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Design of Second Order Sliding Mode and Sliding Mode Algorithms:A Practical Insight to DC-DC Buck Converter 被引量:2
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作者 Seyed Mehdi RakhtAla Monazzahalsadat Yasoubi Hassan HosseinNia 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2017年第3期483-497,共15页
This paper presents a simple and systematic approach to design second order sliding mode controller for buck converters.The second order sliding mode control(SOSMC)based on twisting algorithm has been implemented to c... This paper presents a simple and systematic approach to design second order sliding mode controller for buck converters.The second order sliding mode control(SOSMC)based on twisting algorithm has been implemented to control buck switch mode converter.The idea behind this strategy is to suppress chattering and maintain robustness and finite time convergence properties of the output voltage error to the equilibrium point under the load variations and parametric uncertainties.In addition,the influence of the twisting algorithm on the performance of closed-loop system is investigated and compared with other algorithms of first order sliding mode control such as adaptive sliding mode control(ASMC),nonsingular terminal sliding mode control(NTSMC).In comparative evaluation,the transient response of the output voltage with the step change in the load and the start-up response of the output voltage with the step change in the input voltage of buck converter were compared.Experimental results were obtained from a hardware setup constructed in laboratory.Finally,for all of the surveyed control methods,the theoretical considerations,numerical simulations,and experimental measurements from a laboratory prototype are compared for different operating points.It is shown that the proposed twisting method presents an improvement in steady state error and settling time of output voltage during load changes. 展开更多
关键词 DC-DC buck converter non-singular-terminal sliding mode second order sliding mode twisting algorithm
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Twisting Sliding Mode Control of an Electrostatic MEMS Micromirror for a Laser Scanning System
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作者 Hui Chen Zhendong Sun +1 位作者 Weijie Sun John Tze Wei Yeow 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2019年第4期1060-1067,共8页
In this paper,we present a twisting control scheme with proportional-integral-derivative(PID)sliding surface for a two-axis electrostatic torsional micromirror,and the utilization of the proposed scheme in a laser sca... In this paper,we present a twisting control scheme with proportional-integral-derivative(PID)sliding surface for a two-axis electrostatic torsional micromirror,and the utilization of the proposed scheme in a laser scanning system.The experimental results of set-point regulation verify that the proposed scheme provides enhanced transient response and positioning performance as compared to traditional sliding mode control.To evaluate the tracking performance of the closed-loop system,triangular waves with different frequencies are used as desired traces.With the proposed scheme the experimental results verified that the closed-loop controlled micromirror follows the given triangular trajectories precisely.A micromirror-based laser scanning system is developed to obtain images.When compared with open-loop control,the experimental results demonstrated that the proposed scheme is able to reduce the distortion of the raster scan,and improve the imaging performance in the presence of cross-coupling effect. 展开更多
关键词 Electrostatic micromirror IMAGING microelectromechanical system(MEMS) twisting algorithm
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带有滑模观测器的永磁同步电机改进型PID控制 被引量:5
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作者 王飚 林少军 柯吉 《微电机》 2021年第7期66-72,112,共8页
针对传统滑模观测器的抖振现象严重、估计精度低等问题,提出了一种带有二阶滑模观测器的内嵌式永磁同步电机改进型PID控制方案。根据Super Twisting Algorithm设计了二阶滑模观测器,取消了传统滑模观测器方案中的低通滤波器与位置补偿环... 针对传统滑模观测器的抖振现象严重、估计精度低等问题,提出了一种带有二阶滑模观测器的内嵌式永磁同步电机改进型PID控制方案。根据Super Twisting Algorithm设计了二阶滑模观测器,取消了传统滑模观测器方案中的低通滤波器与位置补偿环节,有效抑制了滑模抖振,提高了估计精度。为了进一步改善系统的动态性能,基于牛顿插值法构造了一种具有滤波功能的离散微分器并利用三点离散微分器代替传统微分设计了转速环改进型PID控制器。仿真验证了该方案能够有效抑制抖振现象,估计精度高,稳态性能与动态性能较好。 展开更多
关键词 super twisting algorithm 二阶滑模观测器 牛顿插值法 离散微分器
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A STA Current-Constrained Control for PMSM Speed Regulation System with Function Disturbance Observer
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作者 Bin Zhang Boqiang Wei 《Energy Engineering》 EI 2022年第3期1197-1218,共22页
