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Journal articles on the topic 'Switching point control'

Author: Grafiati

Published: 16 November 2024

Last updated: 19 July 2025

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1

Jun, Eun-Su, and Sangshin Kwak. "A Highly Efficient Single-Phase Three-Level Neutral Point Clamped (NPC) Converter Based on Predictive Control with Reduced Number of Commutations." Energies 11, no. 12 (2018): 3524. http://dx.doi.org/10.3390/en11123524.

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This paper proposes a highly efficient single-phase three-level neutral point clamped (NPC) converter operated by a model predictive control (MPC) method with reduced commutations of switches. The proposed method only allows switching states with none or a single commutation at the next step as candidates for future switching states for the MPC method. Because the proposed method preselects switching states with reduced commutations when selecting an optimal state at a future step, the proposed method can reduce the number of switchings and the corresponding switching losses. Although the prop

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2

Branco, P. Daniel, Gregory Yablonsky, Guy B. Marin, and Denis Constales. "The switching point between kinetic and thermodynamic control." Computers & Chemical Engineering 125 (June 2019): 606–11. http://dx.doi.org/10.1016/j.compchemeng.2016.06.022.

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3

Rustamov, G. A., M. B. Namazov, A. Y. Gasimov, and R. G. Rustamov. "Control of Dynamic Objects in the Conditions of Uncertainty in the Point Sliding Mode." Mekhatronika, Avtomatizatsiya, Upravlenie 20, no. 12 (2019): 714–22. http://dx.doi.org/10.17587/mau.20.714-722.

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There is development of the well-known sliding mode, which in the classical formulation didn’t find the development to be applied to control systems discussed. Alternatively, there is method of organizing one of the uniformity of the sliding mode called the "point sliding mode" proposed. The distinctive feature of this mode is that here the control gaps occur at time-equal points of the switching line (hyperplane) which allows the origin of coordinates for a finite number of switches. The possibility of changing the time interval between these points makes it possible to obtain various modes:

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4

Fang, Ji Wen, Zhi Li Long, Lu Fan Zhang, Jian Dong Cai, and Long Sheng Nian. "Control Analysis of Point-to-Point Positioning Based on Macro-Micro Stage." Applied Mechanics and Materials 278-280 (January 2013): 1563–69. http://dx.doi.org/10.4028/www.scientific.net/amm.278-280.1563.

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Macro-micro stage can achieve large travel range and high precision positioning. The macro stage is driven by voice coil motor (VCM). The micro stage is actuated by the piezoelectric (PZT). The positioning theory of macro-micro stage is described. In this paper, the compensating method of point-to-point (PTP) positioning is divided into two types: compensation before steady state (CBS) and compensation after steady state (CAS). The different control strategies are applied to meet CAS and CBS. Because of the structure of macro-micro stage and the saturation of micro stage, switching control pla

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5

Karamanakos, Petros, Peter Stolze, Ralph M. Kennel, Stefanos Manias, and Hendrik du Toit Mouton. "Variable Switching Point Predictive Torque Control of Induction Machines." IEEE Journal of Emerging and Selected Topics in Power Electronics 2, no. 2 (2014): 285–95. http://dx.doi.org/10.1109/jestpe.2013.2296794.

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6

Wang, Lu Jun, Tao Gong, and Jun Zhu. "Robust Predictive Control for NPC Grid-Connected Inverters." Applied Mechanics and Materials 668-669 (October 2014): 522–25. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.522.

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In this paper, the state space model of neutral point clamped three-level grid-connected inverter is detailed derived and an Robust Predictive Control (RPC) method is proposed. In the proposed method, the total 27 switching vectors composed of a finite set from which the optimal switching vector is selected according to a cost function. The robust performance is improved just by increasing switching frequency. Experimental results show that the proposed method has a flexible control purposes and we can optimize the synthesize performance just by adjusting weighting coefficients of cost functio

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7

Zuraidi, Md Tahir, Jidin Auzani, and Luqman Mohd Jamil Mohd. "Multi-carrier switching strategy for high-bandwidth potential balancing control of multilevel inverters." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 4 (2021): 2384–92. https://doi.org/10.11591/ijpeds.v12.i4.pp2384-2392.

