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Journal articles on the topic 'Traditional control mode'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Pan, Shenghu, and Haitao Liu. "Synchronous Control of Two Motors Based on Improved Sliding Mode Control." Academic Journal of Science and Technology 14, no. 1 (2025): 236–42. https://doi.org/10.54097/x3fw4d46.

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With the technological development of the society, permanent magnet synchronous motors are used more and more widely, especially in the two-motor synchronous system. Aiming at the problems of response performance and anti-interference ability of the dual motor synchronous system, this paper proposes an improved sliding mode speed control controller. First, its mathematical model is established by analyzing the mechanical principle and working principle of the permanent magnet synchronous motor. On the basis of the traditional sliding mode controller, the sliding mode surface and convergence ra

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2

Bian, Fengshuo, and Ying-Ren Chien. "PMSM Speed Control Based on Improved Adaptive Fractional-Order Sliding Mode Control." Symmetry 17, no. 5 (2025): 736. https://doi.org/10.3390/sym17050736.

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Addressing the problem of poor robustness and anti-interference ability in the permanent magnet synchronous motor (PMSM) speed control system, an adaptive fractional-order sliding mode controller based on a fractional-order sliding mode disturbance observer is proposed. Firstly, a mathematical model of a PMSM is established, which combines adaptive control with fractional order sliding mode control to effectively reduce the drawbacks of traditional integer order sliding mode control and improve the control accuracy of the system. At the same time, a new sliding mode approach law is used to rep

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Cheng, Xufeng, Chenyang Liu, Yuliang Zhang, and Dianlong Wang. "Analysis and Comparison of Sliding Mode Controller for the Boost Driver in LED Headlamps." Journal of Physics: Conference Series 2356, no. 1 (2022): 012009. http://dx.doi.org/10.1088/1742-6596/2356/1/012009.

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In this paper, the performance of several sliding mode control strategies used for the boost driver in LED headlamps is analysed and compared. At first the topology, control framework, and mathematical model of the boost LED driver is presented. Based on the mathematical model, a traditional differential sliding mode control law, a terminal sliding mode control law with finite convergence time, and a 2nd-order sliding mode control law with the Super-Twisting algorithm are derived and designed. Finally the simulation models of these sliding mode control laws are built. Simulation results show t

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Amit Kumar and Prof. (Dr.) Sivanand Singh. "Studying Pest Control through Traditional Methods." International Journal of Scientific Research in Science and Technology 12, no. 1 (2025): 762–65. https://doi.org/10.32628/ijsrst25121225.

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Traditional pest control methods, often rooted in indigenous knowledge passed down through generations, offer sustainable and environmentally-friendly approaches to agricultural and household pest management. These methods are often low-cost, using locally available resources, minimizing reliance on synthetic chemicals, and promoting biodiversity. However, challenges related to standardization, scalability, and integration with modern practices exist. This research paper explores traditional pest control techniques, categorizes them based on their mode of action, and analyzes their potential f

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Bylappa,, Umesh Kumar, Abdulgafoor M. Tharayil, Nissar Shaikh, Sujith M. Prabhakaran, Stefan Rohrig, and Faisal Malmstrom. "Adaptive Support Ventilation – A way different from traditional ventilation." Indian Journal of Respiratory Care 05, no. 02 (2022): 713–20. http://dx.doi.org/10.5005/jp-journals-11010-05203.

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Adaptive support ventilation (ASV) is a dual control mode of ventilation, which uses a closed loop control technique. This mode delivers controlled, time triggered and time cycled breaths when a patient is not breathing. If the patient has spontaneous breaths, it delivers flow cycled breaths and allows the patient to trigger and breathe spontaneously, either in between the controlled breaths or fully spontaneously. This mode is pressure limited for control, assist control and spontaneous breath. The pressure will vary depending on the target tidal volume and uses autoflow throughout the cycle.

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Lan, Ruoxin. "Sliding Mode Control and Its Applications in Robot Trajectory Tracking Control: Review." Applied and Computational Engineering 111, no. 1 (2024): 152–58. http://dx.doi.org/10.54254/2755-2721/111/2024ch0100.

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Sliding Mode Control (SMC), renowned for its robustness and anti-interference capabilities, is extensively applied in the realm of robot trajectory tracking. This paper reviews the application of SMC in robot trajectory tracking, and compares the performance differences between traditional SMC and improved SMC (including integral sliding mode control ISMC and adaptive neural network sliding mode control ANNSMC). Although traditional SMC is widely used in robot trajectory tracking due to its strong robustness, its high-frequency jitter problem cannot be ignored. In contrast, ISMC effectively re

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Srun, Channareth, Saran Meas, Sok Oeun Un, Saokun Khim, and Virbora Ny. "Prototype Self-Adaptive Traffic Light Control System Using Cameras." EPI International Journal of Engineering 4, no. 2 (2021): 127–33. http://dx.doi.org/10.25042/10.25042/epi-ije.082021.04.

