Robust control of mismatched buck DC–DC converters by PWM-based sliding mode control schemes

Pandey, Sunil; Patil, S. L.; Ginoya, Divyesh; Chaskar, Uttam; Phadke, S. B.

doi:10.1016/j.conengprac.2018.11.010

Cited by 44 publications

(25 citation statements)

References 34 publications

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“…Thus, there exists a finite time T > 0 such that the sling variable s will converge to zero [30]. And consequently, the position tracking error (14) will converge to zero exponentially due to the exponential converge rate of the sliding variable s, and all signals will be bounded due to the boundedness of the practical system states and the desired motion trajectory. The proof is completed.…”

Section: B Position Tracking Controller Designmentioning

confidence: 99%

“…Note that the calculation of the variable s is based on the estimated signals provided by the observer (22). (3) In the last step, the position tracking error (14) will converge to zero exponentially due to the exponential converge rate of the sliding variable (16). And consequently, the controlled plant (x1 -xd) will also converge to zero exponentially.…”

Section: Stability Analysis Of the Closed Loop Systemmentioning

confidence: 99%

“…However, the control law is extremely complicated due to the differentiating of the virtual control signal in each step, which is well-known as "explosion of term" problem. The multiple-surface based sliding mode control [13,14] is essentially the same as the back-stepping based sliding mode control, in which the "explosion of term" problem also exits. The dynamic surface technology [15] can be used to calculate the derivative of the virtual control signal in each step, thus the back-stepping based control law is significantly simplified, but this usually leads to slower response of the closed loop system due to the extra dynamics of the controller.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Observer Based Sliding Mode Control for Hydraulic Driven Barrel Servo System With Unknown Dynamics

Zou

2020

IEEE Access

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The position tracking control of a barrel system driven by a two-stage hydraulic cylinder with long transmission lines was addressed in this paper. First, an active balancing system was designed to balance the gravitational torque which may deteriorate the performance of the barrel control system. The active balancing system is totally isolated from the barrel control system; thus the dynamics of the barrel servo system is significantly simplified. The effects of the long transmission lines were also considered during the modeling of the barrel servo system. In order to exactly estimate the unmeasured states and the mechanical disturbance, an extended state observer was designed by employing the Levant's Differentiator, thus the estimation errors would converge to zero exponentially. Then, based on the estimated signals, the barrel system was transformed into the pure integration chain form, thus the sliding mode technology can be directly utilized. After that, a sliding mode controller is designed to make the position output of the barrel to track different motion trajectories as close as possible in the presence of model uncertainty and unknown dynamics. The closed loop system was proven to be asymptotical stable in the sense of Lyapunov theory. Three different motion trajectories were tested to verify the effectiveness of the proposed controller.

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Section: B Position Tracking Controller Designmentioning

confidence: 99%

Section: Stability Analysis Of the Closed Loop Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Observer Based Sliding Mode Control for Hydraulic Driven Barrel Servo System With Unknown Dynamics

Zou

2020

IEEE Access

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“…Recently, a DC-DC converter is applied successfully in many modern applications such as wind turbine systems, a driver for a DC motor, communication systems, automation systems, and photovoltaic systems [1][2][3][4][5]. The buck, boost, and buck/boost are important topologies of the DC-DC converter, and all these topologies try to regulate the output voltages and track the desired voltage in the presence of the system uncertainty and external disturbance [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

System uncertainties estimation based adaptive robust backstepping control for DC DC buck converter

Mary

Miry²,

Miry³

2021

IJECE

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This paper proposed a novel adaptive robust backstepping control scheme for DC-DC buck converter subjected to external disturbance and system uncertainty. Uncertainty in the load resistance and the input voltage represent the big challenge in buck converter control. In this work, an adaptive estimator for matched and mismatched uncertainties based backstepping control is applied for DC-DC buck converter. The updating laws are determined based on the lyapunov theorem. Thus, the difference between the estimated parameters and actual parameters converges to zero. The proposed control method is compared with the conventional sliding mode control and integral sliding mode control. Simulation results demonstrate the effectiveness and robustness of the proposed controller.

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“…According to the authors' best knowledge, this is the first attempt to design an adaptive NTSMC using supervisory fuzzy control to control the output voltage of the buck converter. Compared to the previous studies on this issue (Ma, Zhang, Yang, Ding, & Dong, 2018;Pandey, Patil, Ginoya, Chaskar, & Phadke, 2019;Wang, Li, & Li, 2020), this research attempts to avoid the singularity problem in the control input signal and also proposes the hysteresis modulation and fuzzy supervisory method to prevent high frequency of MOSFET switching. Motivated by the above discussions, the contributions of this research are summarized as follows…”

Section: Introductionmentioning

confidence: 99%

Design of an adaptive nonsingular terminal sliding mode using supervisory fuzzy for the output voltage control of a buck converter

Badfar¹,

Abdollahi²

2020

JART

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The buck converter is widely utilized in various applications such as solar chargers, electrical vehicles and space exploration. The use of an efficient controller in buck converters reduces the heat and losses, extends the useful life, and allows for smaller gadgets to be built. In this research, a novel technique is proposed to regulate the output voltage of the buck converter. For this purpose, the mathematical model of the converter is introduced. Next, the adaptive sliding mode is suggested to regulate the output voltage. In order to ensure the faster transient response and finite-time convergence, the terminal sliding mode control is suggested. The singularity problem is solved by using nonsingular terminal sliding mode control. The switching gain is adaptively scheduled according to the fuzzy logic system. Finally, some simulation results including the parametric uncertainties, measurement noise, and steady-state error analysis are illustrated to demonstrate the efficiency of the proposed controller.

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Robust control of mismatched buck DC–DC converters by PWM-based sliding mode control schemes

Cited by 44 publications

References 34 publications

Observer Based Sliding Mode Control for Hydraulic Driven Barrel Servo System With Unknown Dynamics

Observer Based Sliding Mode Control for Hydraulic Driven Barrel Servo System With Unknown Dynamics

System uncertainties estimation based adaptive robust backstepping control for DC DC buck converter

Design of an adaptive nonsingular terminal sliding mode using supervisory fuzzy for the output voltage control of a buck converter

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