System Identification and controller tuning rule for DC-DC converter using ripple voltage waveform
01 Dec 2006-pp 1-4
TL;DR: Based on the parameters identified and using the user specification of gain margin and phase margin, PI controller parameter tuning rule is proposed and the closed loop performance with line and load variation of the buck converter is simulated using MATLAB/SIMULINK.
Abstract: The ripple voltage waveform of DC-DC buck converter is used for system identification Based on the parameters identified and using the user specification of gain margin and phase margin, PI controller parameter tuning rule is proposed The closed loop performance with line and load variation of the buck converter is simulated using MATLAB/SIMULINK and analyzed The robustness measure of the PI controller on the performance is also studied
Citations
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01 Jan 2012
TL;DR: This chapter will provide an outline of tuning rules for continuous-time PI and PID control of time-delayed single-input, single-output (SISO) processes.
Abstract: The ability of PI and PID controllers to compensate many practical processes has led to their wide acceptance in industrial applications The requirement to choose two or three controller parameters is most easily done using tuning rules Starting with a general discussion of industrial practice, the chapter will provide an outline of tuning rules for continuous-time PI and PID control of time-delayed single-input, single-output (SISO) processes
30 citations
01 Jan 2012
TL;DR: In this article, the authors developed Signal Processing methods which increase the performance, functionality and reliability of dc-dc converters which is part of an ongoing project of Ericsson together with Blekinge Institute of Technology.
Abstract: The thesis is to develop Signal Processing methods which increase the performance, functionality and reliability of dc-dc converters which is part of an ongoing project of Ericsson together with Blekinge Institute of Technology. The aim of this project is to model the buck converter system of Ericson’s BMR450 using MATLAB Simulink and develop methods to identify the capacitive load. Our first approach is to derive the equation which gives relation of capacitive load with output voltage in time domain analysis. Our second method deals with resonant point of frequency response of buck converter using Linearization method. Our final method deals in frequency domain analysis using FFT. For different values, we calculated the capacitive load values using proposed methods and compared them to the original values to observe the percentage of errors.
Cites methods from "System Identification and controlle..."
...We also can customize, can create batch processing scripts, and define signal, parameters and test data [7]....
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...In [6] and [7] few methods to identify load parameter of buck converter are proposed....
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References
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TL;DR: A simple method for estimating the critical gain and the critical frequency is described, which may be used for automatic tuning of simple regulators as well as initialization of more complicated adaptive regulators.
1,763 citations
TL;DR: In this paper, a book that is a kind of precious book written by an experienced author is recommended for autotuning of Pid controllers and the reasonable reasons why you need to read this book are discussed.
Abstract: Any books that you read, no matter how you got the sentences that have been read from the books, surely they will give you goodness. But, we will show you one of recommendation of the book that you need to read. This autotuning of pid controllers is what we surely mean. We will show you the reasonable reasons why you need to read this book. This book is a kind of precious book written by an experienced author.
202 citations
"System Identification and controlle..." refers background in this paper
...[1] discusses on the PI tuning and analysis for different types of systems....
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TL;DR: In this article, a ripple control buck regulator for stepping down highvoltage adaptor or battery supplies to low-voltage CPU core supply in notebook computers is presented, which is done by using a phase-frequency detector (PFD) to lock the frequency of switching signal with the input clock.
Abstract: This paper presents a ripple control buck regulator for stepping down high-voltage adaptor or battery supplies to low-voltage CPU core supply in notebook computers. Methods and circuits are proposed to achieve fixed switching frequency operation. The control loop adjusts delay of the controller and thus controls the output frequency. This is done by using a phase-frequency detector (PFD) to lock the frequency of switching signal with the input clock. The delay value is determined automatically according to operating conditions. Simulation results showed fast load and line transient responses and fixed frequency operations in steady states. In addition, stability of the regulator is shown under a very low output-to-input voltage ratio condition that is difficult for conventional PWM controllers.
74 citations
"System Identification and controlle..." refers background in this paper
...[4] describes the ripple voltage regulation of Buck converter....
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TL;DR: In this paper, a systematic approach to derive analytical expressions for relay feed back responses is proposed based on the observation that a relay feedback test consists of a series of step inputs and a stable limit cycle implies a convergent infinite series.
62 citations
"System Identification and controlle..." refers background or methods in this paper
...The analytical expression for the relay feedback response of this kind of processes is given in [2]....
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...Using the landmark points, the boundary conditions (3) are used to estimate the parameters [2]....
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...[2] discusses on identifying the system parameters using the waveshape that results form the relay feedback experiment....
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