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Journal articles on the topic 'Outer loops controller'

Author: Grafiati

Published: 4 June 2025

Last updated: 15 July 2025

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1

Mohammadi, Mostafa, Alireza Mohammad Shahri, and Zahra Boroujeni. "Modeling and Adaptive Tracking Control of a Quadrotor UAV." International Journal of Intelligent Mechatronics and Robotics 2, no. 4 (2012): 58–81. http://dx.doi.org/10.4018/ijimr.2012100105.

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The dynamics of UAV’s have special features that can complicate the process of designing a trajectory tracking controller. In this paper, after modelling the quadrotor as a VTOL UAV, a nonlinear adaptive controller is designed to solve trajectory tracking problem in the presence of parametric and nonparametric uncertainties. This controller doesn’t need knowing any physical parameters of the quadrotor, and there isn’t need to retune the controller for various payloads. In this approach, the control of a quadrotor is performed by using decentralized adaptive controllers in the inner (attitude c

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2

Opeiko, O. F. "CONTROL SYNTHESIS FOR TWO LOOPS DISCRET SYSTEM." «System analysis and applied information science», no. 1 (June 12, 2018): 22–26. http://dx.doi.org/10.21122/2309-4923-2018-1-22-26.

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The aim of this paper is the linear synthesis of two loops SISO systems with discreet time proportional integral (PI) controllers. This linear synthesis is dedicated for the systems with plant parameters uncertainty. The synthesis is based on the time scale method, providing the separate slow and fast components of the control low. The PI- controller parameters calculation is based on the modal control and plant model reduction. The conditions carried out for the each control loop dynamics still similar to the second order one. The discrete time microcontroller based numerical control restrict

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Jastrzębski, Rafał P., Alexander Smirnov, and Olli Pyrhönen. "Force Controllers for AMB Systems with Position and Current Feedback." Solid State Phenomena 198 (March 2013): 495–500. http://dx.doi.org/10.4028/www.scientific.net/ssp.198.495.

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In this paper, the state-of-the-art AMB controller structure, with an outer centralized position control loop with reference currents and inner current control loops, is replaced with an outer control loop with force references and inner flux control loops. The linearization of the force actuators and different control schemes of the centralized outer control for the radial suspension are considered. The operation of the proposed control under a zero bias is verified by simulations. The proposed control solution can achieve a dynamic performance comparable with that of a controller with the cl

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Kroičs, Kaspars, Kristiāns Gaspersons, and Mariusz Zdanowski. "Modular DC-DC Converter with Adaptable Fast Controller for Supercapacitor Energy Storage Integration into DC Microgrid." Electronics 14, no. 4 (2025): 700. https://doi.org/10.3390/electronics14040700.

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Supercapacitors are well suited for braking energy recovery in electrical drive applications and for voltage sag compensation. For voltage-sensitive devices, only a small voltage deviation can be acceptable, and therefore the voltage controller should be fast. This paper analyzes the design of such a controller for DC bus voltage stabilization considering a GaN transistor-based converter with a 400 kHz switching frequency. Inner and outer loop controller design considering delays caused by the digital nature of the controllers has been analyzed in the paper. This paper proposes to use adaptabl

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Vo, Thanh Ha, and Thi Giang Pham. "Control for induction motor drives using predictive model stator currents and speeds control." International Journal of Power Electronics and Drive Systems 13, no. 4 (2022): 2005~2013. https://doi.org/10.11591/ijpeds.v13.i4.pp2005-2013.

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This paper is presented for designing a new controller using the predictive model current and speed control method for the asynchronous motor. This control method is based on traditional predictive controller development to have a cascade structure similar to the rotor flux control (field-oriented control) and direct torque control (DTC). Therefore, this control method will have two control loops. Both inner and outer loop controllers use predictive power. The outer ring is speed control, while the internal circle is stator current control. The inner loop is based on the finite control set &nd

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Rath, Prabodha, and Kanhu Bhuyan. "Vector Control of VSC HVDC System under Single Line to Ground Fault Condition." International Journal of Applied Power Engineering 7, no. 1 (2018): 59–64. https://doi.org/10.11591/ijape.v7.i1.pp59-64.

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This paper proposes a model of a VSC (voltage source converter) based back to back HVDC system and its control technique under fault condition. From the mathematical model of the system relationship between the controlling and the controlled variables is determined to control the system parameters. An appropriate vector control technique is used to control active and reactive power and to maintain DC link voltage. The proposed controlling unit consists of outer control loop and inner control loop which effectively damped out the system oscillation and maintains the system stability. The validi

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Ramana, Pilla, Karlapudy Alice Mary, and Munagala Surya Kalavathi. "State Feedback Linearization of a Non-linear Permanent Magnet Synchronous Motor Drive." Indonesian Journal of Electrical Engineering and Computer Science 1, no. 3 (2016): 534. http://dx.doi.org/10.11591/ijeecs.v1.i3.pp534-542.

