its original nonlinear model. Thirdly, a systematical way to tune parameters are presented. The robustness of the proposed algorithm is
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28

Belmonte, Lidia M., Eva Segura, Antonio Fernández-Caballero, José A. Somolinos, and Rafael Morales. "Generalised Proportional Integral Control for Magnetic Levitation Systems Using a Tangent Linearisation Approach." Mathematics 9, no. 12 (2021): 1424. http://dx.doi.org/10.3390/math9121424.

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This paper applies a robust generalised proportional integral (GPI) controller to address the problems of stabilisation and position tracking in voltage-controlled magnetic levitation systems, with consideration of the system’s physical parameters, non-linearities and exogenous disturbance signals. The controller has been developed using as a basis a model of the tangent linearised system around an arbitrary unstable equilibrium point. Since the approximate linearised system is differentially flat, it is therefore controllable. This flatness gives the resulting linearised system a relevant cas
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29

Ramírez-Neria, Mario, Alberto Luviano-Juárez, Jaime González-Sierra, Rodrigo Ramírez-Juárez, Joaquín Aguerrebere, and Eduardo G. Hernandez-Martinez. "Active Disturbance Rejection Control for the Trajectory Tracking of a Quadrotor." Actuators 13, no. 9 (2024): 340. http://dx.doi.org/10.3390/act13090340.

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In the last decade, quadrotors have gained popularity among industry and academia due to their capabilities and the various applications in which they can be found. In addition to the above, because this is an underactuated system, researchers have found it a great challenge to control. Despite this, there is a wide variety of methodologies in the literature to control this type of system. Based on the above, this work proposed an alternative to trajectory tracking control for quadrotor unmanned aerial vehicles (UAV). The problem was divided into two main control loops: an outer control loop f
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30

Ren, Jia, Zengqiang Chen, Mingwei Sun, and Qinglin Sun. "Frequency performance analysis of proportional integral-type active disturbance rejection generalized predictive control for time delay systems." Systems Science & Control Engineering 10, no. 1 (2021): 1–14. http://dx.doi.org/10.1080/21642583.2021.2020182.

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31

Carreño-Zagarra, Jose, Diana Poveda-Rodriguez, and Marco Flórez. "Robust Control of Irrigation Systems Using Predictive Methods and Disturbance Rejection." Inventions 10, no. 1 (2025): 11. https://doi.org/10.3390/inventions10010011.

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Ensuring that the world’s population meets its food needs, despite water restrictions, can be significantly improved by increasing irrigation efficiency and productivity. Achieving this goal necessitates technological advancements in control systems. Therefore, the implementation of effective control systems across the entire irrigation water distribution chain is crucial and requires technological modernization. This paper presents a control scheme that combines the benefits of model predictive control (MPC) and active disturbance rejection by using generalized proportional integral (GPI) obs
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32

Wang, Lihui. "Automatic control of constant temperature and humidity in building air conditioning systems based on frequency domain analysis." International Journal of Renewable Energy Development 13, no. 4 (2024): 618–29. http://dx.doi.org/10.61435/ijred.2024.60102.

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How to solve their automatic control of constant temperature and humidity gradually becomes a research hotspot as the continuous upgrading of air conditioning systems. This study aims to optimize the traditional proportional-integral-differential controller for improvement to solve the time-delay instability phenomenon in temperature and humidity control. The objective of this study is to optimize existing proportional-integral-differential controllers to improve the time-delay instability problem that is common in temperature and humidity control. Firstly, it treats the controlled object as a
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33

Ko, Young-Rae, and Tae-Hyoung Kim. "Feedforward Plus Feedback Control of an Electro-Hydraulic Valve System Using a Proportional Control Valve." Actuators 9, no. 2 (2020): 45. http://dx.doi.org/10.3390/act9020045.

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The output feedback signal of the electro-hydraulic valve system (EHVS) affects the activation of its right or left envelope function; thus, even weak measurement noise can cause high-frequency switching between the two envelope functions, leading to chattering in the control input. Consequently, feedforward and feedback controllers in a cascaded configuration generate undesirable chattering in the output signal. We propose a practical and reliable control approach for an EHVS actuated by a proportional control valve. The proposed controller has a parallel structure comprising an inverse gener
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34

Zhang, Xiao-Yu, Run-Xiao Wang, Shun-Qi Zhang, Zhan-Xi Wang, Xian-Sheng Qin, and Rüdiger Schmidt. "Generalized-Disturbance Rejection Control for Vibration Suppression of Piezoelectric Laminated Flexible Structures." Shock and Vibration 2018 (2018): 1–17. http://dx.doi.org/10.1155/2018/1538936.

