Showing papers in "Systems & Control Letters in 1994"

TL;DR: In this article, a parameter-dependent control problem for linear parametrically varying (LPV) systems is presented, where sufficient conditions are given that guarantee an LPV system is exponentially stable and achieves an induced L 2 -norm performance objective from the disturbance to error signals.

TL;DR: In this article, it was shown that smooth global (or even semi-global) stabilizability and complete uniform observability are sufficient properties to guarantee semi global stabilisation by dynamic output feedback for continuous-time nonlinear systems.

TL;DR: In this article, it was shown that global complete observability and global stabilizability by state feedback are not sufficient to guarantee global stabilisation by dynamic output feedback, and that a main obstruction is related to "unboundedness unobservability".

TL;DR: In this paper, a Riccati equation approach is proposed to solve the problem of Kalman filter design for uncertain systems and a suboptimal covariance upper bound can be computed by a convex optimization.

TL;DR: In this paper, it was shown that any nonlinear system dot x(t) = f(x(t), t) in Rd can be stabilized by Brownian motion provided |f{hook}(x,t)| ≤ K|x| for some K > 0.

TL;DR: In this article, the authors propose a method to characterize how large the deviation of the delay time can be compared to the nominal zero value, such that the system still preserves its asymptotic stability.

TL;DR: In this article, the authors consider the design of a stabilizing static output feedback gain which keeps linear quadratic (LQ) performance index less than a specified number (the LQ suboptimal controller).

TL;DR: In this paper, the L2-gain almost disturbance decoupling problem for SISO nonlinear systems is formulated and sufficient conditions are identified for the existence of a parametrized state feedback controller such that the L 2-gain from disturbances to output can be made arbitrarily small by increasing its gain.

TL;DR: In this paper, the authors present a new methodology for constructing feedback control laws for a symmetric spacecraft with two control torques supplied by gas jet actuators, based on a new formulation for the attitude kinematics.

TL;DR: In this paper, the authors present an algorithm for the stabilization of a class of discrete-time uncertain systems suffering from uncertainty of the norm bounded time varying type by solving a certain discrete Riccati equation.

TL;DR: In this article, a technique for constructing a class of quadratic Lyapunov functions for exponentially stable periodic orbits is presented, facilitated by the use of a special set of local coordinates that serve to highlight the tangential and transverse dynamics of the system.

TL;DR: In this paper, the authors present a globally stable nonlinear dynamic output feedback controller for torque tracking of induction motors which does not rely on state reconstruction ideas, and the control law is globally defined, even in startup.

TL;DR: In this paper, the nonlinear observer normal form is generalized to a block triangular observer normal, which can be interpreted as a series connection of subsystems in observer form, and sufficient conditions for the existence of state transformations into this normal form are given.

TL;DR: In this article, the authors introduced the notion of absolute stabilizability and showed that an uncertain system is stabilizable if and only if there exists a solution to a corresponding H ∞ control problem.

TL;DR: In this article, a discrete-time sliding mode controller which is robust against slowly varying perturbations is presented, where no knowledge of the upper bounds of the perturbation is required.

TL;DR: In this article, the authors discuss the necessity of the existence of solutions of the Hamilton-Jacobi inequality, which determines the output-injection gain, and show that it is the case.

TL;DR: In this article, a generalization of the Kalman-Yacubovitch-Popov (KYP) lemma for discrete-time bilinear passive systems is presented.

TL;DR: In this article, the authors give sufficient conditions that guarantee the existence of the receding horizon control and the stability of the feedback system in a general nonlinear discrete-time system.

TL;DR: In this article, a stochastic model of a Markovian jump process with finite state space, feeding the parameters of a linear diffusion process x, is considered, where the processes y and z observe linearly and separately x and θ in independent white noises.

TL;DR: In this article, a bilinear control is used as a force to make the Kirchhoff plate close to a desired profile taking into the account, a quadratic cost of control.

TL;DR: In this article, a generalized notion of structured singular value is introduced and studied specifically in the case when a certain matrix is of rank one, and several stability conditions are derived readily from solution of the structured singular values presented in Part 1, which either extend or coincide with previously known results.

TL;DR: In this article, the authors obtain a characterization of observability for a class of nonlinear systems which appear in neural networks research, and show that they are observable in the presence of neural networks.

TL;DR: In this paper, variable structure control of stochastic (SVSC) systems with complete and incomplete state information is proposed and the corresponding variable-structured control strategies are established.

TL;DR: In this article, the structural constraints of well-known structural constraints for the sliding mode feedforward state reconstruction problem in linear, time-invariant, perturbed systems are critically reexamined from a new perspective, and it is shown that a matched canonical state space realization exists which always allows discontinuous asymptotic stabilization of the observation error dynamics.

TL;DR: In this article, the authors present a methodology for designing mixed l 1 / H ∞ controllers, which allow for minimizing the worst-case peak output due to a persistent disturbance, while satisfying an H − ∞ norm constraint upon some closed-loop transfer function of interest.

TL;DR: Evidence is given that optimal schedules do not decrease monotonically toward zero, and are in fact periodic or warming, and this results open up many interesting research issues, including the BSF analysis of simulated annealing and how to best apply hill-climbing to difficult global optimizations.

TL;DR: In this article, a generalized framework of structured singular values is introduced and the stability problems for uncertain polynomials may be studied in this framework, specifically for the case when a certain matrix representing the "nominal system" is of rank one.

TL;DR: In this paper, the stabilization of semilinear parabolic distributed systems by means of boundary controls is studied, and a sufficient condition for stabilization is derived by making use of the modified Gronwall's inequality developed in this paper.

TL;DR: In this article, a linear state feedback subject to saturation is proposed to stabilize multi-input linear systems with eigenvalues in the closed left-half comlex plane, and an algorithm to calculate an e-parametrized family of state feedback gain matrices that semiglobally stabilize the system is proposed.