Modeling of butterfly-shaped hysteresis in dielectric elastomer actuators
Source abstract
Abstract
Dielectric elastomer actuators exhibit butterfly-shaped hysteresis effects under unbiased periodic input signals. In comparison with single hysteresis effects, butterfly-shaped hysteresis effects are more complicated, which include two single hysteresis loops, and the directions of both loops are different. Hence, it is a great challenge to build a hysteresis model to describe the butterfly-shaped behavior. To this end, a butterfly-shaped relay operator is newly proposed as an elementary operator to construct the butterfly-shaped Preisach model, and the weighting functions/weights of the developed model are positively defined, which facilitates the construction of the unique inverse model and the controller design. To further improve the modeling accuracy, a piecewise-defined butterfly-shaped Preisach model considering the variation of asymmetric nonlinear hysteresis effects with different input amplitudes is proposed. Experiments with the fabricated elastomer actuator-actuated system are conducted to validate the effectiveness of the developed modeling approach.
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Research context
OpenAlex topics: Piezoelectric Actuators and Control · Magnetic Properties and Applications · Ferroelectric and Piezoelectric Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Automation Engineering, Northeast Electric Power University 1 , Jilin 132012, China
State Key Laboratory of Synthetical Automation for Process Industries, Northeastern University 2 , Shenyang 110819, China
Funding
Fundamental Research Funds for the Central Universities · Xing Liao Ying Cai · National Natural Science Foundation of China · National Key Research and Development Program of China
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