Publications
Last Updated: January 23, 2006
International journal papers
- X.Huang, R.Nagamune and R.Horowitz,
``A Comparison of Multirate Robust Track-following Control Synthesis
Techniques for Dual-stage and Multisensing Servo Systems in Hard Disk
Drives,''
IEEE Transactions on Magnetics, vol.42, no.7,
pp.1896-1904, 2006
(pdf-file)
- R.A.de Callafon, R.Nagamune and R.Horowitz,
``Robust Dynamic Modeling and Control of Dual-stage Actuators,''
IEEE Transactions on Magnetics, vol.42, no.2, Part 1,
pp.247-254, 2006
(pdf-file)
- R.Nagamune and A.Blomqvist,
``Sensitivity shaping with degree constraint by nonlinear least-square
optimization,''
Automatica, vol.41, no.7, pp.1219-1227, 2005
(pdf-file)
- A.Blomqvist and R.Nagamune,
``Optimization-based computation of analytic interpolants of bounded
complexity,''
Systems and Control Letters, vol.54, no.9, pp.855-864, 2005
(pdf-file)
- R.Nagamune,
``Closed-loop Shaping Based on Nevanlinna-Pick Interpolation with
a Degree Bound,''
IEEE Transactions on Automatic Control,
vol.49, no.2, pp.300-305, 2004
(pdf-file)
- R.Nagamune,
``A shaping limitation of rational sensitivity functions with a degree
constraint,''
IEEE Transactions on Automatic Control,
vol.49, no.2, pp.296-300, 2004
(pdf-file)
- A.Blomqvist, A.Lindquist and R.Nagamune,
``Matrix-valued Nevanlinna-Pick interpolation with complexity
constraint: An optimizaiton approach,''
IEEE Transactions on Automatic Control,
vol.48, no.12, pp.2172-2190, 2003
(pdf-file)
- R.Nagamune,
``A Robust Solver Using a Continuation Method for Nevanlinna-Pick
Interpolation with Degree Constraint,''
IEEE Transactions on Automatic Control,
vol.48, no.1, pp.113-117, 2003
(pdf-file)
Recently submitted and working papers
- G. Fanizza and R.Nagamune,
``Spectral Estimation by Least-squares Optimization based on Rational
Covariance Estimation,''
Provisionally accepted for publication, Automatica
- R.Nagamune, X.Huang and R.Horowitz,
``Robust Control Synthesis Techniques for Multirate and Multi-sensing
Track-following Servo Systems in HDDs,''
Provisionally accepted for publication, ASME Journal of Dynamic Systems,
Measurement and Control
- G. Fanizza, J. Karlsson, A. Lindquist, and R.Nagamune,
``Interpretation of Passivity Preserving Model Reduction by Krylov
Projection in the context of Analytic Interpolation with Degree
Constraint,''
Submitted to a conference
Book chapter
- R.Nagamune and A.Lindquist,
``Sensitivity shaping in feedback control and analytic interpolation
theory,''
in a book "Optimal Control and Partial Differential Equations" (In
honour of Professor Alain Bensoussan's 60th Birthday) Edited by
J.L.Menaldi, E.Rofman and A.Sulem, IOS Press, Ohmsha, 2001, pp.404-413
(also Technical report TRITA/MAT-00-OS17 in KTH)
Refereed international conference papers
- G. Fanizza and R.Nagamune,
``Spectral Estimation by Numerical Optimization based on Rational
Covariance Estimation,''
to appear in the proceedings of 17th
International Symposium on Mathematical Theory of Networks and Systems
(MTNS2006)
- J.Choi, R.Nagamune and R.Horowitz,
``Multiple Robust Controller Design based on Parameter Dependent
Lyapunov Functions,''
to appear in the proceedings of 17th
International Symposium on Mathematical Theory of Networks and Systems
(MTNS2006)
- R.Nagamune, X.Huang and R.Horowitz,
``Robust H2 Synthesis for Dual-stage Multi-sensing Track-following
Servo Systems in HDDs,''
to appear in the proceedings of 2006 American Control Conference
- X.Huang, R.Nagamune and R.Horowitz,
``A Comparison of Multirate Robust Track-following Control Synthesis
Techniques for Dual-stage and
Multi-sensing Servo Systems in Hard Disk Drives,''
to appear in the proceedings of 2006 American Control Conference
- J.Choi, R.Nagamune and R.Horowitz,
``Synthesis of Multiple Robust Controllers for Parametric Uncertain
LTI Systems,''
to appear in the proceedings of 2006 American Control Conference
- R.Nagamune, X.Huang and R.Horowitz
``Multirate track-following control with robust stability for a
dual-stage multi-sensing servo system in HDDs,''
in the proceeding of the 44th IEEE Conference on Decision
and Control (CDC05), 2005, pp. 3886-3891
