linear Displacement

We began to develop large gauge coefficient piezoelectric ceramic materials in 2010. At the end of that year, it developed excellent products with piezoelectric constant d33 greater than 850×10-12m/V, dielectric constant 5500±10%, and dielectric loss less than 6%. Characteristics of piezoelectric ceramic materials. Through special process research, multiple specifications of piezoelectric ceramic stacked micro-actuators have been successfully produced using this series of materials.

The piezoelectric ceramic microactuator is a high-precision solid-state actuator. It consists of multiple layers of large strain coefficient piezoelectric ceramic sheets and internal electrodes that are interlaced and sintered together. The stack is formed by making side external electrodes to lead out the internal electrodes. Stack, each ceramic piece forming the stack forms an electrical parallel connection and a displacement series connection. An electric field is applied between the two external electrodes. Due to the inverse piezoelectric effect of piezoelectric ceramics, each ceramic piece will deform, which will appear in the stack height direction. Superposition of microdisplacements.

The displacement can be approximately calculated by the following formula:
ΔL= Nd33V or ΔL= d33VL/T

Among them: ΔL is the displacement, N is the number of piezoelectric ceramic layers, d33 is the longitudinal piezoelectric constant, V is the applied voltage, L is the stack height, and T is the thickness of the single-layer piezoelectric ceramic sheet.

2.Product Features

*High energy conversion efficiency
*High displacement accuracy (nanometer level)
*Large output force (up to 10000N)
*Fast response speed (sub-millisecond to microsecond)
*Low power consumption
*No electromagnetic interference
*Low sound of bath
*Small hysteresis
*Good return to zero reproducibility
*Good stability
*Relatively simple voltage control methods can be used, etc.

3.Application Scope

*Various precision micro-motion stages
*Adaptive optics deformable mirror
*Fiber optic and laser tuning
*Optical microprocessing system
*Aircraft control
*Active vibration control
*Scanning Probe Microscope
*Ultra-precision machining, integrated circuit manufacturing
*Biomedical Engineering
*Fast response precision fuel nozzle
*Micro pumps, micro valves, etc.