| A Direct Method of Constructing H_2 Suboptimal Controllers - Discrete-Time Systems (2007) | |||||||||||||
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| For discrete-time systems, an H 2 suboptimal control problem is defined and analyzed. Then an algorithm called `H 2 suboptimal state feedback gain sequence' (H 2 SOSFGS) algorithm is developed. Rather than utilizing a `perturbation method' which is numerically stiff and computationally prohibitive, the H 2 SOSFGS algorithm utilizes a direct eigenvalue assignment method to come up with a sequence of H 2 suboptimal state feedback gains. Also, although the sequence of H 2 suboptimal state feedback gains constructed by the H 2 SOSFGS algorithm depends on a parameter ", the construction procedure itself does not require explicitly the value of the parameter ". Next, attention is focused on constructing a sequence of H 2 suboptimal estimator based measurement feedback controllers. Three different estimator structures, prediction, current, and reduced order estimators, are considered. For a given H 2 suboptimal state feedback gain, a sequence of estimator gains for any of the three considere... | |||||||||||||
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