- R.Nagamune and A.Blomqvist
``Sensitivity shaping with degree constraint by nonlinear least-square
optimization,''
in the proceeding of the 16th IFAC World Congress in Prague, Czech
Republic, 2005
- X.Huang, R.Nagamune, R.Horowitz and Y.Li
``Track-following control with active vibration damping and
compensation of Dual-stage servo system,''
in the proceeding of 2004 American Control Conference (ACC04)
- A.Blomqvist, G.Fanizza and R.Nagamune,
``Computation of bounded degree Nevanlinna-Pick interpolants by
solving nonlinear equations,''
in the proceeding of
the 42nd IEEE Conference on Decision and Control, pp. 4511-4516
- A.Blomqvist and R.Nagamune,
``An Extension of a Nevanlinna-Pick Interpolation Solver to Cases
Including Derivative Constraints,''
in the proceeding of
the 41st IEEE Conference on Decision and Control, pp. 2552-2557
- R.Nagamune,
``Simultaneous robust regulation and robust stabilization with degree
constraint,''
in the proceeding (CD-ROM) of 15th
International Symposium on Mathematical Theory of Networks and
Systems (MTNS2002), University of Notre Dame, 2002
- R.Nagamune,
``A robust solver using a continuation method for Nevanlinna-Pick
interpolation with degree constraint,''
in the proceeding of 40th Conference on Decision and Control (CDC01)
in Orlando, Florida, pp. 1119-1124
(ps-file)
- R.Nagamune,
``Closed-loop Shaping by Analytic Functions with a Bounded Degree,''
in the proceeding of European Control Conference 2001 (ECC01) in Porto,
Portugal, pp. 722-726
(ps-file)
- R.Nagamune,
``Sensitivity Reduction for SISO Systems Using the Nevanlinna-Pick
Interpolation with Degree Constraint,''
in the proceedings of MTNS 2000, Perpignan, France
(ps-file)
- S.Yamamoto, M.Kimura, and R.Nagamune,
``Identification of a state-space model set presuming robust
performance control,''
6th International Conference on Control, Automation, Robotics and
Vision, TA3.4-160 (Singapore) December 2000
- R.Nagamune and S.Yamamoto,
``Model Set Validation and Update for
Time-varying SISO Systems,''
in the preprint of 1998 American
Control Conference in Philadelphia, USA, pp.2361--2365
(ps-file)
- R.Nagamune, S.Yamamoto and H.Kimura,
``Identification of the
Smallest Unfalsified Model Set with both Parametric and
Unstructured Uncertainty,''
in the preprint of the 11th IFAC Symposium
on System Identification (SYSID '97) in Kitakyushu, Japan,
vol.1, pp.75--80, 1997
- R.Nagamune and H.Kimura,
``Model Set Identification Based on
Euclidean Norm,''
in the preprint of the 13th IFAC World Congress
in San Francisco, vol.I, pp.139--144, 1996 (refereed)
National journal papers
- R.Nagamune,
``Robust control design based on analytic interpolation theory with
degree constraint,''
Journal of the Institute of Systems, Control and Information
Engineers, vol.48, no.8, pp.310-316, 2004 (Expository, In Japanese)
- S.Yamamoto, M.Kimura and R.Nagamune,
``Identification of a State-space Model Set Taking
Stabilizing State Feedback into Consideration,''
SICE, vol.35, no.2, pp.213-220, 1999 (In Japanese)
- R.Nagamune and S.Yamamoto,
``An Identification Method for a State Space Model Set with
Time-Varying Parametric Uncertainties by using the Subspace Method,''
SICE, vol.35, no.6, pp.741-747, 1999 (In Japanese)
- S.Yamamoto, M.Kimura and R.Nagamune,
``Identification of a State-space Model Set presuming
the Existence of Robust Performance Control,''
ISCIE, vol.12, no.7, pp.444-446, 1999 (In Japanese)
- R.Nagamune, S.Yamamoto and H.Kimura,
``Identification and
Validation/Update for Smallest Model Sets of Transfer Functions
with Parametric Uncertainties,''
SICE, vol.34, no.8, pp.992--997 (In Japanese)
National conference papers
- A.Blomqvist and R.Nagamune,
``A new solver for degree constrained Nevanlinna-Pick interpolation
including derivative constraints,''
in the proceeding of Reglermote (regulation meeting) 2002, Linkoping,
Sweden, pp 25-30
- R.Nagamune,
``A New Approach to Shaping of the Sensitivity Function,''
in the proceeding of Reglermote (regulation meeting) 2000, Uppsala,
Sweden, pp 67-72
- R.Nagamune and S.Yamamoto,
``Model Validation and Update for
Transfer Function Sets,''
