DocumentCode
2129537
Title
Advantage of low complexity in digital controllers with finite wordlength
Author
Rabbath, C.A. ; Hori, N.
Author_Institution
Dept. of Mech. Eng., McGill Univ., Montreal, Que., Canada
fYear
2001
fDate
2001
Firstpage
146
Lastpage
151
Abstract
The paper shows the main advantage of certain low-complexity digital control strategies over techniques resulting in more complex control systems; that is, the superior level of performance when subjected to finite wordlength effects. Examples demonstrate the performance limitations associated with highly complex control laws and the benefits of using properly selected, simple control schemes when implemented with fixed- and floating-point arithmetic and restricted number of bits
Keywords
closed loop systems; computational complexity; continuous time systems; digital control; feedback; fixed point arithmetic; floating point arithmetic; sampled data systems; transfer functions; digital controllers; finite wordlength; fixed-point arithmetic; floating-point arithmetic; highly complex control laws; low complexity; performance limitations; Computational modeling; Control systems; Costs; Digital control; Finite wordlength effects; Mechanical engineering; Paper technology; Robot control; Sampling methods; Stability;
fLanguage
English
Publisher
ieee
Conference_Titel
SICE 2001. Proceedings of the 40th SICE Annual Conference. International Session Papers
Conference_Location
Nagoya
Print_ISBN
0-7803-7306-5
Type
conf
DOI
10.1109/SICE.2001.977823
Filename
977823
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