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Cambodia is a developing country with rapid development. More vehicle usage on the road increased, this leads to more traffic problems. The traditional traffic light and traffic police officer help solve the problem at a level and limited conditions. For a better improvement, the smart traffic light is a good solution that can adapt to the real-world environment. There are four cameras are used to capture and analyze the vehicle traffic to control the modes of the traffic light. This method gives the improvement over the limited time of the traditional traffic light. This smart traffic light c

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Wang, Yaobin, Tao Zhang, and Pengpeng Hou. "Research on Super-Twisting Sliding Mode Voltage Regulation Control of Electric Spring." International Journal of Mechanical and Electrical Engineering 2, no. 1 (2024): 60–71. http://dx.doi.org/10.62051/ijmee.v2n1.08.

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The traditional control of electric spring (ES) is too complex and lack of robustness, as well as the chattering phenomenon and control accuracy of traditional sliding mode control, a second-order terminal sliding mode control based on super twisting algorithm is proposed. In this paper, the phase plane method is used to establish the mathematical model of ES, solve the state space equation, and regard the AC power supply as a simplified error analysis. Then a second-order sliding mode controller is proposed. The controller parameters are solved to obtain the second-order sliding mode control

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9

WATANABE, KENICHI, YOUSUKE SUGIYAMA, TOMOYA ENOKIDO, and MAKOTO TAKIZAWA. "MODERATE CONCURRENCY CONTROL IN DISTRIBUTED OBJECT SYSTEMS." Journal of Interconnection Networks 05, no. 02 (2004): 181–91. http://dx.doi.org/10.1142/s021926590400109x.

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Objects are concurrently manipulated only through methods issued by multiple transactions in object-based systems. We first extend traditional read and write lock modes to methods on objects. We newly introduce availability and exclusion types of conflicting relations among methods. Then, we define a partially ordered relation on lock modes showing which modes are stronger than others. We newly propose a moderate concurrency control algorithm. Before manipulating an object through a method, the object is locked in a weaker mode than an intrinsic mode of the method. Then, the lock mode is escal

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10

Song, Zihong, Youzhuo Zheng, Yekui Yang, Xuexue Wang, and Dao Guo. "Control strategy of distributed flexible distribution network based on hierarchical optimal control." Journal of Physics: Conference Series 2849, no. 1 (2024): 012103. http://dx.doi.org/10.1088/1742-6596/2849/1/012103.

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Abstract In traditional hierarchical control strategies, droop control is employed to simulate the behavior of power system generators, modifying the distributed generation (DG) output in relation to frequency and voltage adjustments. However, this control strategy has a single control mode, with all DG operating at the same voltage level, which cannot achieve the economic mode of prioritizing renewable energy supply. Moreover, the adoption of traditional droop control leads to poor current sharing and is not conducive to system stability. This invention introduces a hierarchical optimization

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11

Pei, Pei, Zhongcai Pei, Zhiyong Tang, and Han Gu. "Position Tracking Control of PMSM Based on Fuzzy PID-Variable Structure Adaptive Control." Mathematical Problems in Engineering 2018 (September 30, 2018): 1–15. http://dx.doi.org/10.1155/2018/5794067.

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A novel Fuzzy PID-Variable Structure Adaptive Control is proposed for position tracking of Permanent Magnet Synchronous Motor which will be used in electric extremity exoskeleton robot. This novel control method introduces sliding mode variable structure control on the basis of traditional PID control. The variable structure term is designed according to the sliding mode surface which is designed by system state equation, so it could compensate for the disturbance and uncertainty. Considering the chattering of sliding mode system, the fuzzy inference method is adopted to adjust the parameters

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Hawkins, Nicholas, Bhagyashri Bhagwat, and Michael L. McIntyre. "Nonlinear Current-Mode Control of SCIG Wind Turbines." Energies 14, no. 1 (2020): 55. http://dx.doi.org/10.3390/en14010055.

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In this paper, a nonlinear controller is proposed to manage the rotational speed of a full-variable Squirrel Cage Induction Generator wind turbine. This control scheme improves upon tractional vector controllers by removing the need for a rotor flux observer. Additionally, the proposed controller manages the performance through turbulent wind conditions by accounting for unmeasurable wind torque dynamics. This model-based approach utilizes a current-based control in place of traditional voltage-mode control and is validated using a Lyapunov-based stability analysis. The proposed scheme is comp

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13

Wang, Dongwen, Dongheng Wang, Wei Zhou, and Libo Niu. "Research on PMSM Sliding-mode Vector Combined Speed Controller Based on Improved Exponential Reaching Law." Journal of Physics: Conference Series 2260, no. 1 (2022): 012024. http://dx.doi.org/10.1088/1742-6596/2260/1/012024.