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Control system design for inverter fed drives previously used the classical transfer function approach for single-input singleoutput (SISO) systems. Proportional plus Integral (PI) controllers were designed for individual control loops.It is found that the transient response of a PI controller is slow and is improved by pole placement through state feedback. However, the effective gains of the PI controller are substantially decreased as a function of the increase of motor speed. A control system is generally characterized by the hierarchy of the control loops, where the outer loop controls th

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Ha, Vo Thanh, and Pham Thi Giang. "Control for induction motor drives using predictive model stator currents and speeds control." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 4 (2022): 2005. http://dx.doi.org/10.11591/ijpeds.v13.i4.pp2005-2013.

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<span>This paper is presented for designing a new controller using the predictive model current and speed control method for the asynchronous motor. This control method is based on traditional predictive controller development to have a cascade structure similar to the rotor flux control (field-oriented control) and direct torque control (DTC). Therefore, this control method will have two control loops. Both inner and outer loop controllers use predictive power. The outer ring is speed control, while the internal circle is stator current control. The inner loop is based on the finite con

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9

Rico-Azagra, Javier, and Montserrat Gil-Martínez. "Robust Cascade Control inside a New Model-Matching Architecture." Mathematics 11, no. 11 (2023): 2523. http://dx.doi.org/10.3390/math11112523.

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Whenever additional states of a plant can be measured, closing nested feedback loops can be exploited in a variety of ways. The goal here is to reduce the bandwidth of feedback controllers and thus reduce the amplification of sensor noise that can otherwise spoil the expected performance when the actuator saturates. This can be particularly relevant for demanding tracking specifications and large plant uncertainties. In this context, the current work proposes a novel model-matching control architecture with a feedforward controller and two feedback controllers, which is accompanied by a new ro

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Hu, Kai-Yu, Chunxia Yang, and Wenjing Sun. "Adaptive Sliding Mode Fault Compensation for Sensor Faults of Variable Structure Hypersonic Vehicle." Sensors 22, no. 4 (2022): 1523. http://dx.doi.org/10.3390/s22041523.

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This paper investigates the sensor fault detection and fault-tolerant control (FTC) technology of a variable-structure hypersonic flight vehicle (HFV). First, an HFV nonlinear system considering sensor compound faults, disturbance, and the variable structure parameter is established, which is divided into the attitude angle outer and angular rate inner loops. Then a nonlinear fault integrated detector is proposed to detect the moment of fault occurrence and provide the residual to design the sliding mode equations. Furthermore, the sliding mode method combined with the virtual adaptive control

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11

Yang, En Chao, Qing Wei, Run Bin Cai, and Hong Xu Ma. "Research on the Hydraulic Actuator Control of the Quadruped Robot Based Dual-Loop." Advanced Materials Research 569 (September 2012): 533–38. http://dx.doi.org/10.4028/www.scientific.net/amr.569.533.

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This paper presents modeling and dual-loop control of a non-linear hydraulic actuator applied on the quadruped robot. The pure position control of the actuator is hard to achieve because it’s a three-order system. So we propose the dual-loop control method to decompose it. The controller structure of the system is composed of two loops namely outer position control loop and inner force control loop. Outer loop controller is used to calculate the optimum target force to reject the errors of the position control, while, the inner loop controller is used to keep the actual force close to this des

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J.Senthilnathan. "Speed Control of PMDC Motor." Journal of Control System and Control Instrumentation 5, no. 1 (2019): 9–14. https://doi.org/10.5281/zenodo.2579563.

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This paper is about speed control of permanent magnet DC shunt motor using a buck converter as chopper. The buck converter receives firing signals from the controller and produces the output voltage accordingly which is used to maintain the speed of the DC motor at constant speed. The closed loop control has two main loops, one is inner current control loop and outer speed control loop. The controller used for closed loop control is PI controller which is simulated using MATLAB(SIMULINK) software.  

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Nguyen Hoai Nam. "CONTROL OF TWO-WHEELED INVERTED PENDULUM ROBOT USING ROBUST PI AND LQR CONTROLLERS." Journal of Military Science and Technology, no. 66A (May 6, 2020): 1–15. http://dx.doi.org/10.54939/1859-1043.j.mst.66a.2020.1-15.

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In this paper, a robust PI controller in combination with a linear quadratic regulator (LQR) is proposed to control a two-wheeled inverted pendulum robot (TWIPR) such that it is kept balanced while moving. The proposed TWIPR control system consists of two control loops. The inner loop has two PI controllers for two DC motors’ currents, which are separately designed based on a robust PI controller structure. The outer loop contains a LQR controller for the tilt angle, heading angle and position of the TWIPR. The proposed PI controller is compared to the existing method such as the magnitude opt

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Maurya, Pramod, Helio Mitio Morishita, Antonio Pascoal, and A. Pedro Aguiar. "A Path-Following Controller for Marine Vehicles Using a Two-Scale Inner-Outer Loop Approach." Sensors 22, no. 11 (2022): 4293. http://dx.doi.org/10.3390/s22114293.

