For state estimation problem about a kind of uncertain linear systems, a new satisfactory estimator is constructed with satisfactory control theory, which can guarantee that estimation error system with bounded perturbed model parameter is under constraints of regional pole index, estimation error stable variance index and H-infinite index.

Starting from two control targets-regional pole placement and guaranteed cost control,the existing conditions for robust feedback controllers were enhanced by using the linear matrix inequalities(LMI) approach.

This paper presents the design of H_2/H_∞mixed control for speed control system of hydroelectric generator under region pole constraint.

The paper presents the design of H2/H∞ mixed control for power system stabilizer under region pole constraint by linear matrix inequality(LMI) technique.

Robust fault-tolerant control for uncertain continuous systems based on regional pole assignment;

LMI (linear matrix inequalities) method in recent years has become the main method of multi-objective H_2/H_∞ optimal control with regional pole assignment; but, in our opinion, it is not efficient and, more importantly, it gives results that are too conservative.

Brief works on control objectives with regional pole assignment, such as optimal control, robustness, H_2 performance, H_∞ performance, etc, are listed.

To prevent lightly damped pole zero cancellation,regional pole constraints are a.

Aiming at the characteristics of the computational complexity and design conservation of the H∞ robust control synthesis with regional pole constraints which used the deterministic algorithms for parameter uncertainty system,a novel controller design method based on the probabilistic robustness analysis method was proposed.

Based on a more practical and general fault model of the actuator,a sufficient condition about reliable tracking con- trol is obtained by the region pole assignment theory.