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Abstract Sliding mode control has good robustness, but the traditional sliding mode has the problem of chattering. Aiming at the conflict between velocity and chattering in the approach stage of sliding mode control, a new reaching law is put forward. By improving the isokinetic approach term of the traditional exponential reaching law, the system’s requirements in different stages of sliding mode motion are met, and this contradiction has been effectively improved. At the same time, to better improve the control effect of permanent magnet synchronous motor (PMSM) speed regulation system, comb

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14

Zhu, Boming, Dehong Zhu, and Tao Tao. "Model-Free Adaptive Fuzzy Sliding-Mode Observer Control for PMSM." Energies 18, no. 8 (2025): 1877. https://doi.org/10.3390/en18081877.

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To further improve the estimation accuracy of the super-spiral observer, this paper innovatively proposes a fuzzy model-free adaptive control (FMFAC) super-spiral observer. The control scheme exhibits improved estimation accuracy after incorporating a fuzzy model-free adaptive component. The main contributions of this paper are as follows: (1) to achieve comprehensive fuzzy parameters without model adaptation, and (2) to creatively summarize the fuzzy rule table according to the observer’s characteristics. Experimental results demonstrate that the control performance of the proposed observer s

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15

Sun, Hua, Yue Hong Dai, and Chuan Sheng Tang. "Sliding-Mode Position Control of PMSLM Based on Grey Forecasting Model." Applied Mechanics and Materials 687-691 (November 2014): 85–88. http://dx.doi.org/10.4028/www.scientific.net/amm.687-691.85.

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This paper presented a new method of sliding mode control for position control problem in view of the uncertainty of friction model of permanent magnet synchronous linear motor (PMSLM). This is an estimation compensation control scheme for non-homogeneous sequence data.The stability of the proposed control law was verified according to Lyapunov stable theory.Comparison with traditional control was given through Matlab simulations, which proved the feasibility and efficiency of the proposed control method for PMSLM drive system.

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16

Ma, Rui, Shu Ju Hu, Xun Bo Fu, Hong Hua Xu, and Nian Hong Li. "Torque Control and Pitch Control Strategy in VSCF Wind Turbine above Rated Wind Speed." Advanced Materials Research 463-464 (February 2012): 1715–20. http://dx.doi.org/10.4028/www.scientific.net/amr.463-464.1715.

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Above rated wind speed, the wind turbine speed and output power are maintained near the rated values through the coordinative control of torque and pitch angle. Due to the non-linear behavior of the wind turbine, the traditional PID control is not effective in the pitch control. And accurate mathematical model of wind turbine is very difficult to get. In order to solve the problem, the fuzzy adaptive tuning PID control algorithm is proposed in the paper. About torque control strategy, constant torque control mode and constant power control mode are simulated respectively. Based on the analysis

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17

Fu, Mingyu, and Duansong Wang. "The Bioinspired Model-Based Hybrid Sliding-Mode Formation Control for Underactuated Unmanned Surface Vehicles." Journal of Control Science and Engineering 2018 (December 2, 2018): 1–9. http://dx.doi.org/10.1155/2018/7563178.

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In this paper, a novel hybrid strategy is proposed for unmanned surface vehicle (USV) formation control. The strategy is divided into two subsystems: a virtual velocity controller based on the bioinspired model and a dynamic controller based on the sliding-mode model. The proposed control scheme solves the problem of a speed jump that occurs in the traditional backstepping method when the margin of error increases suddenly, and it also satisfies the actuator control constraint. Additionally, a dynamic controller is designed, combining the sliding mode with the proposed virtual controller, to a

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18

Guo, Yufei, Leru Luo, and Changchun Bao. "Design of a Fixed-Wing UAV Controller Combined Fuzzy Adaptive Method and Sliding Mode Control." Mathematical Problems in Engineering 2022 (January 31, 2022): 1–22. http://dx.doi.org/10.1155/2022/2812671.

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To overcome the complexity of the coupled nonlinear model of a fixed-wing UAV system and the uncertainty caused by a large number of interference factors, a control algorithm combining fuzzy adaptive control and sliding mode variable structure control was proposed. The controller algorithm mainly relies on the sliding mode variable structure control method to solve the control problem of the strongly coupled complex nonlinear system. Based on sliding mode control, a fuzzy adaptive method is introduced to reduce the chattering problem of the traditional sliding mode control, and the uncertain p

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19

Yi, Long Long, Fu Chun Zhang, Yan Zhong Hao, and Xin Xin Chen. "Permanent Magnet Synchronous Motor Control Research Based on Improved Sliding Mode Algorithm." Applied Mechanics and Materials 401-403 (September 2013): 1581–85. http://dx.doi.org/10.4028/www.scientific.net/amm.401-403.1581.

