Title :
Analysis of precision and design of sliding mode observers
Author_Institution :
Honeywell and Univ. of Calgary, Canada
Abstract :
Nominal precision of state observation and bandwidth of sliding mode (SM) observers are analyzed through the frequency-domain method. The previously developed approach to analysis of SM observers as relay feedback-feedforward systems is used and further extended to analysis of effects of design parameter change on observer performance. An example of SM observer design for estimation of DC motor speed from the measurements of armature current is considered in the paper. The input-output properties of observer dynamics are analyzed with the use of the locus of a perturbed relay system (LPRS) method.
Keywords :
DC motors; electric current control; electric current measurement; feedback; feedforward; observers; relay control; variable structure systems; velocity control; velocity measurement; DC motor speed estimation; armature current; locus of a perturbed relay system method; nominal precision; observer dynamics; relay feedback-feedforward system; sliding mode observers; state observation; Algorithm design and analysis; Control systems; DC motors; Frequency domain analysis; Observers; Performance analysis; Relays; Samarium; Sliding mode control; State estimation;
Conference_Titel :
Control Applications, (CCA) & Intelligent Control, (ISIC), 2009 IEEE
Conference_Location :
St. Petersburg
Print_ISBN :
978-1-4244-4601-8
Electronic_ISBN :
978-1-4244-4602-5
DOI :
10.1109/CCA.2009.5281151
