[3] [3] Janaideh M A, Pavel Krejcí. Prandtl-Ishlinskii hysteresis models for complex time dependent hysteresis nonlinearities［J］. Physica B: Condensed Matter, 2012, 407(9): 1365-1367.

[4] [4] Sang-Joo Kim, Chang-Hoan Lee. Creep behavior of soft and hard PZT ceramics during mechanical loading and unloading［J］. Journal of the European Ceramic Society, 2015, 35(14): 3827- 3834.

[7] [7] Chen T, Guestrin C. XGBoost: A Scalable Tree Boosting System［C］. the 22nd ACM SIGKDD International Conference, 2016.

[9] [9] Shi Y, Eberhart R C. Empirical study of particle swarm optimization［C］. Congress on Evolutionary Computation. IEEE, 2002.

[10] [10] Liu Y, Shan J, Qi N. Creep modeling and identification for piezoelectric actuators based on fractional-order system［J］. Mechatronics, 2013, 23(7): 840-847.