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A speed controller with fuzzy sliding mode algorithm was designed by using power function instead of the traditional switch symbol function, and adjusting the approach law parameters combined with fuzzy algorithm in real time, as it was difficult to eliminate the chattering when designing a PMSM speed controller with the traditional sliding mode variable structure. The mathematical model of the PMSM was built in Matlab/Simulink with the vector control strategy. The simulation results showed that the control system of PMSM built by improved sliding mode had quick velocity response with less ove

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20

Han, Hong Pei, Wu Wang, and Zheng Min Bai. "Global Robust Terminal Sliding Mode Control for PMLSM Servo System." Applied Mechanics and Materials 273 (January 2013): 280–85. http://dx.doi.org/10.4028/www.scientific.net/amm.273.280.

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Permanent Magnet Linear Synchronous Motor (P MLSM was hard to control with traditional control strategy for parameters variation and external load disturbance, a global robust terminal sliding mode control (GRTSMC) was designed for PMLSM servo system, the sliding mode surface function was designed, the robust sliding mode control law was deduced and the stability was proved by Lyapunov theory. With the mathematical models of PMLSM, the simulation was taken with traditional PID control, SMC control and GRTSMC control proposed in this paper, the robust performance be found with GRTSMC control wh

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21

Zhang, Dan-xu, Yang-wang Fang, Peng-fei Yang, You-li Wu, and Tong-xin Liu. "A New Control Method for Second-Order Multiple Models Control System Based on Global Sliding Mode." Mathematical Problems in Engineering 2018 (July 30, 2018): 1–8. http://dx.doi.org/10.1155/2018/5709162.

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This paper proposed a finite time convergence global sliding mode control scheme for the second-order multiple models control system. Firstly, the global sliding surface without reaching law for a single model control system is designed and the tracking error finite time convergence and global stability are proved. Secondly, we generalize the above scheme to the second-order multimodel control system and obtain the global sliding mode control law. Then, the convergent and stable performances of the closed-loop control system with multimodel controllers are proved. Finally, a simulation example

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22

Wu, Jiajie, Zebin Yang, Xiaodong Sun, and Ding Wang. "Model predictive direct suspension force control of a bearingless induction motor based on sliding mode observer." Engineering Computations 39, no. 2 (2021): 457–76. http://dx.doi.org/10.1108/ec-09-2020-0540.

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PurposeThe purpose of the control method proposed in this paper is to address the problem of the poor anti-interference of the suspension winding current in the traditional bearingless induction motor (BL-IM) direct suspension force control process.Design/methodology/approachA model predictive direct suspension force control of a BL-IM based on sliding mode observer is proposed in this paper. The model predictive control (MPC) is introduced to the traditional direct suspension force control to improve the anti-interference of the suspension current. A sliding mode flux linkage observer is desi

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Ma, Baosen, Wenhui Pei, and Qi Zhang. "Trajectory Tracking Control of Autonomous Vehicles Based on an Improved Sliding Mode Control Scheme." Electronics 12, no. 12 (2023): 2748. http://dx.doi.org/10.3390/electronics12122748.

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This paper addresses the issue of external unknown environmental interference affecting the trajectory tracking performance and driving stability of autonomous vehicles. This seriously impacts the performance and stability of the vehicle while driving. In order to provide precise, reliable, and safe trajectory tracking performance for autonomous vehicles, this paper proposes a recursive integral terminal sliding mode control (RITSMC) method. The proposed RITSMC combines the advantages of recursive integral sliding mode (RISM), terminal sliding mode (TSM), and adaptive algorithms, and can effec

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Cho, Moon Gyeang, Useok Jung, Jun-Young An, Yoo-Seung Choi, and Chang-Joo Kim. "Adaptive Trajectory Tracking Control for Rotorcraft Using Incremental Backstepping Sliding Mode Control Strategy." International Journal of Aerospace Engineering 2021 (July 14, 2021): 1–15. http://dx.doi.org/10.1155/2021/4945642.

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This paper investigates the adaptive incremental backstepping sliding mode control for the rotorcraft trajectory-tracking control problem to enhance the robustness to the matched uncertainty in the model. First, the incremental dynamics is used for the control design to exclude the adverse effect of the mismatched model uncertainties on the trajectory-tracking performance. Secondly, the sliding-mode control strategy is adopted in the second design stage of the backstepping controller, and the effect of switching gains on the controller robustness is thoroughly studied using the rotorcraft mode

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Ma, Qiang, and Yu Qiang Jin. "Supersonic Missile Control with PI Sliding Mode Method." Advanced Materials Research 295-297 (July 2011): 1773–76. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.1773.