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This article addresses the problem of path following of marine vehicles along straight lines in the presence of currents by resorting to an inner-outer control loop strategy, with due account for the presence of currents. The inner-outer loop control structures exhibit a fast-slow temporal scale separation that yields simple “rules of thumb” for controller tuning. Stated intuitively, the inner-loop dynamics should be much faster than those of the outer loop. Conceptually, the procedure described has three key advantages: (i) it decouples the design of the inner and outer control loops, (ii) th

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Bennia, Ilyas, Elhoussin Elbouchikhi, Abdelghani Harrag, et al. "Design, Modeling, and Validation of Grid-Forming Inverters for Frequency Synchronization and Restoration." Energies 17, no. 1 (2023): 59. http://dx.doi.org/10.3390/en17010059.

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This paper focuses on the modeling, analysis, and design of grid-forming (GFM) inverter-based microgrids (MGs). It starts with the development of a mathematical model for three-phase voltage source inverters (VSI). The voltage and current controllers consist of two feedback loops: an outer feedback loop of the capacitance-voltage and an inner feedback loop of the output inductance current. The outer voltage loop is employed to enhance the controller’s response time. The inner current loop is used to provide active damping for the resonance created by the LCL filter. A two-layer control scheme

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Badis, Afef, Mohamed Nejib Mansouri, and Mohamed Habib Boujmil. "Cascade Control of Grid-Connected PV Systems Using TLBO-Based Fractional-Order PID." International Journal of Photoenergy 2019 (May 16, 2019): 1–17. http://dx.doi.org/10.1155/2019/4325648.

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Cascade control is one of the most efficient systems for improving the performance of the conventional single-loop control, especially in the case of disturbances. Usually, controller parameters in the inner and the outer loops are identified in a strict sequence. This paper presents a novel cascade control strategy for grid-connected photovoltaic (PV) systems based on fractional-order PID (FOPID). Here, simultaneous tuning of the inner and the outer loop controllers is proposed. Teaching-learning-based optimization (TLBO) algorithm is employed to optimize the parameters of the FOPID controlle

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17

Algamluoli, Ammar Falah, and Nizar Hadi Abbas. "Speed controller design for three-phase induction motor based on dynamic adjustment grasshopper optimization algorithm." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 2 (2021): 1143. http://dx.doi.org/10.11591/ijece.v11i2.pp1143-1157.

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Three-phase induction motor (TIM) is widely used in industrial application like paper mills, water treatment and sewage plants in the urban area. In these applications, the speed of TIM is very important that should be not varying with applied load torque. In this study, direct on line (DOL) motor starting without controller is modelled to evaluate the motor response when connected directly to main supply. Conventional PI controller for stator direct current and stator quadrature current of induction motor are designed as an inner loop controller as well as a second conventional PI controller

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Ammar, Falah Algamluoli, and Hadi Abbas Nizar. "Speed controller design for three-phase induction motor based on dynamic adjustment grasshopper optimization algorithm." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 2 (2021): 1143–57. https://doi.org/10.11591/ijece.v11i2.pp1143-1157.

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Three-phase induction motor (TIM) is widely used in industrial application like paper mills, water treatment and sewage plants in the urban area. In these applications, the speed of TIM is very important that should be not varying with applied load torque. In this study, direct on line (DOL) motor starting without controller is modelled to evaluate the motor response when connected directly to main supply. Conventional PI controller for stator direct current and stator quadrature current of induction motor are designed as an inner loop controller as well as a second conventional PI controller

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19

Gnanavadivel, J., N. Senthil Kumar, C. N. Naga Priya, and K. S. Krishna Veni. "Investigation of Power Quality Improvement in Super Lift Luo Converter." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 3 (2017): 1240. http://dx.doi.org/10.11591/ijpeds.v8.i3.pp1240-1250.

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<p align="justify">This paper presents the improved single phase AC-DC super lift Luo converter for enhancing quality of power by mitigating the issues. The proposed converter is used for output voltage control, power factor improvement and reduced source current harmonics at supply side. The main intention of this work is to design appropriate closed loop controllers for this AC-DC super lift Luo converter to achieve unity power factor in the source end. The designed control system comprises of two control loops, voltage control in outer loop and the current controller is devised in the

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20

Jia, Wei, and Linhan Qiao. "A genetic algorithm based PID fine-tuning scheme for quadrotor flight control." Journal of Physics: Conference Series 2977, no. 1 (2025): 012075. https://doi.org/10.1088/1742-6596/2977/1/012075.

