93XX 


Systems theory; control {For optimal control, see 49XX} 

93Bxx 

Controllability, observability, and system structure 


93B03 
Attainable sets 


93B05 
Controllability 


93B07 
Observability 


93B10 
Canonical structure 


93B11 
System structure simplification 


93B12 
Variable structure systems 


93B15 
Realizations from inputoutput data 


93B17 
Transformations 


93B18 
Linearizations 


93B20 
Minimal systems representations 


93B25 
Algebraic methods 


93B27 
Geometric methods 


93B28 
Operatortheoretic methods [See also 47A48, 47A57, 47B35, 47N70] 


93B30 
System identification 


93B35 
Sensitivity (robustness) 


93B36 
$H^\infty$control 


93B40 
Computational methods 


93B50 
Synthesis problems 


93B51 
Design techniques (robust design, computeraided design, etc.) 


93B52 
Feedback control 


93B55 
Pole and zero placement problems 


93B60 
Eigenvalue problems 


93B99 
None of the above, but in this section 