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Comparing with traditional adaptive methods, a very simple PI sliding mode controller is designed for uncertain nonlinear missile systems with the help of two main assumptions which are also testified to be reasonable.The construction of PI control for sliding surface is novel and effective. Also, the proof of PI type control law is unique in this paper.

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Wang, Weiyang, Yongqing Liu, Huipeng Chen, Jian Gao, Shaopeng Zhu, and Rougang Zhou. "Improved Rotor Flux-Based SMO and RBF-PID Control Strategy for PMSM." Actuators 12, no. 8 (2023): 327. http://dx.doi.org/10.3390/act12080327.

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This paper proposes a control strategy that combines an improved flux-based sliding mode observer with a Radial Basis Function Proportional-Integral-Derivative (RBF-PID) controller for the control of Permanent Magnet Synchronous Motors (PMSM). The strategy aims to address the issues of electrical angle estimation errors and torque fluctuations in traditional sliding mode observer control. The improved sliding mode observer utilizes the flux model of the PMSM to enhance the accuracy of electrical angle estimation, thereby reducing the estimation errors and improving the control of the current l

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Tan, Kuo, Hai Wu, Guo Hu, and Qi Huang. "Technology and application of operation control of DC distribution network." E3S Web of Conferences 252 (2021): 01019. http://dx.doi.org/10.1051/e3sconf/202125201019.

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DC distribution network consists of distributed generation, energy storage, load and AC distribution network, With the rapid development of DC distribution network and the increasing proportion of DC load, the operation mode of DC distribution network is more flexible. Different from the traditional AC distribution network, the traditional AC distribution network has a single operation mode, while the DC distribution network can operate in both parallel mode and island mode. Therefore, a control method suitable for different operation modes of DC distribution network is urgently needed. In thi

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Zhang, Yan, Ya-Jun Wang, and Jia-Qi Yu. "A Novel MPPT Algorithm for Photovoltaic Systems Based on Improved Sliding Mode Control." Electronics 11, no. 15 (2022): 2421. http://dx.doi.org/10.3390/electronics11152421.

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Due to the poor tracking performance and significant chattering of traditional sliding mode control in the maximum power point tracking (MPPT) algorithm, a novel MPPT algorithm based on sliding mode control for photovoltaic systems is proposed in this paper. The sliding mode control structure and new sliding mode surface of the multi-power reaching law are designed with the boost converter as the carrier of the photovoltaic system, and the sigmoid function is proposed to replace the symbolic function and saturation function in the power reaching law to improve the reaching rate and control qua

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Lin, Chih-Jer, Chii-Ruey Lin, Shen-Kai Yu, and Chin-Ren Hsu. "Enhanced Sliding Mode Control with CEMF Compensation for Tracking Control of a Piezoactuated Flexure-Based Mechanism." Advances in Mechanical Engineering 6 (January 1, 2014): 769192. http://dx.doi.org/10.1155/2014/769192.

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This paper proposes an enhanced sliding mode controller (SMC) for piezoelectric actuator based flexural mechanism (PABFM) to track desired motion trajectories. First, based on the variable structural control approach, the proposed controller is established to accommodate parameter uncertainties, nonlinearity, and unmodelled disturbances. Because the traditional sliding-mode control cannot deal with mismatched disturbances effectively, a hysteresis counterelectromotive force (CEMF) model is proposed to describe nonlinear hysteresis effect and electric-mechanical coupling of PABFM. as Similar to

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Zhou, Chen, Xinhui Liu, Wei Chen, Feixiang Xu, and Bingwei Cao. "Optimal Sliding Mode Control for an Active Suspension System Based on a Genetic Algorithm." Algorithms 11, no. 12 (2018): 205. http://dx.doi.org/10.3390/a11120205.

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In order to improve the dynamic quality of traditional sliding mode control for an active suspension system, an optimal sliding mode control (OSMC) based on a genetic algorithm (GA) is proposed. First, the overall structure and control principle of the active suspension system are introduced. Second, the mathematical model of the quarter car active suspension system is established. Third, a sliding mode control (SMC) controller is designed to manipulate the active force to control the active suspension system. Fourth, GA is applied to optimize the weight coefficients of an SMC switching functi

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Zou, Quan. "Adaptive sliding mode control for chain driving system with disturbance observer." Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 234, no. 9 (2020): 1050–59. http://dx.doi.org/10.1177/0959651819895693.

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The design and implementation of adaptive sliding mode control with disturbance observer for chain driving system driven by permanent magnet synchronous motor with parameter variation, meshing impact and large friction are addressed in this study. First, an adaptive model compensation control law is designed for perfect position tracking, while a nonlinear disturbance observer is investigated to estimate the normalized disturbance, which is fast changing due to the severe polygon effect, the meshing impact and so on. To further improve the robustness and the control performance, the translatio

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Huo, Ju, and Jia Shan Cui. "Design of Spacecraft Controller Based on Adaptive Fuzzy Sliding Mode Variable Structure." Applied Mechanics and Materials 380-384 (August 2013): 278–81. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.278.