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Abstract In this paper, an optimal adaptive proportional-integral-derivative (PID) controller to finish trajectory tracking and attitude control missions is proposed. First, a quadrotor model is designed in two controller loops, one is the position outer loop and another is the attitude inner loop. Then, a genetic algorithm (GA) is used to fine-tun the parameters of the PID controller, and an adaptive law is designed. The Euler-Lagrange equation is used to optimize the linear-quadratic regulator (LQR) cost of this controller. Compared with traditional pure PID performance, the simulation resul

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Musengimana, Antoine, Haoyu Li, Xuemei Zheng, and Yanxue Yu. "Small-Signal Model and Stability Control for Grid-Connected PV Inverter to a Weak Grid." Energies 14, no. 13 (2021): 3907. http://dx.doi.org/10.3390/en14133907.

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This paper presents a small signal stability analysis to assess the stability issues facing PV (photovoltaic) inverters connected to a weak grid. It is revealed that the cause of the transient instabilities, either high-frequency or low-frequency oscillations, is dominated by the outer control loops and the grid strength. However, most challenging oscillations are low-frequency oscillations induced by coupling interaction between the outer loop controller and PLL (Phase-Locked Loop) when the inverter is connected to a weak grid. Therefore, the paper proposes a low-frequency damping methodology

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Kulakov, G. T., and K. I. Artsiomenka. "Synthesis of Boiler Controllers of the Automatic Power Control System of Power Units." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 63, no. 3 (2020): 223–35. http://dx.doi.org/10.21122/1029-7448-2020-63-3-223-235.

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The article concerns the problem of structure-and-parametric optimization of a cascade automatic control system (CACS) by an example of a boiler power controller and a fuel controller. This CACS, which is a part of automatic control systems for power units, consists of two loops, viz. of an inner loop (which purpose is stabilization of the system) and an outer loop (designed for the adjustment) and, also, of two controller, viz. an outer controller (which is a basic one) provided for stabilization of the output value of the object (in our case, of the actual power unit capacity) and of an inne

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Zhang, Wen Ming, Yong Xin Li, Xing Lai Ge, and Yang Lu. "Optimized Design of Double-Loops Controller for Single-Phase Pulse Rectifier without LC Resonant Filter Circuit." Advanced Materials Research 1061-1062 (December 2014): 1031–38. http://dx.doi.org/10.4028/www.scientific.net/amr.1061-1062.1031.

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Research on the lightweight issue of DC-link is an important direction in modern AC drive electric locomotive. Canceling LC filter circuit is an important way to achieve the goal of lightweight. Therefore, this paper focuses on single-phase pulse rectifier without LC filter circuit. The generation mechanism of DC voltage ripple and network-side current harmonics in grid-side converter is derived. Then, aiming to eliminate the current harmonics, the N-order notch filter and PR controller are introduced to the double-loops controller. The loop of voltage outer controller with N-order notch filte

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K. Roy, Tushar. "Robust Backstepping Controller for Inner and Outer Loops Control of a Small-Scale Helicopter." Universal Journal of Electrical and Electronic Engineering 2, no. 1 (2014): 30–36. http://dx.doi.org/10.13189/ujeee.2014.020105.

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Ha, Viet Quoc, Sen Huong-Thi Pham, and Nga Thi-Thuy Vu. "Adaptive Fuzzy Type-II Controller for Wheeled Mobile Robot with Disturbances and Wheelslips." Journal of Robotics 2021 (September 14, 2021): 1–11. http://dx.doi.org/10.1155/2021/6946210.

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This paper proposed adaptive fuzzy type-II controllers for the wheeled mobile robot (WMR) systems under conditions of wheel slips and disturbances. The system includes two control loops: outer loop for position tracking and the inner loop for velocity tracking. In each loop, the controller has two parts: the feedback which keeps the system stable and the adaptive type-II fuzzy part which is used to compensate the unknown components that act on the system. The stability of each loop as well as the overall system is proven mathematically based on the Lyapunov theory. Finally, the simulation is s

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Nicola, Marcel, and Claudiu-Ionel Nicola. "Sensorless Fractional Order Control of PMSM Based on Synergetic and Sliding Mode Controllers." Electronics 9, no. 9 (2020): 1494. http://dx.doi.org/10.3390/electronics9091494.

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The field oriented control (FOC) strategy of the permanent magnet synchronous motor (PMSM) includes all the advantages deriving from the simplicity of using PI-type controllers, but inherently the control performances are limited due to the nonlinear model of the PMSM, the need for wide-range and high-dynamics speed and load torque control, but also due to the parametric uncertainties which occur especially as a result of the variation of the combined rotor-load moment of inertia, and of the load resistance. Based on the fractional calculus for the integration and differentiation operators, th

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Wang, Yao-Nan, and Tran Minh Hai. "Disturbance and uncertainty estimator-based cascaded position-current controller for active magnetic bearing system." Advances in Mechanical Engineering 11, no. 3 (2019): 168781401983535. http://dx.doi.org/10.1177/1687814019835357.

