Proceedings Article10.1109/peds57185.2023.10246506
A Pulsewidth Modulation Based Double Integral Sliding Mode Controller for Class-D Amplifiers
N. Aimaier,Nicolas Constantin,Glenn Cowan +2 more
- 07 Aug 2023
pp 1-5
TL;DR: A PWM-based DISMC for a class-D amplifier is stable under proper controller gains.
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Abstract: In recent years, sliding mode control (SMC) has become more feasible for power electronic converters. One variation of SMC is double integral sliding mode control (DISMC), which has shown good regulation of output voltage, minimum steady-state error, and fast dynamic response to load variation. However, DISMC was rarely applied to class-D amplifiers, and the biggest challenge for applying it to class-D is the stability condition. It becomes more complex than DC-DC converters in which the reference signal is constant and the system’s dynamics at steady state are zero. On the other hand, a class-D amplifier’s reference is a time-varying signal and the system’s dynamics at steady-state are not zero anymore. In this paper, a detailed stability analysis of a PWM-based DISMC for a class-D amplifier is conducted, and controller gains are derived. Simulation results validate the stability of a class-D amplifier that uses DISMC.
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References
Variable structure control: a survey
John Y. Hung,W. Gao,J.C. Hung +2 more
TL;DR: A tutorial account of variable structure control with sliding mode is presented, introducing in a concise manner the fundamental theory, main results, and practical applications of this powerful control system design approach.
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On the practical design of a sliding mode voltage controlled buck converter
TL;DR: This paper presents a simple and systematic approach to the design of a practical sliding mode voltage controller for buck converters operating in continuous conduction mode.
A fixed-frequency pulsewidth modulation based quasi-sliding-mode controller for buck converters
TL;DR: In this paper, the design and analysis of a PWM-based quasi-sliding-mode voltage controller for buck converters from a circuit design perspective is presented. And a practical design approach that aims at systematizing the procedure for the selection of the control parameters is presented in addition to a simple analog form of the controller for practical realization.
Indirect Sliding Mode Control of Power Converters Via Double Integral Sliding Surface
TL;DR: In this paper, the same approach of integral sliding mode control is ineffective in alleviating the converter's steady-state regulation error and the error increases as the converter switching frequency decreases, and an additional double-integral term of the controlled variables is proposed for constructing the sliding surface of indirect sliding mode controllers.
Second-Order Sliding-Mode Controller Design and Its Implementation for Buck Converters
TL;DR: A second-order sliding-mode (SOSM) control method is developed for the regulation problem of a dc–dc buck converter and the resulting closed-loop system is globally finite-time stable, while similar SOSM control results only give the proof for finite- time convergence.
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