5 results about "Piezoelectric bimorph" patented technology

A piezoelectric vibration energy harvester includes: a first support plate, a second support plate, a piezoelectric bimorph cantilever, a rolling part, a printing raceway, a preloading spring and a bottom plate, the first and second support plates are vertically disposed on the bottom plate, two ends of the piezoelectric bimorph cantilever are respectively connected with the first support plate and the rolling part, an end of the preloading spring is fixed on the second support plate, another end of the preloading spring is movably connected with a back surface of the printing raceway, and a surface opposite to the back surface of the printing raceway is in contact with and coupled with the rolling part. The printing raceway can be obtained by programming the number and initial positions of static equilibrium points, and a multi-stable piezoelectric energy harvester with symmetric or asymmetric potential energy well can be realized.

The application discloses a kind of laser scanning cutting endoscope robots based on carbon fiber paper micro-vibration mirror, the endoscope robot is fixedly installed with paper transmission structure in one end of support structure, and the other end is fixedly installed with GRIN lens;Fixed mirror, X galvanometer and Y galvanometer are fixedly installed in paper transmission structure, and optical path is formed by optical fiber, GRIN lens, fixed mirror, X galvanometer and Y galvanometer;First piezoelectric bimorph driver and second piezoelectric bimorph driver are piezoelectric bimorph driver installed between support structure and paper transmission structure;First piezoelectric bimorph driver is used to drive X galvanometer to rotate around Y axis and / or by paper transmission structure;Second piezoelectric bimorph driver is used to drive Y galvanometer to rotate around Z axis by paper transmission structure.The above-mentioned endoscope robot is compact, light, stable in motion and has excellent dynamic performance by using piezoelectric bimorph driver and paper transmission structure.

The application discloses a kind of linear feeding device and method based on piezoelectric transducer inertia drive, feeding device includes base, first to fourth spring piece, first to second connecting block, piezoelectric transducer, top disc, piezoelectric bimorph, first to third stop piece, and M+N+P adjusting bolts;When working, sine excitation signal is applied to piezoelectric transducer, the second order longitudinal vibration mode of piezoelectric transducer can be excited, to induce the reciprocating bending vibration of spring piece, drive top disc to generate horizontal and vertical direction movement.Material placed in top disc moves forward and upward with top disc in material groove.When spring piece moves to limit position, elastic potential energy stored in spring piece drives top disc to move back, at this time, material continues to move forward and falls under the action of inertia in parabolic curve.Under this periodic motion, the transportation of material in top disc is realized.The application has simple structure, and is easy to process and assemble.

This invention discloses a two-dimensional laser scanning galvanometer device based on piezoelectric bicrystalline wafer driving, belonging to the field of piezoelectric driven scanning galvanometer technology. It includes a base with a circular hole on its side wall. A laser emitting device, partially penetrating the interior of the base, is installed through this hole. A first deflecting lens group is mounted on the side of the base. Below the first deflecting lens group, a second deflecting lens group is fixed to the base and perpendicular to it. A top cover is mounted on the top of the base. This invention, employing the aforementioned two-dimensional laser scanning galvanometer device based on piezoelectric bicrystalline wafer driving, solves the problems of dynamic performance contradictions, thermal drift, and reliability limitations inherent in existing electromagnetically driven scanning galvanometers. It fundamentally achieves high-bandwidth, low-heat-dissipation, and wear-free precision beam scanning. Furthermore, it is compact, portable, and low-cost, making it suitable for mass production and widespread civilian application.