A digitally linear piezoelectric bimorph actuator in open-loop mode

Xiao, Wenlei; Huan, Ji; Liu, Guoxi; Shi, Huaduo; Dong, Shuxiang
March 2013
Applied Physics Letters;3/25/2013, Vol. 102 Issue 12, p123503
Academic Journal
The current paper reports a digital piezoelectric bimorph actuator having segmented electrodes and producing 2 to the nth power digital bending actuation in on/off switch mode and under a fix applied voltage. Correspondingly, a simple model for predicting digital actuation under applied coding voltage is also presented. Experimental results have confirmed that the proposed actuator can produce a linear digital displacement without a hysteresis loop. The proposed method is significant for open-loop high precise actuation.


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