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This article presents a robust control method; all of the unknown disturbances and uncertainty values will be rejected. Suspension of active magnetic bearing system is aimed to figure out that the proposed control method is implementable for highly nonlinear unstable system. First, system state is described by dynamic model, with unknown lump of uncertainty value. Subsequently, the cascade control with inner and outer loops is defined by sliding mode control based on disturbance and uncertainty estimator. The outer control loop is used to force the system state converge on the predefined surfa

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Tuan, Hua Minh, Filippo Sanfilippo, and Nguyen Vinh Hao. "A Novel Adaptive Sliding Mode Controller for a 2-DOF Elastic Robotic Arm." Robotics 11, no. 2 (2022): 47. http://dx.doi.org/10.3390/robotics11020047.

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Collaborative robots (or cobots) are robots that are capable of safely operating in a shared environment or interacting with humans. In recent years, cobots have become increasingly common. Compliant actuators are critical in the design of cobots. In real applications, this type of actuation system may be able to reduce the amount of damage caused by an unanticipated collision. As a result, elastic joints are expected to outperform stiff joints in complex situations. In this work, the control of a 2-DOF robot arm with elastic actuators is addressed by proposing a two-loop adaptive controller.

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Ghazi Bashaw, Faisal, Intisar Khalaf Salih, and Ghanim Thiab Hasan. "Study and Evaluation a New Predictive Control Method for Speed and Stator Current Control of Induction Motor." BIO Web of Conferences 97 (2024): 00109. http://dx.doi.org/10.1051/bioconf/20249700109.

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It is clear that modern industries rely heavily on electric motors, especially induction motors. These motors convert electrical energy into mechanical energy. The distinction in the performance of the induction motor lies in that it is powerful when exposed to various operational and environmental variables, and it is also inexpensive. However, there are many traditional disadvantages that appear during the operation of the induction motor in its non-linear mechanical properties in addition to the difficulty in regulating the speed of the motor. In this paper , we present a new control method

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Merheb, Abdel-Razzak, Hassan Noura, and François Bateman. "Design of passive fault-tolerant controllers of a quadrotor based on sliding mode theory." International Journal of Applied Mathematics and Computer Science 25, no. 3 (2015): 561–76. http://dx.doi.org/10.1515/amcs-2015-0042.

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Abstract In this paper, sliding mode control is used to develop two passive fault tolerant controllers for an AscTec Pelican UAV quadrotor. In the first approach, a regular sliding mode controller (SMC) augmented with an integrator uses the robustness property of variable structure control to tolerate partial actuator faults. The second approach is a cascaded sliding mode controller with an inner and outer SMC loops. In this configuration, faults are tolerated in the fast inner loop controlling the velocity system. Tuning the controllers to find the optimal values of the sliding mode controlle

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Capello, Elisa, Giorgio Guglieri, and Gianluca Ristorto. "Guidance and control algorithms for mini UAV autopilots." Aircraft Engineering and Aerospace Technology 89, no. 1 (2017): 133–44. http://dx.doi.org/10.1108/aeat-10-2014-0161.

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Purpose The aim of this paper is the implementation and validation of control and guidance algorithms for unmanned aerial vehicle (UAV) autopilots. Design/methodology/approach The path-following control of the UAV can be separated into different layers: inner loop for pitch and roll attitude control, outer loop on heading, altitude and airspeed control for the waypoints tracking and waypoint navigation. Two control laws are defined: one based on proportional integrative derivative (PID) controllers both for inner and outer loops and one based on the combination of PIDs and an adaptive controll

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Chen, Zihui, and Xiao Xiao. "Control of High-altitude Power Grid Inspection UAV Using Hierarchical PID Based on Reinforcement Learning." Highlights in Science, Engineering and Technology 76 (December 31, 2023): 79–87. http://dx.doi.org/10.54097/tta89p40.

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Unmanned aerial vehicles (UAVs) are now being utilized in a wide range of work scenarios to replace humans in performing dangerous tasks and jobs. In the context of high-altitude power grid inspections, UAV inspections have significant advantages. However, the complex environment often poses challenges for controlling UAVs. Building upon traditional PID control, this paper uses MATLAB software to construct the dynamic model and controller of a quadcopter UAV. A cascaded loop is established by selecting the control objects for the inner and outer loops. The stabilization of the UAV is achieved

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Sanders, D., G. Tewkesbury, M. Haddad, P. Kyberd, S. Zhou, and M. Langner. "Control of a Semi-autonomous Powered Wheelchair." Journal of Physics: Conference Series 2224, no. 1 (2022): 012098. http://dx.doi.org/10.1088/1742-6596/2224/1/012098.