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This paper confers on investigation of a direct torque control (DTC) of induction motor drive by 3 level neutral point clamp (NPC) multilevel inverter. The imbalance problem may deteriorate the electric drive performances which might cause a short circuit condition. Various balancing control strategies were proposed, however, most of them employed complex space vector modulation (SVM) and hysteresis-based controller that generates variable switching frequencies. The proposed method will offer a reliable balancing control strategy with a constant switching frequency, and moreover, it will provi

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8

Ahmed, Mostafa, Ibrahim Harbi, Ralph Kennel, José Rodríguez, and Mohamed Abdelrahem. "Maximum Power Point Tracking-Based Model Predictive Control for Photovoltaic Systems: Investigation and New Perspective." Sensors 22, no. 8 (2022): 3069. http://dx.doi.org/10.3390/s22083069.

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In this paper, a comparative review for maximum power point tracking (MPPT) techniques based on model predictive control (MPC) is presented in the first part. Generally, the implementation methods of MPPT-based MPC can be categorized into the fixed switching technique and the variable switching one. On one side, the fixed switching method uses a digital observer for the photovoltaic (PV) model to predict the optimal control parameter (voltage or current). Later, this parameter is compared with the measured value, and a proportional–integral (PI) controller is employed to get the duty cycle com

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9

Matoglu, Melda Ormeci, John H. Vande Vate, and Haiyue Yu. "The economic average cost Brownian control problem." Advances in Applied Probability 51, no. 01 (2019): 300–337. http://dx.doi.org/10.1017/apr.2019.12.

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AbstractIn this paper we introduce and solve a generalization of the classic average cost Brownian control problem in which a system manager dynamically controls the drift rate of a diffusion process X. At each instant, the system manager chooses the drift rate from a pair {u, v} of available rates and can invoke instantaneous controls either to keep X from falling or to keep it from rising. The objective is to minimize the long-run average cost consisting of holding or delay costs, processing costs, costs for invoking instantaneous controls, and fixed costs for changing the drift rate. We pro

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10

Sone, Satoru, and Hitomi Irinatsu. "Precise control of switching time point of power semiconductor devices." IEEJ Transactions on Power and Energy 106, no. 3 (1986): 249–54. http://dx.doi.org/10.1541/ieejpes1972.106.249.

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11

Szular, Zbigniew, Bartosz Rozegnal, and Witold Mazgaj. "A New Soft-Switching Solution in Three-Level Neutral-Point-Clamped Voltage Source Inverters." Energies 14, no. 8 (2021): 2247. http://dx.doi.org/10.3390/en14082247.

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This paper presents a new soft-switching solution recommended for three-level neutral-point-clamped inverters. The operation principles of the proposed solution, working stages, selection of elements, and the control algorithm are comprehensively discussed herein. The control method of the inverter main switches is the same as that of the switches of an inverter operating according to the hard-switching technique. The correctness of the proposed solution was confirmed by the results of different tests using a laboratory neutral-point-clamped inverter with rated parameters of 3 kW, 2 × 150 V, 1

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12

Afkar, Mohammad, Roghayeh Gavagsaz-Ghoachani, Matheepot Phattanasak, Serge Pierfederici, and Wiset Saksiri. "Local-Stability Analysis of Cascaded Control for a Switching Power Converter." Journal of Robotics and Control (JRC) 5, no. 1 (2024): 160–72. http://dx.doi.org/10.18196/jrc.v5i1.20302.

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Switching power converters are integral in various applications like transportation and renewable energy. After their design, ensuring stable closed-loop poles is critical to maintain safe operating conditions. This study focuses on a switching DC-DC boost converter with a cascade control approach using an energy controller for the outer loop and indirect-sliding mode control for the inner loop. The research objective involves investigating stability through eigenvalue evaluation at different operating points. A large-signal average model is applied to make controlled performance independent o

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13

Liu, Haitao, Sen Wang, Liang Hu, Ling Feng, Yue Wang, and Chaoqun Xiang. "Junction Temperature Control of a Traction Inverter Based on Three-Level Active Neutral Point-Clamping." Energies 18, no. 9 (2025): 2241. https://doi.org/10.3390/en18092241.

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In this study, we propose an active junction temperature control method specifically tailored for traction inverters based on active neutral point-clamped (ANPC) three-level topology. This approach not only enables real-time junction temperature equalization across switching devices, but also minimizes switching losses while preserving synchronous modulation. The methodology begins with a detailed formulation of the loss quantification model for ANPC inverters, establishing the relationship between predicted losses and switching vectors. Building on this foundation, we develop a loss equalizat

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14

Ying, Zi. "Three-level ANPC rectifier loss calculation and balance control method." Journal of Physics: Conference Series 2561, no. 1 (2023): 012020. http://dx.doi.org/10.1088/1742-6596/2561/1/012020.