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Using of feedback linearization technique to solve the problem of traditional sliding mode control chattering. The fuzzy adaptive control and sliding mode variable structure was designed by combining a novel adaptive fuzzy sliding mode variable structure controller. Through fuzzy inference and the stability analysis based on Lyapunov function to obtain fuzzy control rules adaptive law and effective solution to the traditional sliding mode control of the need to determine the parameter perturbation and external interference supremum uncertainty. Simulation results show that this method has bett

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Luo, Junhai, and Heng Liu. "Adaptive Fractional Fuzzy Sliding Mode Control for Multivariable Nonlinear Systems." Discrete Dynamics in Nature and Society 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/541918.

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This paper presents a robust adaptive fuzzy sliding mode control method for a class of uncertain nonlinear systems. The fractional order calculus is employed in the parameter updating stage. The underlying stability analysis as well as parameter update law design is carried out by Lyapunov based technique. In the simulation, two examples including a comparison with the traditional integer order counterpart are given to show the effectiveness of the proposed method. The main contribution of this paper consists in the control performance is better for the fractional order updating law than that

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Vázquez, Nimrod, Yuz Azaf, Ilse Cervantes, Eslí Vázquez, and Claudia Hernández. "Maximum Power Point Tracking Based on Sliding Mode Control." International Journal of Photoenergy 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/380684.

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Solar panels, which have become a good choice, are used to generate and supply electricity in commercial and residential applications. This generated power starts with the solar cells, which have a complex relationship between solar irradiation, temperature, and output power. For this reason a tracking of the maximum power point is required. Traditionally, this has been made by considering just current and voltage conditions at the photovoltaic panel; however, temperature also influences the process. In this paper the voltage, current, and temperature in the PV system are considered to be a pa

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Zeng, Hao, Rui Bo Yuan, Zu Shun He, and Peng Yi. "Speed Servo Control of Pneumatic Manipulator Based on Sliding Mode Variable Structure Control." Applied Mechanics and Materials 233 (November 2012): 158–62. http://dx.doi.org/10.4028/www.scientific.net/amm.233.158.

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For a series of non-linear factors of compression, friction, air pressure and load changing in the pneumatic system, it impact seriously on low-speed precision and stability of the pneumatic servo system. As the sliding mode variable structure has a good anti-interference ability and capacity of the model parameter perturbation, In this paper we use the above control strategy to solve the unmodeled part of the pneumatic system dynamics and bounded disturbances, so it can improve accuracy and stability of the aerodynamic servo system. The simulation results indicate that the system combined wit

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Li, Junmin, Junchang Wang, Jianhao Liu, and Chongyang Ren. "Coordinated Control Strategy for Drive Mode Switching of Double Rotor In-Wheel Motor Based on MPC and Control Allocation." World Electric Vehicle Journal 14, no. 5 (2023): 132. http://dx.doi.org/10.3390/wevj14050132.

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To overcome the problems existing in the practical application of traditional in-wheel motors used for electric vehicles, an integrated double rotor in-wheel motor was proposed, which can realize three drive modes to meet variable operating condition requirements of the vehicle. The process of switching between different drive modes affects the ride comfort of a vehicle. Taking the mode switching from a single inner motor drive to a dual-motor coupling drive as a research object, a dynamic modeling method of drive mode switching based on the switching system was proposed. According to the crit

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Ekanayake, Uthpala N., and Uditha S. Navaratne. "A Survey on Microgrid Control Techniques in Islanded Mode." Journal of Electrical and Computer Engineering 2020 (October 15, 2020): 1–8. http://dx.doi.org/10.1155/2020/6275460.

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Traditional power networks with generation in upstream and consumption in the downstream were controlled with centralized controls like SCADA. However, in order to facilitate the penetration of distributed generation, the concept of microgrid was popularized. A microgrid can operate both in grid-connected and in islanded modes. One of the challenges in the microgrid environment is to provide both voltage control and maintain the system frequency while ensuring the stability of the network. This paper is a literature survey focused on different microgrid control techniques with different levels

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Sanae, El Bouassi, El Afou Youssef, Chalh Zakaria, Mehdi Mellouli El, and Haidi Touria. "Optimized triangular observer based adaptive supertwisting sliding mode control for wind turbine system." IAES International Journal of Artificial Intelligence (IJ-AI) 13, no. 4 (2024): 4229–40. https://doi.org/10.11591/ijai.v13.i4.pp4229-4240.

