Artículos de revistas
LINEAR-QUADRATIC SUBOPTIMAL CONTROL WITH STATIC OUTPUT-FEEDBACK
Registro en:
Systems & Control Letters. Elsevier Science Bv, v. 23, n. 6, n. 421, n. 430, 1994.
0167-6911
WOS:A1994PW11100004
10.1016/0167-6911(94)90096-5
Autor
IWASAKI, T
SKELTON, RE
Institución
Resumen
This paper considers the design of a stabilizing static output feedback gain which keeps the linear quadratic (LQ) performance index less than a specified number (we call this an 'LQ suboptimal controller'). Existence of such a controller is shown to be equivalent to the existence of a positive-definite matrix P such that P satisfies two linear matrix inequalities (LMIs) while P-1 satisfies another LMI. All LQ suboptimal controllers are explicitly parameterized by the freedom in the choice of the positive-definite matrix P satisfying the LMIs, and an arbitrary positive scalar and an arbitrary matrix of fixed dimension with a norm bound. A modified version of the min/max algorithm is given to find a positive-definite solution P to the LMIs. 23 6 421 430