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Abstract Traditional three-level neutral-point clamped converter has the problem of the uneven loss distribution, which restricts the increase of converter capacity. Three-level active neutral-point clamped (3L-ANPC) converter can reduce the imbalance of power device loss distribution. At present, three traditional SPWM modulation strategies are used in single-phase three-level ANPC modulation. Considering the loss distribution, it is generally required to input the current and voltage sampling values in real-time and calculate the temperature of the switching device online for control or coll

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15

Mesquita da Silva, Julio Alves, Grace Silva Deaecto, and Tarcio Andre dos Santos Barros. "Analysis and Design Aspects of Min-Type Switching Control Strategies for Synchronous Buck–Boost Converter." Energies 15, no. 7 (2022): 2302. http://dx.doi.org/10.3390/en15072302.

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This paper presents a comparative study among switching control strategies for Buck–Boost converters, taking into account essential aspects in practical implementations, as the switching frequency variation concerning different output voltages and the responses in the transient and steady-states. More specifically, we have considered three switching strategies of min-type, where two of them permit high switching frequencies, while the other considers a limited frequency control strategy. Moreover, we have generalized the control techniques available in the literature to make them able to opera

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16

Shishkov, Alexander N., Maxim M. Dudkin, and Van Kan Le. "Influence of switching sequences on the neutral point voltage balance in a three-level voltage source invertor." Izvestiya MGTU MAMI 17, no. 2 (2023): 195–206. http://dx.doi.org/10.17816/2074-0530-125204.

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BACKGROUND:Ensuring the voltage balance of the neutral point of the DC link within acceptable limits is one of the mandatory requirements during the operation of a three-level autonomous neutral point clamped voltage source inverter. It is known that neutral point voltage imbalance can adversely affect the operation of the inverter and the load at all, lead to the failure of both power switches and capacitors in the DC link. Neutral point voltage imbalance mostly often occurs due to the asymmetry of the nominal values of DC capacitors, inconsistent properties of switching devices, asymmetric t

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17

Sahu, M. K., A. K. Panda, and B. P. Panigrahi. "Direct Torque Control for Three-Level Neutral Point Clamped Inverter-Fed Induction Motor Drive." Engineering, Technology & Applied Science Research 2, no. 2 (2012): 201–8. http://dx.doi.org/10.48084/etasr.117.

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Direct torque control (DTC) is a control technique in AC drive systems to obtain high performance torque control. The classical DTC drive contains a pair of hysteresis comparators and suffers from variable switching frequency and high torque ripple. These problems can be solved by using space vector depending on the reference torque and flux. In this paper the space vector modulation technique is applied to the three-level Neutral Point Clamped (NPC) inverter control in the proposed DTC-based induction motor drive system, resulting to a significant reduce of torque ripple. Three-level neutral

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18

Rao, Sura Srinivasa, and Choppavarapu Sai Babu. "Voltage Compensation Using Dvr with Modified Switching Band Control." International Journal of Engineering & Technology 7, no. 4.24 (2018): 53. http://dx.doi.org/10.14419/ijet.v7i4.24.21855.

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This paper presents mitigation of voltage related Power Quality (PQ) issues by using Dynamic Voltage Restorer (DVR). Three phase four wire DVR with modified switching band controller is proposed. A modified filter circuit band controller is proposed for reducing the switching losses, constant switching frequency maintenance and corresponding simulation studies are carried out. Variable hysteresis band (modified band) controller generates accurate injected voltages by using system parameters and low error value between reference injected voltages, actual injected voltages can be achieved, which

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19

Basim, Talib Kadhem, Sahib Harden Sumer, Yaseen Khudair Al-Atbee Osama, and Mahdi Abdulhassan Khalid. "Improve the energy efficiency of PV systems by installing a soft switching boost converter with MPPT control." International Journal of Power Electronics and Drive Systems 14, no. 02 (2023): 1055~1069. https://doi.org/10.11591/ijpeds.v14.i2.pp1055-1069.