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In the framework of disturbance rejection (DR) control, the paper proposes a generalized-disturbance rejection (GDR) control with proportional-integral (PI) observer for vibration suppression of smart structures under any unknown continuous disturbances. In the proposed GDR-PI control, a refined state space model is first constructed, and a generalized disturbance including the disturbance influence matrices, unknown physical disturbances, and state variables is defined. In the closed loop of GDR-PI control, physical disturbances can be counteracted indirectly by feeding back estimated general
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35

Wang, Huanzhi, Yuefei Zuo, Chenhao Zhao, and Christopher H. T. Lee. "Developing a Unified Framework for PMSM Speed Regulation: Active Disturbance Rejection Control via Generalized PI Control." World Electric Vehicle Journal 16, no. 4 (2025): 193. https://doi.org/10.3390/wevj16040193.

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With the growing demand for advanced control algorithms in permanent magnet synchronous motor (PMSM) speed regulation, active disturbance rejection control (ADRC) has garnered significant attention for its simplicity and effectiveness as an alternative to traditional proportional-integral (PI) controllers. However, two key challenges limit its broader application: the lack of an intuitive equivalence analysis that highlights the advantages of ADRC over PI control and the complexity in selecting appropriate extended state observer (ESO) structures within ADRC. To address these issues, this pape
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36

Wu, Chao, Jun Yang, and Qi Li. "GPIO-Based Nonlinear Predictive Control for Flux-Weakening Current Control of the IPMSM Servo System." Energies 13, no. 7 (2020): 1716. http://dx.doi.org/10.3390/en13071716.

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This paper proposes a generalized proportional integral observer (GPIO) based nonlinear predictive control (NPC) for an interior permanent magnet synchronous motor (IPMSM) to improve the flux-weakening (FW) current control performance against the complex nonlinear cross-coupling terms and the IPMSM parameters’ variations. First, the IPMSM is remodeled to further analyze the FW control difficulties caused by such cross-coupling terms and parameters variations. Considering the parameters’ variations as a kind of disturbance, a GPIO is then designed to compensate for such disturbance. A GPIO-base
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37

Zhu, Q. M., and K. Warwick. "A neural network enhanced generalized minimum variance self-tuning proportional, integral and derivative control algorithm for complex dynamic systems." Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 216, no. 3 (2002): 265–73. http://dx.doi.org/10.1177/095965180221600305.

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A neural network enhanced proportional, integral and derivative (PID) controller is presented that combines the attributes of neural network learning with a generalized minimum-variance self-tuning control (STC) strategy. The neuro PID controller is structured with plant model identification and PID parameter tuning. The plants to be controlled are approximated by an equivalent model composed of a simple linear submodel to approximate plant dynamics around operating points, plus an error agent to accommodate the errors induced by linear submodel inaccuracy due to non-linearities and other comp
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38

Zhang, Xiao-Yu, Shun-Qi Zhang, Zhan-Xi Wang, Xian-Sheng Qin, Run-Xiao Wang, and Rüdiger Schmidt. "Disturbance rejection control with H∞ optimized observer for vibration suppression of piezoelectric smart structures." Mechanics & Industry 20, no. 2 (2019): 202. http://dx.doi.org/10.1051/meca/2019015.

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In this paper, a disturbance rejection (DR) control with H∞ optimized observer is developed for vibration suppression of smart structures considering model uncertainties and measurement noise. An electro-mechanically coupled dynamic finite element (FE) model of piezoelectric smart structures is firstly built for control design. Based on the dynamic FE model, the H∞ optimized observer is designed with a dynamic feedback gain which is calculated by H∞ mixed sensitivity optimization. Expected response speed and robustness to model uncertainties and measurement noise are obtained by configuring pr
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39

Mohd Faudzi, Ahmad ’Athif, Nu’man Din Mustafa, and Khairuddin Osman. "Force Control for a Pneumatic Cylinder Using Generalized Predictive Controller Approach." Mathematical Problems in Engineering 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/261829.

