This paper aims at designing observer for single-input-single-output (SISO) linear finite-dimensional systems corrupted by general disturbances. A new observer, referred to as extended dynamics (EDO), is proposed estimate both state and disturbance simultaneously. The only assumption the design that plant with unknown observable. treated combination of high-gain internal model contained in dyna...

The aim was to assess patterns of plant diversity in response to elevation and disturbance in a tropical mountain. The study area was located in north-central portion of the Eastern Cordillera of the Ecuadorian Andes, on a road from 1,150 m a.s.l. (Osayacu) to 4,000 (Papallacta). Along a mountain road spanning a wide altitudinal gradient, at 20 elevations we sampled three plots: one at the road...

When the linear active disturbance rejection control (LADRC) is applied for voltage-controlled inverter, discrete period and measurement noise limits observer bandwidth, which affects anti-disturbance performance of system. This results in a poor ability to deal with output voltage fluctuation under load switch. In this paper, novel LADRC strategy based on known compensation proposed inverters....

The Sj-test proposed by Noether [7] is a sequentialtest of the hypothesis of randomness against the alter-native of linear trend, which can be expressed as thehypothesis that the joint distribution of xl, x2, ••• , lhis given byifi=lThe Sj-test is carried out by comparing Xi with Xi+j' forfixed j ~ o, and using the sequential probability ratiotest of the hypo...

The Sj-test proposed by Noether [7] is a sequentialtest of the hypothesis of randomness against the alter-native of linear trend, which can be expressed as thehypothesis that the joint distribution of xl, x2, ••• , lhis given byifi=lThe Sj-test is carried out by comparing Xi with Xi+j' forfixed j ~ o, and using the sequential probability ratiotest of the hypo...

This paper proposes a control parametrization under Model Predictive Controller (MPC) framework for constrained linear discrete time systems with bounded additive disturbances. The proposed approach has the same feasible domain as that obtained from parametrization over the family of time-varying state feedback policies. In addition, the closed-loop system is stable in the sense that the state ...

We consider performance analysis of interconnected linear dynamical networks subject to external stochastic disturbances. For stable linear networks, we define scalar performance measures by considering weighted H2–norms of the underlying systems, which are defined from the disturbance input to a desired output. It is shown that the performance measure of a general stable linear network can be ...

Besides an overall increase in blood pressure, hemodialysis patients have marked disturbance in interdialytic ambulatory blood pressure pattern that is characterized by blunted circadian amplitude and a steady rise in blood pressure between dialysis treatments. The pathophysiology of this abnormal blood pressure profile is poorly understood. We hypothesized that the circadian amplitude, the int...

A robust servo-system, based on a combination of linear robust control and sliding mode control have been proposed. This new control system can be said to be a nonlinear system (sliding mode control system) which has a inner loop of linear control (two-degree-of-freedom control). Due to this inner loop of linear control, a disturbance is strongly suppressed but not completely. Then, the outer l...

"Astructural approach to the disturbance decoupling problem of non-linear systems is introduced. For this purpose, in analogy to linear systems theory, a structural description of non-linear systems is defined. In associating a directed graph to such a system, two important system properties, the differential output rank and the structure at infinity, can be characterized in terms of inputoutpu...