in the proceedings of the 41st Annual
Conference of the Institute of Systems, Control and Information
Engineers (SCI'97) in Osaka, Japan, pp.7--8 1997 (In Japanese)
- S.Yamamoto, M.Kimura and R.Nagamune,
``An identification
algorithm for a state-space model set taking into consideration
stabilizing state feedback control''
in the preprints
of the 26th SICE Symposium on Control theory in Chiba, Japan,
pp.277--280, 1997 (In Japanese)
- R.Nagamune and S.Yamamoto,
``Identification of a
state space model set based on the subspace method,''
in the preprints of the 36th SICE Annual Conference (SICE'97) in
Tokushima, Japan, pp.757-758, 1997 (In Japanese)
- R.Nagamune and H.Kimura,
``Identification of the Smallest
Model Set based on
Euclidean Norm,''
in the preprints of the 24th SICE Symposium on
Control theory in Kariya, Japan, pp.369--372, 1995 (In Japanese)
Technical reports
- G. Fanizza and R.Nagamune,
``Spectral Estimation by Least-squares Optimization based on Rational
Covariance Estimation,''
TRITA/MAT-06-OS-02, Royal Institute of Technology
(pdf-file)
- X.Huang, R.Nagamune and R.Horowitz,
``A Comparison of Multirate Robust Track-following Control Synthesis
Techniques for Dual-stage and
Multi-sensing Servo Systems in Hard Disk Drives,''
CML Reserach Report, Department of Mechanical Engineering, University
of California at Berkeley,
November 2005
- R.Nagamune, X.Huang and R.Horowitz
``Robust Control Synthesis Techniques for Multirate and Multi-sensing
Track-following Servo Systems in HDDs,''
CML Reserach Report, Department of Mechanical Engineering, University
of California at Berkeley,
August 2005
- R.Nagamune, X.Huang and R.Horowitz
``Multirate track-following control with robust stability for a
dual-stage multi-sensing servo system in HDDs,''
CML Reserach Report, Department of Mechanical Engineering, University
of California at Berkeley, March 2005
- R.Nagamune, X.Huang and R.Horowitz
``Robust track-follwoing for dual-stage servo systems by sensitivity
shaping with degree constraint,''
CML Reserach Report, Department of Mechanical Engineering, University
of California at Berkeley, December 2004
- A.Blomqvist, A.Lindquist and R.Nagamune,
``Matrix-valued Nevanlinna-Pick interpolation with complexity
constraint: An optimization approach,''
TRITA/MAT-02-OS13, Royal Institute of Technology (also in preprint
series at Institut
Mittag-Leffler (Djursholm, Sweden))
- A.Blomqvist, G.Fanizza and R.Nagamune,
``Computation of bounded Nevanlinna-Pick interpolants by
solving nonlinear equations,''
in preprint series at Institut Mittag-Leffler (Djursholm, Sweden)
- J.Malinen and R.Nagamune,
``On the geometry of the Hermite-Fej{\'e}r interpolation problem
through conservative realizations''
in preprint series at Institut Mittag-Leffler (Djursholm, Sweden)
- R.Nagamune and A.Lindquist,
``Sensitivity shaping in feedback control and analytic
interpolation theory,''
TRITA/MAT-00-OS17, Royal Institute of Technology
- A.Blomqvist and R.Nagamune,
``Optimization-based computation of analytic interpolants of
bounded complexity,''
TRITA/MAT-04-OS03,
Royal Institute of Technology
- R.Nagamune and A.Blomqvist,
``Sensitivity shaping with degree constraint by nonlinear
least-squares optimization,''
TRITA/MAT-04-OS02,
Royal Institute of Technology
Course material
- P.Ogren, R.Nagamune and U.Jonsson,
Exercise Note on Optimal Control Theory,
Division of Optimization and Systems
Theory, Royal Institute of Technology, 2003
- R.Nagamune and X.Hu,
Exercise Note on Geometric Systems Theory,
Division of Optimization and Systems Theory,
Royal Institute of Technology, 2002
Theses
- Doctoral thesis (2002): Royal Institute of Technology, Sweden
``Robust Control with Complexity Constraint: A Nevanlinna-Pick
Interpolation Approach''(Abstract)
(advisor: Prof. Anders
Lindquist )
- Master thesis (1997): Osaka University, Japan
``The Smallest Model Set: A Parameter
Bounding Approach to System Identification''
(advisor:
Dr. Shigeru Yamamoto )
- Bachelor thesis (1995): Osaka University, Japan
``Identification of the Uncertainty in
the System'' (in Japanese)
(advisor:
Prof. Hidenori
Kimura )