93XX 


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

93Cxx 

Control systems 


93C05 
Linear systems 


93C10 
Nonlinear systems 


93C15 
Systems governed by ordinary differential equations [See also 34H05] 


93C20 
Systems governed by partial differential equations 


93C23 
Systems governed by functionaldifferential equations [See also 34K35] 


93C25 
Systems in abstract spaces 


93C30 
Systems governed by functional relations other than differential equations (such as hybrid and switching systems) 


93C35 
Multivariable systems 


93C40 
Adaptive control 


93C41 
Problems with incomplete information 


93C42 
Fuzzy control systems 


93C55 
Discretetime systems 


93C57 
Sampleddata systems 


93C62 
Digital systems 


93C65 
Discrete event systems 


93C70 
Timescale analysis and singular perturbations 


93C73 
Perturbations 


93C80 
Frequencyresponse methods 


93C83 
Control problems involving computers (process control, etc.) 


93C85 
Automated systems (robots, etc.) [See also 68T40, 70B15, 70Q05] 


93C95 
Applications 


93C99 
None of the above, but in this section 