A controlling means of PZT driving system was introduced in detail. By application of DLL library for PZT power supply and Timer control of VB
the real-time programmable output of control voltage was realized. According to the nonlinearity and hysteresis of PZT
the polynomial curves of the round-trip voltage and displacement of PZT were charted
and the relational expression of voltage with displacement was obtained by MATLAB. The research supplies further scientific ways to amend and reduce the effect of nonlinearity and hysteresis error
and can improve the positioning accuracy of the system.
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references
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