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Pneumatic cylinder is a well-known device because of its high power to weight ratio, easy use, and environmental safety. Pneumatic cylinder uses air as its power source and converts it to a possible movement such as linear and rotary movement. In order to control the pneumatic cylinder, controller algorithm is needed to control the on-off solenoid valve with encoder and pressure sensor as the feedback inputs. In this paper, generalized predictive controller (GPC) is proposed as the control strategy for the pneumatic cylinder force control. To validate and compare the performance, proportional-
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40

Lakhe, Rishil Kirankumar, Hicham Chaoui, Mohamad Alzayed, and Shichao Liu. "Universal Control of Permanent Magnet Synchronous Motors with Uncertain Dynamics." Actuators 10, no. 3 (2021): 49. http://dx.doi.org/10.3390/act10030049.

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This paper focuses on the universal control design of permanent magnet synchronous motors (PMSMs) with uncertain system dynamics. In vector control, classical proportional-integral (PI) controllers are used to control d-q axis currents and speed of the PMSM. This paper uses two control methods: conventional field-oriented vector control and simplified control. First, all the control gains are determined for numerous PMSMs with various power ratings using an empirical study and generalized mathematical expressions are derived for each of the gains. Then, these expressions are used for automatic
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41

Wang, Qiang, Xipeng Zeng, and Xiangliu Song. "Reduced Order Generalized Integrator Based Modular Multilevel Converter Loop Current Suppression Strategy under Unbalanced Conditions in Distribution Networks." Energies 17, no. 17 (2024): 4270. http://dx.doi.org/10.3390/en17174270.

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Under the condition of grid voltage imbalance, the circulation of the bridge arm inside the modular multilevel converter (MMC) increases significantly, which leads to the aggravation of the distortion of the bridge arm current, and, thus, increases the system loss and reduces the power quality. To address this problem, this paper analyzes the mechanism of circulating current generation and proposes a circulating current suppression strategy based on a reduced-order generalized integrator (ROGI), which firstly uses the ROGI system to separate the second-harmonic positive- and negative-sequence
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42

Nuchkrua, Thanana, and Shyh-Leh Chen. "Precision contouring control of five degree of freedom robot manipulators with uncertainty." International Journal of Advanced Robotic Systems 14, no. 1 (2016): 172988141668270. http://dx.doi.org/10.1177/1729881416682703.

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In this article, we apply a result in equivalent errors to a contouring control problem of five degree of freedom robot manipulators. The proposed technique, fuzzy Proportional Integral Derivative (PID) with the robust extended Kalman filter, is employed to stabilize the dynamic of equivalent errors of robot manipulators. The shape of membership functions and rules of fuzzy PID controller are tuned following operating conditions that make the control performance to improve significantly. A desired path in terms of the position of the end-effector of the robot manipulators is described in gener
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43

Cortés-Romero, John, Harvey Rojas-Cubides, Horacio Coral-Enriquez, Hebertt Sira-Ramírez, and Alberto Luviano-Juárez. "Active Disturbance Rejection Approach for Robust Fault-Tolerant Control via Observer Assisted Sliding Mode Control." Mathematical Problems in Engineering 2013 (2013): 1–12. http://dx.doi.org/10.1155/2013/609523.

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This work proposes an active disturbance rejection approach for the establishment of a sliding mode control strategy in fault-tolerant operations. The core of the proposed active disturbance rejection assistance is a Generalized Proportional Integral (GPI) observer which is in charge of the active estimation of lumped nonlinear endogenous and exogenous disturbance inputs related to the creation of local sliding regimes with limited control authority. Possibilities are explored for the GPI observer assisted sliding mode control in fault-tolerant schemes. Convincing improvements are presented wi
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44

Yang, Xuan, and Xiaoe Ruan. "Iterative learning control for linear continuous-time switched systems with observation noise." Transactions of the Institute of Measurement and Control 41, no. 4 (2018): 1178–85. http://dx.doi.org/10.1177/0142331218794824.

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The paper attempts to explore the effect of an internal switching mechanism and external noise on the learning performance of a conventional proportional–derivative iterative learning control scheme for linear continuous-time switched systems. The learning behaviour is analysed by virtue of a Lebesgue- p norm and the generalized Young inequality of the convolution integral. The results convey that both asymptotic convergence and robustness of the control algorithm depend mainly on the learning gains and the dynamics of the subsystems, but less on the time-driven switching rule. Given an arbitr
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Lin, Chih-Hsueh, Guo-Hsin Hu, and Jun-Juh Yan. "Chaos Suppression in Uncertain Generalized Lorenz–Stenflo Systems via a Single Rippling Controller with Input Nonlinearity." Mathematics 8, no. 3 (2020): 327. http://dx.doi.org/10.3390/math8030327.