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Abstract A model reference controller for a powered wheelchair is described. The chair is fitted with sensor systems to assist a disabled user with steering their chair. The controller can cope with varying circumstances and situations. Non-linear terms are compensated for using an adaptive and automatic scheme. Consistent and dependable veer-controll is considered and the system was able to deal with uncertainties, for example changing surfaces, different shifting weights of users, hills, bumps, slopes and differences in tires and wheels. The controller has a quasi-linear closed-loop behaviou

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Sain, Chiranjit, Atanu Banerjee, and Pabitra Kumar Biswas. "Comparative Performance Study for Closed Loop Operation of an Adjustable Speed Permanent Magnet Synchronous Motor Drive with Different Controllers." International Journal of Power Electronics and Drive Systems (IJPEDS) 7, no. 4 (2016): 1085. http://dx.doi.org/10.11591/ijpeds.v7.i4.pp1085-1099.

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In this paper an extensive comparative study is carried out between PI and PID controlled closed loop model of an adjustable speed Permanent Magnet Synchronous Motor (PMSM) drive. The incorporation of Sinusoidal Pulse Width Modulation (SPWM) strategy establishes near sinusoidal armature phase currents and comparatively less torque ripples without sacrificing torque/weight ratio. In this closed loop model of PMSM drive, the information about reference speed is provided to a speed controller, to ensure that actual drive speed tracks the reference speed with ideally zero steady state speed error.

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Boussouar, Mohamed Essalih, Abdelghani Chelihi, Khaled Yahia, and Antonio J. Marques Cardoso. "Model-free predictive current control of Syn-RM based on time delay estimation approach." Journal of Electrical Engineering 74, no. 5 (2023): 344–56. http://dx.doi.org/10.2478/jee-2023-0042.

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Abstract This paper investigates an optimal model-free control design for a synchronous reluctance motor (Syn-RM) with unknown nonlinear dynamic functions, parameter variations, and disturbances. The idea is to combine a predictive control with a time-delay estimation technique (TDE) in order to successfully deal with the system’s uncertainties and make the Syn-RM control scheme easy to implement in real-time. This model-free control strategy comprises two cascade control loops namely outer and inner loops. The outer loop is designed for the mechanical part of Syn-RM to ensure the convergence

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Ramos-Paja, Carlos Andrés, Juan David Bastidas-Rodríguez, and Daniel González-Montoya. "Non-linear controller for storage systems with regulated outputvoltage and safecurrent slew-rate for the battery." Revista UIS Ingenierías 19, no. 3 (2020): 117–29. http://dx.doi.org/10.18273/revuin.v19n3-2020012.

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This paper proposes a non-linear control structure for a hybrid energy storage system with a series architecture, which regulates the voltage of a DC bus (output voltage) and ensures that the battery current fulfills the current slew-rate restriction. The proposed solution has two stages, in the first one, the battery is connected to a buck/boost converter that feeds an auxiliary capacitor. In the second stage, the auxiliary capacitor is connected to a DC bus through a second buck/boost converter. Both converters are regulated using cascaded control systems, where the inner loops are slidingmo

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37

Lv, Yulong, and Yongkang Shi. "Modeling and Control of Quadcopter Based on Sliding Mode Robust Control in the Wind Field." Journal of Physics: Conference Series 2450, no. 1 (2023): 012032. http://dx.doi.org/10.1088/1742-6596/2450/1/012032.

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Abstract Due to the low flying height, quadrotors are easily affected by external wind disturbances. In this paper, the dynamic model of the quadrotor flying in the wind field is established according to the Newton-Euler equation. The model introduces a weight function due to the phenomenon that different rotors are affected differently by the wind field due to their different positions relative to the wind field, and a sliding mode robust controller based on inner and outer loops is designed. The verification of the control system is carried out by means of simulation in a Gazebo and actual f

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38

El-Sousy, Fayez F. M., Mohammed H. Alqahtani, Ali S. Aljumah, Mokhtar Aly, Sulaiman Z. Almutairi, and Emad A. Mohamed. "Design Optimization of Improved Fractional-Order Cascaded Frequency Controllers for Electric Vehicles and Electrical Power Grids Utilizing Renewable Energy Sources." Fractal and Fractional 7, no. 8 (2023): 603. http://dx.doi.org/10.3390/fractalfract7080603.

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Recent developments in electrical power grids have witnessed high utilization levels of renewable energy sources (RESs) and increased trends that benefit the batteries of electric vehicles (EVs). However, modern electrical power grids cause increased concerns due to their continuously reduced inertia resulting from RES characteristics. Therefore, this paper proposes an improved fractional-order frequency controller with a design optimization methodology. The proposed controller is represented by two cascaded control loops using the one-plus-proportional derivative (1 + PD) in the outer loop an

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Kali, Yassine, Magno Ayala, Jorge Rodas, et al. "Current Control of a Six-Phase Induction Machine Drive Based on Discrete-Time Sliding Mode with Time Delay Estimation." Energies 12, no. 1 (2019): 170. http://dx.doi.org/10.3390/en12010170.

