文摘
In order to model the hysteresis behavior of a nano piezoelectric actuator (PA) on nano scale in a real time system, a new hysteresis modeling method based on an improved sub-pixel blocking matching algorithm with an optimal block size is proposed in this paper. First, Preisach model is introduced to model the hysteresis behavior of a piezoelectric actuator. Then, a real time block matching algorithm is researched and its block size is optimized with a standard object. Finally, experiments are performed with respect to a nanometer movement platform system, and the results show the feasibility and validity of the sub-pixel estimation based block matching algorithm and its application in modeling the hysteresis behavior of PA.