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This paper presents a modified adaptive supertwisting sliding mode controller (AST-SMC) that dynamically adjusts control settings without prior knowledge of uncertainty limits, thereby removing chattering and putting reliability first while maintaining the original benefits of sliding mode control (SMC). First, we model and build the wind turbine system using three different controllers: the AST-SMC, the supertwisting sliding mode controller (ST-SMC), and the first-order sliding mode controller (FOSMC). A second comparison is necessary. Only the rotor speed is available to the control law beca

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Jiang, Mengxing, and Linsheng Li. "Study of permanent magnet synchronous motor control based on sliding mode observer." Journal of Physics: Conference Series 2849, no. 1 (2024): 012024. http://dx.doi.org/10.1088/1742-6596/2849/1/012024.

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Abstract Permanent magnet synchronous motors have been widely used in modern life production. In order to realize the high precision control of permanent magnet synchronous motor, the traditional control method is to use an encoder and so on to obtain real-time speed and rotor position, but this method is difficult to maintain in the later stage. This article uses a sliding film observer instead of an encoder to obtain speed and rotor position. This paper adopts the saturation function instead of the traditional switching function, so as to reduce the vibration phenomenon of the traditional sl

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Tong, Menghao, and Shengsuo Niu. "Research on adaptive control strategies for grid-friendly photovoltaic storage network systems." Journal of Physics: Conference Series 2896, no. 1 (2024): 012050. https://doi.org/10.1088/1742-6596/2896/1/012050.

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Abstract To address the critical issue of frequency stability in grid-connected photovoltaic energy storage systems, a control strategy based on grid-friendly technologies is proposed. This strategy integrates the principles and topology of traditional Virtual Synchronous Generator (VSG) with adaptive VSG control and pre-synchronization techniques. Firstly, based on the traditional VSG control strategy, the frequency operation curve of the VSG is divided into three intervals corresponding to different control modes: islanding mode, PV-storage frequency stabilization mode, and adaptive regulati

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Jiandong, Qiu, Tang Minan, Yu Fan, Ran Jiajia, and Lin Dingqiang. "Research on port AGV trajectory tracking control based on improved fuzzy sliding mode control." Archives of Transport 69, no. 1 (2024): 7–20. http://dx.doi.org/10.61089/aot2024.9asah786.

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The operating environment of the port AGV is outdoors in the coastal area. There are complex and changeable environmental impacts such as rainfall, wind erosion, and salt erosion, which cause more disturbances to the port AGV. Aiming at the problem of the influence of environmental disturbance on trajectory tracking accuracy during the operation of port AGV, this paper proposes a control method based on fuzzy control theory and sliding mode variable structure control theory. Firstly, a two-degree-of-freedom dynamic model of AGV in port environment is established on the premise of accurately de

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Huang, Zhi Yu, and Xi Zheng. "Research on Sensorless Control of PMSM Based on Sliding Mode Observer." Applied Mechanics and Materials 668-669 (October 2014): 637–40. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.637.

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In the foundation of the realization of sensorless control of permanent magnet synchronous motor(PMSM) based on the traditional sliding mode observer, the paper focuses on the research on the chattering impacts on the estimation of rotor position and speed, which are caused by the sliding mode variable structure control. To weaken the chattering, the paper proposes two kinds of methods. First, the paper designs the saturation function with boundary layer thickness variable instead of sign function in the traditional sliding mode observer. Meanwhile, let the phase-locked loop (PLL) combine to t

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Xiao, Hongliang, Huacong Li, Jia Li, Jiangfeng Fu, and Kai Peng. "Research on Variable Cycle Engine Control Based on Model Reference Adaptive Sliding Mode Control Method." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 36, no. 5 (2018): 824–30. http://dx.doi.org/10.1051/jnwpu/20183650824.

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As to solve the problem of multivariable output tracking control of variable cycle engine under system uncertainties and external disturbances, an augmented model reference adaptive sliding mode control method based on LQR method was developed. Firstly, the model is augmented and the reference state is provided to the controller by designing the reference model using the optimal LQR method. Then, based on the state tracking sliding mode control method, the adaptive law is derived based on the strict stability condition of Lyapunov function to estimate the upper bound of the system perturbation

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Yang, Mu, Jing Chen, Meng Zhang, and Siyilang You. "Simulation research on sliding mode PID control of Buck converters with improved approaching law." Journal of Physics: Conference Series 2369, no. 1 (2022): 012055. http://dx.doi.org/10.1088/1742-6596/2369/1/012055.