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This paper proposes a robust nonlinear current controller that deals with the problem of the stator current control of a six-phase induction motor drive. The current control is performed by using a state-space representation of the system, explicitly considering the unmeasurable states, uncertainties and external disturbances. To estimate these latter effectively, a time delay estimation technique is used. The proposed control architecture consists of inner and outer loops. The inner current control loop is based on a robust discrete-time sliding mode controller combined with a time delay esti

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Merabet, Adel. "Cascade Second Order Sliding Mode Control for Permanent Magnet Synchronous Motor Drive." Electronics 8, no. 12 (2019): 1508. http://dx.doi.org/10.3390/electronics8121508.

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This paper presents a cascade second-order sliding mode control scheme applied to a permanent magnet synchronous motor for speed tracking applications. The control system is comprised of two control loops for the speed and the armature current control, where the command of the speed controller (outer loop) is the reference of the q-current controller (inner loop) that forms the cascade structure. The sliding mode control algorithm is based on a single input-output state space model and a second order control structure. The proposed cascade second order sliding mode control approach is validate

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Sun, Jinwei, and Kai Zhao. "Adaptive neural network sliding mode control for active suspension systems with electrohydraulic actuator dynamics." International Journal of Advanced Robotic Systems 17, no. 4 (2020): 172988142094198. http://dx.doi.org/10.1177/1729881420941986.

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The object of this article is to design an observer-based adaptive neural network sliding mode controller for active suspension systems. A general nonlinear suspension model is established, and the electrohydraulic actuator dynamics are considered. The proposed controller is decomposed into two loops. Since the dynamics of the actuator is assumed highly nonlinear with uncertainties, the adaptive neural network is presented in the inner loop to ensure the control system robustness against uncertainties, and the self-tuning weighting vector is adjusted online according to the updated law obtaine

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Zaghar, Fatim-Zahra, Zineb Hekss, Mohamed Rafi, Salwa Echalih, and Abdraouf Ridah. "A novel nonlinear controller design of three-phase grid-tied photovoltaic system." International Journal of Power Electronics and Drive Systems (IJPEDS) 15, no. 3 (2024): 1499. http://dx.doi.org/10.11591/ijpeds.v15.i3.pp1499-1507.

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This paper explores the challenges associated with the control of a two-stage three-phase electrical grid connected to a photovoltaic (PV) system. The core control objectives encompass: i) Maximizing the utilization of available power from the PV panel; ii) Regulating the DC-link voltage to a predetermined reference; and iii) Ensuring power factor correction (PFC) on the grid side. To achieve these objectives, two loops nonlinear controller are developed. In the outer loop, the duty cycle of a boost converter is controlled using integral backstepping technique with the perturb &amp; observ

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Zaghar, Fatim-Zahra, Zineb Hekss, Mohamed Rafi, Salwa Echalih, and Abdrraouf Ridah. "A novel nonlinear controller design of three-phase grid-tied photovoltaic system." International Journal of Power Electronics and Drive Systems (IJPEDS) 15, no. 3 (2024): 1499–507. https://doi.org/10.11591/ijpeds.v15.i3.pp1499-1507.

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This paper explores the challenges associated with the control of a two-stage three-phase electrical grid connected to a photovoltaic (PV) system. The core control objectives encompass: i) Maximizing the utilization of available power from the PV panel; ii) Regulating the DC-link voltage to a predetermined reference; and iii) Ensuring power factor correction (PFC) on the grid side. To achieve these objectives, two loops nonlinear controller are developed. In the outer loop, the duty cycle of a boost converter is controlled using integral backstepping technique with the perturb & observe (P

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Dawit, Gizachew Misikir. "Hierarchical Sliding Mode Control Design for Stabilization of Underactuated Wheeled Acrobot." International Journal of Inventive Engineering and Sciences (IJIES) 11, no. 12 (2024): 7–11. https://doi.org/10.35940/ijies.E7383.11121224.

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<strong>Abstract:</strong> This paper presents the hierarchical sliding mode control (HSMC)--based stabilization problem of the wheeled Acrobot (WAcrobot) system, which combines an actuated wheel that rolls in the horizontal plane with an Acrobot consisting of two inverted pendulum links. These links are driven by an actuator at the second joint and freely rotate in a vertical plane. The stabilization problem of the WAcrobot, previously addressed using switch-based controllers in many studies, is solved in this work by designing a single-stage controller without requiring switching steps or ti

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Tran, Dai-Duong, Sajib Chakraborty, Yuanfeng Lan, Mohamed El Baghdadi, and Omar Hegazy. "NSGA-II-Based Codesign Optimization for Power Conversion and Controller Stages of Interleaved Boost Converters in Electric Vehicle Drivetrains." Energies 13, no. 19 (2020): 5167. http://dx.doi.org/10.3390/en13195167.

