Abstract
In this study, the disadvantage that adhesive layer of piezoelectric bimorph actuator was ignored when model of actuator was developed by predecessors is indicated, according to the actual structure of actuator. Based on the thickness of adhesive layer and substrate, the improved model of adhesive layer that substrate and adhesive layer are combined as one layer called mid layer is proposed. Mathematical model of mid layer can be obtained with theory of composite material, which is then used to develop the model of actuator under electrical load. Another model of actuator is developed as a reference in the same way except with model of adhesive layer used by predecessors, and experiment is also presented later. Performance predicted by these two models of actuator and result measured in the experiment are compared, which comes to a conclusion that model of actuator developed with the improved model of adhesive layer conform to the physical model and is more precise in performance prediction.
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