In this paper a two-degree-of-freedom (2DOF) IMC structure is considered for integrating process with deadtime to achieve improved load-disturbance response along with the set-point response. Set-point controller is designed considering desired speed of response of the closed-loop system. The load-disturbance controller is designed through direct synthesis approach and both the controllers are ...

We propose a geometric characterization of the fixed poles for the disturbance-rejection problem by static state feedback and, in the particular case when the system is controllable, a structural characterization in terms of finite invariant zeros of certain open-loop subsystems. We propose solutions through which all the other poles can be freely assigned.

This paper reports a novel micromachined gyroscope design with inherent disturbance-rejection capabilities. The proposed approach is based on increasing the degrees-of-freedom (DOF) of the oscillatory system by the use of two independently oscillating proof masses. Utilizing dynamical ampli cation in the 4-DOF system, inherent disturbance rejection is achieved, providing reduced sensitivity to ...

A set-valued observer (also called guaranteed state estimator) produces a set of possible states based on output measurements and models of exogenous signals. In this paper, we consider the guaranteed state estimation problem for linear timevarying systems with a priori magnitude bounds on exogenous signals. We provide an algorithm to propagate the set of possible states based on output measure...

In this paper, active disturbance rejection control (ADRC) approach is used to stabilize a 2×2 system of first-order linear hyperbolic partial differential equations (PDEs) subject to a boundary input disturbance. Disturbance attenuation is achieved with the designed controller, and the resulting closed-loop control system admits a unique solution, which could tend to any arbitrary vicinity of ...

Vibration suppression and disturbance rejection control in torsional system is an important issue in the future motion control. Resonance ratio control is one of the most effective strategies, but the disturbance should be estimated much faster than the resonance frequency. Too fast disturbance observer causes implementation problem. To solve this problem, we propose a novel technique called "s...

A two-degree-of-freedom Smith control scheme is proposed for improved disturbance rejection for stable delay processes. The resulting set-point and disturbance responses can be tuned by two controllers separately. A novel disturbance controller design is presented with easy tuning and greatly improved performance. The internal and robust stability issues are discussed. Examples are provided for...