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Meiju YANG,Chunxia LI,Guoying GU,Limin ZHU
《机械工程前沿（英文）》 2015年 第10卷 第1期 页码 37-42 doi: 10.1007/s11465-015-0326-1
In this paper, a novel rate-dependent Prandtl-Ishlinskii (P-I) model is proposed to characterize the rate-dependent hysteresis nonlinearity of piezoelectric actuators. The new model is based on a modified rate-dependent play operator, in which a dynamic envelope function is introduced to replace the input function of the classical play operator. Moreover, a dynamic density function is utilized in the proposed P-I model. The parameters of the proposed model are identified by a modified particle swarm optimization algorithm. Finally, experiments are conducted on a piezo-actuated nanopositioning stage to validate the proposed P-I model under the sinusoidal inputs. The experimental results show that the developed rate-dependent P-I model precisely characterize the rate-dependent hysteresis loops up to 1000 Hz.
关键词： piezoelectric actuators hysteresis Prandtl-Ishlinskii rate-dependent
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