Publications for Anders Helmersson
Co-author map based on ISI articles 2007-

Keywords

system synthesis state-space robust rational polynomial parametrizations parametrization non-linear model matrix identification h-infinity error controllers controller control constraints constraint algorithm

Journal Articles

Daniel Ankelhed, Anders Helmersson and Anders Hansson
  A Partially Augmented Lagrangian Method for Low Order H-Infinity Controller Synthesis Using Rational Constraints
  IEEE Transactions on Automatic Control, 2012, 57(11), 2901-2905.

Anders Helmersson
  Employing Kronecker Canonical Form for LMI-Based H-infinity Synthesis Problems
  IEEE Transactions on Automatic Control, 2012, 57(8), 2062-2067.

Daniel Ankelhed, Anders Helmersson and Anders Hansson
  A Quasi-Newton Interior Point Method for Low Order H-Infinity Controller Synthesis
  IEEE Transactions on Automatic Control, 2011, 56(6), 1462-1467.
   Fulltext  PDF  
 Web of Science® Times Cited: 3

Anders Helmersson
  LTV Model Reduction With Upper Error Bounds
  IEEE Transactions on Automatic Control, 2009, 54(7), 1450-1462.
 Web of Science® Times Cited: 1

Tomas McKelvey, Anders Helmersson and T. Ribarits
  Data Driven Local Coordinates for Multivariable Linear Systems and their Application to System Identification
  Automatica, 2004, 40(9), 1629-1635.
 Web of Science® Times Cited: 15

Torkel Glad, Anders Helmersson and Lennart Ljung
  Robustness Guarantees for Linear Control Designs with an Estimated Nonlinear Model Error Model
  International Journal of Robust and Nonlinear Control, 2004, 14(11), 959-970.

Anders Helmersson
  µ Synthesis and LFT Gain Scheduling with Real Uncertainties
  International Journal of Robust and Nonlinear Control, 1998, 8(7), 631-642.

Conference Articles

Patrik Axelsson, Goele Pipeleers, Anders Helmersson and Mikael Norrlöf
  H Synthesis Method for Control of Non-linear Flexible Joint Models
  19th IFAC World Congress, August 24-29, Cape Town, South Africa, 2014.


Patrik Axelsson, Anders Helmersson and Mikael Norrlöf
  H-Controller Design Methods Applied to One Joint of a Flexible Industrial Manipulator
  19th IFAC World Congress, August 24-29, Cape Town, South Africa, 2014.


David Törnqvist, Anders Helmersson and Fredrik Gustafsson
  Window Based GPS Integrity Test using Tight GPS/IMU Integration Applied to a Sounding Rocket
  Proceedings of the 2010 IEEE Aerospace Conference, 2010.


Daniel Ankelhed, Anders Helmersson and Anders Hansson
  A Primal-Dual Method for Low Order H-Infinity Controller Synthesis
  Proceedings of Reglermöte 2010, 2010.


Daniel Ankelhed, Anders Helmersson and Anders Hansson
  A Primal-Dual Method for Low Order H-Infinity Controller Synthesis
  Proceedings of the 48th IEEE Conference on Decision and Control held jointly with the 28th Chinese Control Conference, 2009.


Torkel Glad, Anders Helmersson, Martin Enqvist and Lennart Ljung
  Controllers for Amplitude Limited Model Error Models
  Proceedings of the 16th IFAC World Congress, 2005.


Anders Hansson, Anders Helmersson and Torkel Glad
  Stability Analysis of Nonlinear Systems using Frozen Stationary Linearization
  Proceedings of the 2004 American Control Conference, 2004.


Lennart Ljung, Anders Helmersson and Torkel Glad
  Uncertain LTI-Models for Linear Control Design of Nonlinear Systems
  Proceedings of the 40th IEEE Conference on Decision and Control, 2001.


Anders Helmersson
  IQC Synthesis based on Inertia Constraints
  Proceedings of the 14th IFAC World Congress, 1999.


Anders Helmersson
  An IQC-Based Stability Criterion for Systems with Slowly Varying Parameters
  Proceedings of the 14th IFAC World Congress, 1999.


Anders Helmersson
  Parameter Dependent Lyapunov Functions Based on Linear Fractional Transformation
  Proceedings of the 14th IFAC World Congress, 1999.


Anders Helmersson and Tomas McKelvey
  A Dynamical Minimal Parametrization of Multivariable Linear Systems and its Application to Optimization and System Identification
  Proceedings of the 14th IFAC World Congress, 1999.


Anders Helmersson, Tomas McKelvey and Johan Gunnarsson
  Matrix Algebra Package for Mathematica
  Proceedings of Reglermöte 1998, 1998.