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To improve the energy consumption rate of solar cells and reduce switching loss, a maximum power point tracking (MPPT) control approach is presented to manage the boost converter and achieve soft switching. A method for determining the optimal values of the soft switching boost converter design parameters has been proposed, by determining the ideal values for the inductor, capacitor, and duty cycle of the boost converter with soft switching, this method enables the key matching of the PV system with the DC/DC converter configuration. In addition to presenting an analysis of several MPPT method

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20

Kashiri, Navvab, Mohammad Ghasemi, and Morteza Dardel. "An iterative method for time optimal control of dynamic systems." Archives of Control Sciences 21, no. 1 (2011): 5–23. http://dx.doi.org/10.2478/v10170-010-0029-0.

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An iterative method for time optimal control of dynamic systemsAn iterative method for time optimal control of a general type of dynamic systems is proposed, subject to limited control inputs. This method uses the indirect solution of open-loop optimal control problem. The necessary conditions for optimality are derived from Pontryagin's minimum principle and the obtained equations lead to a nonlinear two point boundary value problem (TPBVP). Since there are many difficulties in finding the switching points and in solving the resulted TPBVP, a simple iterative method based on solving the minim

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21

Takahata, Akihiko, Kenko Uchida, and Utaro Taira. "Minimum Energy type of Air Conditioning Control by Switching Equilibrium Point of Control Variables." IEEJ Transactions on Electronics, Information and Systems 123, no. 9 (2003): 1597–604. http://dx.doi.org/10.1541/ieejeiss.123.1597.

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22

Beye, Mamadou Lamine, Thilini Wickramasinghe, Jean François Mogniotte, et al. "Active Gate Driver and Management of the Switching Speed of GaN Transistors during Turn-On and Turn-Off." Electronics 10, no. 2 (2021): 106. http://dx.doi.org/10.3390/electronics10020106.

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The paper investigates the management of drain voltage and current slew rates (i.e., dv/dt and di/dt) of high-speed GaN-based power switches during the transitions. An active gate voltage control (AGVC) is considered for improving the safe operation of a switching cell. In an application of open-loop AGVC, the switching speeds vary significantly with the operating point of the GaN HEMT on either or both current and temperature. A closed-loop AGVC is proposed to operate the switches at a constant speed over different operating points. In order to evaluate the reduction in the electromagnetic di

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23

Beye, Mamadou Lamine, Thilini Wickramasinghe, Jean François Mogniotte, et al. "Active Gate Driver and Management of the Switching Speed of GaN Transistors during Turn-On and Turn-Off." Electronics 10, no. 2 (2021): 106. http://dx.doi.org/10.3390/electronics10020106.

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The paper investigates the management of drain voltage and current slew rates (i.e., dv/dt and di/dt) of high-speed GaN-based power switches during the transitions. An active gate voltage control (AGVC) is considered for improving the safe operation of a switching cell. In an application of open-loop AGVC, the switching speeds vary significantly with the operating point of the GaN HEMT on either or both current and temperature. A closed-loop AGVC is proposed to operate the switches at a constant speed over different operating points. In order to evaluate the reduction in the electromagnetic di

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24

Kadhem, Basim Talib, Sumer Sahib Harden, Osama Yaseen Khudair Alatbee, and Khalid M. Abdulhassan. "Improve the energy efficiency of PV systems by installing a soft switching boost converter with MPPT control." International Journal of Power Electronics and Drive Systems (IJPEDS) 14, no. 2 (2023): 1055. http://dx.doi.org/10.11591/ijpeds.v14.i2.pp1055-1069.

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<span lang="EN-US">To improve the energy consumption rate of solar cells and reduce switching loss, a maximum power point tracking (MPPT) control approach is presented to manage the boost converter and achieve soft switching. A method for determining the optimal values of the soft switching boost converter design parameters has been proposed, by determining the ideal values for the inductor, capacitor, and duty cycle of the boost converter with soft switching, this method enables the key matching of the PV system with the DC/DC converter configuration. In addition to presenting an analys

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25

Tahir, Zuraidi Md, Auzani Jidin, and Mohd Luqman Mohd Jamil. "Multi-carrier switching strategy for high-bandwidth potential balancing control of multilevel inverters." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 4 (2021): 2384. http://dx.doi.org/10.11591/ijpeds.v12.i4.pp2384-2392.

