C. D. Johnson, Ph.D.

Distinguished Professor
Electrical & Computer Engineering

Education

Biography

For the past 36 years I have been actively involved in the development of new approaches to the design of high-performance stabilization, set-point regulation, servo-tracking, guidance laws and adaptive control systems for rockets, missiles and other dynamical systems which must operate in environments with uncertain, persistently-acting disturbances and parameter-variations. These research efforts have led to the development of a wide variety of new control techniques including the theories of: subspace-stabilization control, disturbance-accommodating control, Chebyshev-minimax control, optimal bang-bang control, optimal linear-saturating control, optimal disturbance-utilizing control, linear adaptive control, inter-sample control for discrete-time systems, “smart” active-control of vibrations and structures, inverse-system realization methods, new methods for real-time system identification and deconvolution, singular-solution methods in optimal control, optimal real-time allocation of scarce resources, and exact time-varying eigenvalue methods for linear time-varying dynamical systems

Research Expertise

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Honors & Awards

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Recent Publications

Johnson, C.D., “A Canonical Form for the Formulation and Solution of Multivariable, Optimal Energy-Harvesting Problems,” Proceedings of the IEEE 2012 Southeastern Symposium on System Theory, University of North Florida, Jacksonville, FL, March 11-13, 2012, pp. 1-6.  Peer reviewed by an IEEE Approved Process; available @ IEEE Xplore website.

Hunt, Ashley and C. D. Johnson, “Continuation of a Catalog of Explicit, Closed-Form, Symbolic Expressions for the Dual-Kernel, Matric Convolution-Integral for some Simple Generic Examples in Discrete/Continuous Control Theory,” Proceedings of the IEEE 2012 Southeastern Symposium on System Theory, University of North Florida, Jacksonville, FL, March 11-13, 2012, pp. 34-39.  Peer reviewed by an IEEE Approved Process; available @ IEEE Xplore website.

Johnson, C.D. "On the Cone (x) of Realizable State-Velocities  for Controlled Dynamical Systems," Proceedings of the 2011 IEEE SouthEastCon Conference, Nashville, TN., March, 2011.

Hall, David and C. D. Johnson, " Performance of Bumpless and Smooth-Bumpless D/C-Type Discrete-Time Controllers," Proceedings of the 43rd. IEEE Southeastern Symposium on System Theory, Auburn University, Auburn, AL; March, 2011; peer-reviewed by IEEE-approved process; available @ the IEEE Xplore Web Site.

Johnson, C.D. “On the Stability-Robustness of Linear Dynamical Systems,” Proc. of the 42nd IEEE Southeastern Symposium on System Theory, Univ. of Texas at Tyler, Tyler, TX; March 7,8,9, 2010; pp. 15-18; Peer Reviewed by IEEE Approved Organization.

Parker, Glenn and C.D. Johnson, “Use of Reduced-Order Observers for Feedback Control in Large Wind Turbines May Reduce Fatigue Damage from Excitement of Flexible Modes,” Proc. of the 42nd IEEE Southeastern Symposium on System Theory; Univ. of Texas at Tyler, Tyler, TX; March 7,8,9, 2010; pp. 85-89; Peer Reviewed by IEEE Approved Organization.

Johnson, C. D., “Computation of a Matric Convolution-Integral that Arises in Discrete-Time DAC Theory, and Similarly in Discrete/Continuous (D/C) Control Theory,”  Proc. 41st Southeastern Symposium on System Theory,University of Tennessee Space Institute Tullahoma, TN, USA, March 15-17, 2009, pp. 291-294. Peer reviewed.

Hunt, A., C. D. Johnson, “On the Dual-Kernel, Matric Convolution Integral in Discrete / Continuous Control Theory; Exact, Explicit, Closed-Form Expressions for Some Simple Cases,” Proc. 41st Southeastern Symposium on System Theory, University of Tennessee Space Institute Tullahoma, TN, USA, March 15-17, 2009,  pp. 295-299.  Peer reviewed.

Carroll, Y., C. D. Johnson “Optimal Sequential-Decisions in the Presence of Exogenous-Inputs with Structured Variations,”  Proc. 41st Southeastern Symposium on System Theory, University of Tennessee Space Institute Tullahoma, TN, USA, March 15-17, 2009,  pp. 300-305.  Peer reviewed.

Hannan, M. R., C. D. Johnson, “Simulation and Animation of Coffee Sloshing in a Cup;
A Testbed for Control Design,”  Proc. 41st Southeastern Symposium on System Theory, University of Tennessee Space Institute Tullahoma, TN, USA, March 15-17, 2009, pp.317-318.  Peer reviewed.

Parker, G. A., C. D. Johnson, “Decoupling Linear Dynamical Systems Using Disturbance
Accommodation Control Theory,”  Proc. 41st Southeastern Symposium on System Theory, University of Tennessee Space Institute Tullahoma, TN, USA, March 15-17, 2009,  pp.199-204.  Peer reviewed.

Parker, G. A., C. D. Johnson, “Improved Speed Regulation and Mitigation of Drive-Train Torsion Fatigue in Flexible Wind Turbines, Using Disturbance Utilization Control: Part One,” Proc. 41st Southeastern Symposium on System Theory, University of Tennessee  Space Institute Tullahoma, TN, USA, March 15-17, 2009,  pp. 171-176. Peer reviewed.

Parker, G. A., C. D. Johnson, “Improved Speed Regulation and Mitigation of Drive-Train Torsion Fatigue in Flexible Wind Turbines, Using Disturbance Utilization Control: Part Two,” Proc. 41st Southeastern Symposium on System Theory, University of Tennessee Space Institute Tullahoma, TN, USA, March 15-17, 2009,  pp. 177-183.  Peer reviewed.

Nixon, D. D., C. D. Johnson, “Numerical Evaluation of the “Dual-Kernel, Counter-flow” Matric Convolution Integral that Arises in Discrete/Continuous (D/C) Control Theory,” Proc. 41st Southeastern Symposium on System Theory, University of Tennessee Space  Institute Tullahoma, TN, USA, March 15-17, 2009,  pp. 285-290.  Peer reviewed.

Johnson, C.D.  “A MIMO Transfer-Function Approach to the Design of “Bumpless” Type and “Smooth-Bumpless” Type Discrete/Continuous (D/C) Controllers”, Proc. 40th IEEE Southeastern Symposium on System Theory,Univ. of New Orleans, New Orleans, LA, March 2008. 

Johnson, C.D.  “Real-Time Disturbance-Observers; Origin and Evolution of the Idea; Part 1: The Early Years”,Proc. 40th IEEE Southeastern Symposium on System Theory, Univ. of New Orleans, New Orleans, LA, March 2008.