Anders Helmersson and Tomas McKelvey
  µ-Synthesis with Matrix Valued Scalings - Algorithms and Examples
  Proceedings of the 1997 IEEE American Control Conference, 1997.


Anders Helmersson and Tomas McKelvey
  System Identification using an Over-Parametrized Model Class - Improving the Optimization Algorithm
  Proceedings of the 36th IEEE Conference on Decision and Control, 1997.


Anders Helmersson and Tomas McKelvey
  State-Space Parametrizations of Multivariable Linear Systems using Tridiagonal Matrix Forms
  Proceedings of Reglermöte 1996, 1996.


Anders Helmersson
  An Uncertainty Approach to µ Analysis
  Proceedings of the 13th IFAC World Congress, 1996.


Anders Helmersson and Tomas McKelvey
  A Subspace Approach for Approximation of Rational Matrix Functions to Sampled Data
  Proceedings of the 35th IEEE Conference on Decision and Control, 1996.


Anders Helmersson and Tomas McKelvey
  State-Space Parametrizations of Multivariable Linear Systems using Tridiagonal Matrix Forms
  Proceedings of the 35th IEEE Conference on Decision and Control, 1996.


Anders Helmersson
  Applications of Real-µ Gain Scheduling
  Proceedings of the 35th IEEE Conference on Decision and Control, 1996.


Anders Helmersson
  µ Synthesis and LFT Gain Scheduling with Mixed Uncertainties
  Proceedings of the 3rd European Control Conference, 1995.


Anders Helmersson
  An LFT Parameterization of Lyapunov Functions
  Proceedings of the 2nd Russian Swedish Control Conference, 1995.


Anders Helmersson
  Applications of Mixed µ-Synthesis using the Passivity Approach
  Proceedings of the 3rd European Control Conference, 1995.


Anders Helmersson
  A Finite Frequency method for µ-Analysis
  Proceedings of the 3rd European Control Conference, 1995.


Anders Helmersson
  A Nonlinear Application of a Lyapunov Technique for Assuring Global Performance Bounds
  Proceedings of the 1994 American Control Conference, 1994.


Anders Helmersson
  Model reduction using LMIs
  Proceedings of the 33rd IEEE Conference on Decision and Control, 1994.


Ph.D. Theses

Daniel Ankelhed
  On design of low order H-infinity controllers
  2011.


  Fulltext PDF

Methods for robust gain scheduling
  1995.


  Fulltext PDF

Licentiate Theses

Sina Khoshfetrat Pakazad
  Topics in Robustness Analysis
  2011.


  Fulltext PDF

Daniel Ankelhed
  On low order controller synthesis using rational constraints
  2009.


  Fulltext PDF

Reports

Patrik Axelsson, Anders Helmersson and Mikael Norrlöf
  H-Controller Design Methods Applied to One Joint of a Flexible Industrial Manipulator
  LiTH-ISY-R, 3067, 2013.


  Fulltext PDF

Patrik Axelsson, Goele Pipeleers, Anders Helmersson and Mikael Norrlöf
  H Synthesis Method for Control of Non-linear Flexible Joint Models
  LiTH-ISY-R, 3068, 2013.


  Fulltext PDF

Patrik Axelsson, Anders Helmersson and Mikael Norrlöf
  Single Joint Control of a Flexible Industrial Manipulator using H Loop Shaping
  LiTH-ISY-R, 3053, 2012.


  Fulltext PDF

Daniel Ankelhed, Anders Helmersson and Anders Hansson
  A Partially Augmented Lagrangian Method for Low Order H-Infinity Controller Synthesis Using Rational Constraints
  LiTH-ISY-R, 3008, 2011.


  Fulltext PDF

Anders Helmersson
  Employing Kronecker Canonical Form for H-infinity Synthesis Problems
  LiTH-ISY-R, 3007, 2011.


  Fulltext PDF

David Törnqvist, Anders Helmersson and Fredrik Gustafsson
  Tight Integration Between IMU and GPS for Sounding Rockets
  LiTH-ISY-R, 2929, 2010.


  Fulltext PDF

Daniel Ankelhed, Anders Helmersson and Anders Hansson
  A Primal-Dual Method for Low Order H-Infinity Controller Synthesis
  LiTH-ISY-R, 2933, 2010.


  Fulltext PDF

Daniel Ankelhed, Anders Helmersson and Anders Hansson
  Additional Numerical Results for the Quasi-Newton Interior Point Method for Low Order H-Infinity Controller Synthesis
  LiTH-ISY-R, 2964, 2010.


  Fulltext PDF

Anders Helmersson
  On Polynomial Coefficients and Rank Constraints
  LiTH-ISY-R, 2878, 2009.


