DocumentCode :
2911170
Title :
A generalized asymmetric play hysteresis operator for modeling hysteresis nonlinearities of smart actuators
Author :
Al Janaideh, Mohammad ; Su, Chun-Yi ; Rakheja, Subhash
Author_Institution :
Dept. of Mech. & Ind. Eng., Concordia Univ., Montreal, QC
fYear :
2008
fDate :
17-20 Dec. 2008
Firstpage :
240
Lastpage :
244
Abstract :
Smart actuators such as shape memory alloy actuators, magnetostrictive actuators, and piezoceramic actuators show different symmetric and asymmetric hysteresis loops. Shape memory alloy actuators and magnetostrictive actuators, as an example, exhibit saturated output at maximum and/or minimum input. In this paper, a generalized Prandtl-Ishlinskii model is formulated to characterize hysteresis nonlinearities of different smart actuators. In this model, a generalized asymmetric play hysteresis operator is proposed and integrated with a density function to characterize different asymmetric hysteresis loops of smart actuators. This modified play hysteresis operator shows the capability to generate minor and major hysteresis loops with varying slopes of ascending and descending input-output curve. Moreover, this operator exhibits saturated major and minor input-output relationships. The capability ability of the proposed model to characterize hysteresis loops of different smart actuators is demonstrated by comparing its output with measured saturated symmetric and asymmetric hysteresis loops of SMA actuators and magnetostrictive actuators.
Keywords :
control nonlinearities; electromagnetic actuators; hysteresis; intelligent actuators; magnetostrictive devices; piezoceramics; piezoelectric actuators; density function; generalized Prandtl-Ishlinskii model; generalized asymmetric play hysteresis operator; hysteresis nonlinearities; magnetostrictive actuators; piezoceramic actuators; shape memory alloy actuators; smart actuators; Density functional theory; Hysteresis; Intelligent actuators; Magnetic materials; Magnetostriction; Piezoelectric materials; Robotics and automation; Saturation magnetization; Shape memory alloys; Tellurium; Generzlied play operator; Hysteresis; Prandtl-Ishlnskii model; Smart actautors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Control, Automation, Robotics and Vision, 2008. ICARCV 2008. 10th International Conference on
Conference_Location :
Hanoi
Print_ISBN :
978-1-4244-2286-9
Electronic_ISBN :
978-1-4244-2287-6
Type :
conf
DOI :
10.1109/ICARCV.2008.4795525
Filename :
4795525
Link To Document :
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