Hysteresis Modeling for Magnetic Shape Memory Alloy Actuator via Pi-Sigma Neural Network with Backlash-Like Operator

Wei Pan, Rui Xu, Yewei Yu, Chen Zhang, Miaolei Zhou
2020 Acta Physica Polonica. A  
Magnetic shape memory alloy materials have a bright prospect in micro-nano intelligent actuators, however, the hysteresis in these materials is prevalent and damages the positioning precision of these actuators. In this paper, a Pi-Sigma neural network model with a modified backlash-like operator is developed to capture the dynamic hysteresis of the magnetic shape memory alloy material actuator. The modified backlash-like operator is designed for the multi-value-mapping and asymmetrical
more » ... is of the magnetic shape memory alloy material actuator. The rate-dependent hysteresis of the magnetic shape memory alloy material actuator is described via the Pi-Sigma neural network model. Experimental results show that the effectiveness of the proposed model outperforms the Krasnosel'skii-Pokrovskii model.
doi:10.12693/aphyspola.137.634 fatcat:dybwtoxwv5fg7f2lgwc2fwyrhu