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<span lang="EN-US">This paper confers on investigation of a direct torque control (DTC) of induction motor drive by 3 level neutral point clamp (NPC) multilevel inverter. The imbalance problem may deteriorate the electric drive performances which might cause a short circuit condition. Various balancing control strategies were proposed, however, most of them employed complex space vector modulation (SVM) and hysteresis-based controller that generates variable switching frequencies. The proposed method will offer a reliable balancing control strategy with a constant switching frequency, an

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26

Zulfin, Muhammad, S. Suherman, Rahmad Fauzi, M. Razali, and Maksum Pinem. "Cross-Point Comparison of Multistage Non-Blocking Technologies." International Journal of Engineering & Technology 7, no. 3.2 (2018): 703. http://dx.doi.org/10.14419/ijet.v7i3.2.15348.

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Multistage switching networks play important role in communication and computer network. They make communication nodes connect to each other. In computer hardware switches connect processors and memories. Initially, switches are arranged as one stage interconnection. As clients are growing, multistage is a must. The finding Clos multistage switching initiated multistage technologies. Benes improves Clos by reducing number of cross-points by using a 2 x 2 switch element and call re-routing. Batcher improves the technology by other way which is sorting destination address. Banyan is then joined

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27

Campos-Cantón, E. "Chaotic attractors based on unstable dissipative systems via third-order differential equation." International Journal of Modern Physics C 27, no. 01 (2016): 1650008. http://dx.doi.org/10.1142/s012918311650008x.

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In this paper, we present an approach how to yield 1D, 2D and 3D-grid multi-scroll chaotic systems in [Formula: see text] based on unstable dissipative systems via third-order differential equation. This class of systems is constructed by a switching control law(SCL) changing the equilibrium point of an unstable dissipative system. The switching control law that governs the position of the equilibrium point varies according to the number of scrolls displayed in the attractor.

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28

Domlan, Elom Ayih, José Ragot, and Didier Maquin. "Switching Systems: Active Mode Recognition, Identification of the Switching Law." Journal of Control Science and Engineering 2007 (2007): 1–11. http://dx.doi.org/10.1155/2007/50796.

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The problem of the estimation of the discrete state of a switching system is studied. The knowledge of the switching law is essential for this kind of system as it simplifies their manipulation for control purposes. This paper investigates the use of a model-based diagnosis method for the determination of the active mode at each time point based on the system input/output data. The issue of the parametric identification of the switching law is also addressed.

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29

Yang, Dong, Guangdeng Zong, and Jun Zhao. "H∞ fault-tolerant control for switched linear parameter-varying systems: A parameter and state-dependent switching method with dwell time." Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 233, no. 1 (2018): 18–30. http://dx.doi.org/10.1177/0959651818766220.

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This article discusses the issue of H∞ fault-tolerant control for switched linear parameter-varying systems with actuator failures using the multiple discretized parameter-dependent Lyapunov functions method. A key point of this work is to construct the multiple discretized parameter-dependent Lyapunov functions, which provide an effective tool for avoiding the Zeno behavior generated by the parameter and state-dependent switching approach. This is not a simple extension of traditional multiple Lyapunov functions because of the introduction of external parameter and dwell time. First, a switch

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30

Zhang, Guozheng, Yingjie Su, Zhanqing Zhou, and Qiang Geng. "A Carrier-Based Discontinuous PWM Strategy of NPC Three-Level Inverter for Common-Mode Voltage and Switching Loss Reduction." Electronics 10, no. 23 (2021): 3041. http://dx.doi.org/10.3390/electronics10233041.

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For the conventional carrier-based pulse width modulation (CBPWM) strategies of neutral point clamped (NPC) three-level inverters, the higher common-mode voltage (CMV) is a major drawback. However, with CMV suppression strategies, the switching loss is relatively high. In order to solve the above issue, a carrier-based discontinuous PWM (DPWM) strategy for NPC three-level inverter is proposed in this paper. Firstly, the reference voltage is modified by the twice injection of zero-sequence voltage. Switching states of the three-phase are clamped alternatively to reduce both the CMV and the swit

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31

Xin-xin, HU, and Chen Chun-lan. "MSHE-PWM Control of Modular Multilevel Direct Current Transmission System." Open Electrical & Electronic Engineering Journal 9, no. 1 (2015): 553–59. http://dx.doi.org/10.2174/1874129001509010553.

