Abstract-Shape memory alloy (SMA) actuators provide unique features for motion control applications due to their compact design and high force to weight ratio. Integration of SMA actuators in motion control applications has not been widely employed due to their nonlinear behaviors and control difficulties. In this paper, the concept of model-based control of SMA actuators is introduced. Time variable parameter (TVP) model is used to describe the actuator dynamics. Gain scheduled Proportional-Integral (PI) controller with time variable gains has been developed based on pole placement technique. Experimental evaluation of gains schedule PI controller for SMA actuators shows stable and robust response that could compensate for the nonlinear phenomenon of these actuators.
In embarked networks: aeronautics, naval ..., the power is not infinite contrary to the classic energy distribution network. This paper deals with a general approach of embarked network modeling. The model built leads to a simulator which allows predicting network's dynamic behavior in both trasient and steady states. It allows highlighting various phenomena which can appear in the network (desynchronization, ...).Moreover, in view of voltage and frequency control a second modeling approach based on identification is used to synthesize voltage and frequency regulators. LOB 2005 -I2'eeeden ISBN P.1 Silludadon UW colw-ol of clomie'd ..Wp lic'-moll BLL-L rvcldli DEl 2005 -L)i--;c11i ISBN: 90-75815-08-5 1>q1
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