IEEE TRANSACTIONS ON AUTOMATIC CONTROL Table of Contents - Volume 39, Number 3 - March, 1994 ___________________________________________________________________________ PAPERS Near-Optimal Nonholonomic Motion Planning for A System of Coupled Rigid Bodies ................ C. Fernandes, L. Gurvits, and Z. X. Li Multiscale Recursive Estimation, Data Fusion, and Regularization .........................K. C. Chou, A. S. Wilsky, and A. Benveniste Multiscale Systems, Kalman Filters, and Riccati Equations ..........................K. C. Chou, A. S. Wilsky, and R. Nikoukhah An Autonomous Vision-Based Mobile Robot .. E. T. Baumgartner and S. B. Skaar The Solution of Diagonal Decoupling Problem by Dynamic Output Feedback and Constant Precompensator: The General Case ............. V. Eldem Control of Vector Discrete-Event Systems II - Controller Synthesis ............................................. Y. Li and W. M. Wonham ____________________________________________________________________________ Technical Notes and Correspondence Diverse Bounds for the Eigenvalues of the Continuous Algebraic Riccati Equation ....................................... N. Komaroff Fast Parallel Recursive Aggregation Methods for Simulation of Dynamical Systems .................. W. K. Tsai, G. Huang, and W. Lu System Characterization of Positive Real Conditions ................................ H. Weiss, Q. Wang, and J. L. Speyer Stochastic Monotonicity and Concavity Properties of Rate-Based Flow Control Mechanisms ..................................... K. C. Budka Stability Margin Evaluation for Uncertain Linear Systems ............................................ C. Gong and S. Thompson The Principle of Matching: Parctical Conditions for Systems with Inputs Restricted in Magnitude and Rate of Change .... N. K. Rutland Robust Stabiity of Polynomials with Multilinearly Dependent Ciefficient Perturbations ................... T. Yu-Ping, F. Chun-Bo, and X. Xin A Note on A Necessary Condition for Ouput Regulation ....................................................... P. Lucibello On Almost Sure Sample Stability of Nonlinear Stochastic Dynamic Systems ................................... Z. Y. Zhang and F. Kozin An Iterative Algorithm for Pole Placement by Output Feedback ............................... T. H. Lee, Q. G. Wang, and E. K. Koh On Identification of the Controlled Plants Described by the Hammerstein Systems .................................... L. Zi-Qiang Frequency Domain Tradeoffs in Loop Transfer Recovery for Multivariable Nonminimum Phase Discrete-Time Systems ... B. A. Leon de la Barra S. On Undershoot in SISO Systems .......................................... B. A. Leon de la Barra S. Delta-Operator Formulated Discrete-Time Approximation of Continuous-Time Systems ..... K. Premaratne, R. Salvi, N. R. Habib, and J. P. LeGall A Stability Criterion for Discrete Nonlinear Systems with Time Delayed Feedback ......................... X. Yang and Y. Stepanenko Review Tracking for Discrete-Time SISO Systems ............... M. E. Halpern On the Textured Iterative Algorithms for A Class of Tridiagonal Linear Equations ............................................... T.-S. Tang Solution Approximation in Infinite Horizon Linear Quadratic Control .................................. I. E. Schochetman and R. L. Simth Loop Transfer Recovery Design Using Biased and Unbiased Controllers ......................... L. Turan, D. L. Mingori, and G. C. Goodwin Comments on "Robust Adaptive Regulation with Minimal Prior Knowledge" ........................................................ H. F. Zhang Full-Order Observers for Linear Systems with Unknown Inputs .......................... M. Darouach, M. Zasadzinski, and S. J. Xu Robust Motion/Force Control of Mechanical Systems with Classical Nonholonomic Constraints ................ C.-Y. Su and Y. Stepanenko Stabilizing I-O Receding Horizon Control of CARMA Plants ............................................. L. Chisci and E. Mosca Extended Chandrasekhar Recursions ............... A. H. Sayed and T. Kailath On the Computation of Upper Convariance Bounds for Perturbed Linear Systems ........... P. Bolzern, P. Colaneri, and G.De Nicolao Least Absolute Values Estimation: Computational Aspects ..... E. D. Fiodorov Robust Stabilization and Robust Performance Using Model Reference Control and Modeling Error Compensation ............................... J. Sun, A. W. Olbrot and M. P. Polis The Kalman-Bucy Filter Accuracy in the Guaranteed Parameter Estimation Problem with Uncertain Statistics .................... A. I. Matasov Structural Properties of Optimal Production Controllers in Failure-Prone Manufacturing Systems ........................ J. Q. Hu and D. Xiang Computational Aspects of the Product-of-Exponentials Formula for Robot Kinematics ........................................ F. C. Park Force/Position Regulation of Compliant Robot Manipulators ........................ S. Chiaverini, B. Siciliano, and L. Villani Robust Stabilization: Some Extensions of the Gain Margin Maximization Problem ................................ A. W. Olbrot and M. Nikodem Multi-Channel Output Gain Margin Improvement Using Generalized Sampled-Data Hold Functions .............. C. Yang and P. T. Kabamba Analytic First and Second Derivatives for the Recursive Prediction Error Algorith's Log Likelihood Function .............. M. A. Hooker Absolute Stability of Systems with Parametric Uncertainty and Nonlinear Feedback ............................ H. J. Marquez and C. P. Diduch Convexity Properties of Polynomials with Assigned Root Location .................................... A. Tesi, A. Vicino and G. Zappa Explicit Characterization of All Feedback-Linearizing Controllers for A General Type Brushless DC Motor ...... J. J. Ha and C.-I. Kang Spectral and Inner-Outer Factorizations Through the Constrained Riccati Equation .......................................... M. Weiss Stability Analysis for Manufacturing Systems with Unreliable Machines and Random Inputs ........................ H.-F. Chen and Q.-Y. Tang The Discrete-Time Riccati Equation Related to the H\infty Control Problem .................... A. A. Stoorvogel and A. J. T. M. Weeren Structural Properties of Multirate Sampled-Data Systems .......... S. Longhi On Some LP Problems for Performance Evaluation of Timed Marked Graphs ................................ ....T. Yamada and S. Kataoka On the Novel Approach to the Design of Unknown Input Observers ........................................................ M. Darouach Comments on "The Attitude Control Problem" ................................... O.-E. Fjellstad and T. I. Fossen