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In order to optimize the electric energy quality of HVDC access point, a modular multilevel selective harmonic elimination pulse-width modulation (MSHE-PWM) method is proposed. On the basis of keeping the minimum action frequency of the power device, MSHE-PWM method can meet the requirement for accurately eliminating low-order harmonics in the output PWM waveform. Firstly, establish the basic mathematical model of MMC topology and point out the voltage balance control principle of single modules; then, analyze offline gaining principle and realization way of MSHEPWM switching angle; finally, v

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32

Qu, Ying, Bin Zhang, Hairong Chu, Xiaoxia Yang, Honghai Shen, and Jingzhong Zhang. "Linear-Nonlinear Switching Active Disturbance Rejection Speed Controller for Permanent Magnet Synchronous Motors." Sensors 22, no. 24 (2022): 9611. http://dx.doi.org/10.3390/s22249611.

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To combine the advantages of linear active disturbance rejection control (LADRC) and nonlinear active disturbance rejection control (NLADRC) and improve the contradiction between the response speed and control precision caused by the limitation of parameter α in NLADRC, a linear-nonlinear switching active disturbance rejection control (SADRC) strategy based on linear-nonlinear switching extended state observer (SESO) and linear-nonlinear switching state error feedback control law (SSEF) is proposed in this paper. First, the reasons for the performance differences between LADRC and NLADRC are a

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33

Motoi, Naoki, Kenta Sasahara, and Atsuo Kawamura. "Switching Control Method for Stable Landing by Legged Robot Based on Zero Moment Point." Journal of Robotics and Mechatronics 25, no. 5 (2013): 831–39. http://dx.doi.org/10.20965/jrm.2013.p0831.

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This paper proposes a switching control method to achieve a smooth transition from an edge landing to a sole landing for a legged robot. When a biped robot walks, an undesirable condition at the moment of landing, such as hunting between the ground and the foot, may occur for several reasons. To avoid this condition, this paper focuses on a method that uses simple controllers to ensure a smooth transition from an edge landing to a sole landing. In the event of an edge landing, a force controller should be implemented for a smooth transition to a sole landing. This is because the force controll

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34

Sun, Changchun, and Qicheng Xu. "Generating Chaos from Two Three-Dimensional Rigorous Linear Systems via a Novel Switching Control Approach." International Journal of Bifurcation and Chaos 26, no. 13 (2016): 1650212. http://dx.doi.org/10.1142/s0218127416502126.

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By constructing two three-dimensional (3D) rigorous linear systems, a novel switching control approach for generating chaos from two linear systems is presented. Two 3D linear systems without any constant term have only one common equilibrium point that is the origin. By employing an absolute-value switching law, chaos can be generated by switching between two linear systems. Basic dynamical behaviors of the systems are investigated in detail. Numerical examples illustrate the effectiveness of the presented approach.

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Et. al., M. Sri Lakshmi. "An Adaptive Buffer tradeoff, energy-aware Congestion Control protocol in WSN." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 3 (2021): 4880–91. http://dx.doi.org/10.17762/turcomat.v12i3.1993.

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In a Wireless sensor network, network lifetime plays a vital role, wherein regular communication and sensor nodes are positioned at different points. Nodes energy depletion may lead to communication interruption due to unlimited data flow from one point to another; for adequate communication, Nodes energy should be maximized by arranging cutting-edge techniques such as adaptive buffer switching and congestion control significant role. When the incoming data is more wide-ranging than available resources, a congestion situation arises. It results in energy consumption, loss of packets, buffer ov

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Deryusheva, Valentina N., Petr Y. Krauinsch, Aleksandr V. Ioppa, Andrei S. Bazarov, and Artem V. Zhukov. "Model of Hydraulic Rotary Control Valve for Control of Pneumohydraulic Impact Unit." Key Engineering Materials 685 (February 2016): 365–69. http://dx.doi.org/10.4028/www.scientific.net/kem.685.365.

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The paper presents constructive scheme, the mathematical model and schematic diagram of the hydraulic rotary control valve of the pneumohydraulic impact unit. Detailed analysis of the mathematical model was made for the purpose to create modes of the movement conducive to improving the work of pneumohydraulic impact unit at the point of switching. The results of mathematical modeling (schematic diagram of matlab) are given.

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Shishkina, Irina. "Proportion calculation of the defect parts in track switching equipment." E3S Web of Conferences 402 (2023): 06012. http://dx.doi.org/10.1051/e3sconf/202340206012.

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This paper presents a direct calculation of the average value of defective elements of point products. Production process control is considered using the example of the control of point products. The calculation of the first four moments in a binomial distribution of the number of defective elements of point products is made. The standard error of the fraction of defective elements is considered in detail.