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In this paper, a robust control design of chaos suppression is considered for generalized four-dimensional (4D) Lorenz–Stenflo systems subjected to matched/mismatched uncertainties and input nonlinearity. It is implemented by using rippling sliding mode control (SMC). A proportional-integral (PI) type scalar switching surface is designed such that the controlled dynamics in the sliding manifold becomes easy to analyze. Furthermore, only by using single rippling SMC even with input nonlinearity can we ensure the existence of the sliding mode for the controlled dynamics and suppress the chaotic
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46

He, Chunhui, Haosheng Sun, Qingxiang Wu, Yuanhao Su, and Ning Sun. "GPI observer-based active disturbance rejection control for a morphing quadrotor." Intelligence & Robotics 3, no. 3 (2023): 274–87. http://dx.doi.org/10.20517/ir.2023.18.

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Quadrotors are widely used in transportation, aerial photography, agricultural protection, and other important fields. Nevertheless, quadrotors with a fixed structure will face great challenges when crossing through or entering narrow spaces for operations. To improve quadrotor crossing ability in different environments, a morphing quadrotor is designed in this paper, and four servo motors are added to independently change four arm rotation angles. Meanwhile, the dynamic model and dynamic control allocation matrix are established. In addition, considering that the internal dynamic variation ca
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47

Ben Hariz, Maher, and Faouzi Bouani. "Synthesis and Implementation of a Fixed Low Order Controller on an Electronic System." International Journal of System Dynamics Applications 5, no. 4 (2016): 42–63. http://dx.doi.org/10.4018/ijsda.2016100103.

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The development of microelectronic field and software allows researchers to implement some control law in miniaturized devices such as Field Programmable Gate Arrays (FPGA) and microcontroller. These control laws may be used in industrial applications. The key of this work is the design and the implementation of a fixed low order controller on a STM32 microcontroller in order to control an electronic system. The main objective of this controller is to ensure some time response performances as the settling time and the overshoot. The controller parameters are obtained by resolving a non convex
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48

Coral-Enriquez, Horacio, John Cortés-Romero, and Germán A. Ramos. "Robust Active Disturbance Rejection Control Approach to Maximize Energy Capture in Variable-Speed Wind Turbines." Mathematical Problems in Engineering 2013 (2013): 1–12. http://dx.doi.org/10.1155/2013/396740.

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This paper proposes an alternative robust observer-based linear control technique to maximize energy capture in a 4.8 MW horizontal-axis variable-speed wind turbine. The proposed strategy uses a generalized proportional integral (GPI) observer to reconstruct the aerodynamic torque in order to obtain a generator speed optimal trajectory. Then, a robust GPI observer-based controller supported by an active disturbance rejection (ADR) approach allows asymptotic tracking of the generator speed optimal trajectory. The proposed methodology controls the power coefficient, via the generator angular spe
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49

Liu, Zhuo, Azeddine Houari, Mohamed Machmoum, Mohamed-Fouad Benkhoris, and Tianhao Tang. "An Active FTC Strategy Using Generalized Proportional Integral Observers Applied to Five-Phase PMSG based Tidal Current Energy Conversion Systems." Energies 13, no. 24 (2020): 6645. http://dx.doi.org/10.3390/en13246645.

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In recent years, multi-phase permanent magnet synchronous generators (PMSGs) have become attractive in the field of tidal current energy conversion systems (TCECS) due to their high-power density, reliability, and availability. However, external disturbances and malfunctions in power conversion chains will bring challenges to achieving stable and continuous tidal current energy harnessing. Using generalized proportional integral observers, an active fault-tolerant control (AFTC) strategy is therefore proposed for a five-phase PMSG based TCECS that is subjected to an open switch fault (OSF) in
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50

Hokmabadi, Azam, and Mahdi Khodabandeh. "Unfalsified control design using a generalized cost function for a quadrotor." Aircraft Engineering and Aerospace Technology 93, no. 2 (2021): 241–50. http://dx.doi.org/10.1108/aeat-01-2020-0019.

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Purpose The purpose of this paper is to design a controller for a quadrotor only by using input–output data without a need for the system model. Design/methodology/approach Tracking control for the quadrotor is considered by using unfalsified control, which is one of the most recent strategies of robust adaptive control. The main assumption in unfalsified control design is that there is no access to the system model. Also, ideal path tracking and controlling the quadrotor are been paid attention to in the presence of external disturbances and uncertainties. First, unfalsified control method is
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