The non-cascade permanent magnet synchronous motor control system has the advantages of simple structure and less adjustable parameters,but the non-cascade structure needs to solve the problem of over-current protecti... The non-cascade permanent magnet synchronous motor control system has the advantages of simple structure and less adjustable parameters,but the non-cascade structure needs to solve the problem of over-current protection.In this paper,a current constrained control method is used to limit the starting current to a safe range.At the same time,to ensure the robustness and rapidity of the system,a super twist current constraint controller(CCSTA)is generated by combining super twist algorithm(STA)with current constraint control;Considering the diversity of internal and external disturbances,a functional disturbance observer(FDOB)is proposed to compensate the matched and unmatched disturbances,which further improves the robustness of the system. 展开更多
关键词 Non cascade structure current constrained control super twist algorithm functional disturbance observer
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Second-order Sliding Mode Approaches for the Control of a Class of Underactuated Systems 被引量:2
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作者 Sonia Mahjoub Faical Mnif Nabil Derbel 《International Journal of Automation and computing》 EI CSCD 2015年第2期134-141,共8页
In this paper, first-order and second-order sliding mode controllers for underactuated manipulators are proposed. Sliding mode control(SMC) is considered as an effective tool in different studies for control systems. ... In this paper, first-order and second-order sliding mode controllers for underactuated manipulators are proposed. Sliding mode control(SMC) is considered as an effective tool in different studies for control systems. However, the associated chattering phenomenon degrades the system performance. To overcome this phenomenon and track a desired trajectory, a twisting, a supertwisting and a modified super-twisting algorithms are presented respectively. The stability analysis is performed using a Lyapunov function for the proposed controllers. Further, the four different controllers are compared with each other. As an illustration, an example of an inverted pendulum is considered. Simulation results are given to demonstrate the effectiveness of the proposed approaches. 展开更多
关键词 Underactuated manipulator sliding mode control twisting algorithm super-twisting algorithm inverted pendulum.
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On-line RNN compensated second order nonsingular terminal sliding mode control for hypersonic vehicle 被引量:1
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作者 Ruimin Zhang Li Wang Yingjiang Zhou 《International Journal of Intelligent Computing and Cybernetics》 EI 2012年第2期186-205,共20页
Purpose–The purpose of this paper is to design a robust control scheme to achieve robust tracking of velocity and altitude commands for a general hypersonic vehicle(HSV)in the presence of parameter variations and ext... Purpose–The purpose of this paper is to design a robust control scheme to achieve robust tracking of velocity and altitude commands for a general hypersonic vehicle(HSV)in the presence of parameter variations and external disturbances.Design/methodology/approach–The robust control scheme is composed of nonsingular terminal sliding mode control(NTSMC),super twisting control algorithm(STC)and recurrent neural network(RNN).First,by combing a novel NTSMC and STC algorithm,a second order NTSMC approach for HSV is proposed to provide fast,continuous and high precision tracking control.Second to relax the requirements for the bounds of the lumped uncertainties in control design,a RNN disturbance observer is presented to increase the robustness of the control system.The weights of RNN are updated by adaptive laws based on Lyapunov theorem,thus the closed-loop stability can be guaranteed.Findings–Simulation results demonstrate that the proposed method is effective,leading to promising performance.Originality/value–The main contributions of this work are:first,both parameter variations and external disturbances are considered in control design for the longitudinal dynamic model of HSV;and second,the proposed controller can remove chattering and achieve more favorable tracking performances than conventional sliding mode control. 展开更多
关键词 Nonsingular terminal sliding mode control Hypersonic vehicle Super twisting control algorithm Recurrent neural network Second order sliding mode control Hypersonic flow Neural nets
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