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Han, Yetong, Rui Wang, Yi Zhang, Dazhong Ma, Shaoxv Jiang, and Liangwu Wen. "An Adaptive Switching Control Strategy under Heavy–Light Load for the Bidirectional LLC Considering Parasitic Capacitance." Sustainability 14, no. 19 (2022): 11832. http://dx.doi.org/10.3390/su141911832.

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The LLC topology is widely used to link renewable energy and inverters to provide constant voltage in the smart grid. Due to its characteristics, the voltage regulation range under light load conditions is limited, so that the output voltage cannot be maintained constant. The adaptive switching control strategy is proposed in this paper to keep the output constant. Under heavy load conditions, the voltage is kept constant by adjusting the frequency to ensure the accuracy of the control. The phase shift is adjusted to achieve constant voltage, considering the influence of parasitic capacitance

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Sha, MaiChao, RuiJin Zhu, and XueJiao Gong. "Fixed frequency Finite Control Set Model Predictive Control For Three-level APF." E3S Web of Conferences 233 (2021): 04028. http://dx.doi.org/10.1051/e3sconf/202123304028.

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Active power filter can compensate harmonic and reactive power, Three level neutral point clamp (ANPC) has the characteristics of low output harmonic and low device loss. The control of three-level active power filter needs to consider multiple objectives. Finite control set model predictive control (FCS-MPC) is a new method which can add constraints and multi-objective control. According to the limit of the switch state, it can track the reference current, which has the characteristics of fast dynamic response and good compensation effect. This method not only keeps the neutral point voltage

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Zavalishchin, D. S. "Multi-agent transport system control problem." Herald of the Ural State University of Railway Transport, no. 2 (2024): 23–28. http://dx.doi.org/10.20291/2079-0392-2024-2-23-28.

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A new class of control problems for a certain transport system is considered. The peculiarity of the system is the variable number of participants in the control process. The regrouping of participants, along with their unification and dispersal, is determined by the specified target points of visit, the initial point of departure and the final point of completion of the system’s movement, and the constructed trajectories. The structure of a multi-agent transport system implies the presence of primary and secondary carriers, with the former being able to transport the latter at some stages. It

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Lin, Nan, Changfu Zong, and Shuming Shi. "Method for Switching between Traction and Brake Control for Speed Profile Optimization in Mountainous Situations." Energies 11, no. 11 (2018): 3042. http://dx.doi.org/10.3390/en11113042.

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Making full use of front road grade information to achieve the best fuel efficiency is important for intelligent vehicles. Normal theoretical studies pay too much attention to engine continuous feedback control. The theoretical foundation of switching between traction and brake control has been ignored. In mountainous terrain, both the engine and road slopes are energy sources. Switching between traction and brake control is the key point. This research focuses on broadening the normal control range. The comprehensive objective function that contains traction and brake control is built, and th

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Tatekura, Yosuke, and Takeshi Watanabe. "Sound reproduction system with switching control band range on every listening point." Journal of the Acoustical Society of America 120, no. 5 (2006): 3212. http://dx.doi.org/10.1121/1.4788134.

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Stolze, Peter, Petros Karamanakos, Ralph Kennel, Stefanos Manias, and Christian Endisch. "Effective variable switching point predictive current control for ac low-voltage drives." International Journal of Control 88, no. 7 (2014): 1366–78. http://dx.doi.org/10.1080/00207179.2014.942699.

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TREFFERS-DALLER, JEANINE. "The IC model and code-switching." Bilingualism: Language and Cognition 1, no. 2 (1998): 98–99. http://dx.doi.org/10.1017/s1366728998000212.

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In his contribution Green proposes a very interesting model of bilingual speech processing, the inhibitory control (IC) model. The model's aim is to account for the way in which bilinguals control their two language systems. Although the model was not developed to account for code-switching, the author explicitly goes into implications of his model for code-switching and this makes it very relevant for linguists working in that field. Until now, psycholinguistic aspects of code-switching have received far less attention in the literature than the syntactic aspects of code-switching. The model

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Koronkiewicz, Bryan. "Control Stimuli in Experimental Code-Switching Research." Languages 4, no. 3 (2019): 67. http://dx.doi.org/10.3390/languages4030067.