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To solve the problem that Buck converters under traditional control strategies will be affected by various disturbances, resulting in poor stability, a new sliding mode PID control strategy based on improved power exponential reaching law is proposed. The sliding mode PID control model of Buck converter is constructed by using the state space average method. On this basis, the traditional reaching law is improved, and the system equivalent control expression of the improved reaching law is obtained by calculation. Finally, according to the equivalent control expression, the control models are

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Hu, Ke, Xiao Kai Wang, Jian Lan Luo, and Xi Jun Wu. "The Ring’s Axial Deformation Control Method of Vertical Hot Ring Rolling Process." Advanced Materials Research 941-944 (June 2014): 1865–70. http://dx.doi.org/10.4028/www.scientific.net/amr.941-944.1865.

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Axial deformation of the ring during the traditional vertical hot ring rolling (VHRR) process has a considerable effect on the ring products’ quality. In this paper, the ring’s axial deformation of VHRR process of three different rolling modes, that is, open-die mode, close-die mode and open-die mode with conical rolls like the radial-axial ring rolling (RARR) process is analyzed. Three groups of 3D coupled thermo-mechanical FE models of VHRR process are established in software ABAQUS, and the axial deformation and the width spread of the rings are studied in detail. Finally, a special conical

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Sun, Qiao, Shaokun Jia, Jie Zhang, Kunpeng Zhao, Zhixiang Li, and Bo Yu. "Research on redundant control mode of coordinated controller based on dual control cores." E3S Web of Conferences 213 (2020): 02006. http://dx.doi.org/10.1051/e3sconf/202021302006.

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Dual CPU redundant operation of PLC is of great significance to the reliability of industrial automation control system. In view of the problems existing in the traditional dual CPU PLC redundancy control mode based on hardware strategy, this paper proposes a dual CPU redundancy control idea based on software strategy, and describes in detail the specific scheme of Dual CPU redundancy software design using A-B ControlLogix series PLC.

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Wu, Jing-mei, and Xiao-ping Wang. "Grid-Connected PV Inverter Control Strategy Based on the Sliding Mode." Journal of Physics: Conference Series 2537, no. 1 (2023): 012010. http://dx.doi.org/10.1088/1742-6596/2537/1/012010.

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Abstract The Photovoltaic grid-connected inverter is an essential equipment of photovoltaic grid-connected system. Due to the disadvantages of the traditional PI control method for grid-connected photovoltaic inverters, this paper adopts the integral sliding mode variable structure to control grid-connected inverters. Grid inverter DC control mode was introduced in detail in the sliding mode variable structure control strategy. Using Matlab simulation platform to compare and analyze the traditional PI voltage compensation control strategy and sliding mode variable structure control strategy. F

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He, Jiangtao. "Research on the online open course of ancient literature in the “Internet+” era." Journal of Computational Methods in Sciences and Engineering 23, no. 6 (2023): 3201–8. http://dx.doi.org/10.3233/jcm-226946.

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This paper firstly introduced the traditional classroom teaching mode, proposed the massive open online courses (MOOC) online teaching platform, and combined it with the traditional teaching mode for the teaching of ancient literature course. In case study, 200 students from Ningbo University of Finance and Economics were divided into a control class and an experimental class. The control class was taught by the traditional mode, while the experimental class was taught by the new mode combining traditional with MOOC. The final results showed that there was little difference in the grade distri

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Jiang, Haoran, Xiaodong Lv, Xiaoqi Fan, and Guangming Zhang. "Research on Sensorless Control System of Permanent Magnet Synchronous Motor Based on Improved Fuzzy Super Twisted Sliding Mode Observer." Electronics 14, no. 9 (2025): 1900. https://doi.org/10.3390/electronics14091900.

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In order to achieve precise vector control of permanent magnet synchronous motors and maintain reliability during operation, it is necessary to obtain more accurate rotor position and rotor angular velocity. However, the installation of sensors can lead to increased motor volume and cost, so it is necessary to use sensorless estimation of rotor position and angular velocity. The switching function of traditional sliding mode observers is a discontinuous sign function, which can lead to serious chattering problems and phase lag problems caused by low-pass filters. Therefore, this article propos

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Liang, Jing, Kai Jing, Yan Dong, Xiaping Lin, and Yuqing Wang. "Nominal-Model-Based Sliding-Mode Control for Traveling-Wave Ultrasonic Motor." Micromachines 13, no. 11 (2022): 1846. http://dx.doi.org/10.3390/mi13111846.

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Traveling-wave ultrasonic motors (TWUSMs) have strong nonlinearity and uncertainty, which are sensitive to the environment, disturbances, and load changes. Thus, precision control of TWUSMs is hard to achieve with traditional methods for complex driving mechanisms. A nominal-model-based sliding-mode control strategy with strong robustness is proposed to achieve accurate speed control of TWUSMs. Firstly, a second-order nominal model of the speed difference and output torque was deduced to construct a nonlinear sliding-mode surface; then, a nonlinear sliding-mode controller was designed with the

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