Autotuning of Digitally Controlled DC–DC Converters Based on Relay Feedback

Stefanutti, W.; Mattavelli, Paolo; Saggini, S.; Ghioni, M.

doi:10.1109/tpel.2006.886614

Cited by 144 publications

(45 citation statements)

References 12 publications

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“…However, it has feasible operating regions only in the buck converter with resistive load [26], and is therefore not suitable in our application that also requires boost mode operation. The autotuning PWM controllers, which also can be considered for applying to the stimulation system, dynamically adjusts the parameters of the compensation controller based on observing the perturbed test signal [27], [28] or the time-domain characteristics of the compensated error signal [29]. However, achieving a fast transient response at large-signal time-varying reference voltage with linear PWM controllers is a very daunting task [30]- [32], since they are optimized for a specific small-signal operating point.…”

Section: Existing Controllers Considered For the Psm Stimulatormentioning

confidence: 99%

Design and analysis of energy recyclable bidirectional converter with digital controller for multichannel microstimulators

Lee

Law

Bermak

2017

Analog Integr Circ Sig Process

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Abstract-The power supply modulated microstimulator system can drive an expandable electrode array with reduced heat generation across the current drivers and high stimulation efficiency. Although plenty of research efforts have been pour into demonstrating various applications of the power supply modulated microstimulators, a comprehensive analytical modelling of the system to investigate internal and external energy flow during biphasic stimulation pulses spanning over varying loading configurations (e.g. number of electrodes, and stimulation current amplitude) is still lacking. This paper fills the research gap by presenting the systematic tools for attaining insights of a stimulator system featuring a bidirectional DC-DC converter with an algorithmic digital controller. The models employed here are based on traditional analytical methods such as transfer functions and state-space dynamic models incorporating various energy loss circuit elements. With the models, the behaviour and power efficiency under a wide range of parameters associated with stimulator is attained. Numerical assessment reveals that the digital controller can track the output supply voltage at the phase transition boundaries just in tens of switching cycles. The system was also studied on a verification platform, where the internal signals of the digital controller were carefully examined. Measurement results show that the system behavior well matched to the simulation results, demonstrating the effectiveness of the analytical system model for obtaining key insights for generic large-scale micro-stimulator designs.

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Section: Existing Controllers Considered For the Psm Stimulatormentioning

confidence: 99%

Design and analysis of energy recyclable bidirectional converter with digital controller for multichannel microstimulators

Lee

Law

Bermak

2017

Analog Integr Circ Sig Process

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“…The application to other control areas except to the process industry of this algorithm is rarely seen in references. This algorithm is applied to voltage regulation control of the DC-DC transformer in [6] and to hydraulic servo system parameters tuning of Fatigue Testing Machine in [7], and the result proves to be good. The method in [7] is adopted to tune the hydraulic system PID parameters of the straightener and the simulation result shows that it is simple and effective.…”

Section: Introductionmentioning

confidence: 99%

Study of the hydraulic system simulation and PID autotuning based on relay feedback of the tantalum-niobium tube straightener

Zhang

Liu

et al. 2010

2010 5th IEEE Conference on Industrial Electronics and Applications

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The hydraulic gauge control system of the tantalumniobium tube straightener is introduced in this paper, in which the proportional valves are applied to control the force and position. Modeling and simulation of the hydraulic system is carried out with the DSHplus simulation tool according to the design parameters. During the simulation, it is found that the response performance of the hydraulic system varies greatly when straightening tubes in different diameters. In order to obtain a better control performance, the relay feedback method is adopted to tune the PID parameters, which is proved to be simple and effective.

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“…Both inner-and outer-loop controllers have been implemented using the proportional-integral (PI) control method due to its simplicity [11]- [13]. However, in the case of boost and buck-boost converters, the closed-loop performance of the PI-type inner-loop current control system clearly varies as the output voltage operation mode changes because of nonlinearities of these converters.…”

Section: Introductionmentioning

confidence: 99%

Input-Constrained Current Controller for DC/DC Boost Converter

Choi¹,

Kim²,

Kim³

et al. 2016

Journal of Power Electronics

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This paper presents a simple input-constrained current controller for a DC/DC boost converter with stability analysis that considers the nonlinearity of the converter model. The proposed controller is designed to satisfy the inherent input constraints of the converter under a physically reasonable assumption, which is the first contribution of this paper. The second contribution is providing a rigorous proof of the proposed control law, which keeps the closed-loop system along with the internal dynamics stable. The performance of the proposed controller is demonstrated through an experiment employing a 20-kW DC/DC boost converter.

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Autotuning of Digitally Controlled DC–DC Converters Based on Relay Feedback

Cited by 144 publications

References 12 publications

Design and analysis of energy recyclable bidirectional converter with digital controller for multichannel microstimulators

Design and analysis of energy recyclable bidirectional converter with digital controller for multichannel microstimulators

Study of the hydraulic system simulation and PID autotuning based on relay feedback of the tantalum-niobium tube straightener

Input-Constrained Current Controller for DC/DC Boost Converter

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