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The current study investigates whether there is variation among different types of control stimuli in code-switching (CS) research, how such stimuli can be used to accommodate heterogeneity, and how they can also be used as a baseline comparison of acceptability. A group of native Spanish–English bilinguals (n = 20) completed a written acceptability judgment task with a 7-point Likert scale. Five different types of control stimuli were included, with three types considered to be completely acceptable (complex-sentence switches, direct-object switches, and subject–predicate switches) and two ty

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Oh, Soo Kwang, Seoyeon Hong, and Hee Sun Park. "The Tipping Point." International Journal of Social Media and Online Communities 12, no. 1 (2020): 23–39. http://dx.doi.org/10.4018/ijsmoc.2020010103.

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While previous researchers have addressed motivations to join and continue using social media, this paper focuses on why users quit certain social media and change their favorite platforms, such as the current shift from Facebook to Twitter to Instagram and Snapchat. Furthermore, this exploratory study seeks to build an understanding of social media usage and motivations for switching from a cross-cultural perspective by comparing findings from Korean and U.S. users. Findings from 19 focus group sessions (n = 118) highlight influences regarding modes of usage, user control, commitment, addicti

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Hoyos, Fredy E., John E. Candelo-Becerra, and Carlos I. Hoyos Velasco. "Application of Zero Average Dynamics and Fixed Point Induction Control Techniques to Control the Speed of a DC Motor with a Buck Converter." Applied Sciences 10, no. 5 (2020): 1807. http://dx.doi.org/10.3390/app10051807.

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Several technological applications require well-designed control systems to induce a desired speed in direct current (DC) motors. Some controllers present saturation in the duty cycle, which generates variable switching frequency and subharmonics. The zero average dynamics and fixed point induction control (ZAD-FPIC) techniques have been shown to reduce these problems; however, little research has been done for DC motors, considering fixed switching frequency, quantization effects, and delays. Therefore, this paper presents the speed control of a DC motor by using a buck converter controlled w

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Yue, Yun Tao, and Zhi Yong Xu. "Research on Neutral-Point Balancing for Three-Level Space Voltage Vector Converter." Advanced Materials Research 748 (August 2013): 473–76. http://dx.doi.org/10.4028/www.scientific.net/amr.748.473.

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A novel hybrid clamped dual-PWM three-level converter topology is proposed for induction motor drives in this paper. The switching states of hybrid clamp three-level converters increase to sixty-four from twenty-seven switching states of diode clamp three-level converters. In order to realize optimization of its redundant voltage space vectors by detecting voltage of clamp capacitor and difference of capacitor voltage in DC side, Generating an optimized switching pattern, The hybrid clamped three-level converter increases the voltage levels number, reducing the harmonics associated to the comm

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Ningappa, Sridhara Somaguddu, Siddesh Kondapur Basavarajan, Sudharashan Mungasavalli Katappa, Sandeep Velur Ramareddy, Lavakumar Tavane Basavarajappa, and Tole Sutikno. "Sliding mode control technique of step down converter using reaching law." International Journal of Applied Power Engineering (IJAPE) 12, no. 1 (2023): 102. http://dx.doi.org/10.11591/ijape.v12.i1.pp102-108.

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<p>The robust reaching law based sliding mode control is used for chattering suppression, minimization of steady state error and reaching speed kept minimized. With fine tuning of parameters of robust reaching law, the sliding mode reaches the equilibrium point at the earliest. The stability of the proposed reaching law is analyzed. In one hand, they guarantee the system reach the sliding face rapidly and stay on it, in another way they decline the chattering effectively, even unmatched certainties and disturbances. Such that the system response can better realize the unification of rapi

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Sridhara, Somaguddu Ningappa, Kondapur Basavarajan Siddesh, Mungasavalli Katappa Sudharashan, Velur Ramareddy Sandeep, Tavane Basavarajappa Lavakumar, and Sutikno Tole. "Sliding mode control technique of step down converter using reaching law." International Journal of Applied Power Engineering 12, no. 01 (2023): 102~108. https://doi.org/10.11591/ijape.v12.i1.pp102-108.

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The robust reaching law based sliding mode control is used for chattering suppression, minimization of steady state error and reaching speed kept minimized. With fine tuning of parameters of robust reaching law, the sliding mode reaches the equilibrium point at the earliest. The stability of the proposed reaching law is analyzed. In one hand, they guarantee the system reach the sliding face rapidly and stay on it, in another way they decline the chattering effectively, even unmatched certainties and disturbances. Such that the system response can better realize the unification of rapidity. A p

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