FIELD: electricity.
SUBSTANCE: in a piezoelectric device with stepped motion that includes a group of at least two piezoelectric elements, each of them is fixed by its end to a carriage moved along a basis and by its other end to a support pressed to the basis, all piezoelectric elements are divided into two subgroups so that ends with fixed supports of the first subgroup and ends with fixed supports of the second subgroup are directed to the opposite directions, at that sawtooth voltage supplied to the piezoelectric elements of the first subgroup is in reversed phase to the voltage supplied to the piezoelectric elements of the second subgroup. Besides, the carriage is fixed to the supports by means of resilient members. Moreover, these resilient members joining the support with the carriage are made in the form of flat springs or flexible joints.
EFFECT: increasing resting base of the motion device with decrease of its dimensions, increasing operating frequency, compensation of spurious heat losses occurring in result of heating of the piezoelectric elements in-built in the device.
3 cl, 4 dwg
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