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This article proposes a holistic codesign optimization framework (COF) to simultaneously optimize a power conversion stage and a controller stage using a dual-loop control scheme for multiphase SiC-based DC/DC converters. In this study, the power conversion stage adopts a non-isolated interleaved boost converter (IBC). Besides, the dual-loop control scheme uses type-III controllers for both inner- and outer- loops to regulate the output voltage of the IBC and tackle its non-minimum phase issue. Based on the converter architecture, a multi-objective optimization (MOO) problem including four obj

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Balcha, Wosene Yirga, and Dawit Gizachew Misikir. "Hierarchical Sliding Mode Control Design for Stabilization of Underactuated Wheeled Acrobot System." International Journal of Inventive Engineering and Sciences 11, no. 12 (2024): 7–11. https://doi.org/10.35940/ijies.e7383.11121224.

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This paper presents the hierarchical sliding mode control (HSMC)--based stabilization problem of the wheeled Acrobot (WAcrobot) system, which combines an actuated wheel that rolls in the horizontal plane with an Acrobot consisting of two inverted pendulum links. These links are driven by an actuator at the second joint and freely rotate in a vertical plane. The stabilization problem of the WAcrobot, previously addressed using switch-based controllers in many studies, is solved in this work by designing a single-stage controller without requiring switching steps or time. The design approach com

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Noman, Abdullah M., Mokhtar Aly, Mohammed H. Alqahtani, et al. "Optimum Fractional Tilt Based Cascaded Frequency Stabilization with MLC Algorithm for Multi-Microgrid Assimilating Electric Vehicles." Fractal and Fractional 8, no. 3 (2024): 132. http://dx.doi.org/10.3390/fractalfract8030132.

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An important issue in interconnected microgrids (MGs) is the realization of balance between the generation side and the demand side. Imbalanced generation and load demands lead to security, power quality, and reliability issues. The load frequency control (LFC) is accountable for regulating MG frequency against generation/load disturbances. This paper proposed an optimized fractional order (FO) LFC scheme with cascaded outer and inner control loops. The proposed controller is based on a cascaded one plus tilt derivative (1+TD) in the outer loop and an FO tilt integrator-derivative with a filte

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Abdul Zahra, Atheel, and Turki Abdalla. "An ABC Optimized Adaptive Fuzzy Sliding Mode Control Strategy for Full Vehicle Active Suspension System." Iraqi Journal for Electrical and Electronic Engineering 17, no. 2 (2021): 151–65. http://dx.doi.org/10.37917/ijeee.17.2.17.

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This work presents a Fuzzy based adaptive Sliding Mode Control scheme to deal with the control problem of full vehicle active suspension system and take into consideration the nonlinearities of the spring and damper, unmodeled dynamics as well as external disturbances. The control law of fuzzy-based Adaptive Sliding Mode Control scheme will update the parameters of fuzzy sliding mode control by using the stability analysis of Lyapunov criteria such that the convergence infinite time and the stability of the closed-loop is ensured. The proposed control scheme consists of four similar subsystems

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Zhao, Feng, Mingming Dong, Yechen Qin, Liang Gu, and Jifu Guan. "Adaptive Neural-Sliding Mode Control of Active Suspension System for Camera Stabilization." Shock and Vibration 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/542364.

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The camera always suffers from image instability on the moving vehicle due to the unintentional vibrations caused by road roughness. This paper presents a novel adaptive neural network based on sliding mode control strategy to stabilize the image captured area of the camera. The purpose is to suppress vertical displacement of sprung mass with the application of active suspension system. Since the active suspension system has nonlinear and time varying characteristics, adaptive neural network (ANN) is proposed to make the controller robustness against systematic uncertainties, which release the

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Kahani, Rasool, Mohsin Jamil, and M. Tariq Iqbal. "Direct Model Reference Adaptive Control of a Boost Converter for Voltage Regulation in Microgrids." Energies 15, no. 14 (2022): 5080. http://dx.doi.org/10.3390/en15145080.

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In this study, we present a Direct Model Reference Adaptive Control (DMRAC) algorithm in a boost converter used in islanded microgrids (MG) with a solar photovoltaic (PV) system. Islanded types of microgrids have very sensitive voltage and frequency variability; therefore, a robust and adaptive controller is always desired to control such variations within the MG. A DC–DC boost converter with a modified MIT rule controller is proposed in this paper, which stabilizes output voltage variations in islanded MG. Since the boost converter is a non-minimum phase, the controller design that relies onl

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