  Fulltext PDF

Anders Helmersson
  On Polynomial Coefficients and Rank Constraints
  LiTH-ISY-R, 2867, 2008.


  Fulltext PDF

Torkel Glad, Anders Helmersson and Lennart Ljung
  Uncertain LTI-Models for Linear Control Design of Nonlinear Systems
  LiTH-ISY-R, 2808, 2007.


  Fulltext PDF

Daniel Ankelhed, Anders Helmersson and Anders Hansson
  Suboptimal Model Reduction using LMIs with Convex Constraints
  LiTH-ISY-R, 2759, 2006.


  Fulltext PDF

Anders Helmersson
  LTV Model Reduction with Upper Error Bounds
  LiTH-ISY-R, 2725, 2006.


  Fulltext PDF

Torkel Glad, Anders Helmersson, Martin Enqvist and Lennart Ljung
  Controllers for Amplitude Limited Model Error Models
  LiTH-ISY-R, 2719, 2005.


  Fulltext PDF

Torkel Glad, Anders Helmersson and Lennart Ljung
  Robustness Guarantees for Linear Control Designs with an Estimated Nonlinear Model Error Model
  LiTH-ISY-R, 2592, 2004.


  Fulltext PDF

Anders Hansson, Anders Helmersson and Torkel Glad
  Stability Analysis of Nonlinear Systems using Frozen Stationary Linearization
  LiTH-ISY-R, 2512, 2003.


  Fulltext PDF

Anders Helmersson
  On Synthesis of Practically Valid Gain-Scheduled Controllers
  LiTH-ISY-R, 2528, 2003.


  Fulltext PDF

Jörgen Hansson, Anders Helmersson, Ragnar Wallin, Karin Ståhl-Gunnarsson, Fredrik Karlsson and Anders Hansson
  Clearance of Flight Control Laws for Time-Varying Parameters
  LiTH-ISY-R, 2551, 2003.


  Fulltext PDF

Johan Gunnarsson, Tomas McKelvey and Anders Helmersson
  Matrix Algebra Package for Mathematica
  LiTH-ISY-R, 2133, 1999.


  Fulltext PDF

Tomas McKelvey and Anders Helmersson
  System Identification using an Over-Parametrized Model Class - Improving the Optimization Algorithm
  LiTH-ISY-R, 2136, 1999.


  Fulltext PDF

Tomas McKelvey and Anders Helmersson
  µ-Synthesis with Matrix Valued Scalings - Algorithms and Examples
  LiTH-ISY-R, 2134, 1999.


  Fulltext PDF

Anders Helmersson
  IQC Synthesis based on Inertia Constraints
  LiTH-ISY-R, 1994, 1998.


  Fulltext PDF

Anders Helmersson
  An IQC-Based Stability Criterion for Systems with Slowly Varying Parameters
  LiTH-ISY-R, 1979, 1997.


  Fulltext PDF

Tomas McKelvey and Anders Helmersson
  State-Space Parametrizations of Multivariable Linear Systems using Tridiagonal Matrix Forms
  LiTH-ISY-R, 1901, 1996.


  Fulltext PDF

Tomas McKelvey and Anders Helmersson
  A Subspace Approach for Approximation of Rational Matrix Functions to Sampled Data
  LiTH-ISY-R, 1902, 1996.


  Fulltext PDF

Anders Helmersson
  An Uncertainty Augmentation Approach to Varying µ Analysis
  LiTH-ISY-R, 1731, 1995.


  Fulltext PDF

Anders Helmersson
  µ Synthesis and LFT Gain Scheduling with Time Varying Mixed Uncertainties
  LiTH-ISY-R, 1714, 1995.


  Fulltext PDF

Anders Helmersson
  A Nonlinear Application of a Lyapunov Technique for Assuring Global Performance Bounds
  LiTH-ISY-R, 1601, 1994.


  Fulltext PDF

Anders Helmersson
  State-Space Methods for µ-Analysis
  LiTH-ISY-R, 1587, 1994.


  Fulltext PDF

Anders Helmersson
  Applications of Mixed µ-Synthesis Using the Passivity Approach
  LiTH-ISY-R, 1688, 1994.


  Fulltext PDF

Anders Helmersson
  µ Synthesis and LFT Gain Scheduling with Mixed Uncertainties
  LiTH-ISY-R, 1691, 1994.


  Fulltext PDF

Anders Helmersson
  Model Reduction using LMIs
  LiTH-ISY-R, 1579, 1994.


  Fulltext PDF

Anders Helmersson
  Model reduction from an H∞/LMI perspective
  LiTH-ISY-R, 1690, 1994.


  Fulltext PDF

Anders Helmersson
  A Finite Frequency Method for µ-Analysis
  LiTH-ISY-R, 1689, 1994.


  Fulltext PDF