In most of the piezoelectric stacked motors studied, stator usually adopts two compound modes to drive rotor do step motion. This design method not only improves utilization rate but also torque output a certain extent and increases displacement. this study, new type multi-degree freedom actuator is proposed for stator. The realizes three vibration bending-longitudinal-bending on single stator,...

Abstract We use the shear construction to construct and classify a wide range of two-step solvable Lie groups admitting left-invariant SKT structure. reduce this specification data on Abelian algebras, which then is studied more deeply in different cases. obtain classifications structure results for $$\mathfrak {g}$$ g <...