We consider boundary output feedback stabilization for a multi-dimensional Kirchhoff plate with boundary observation suffered from a general external disturbance. We adopt for the first time the active disturbance rejection control approach to stabilization of multi-dimensional partial differential equations under corrupted output feedback. In terms of this approach, the disturbance is estimate...

According to the serious decoupling, uncertainty, easily disturbed and nonlinear characters of the gas mixture of butterfly valve string couplets system, an ADRC static decoupling technology and the dynamic decoupling method based on extended state observer (ESO) were proposed. In this method, coupling from other input, parameters time-varying and external disturbances are all regarded as a tot...

this paper employs nonlinear disturbance observer (ndo) for robust trajectory-free nonlinear model predictive control (nmpc) of biped robots. the ndo is used to reject the additive disturbances caused by parameter uncertainties, unmodeled dynamics, joints friction, and external slow-varying forces acting on the biped robots. in contrary to the slow-varying disturbances, handling sudden pushing ...

If tree-ring series from different trees are merged to a chronology, in order to for example make inferences on climate, these series must be checked for consistency. Statistical parameters, including the Gleichläufigkeit (GL = coefficient of agreement) and standard t value have been applied for this purpose and are usually combined to boost the informative value. We tested the hypothesis that ...

This paper is concerned with the robust H∞ finite-time control for discrete delayed nonlinear systems with Markovian jumps and external disturbances. It is usually assumed that the disturbance affects the system states and outputs with the same influence degree of 100%, which is not evident enough to reflect the situation where the disturbance affects these two parts by different influence degr...

The authors describe a rare group of symptoms, resulting in progressive external ophthalmoplegia, retinal pigment epithelial dysfunction and cardiac conduction disturbance. The illness belongs to the group of mitochondrial cytopathies. The case extends over the diagnostic possibilities, with special attention on electromyographic diagnostic, clinical symptoms, pathomechanism of the disease, and...

We propose a boundary output feedback control law for a one-dimensional Euler-Bernoulli beam equation with general external disturbance entering the control end. A Galerkin approximation scheme is constructed to show the existence of solution to the closed-loop system. The exponential stability of the closed-loop system is obtained by the Lyapunov functional method. Numerical simulations are pr...

A novel criterion for system identification is proposed. It is based on calculations of the total quadratic error between the derivative of the plant data and the derivative of the model output. This criterion produces much better models when the experimental data are corrupted by unmeasured external disturbance. Copyright  2004 IFAC

The details of the computation of,a quantity that arises in the analysis of the coupling between an external disturbance and an instability wave on a free shear layer that eminates from a smooth surface are given. This quantity entails a Cauchy principal value integral whose integrand is itself given in terms of Cauchy principal value integrals. 0 1985 Academic Press, Inc.

The problems of attitude stabilization and disturbance torque attenuation for a small spacecraft using magnetic actuators is considered and a solution to the problem in terms of optimal periodic control is proposed, based on an optimal estimation and compensation scheme for external disturbances for linear time-periodic systems.