1300600078

Fabrication of micro/nano-sized machine elements has great potentials to realize miniaturized mechanisms and systems, for which high-precision, long-term operation and/or low power consumption are critical. Therefore, development of micro/nano-sized machines, drives and actuators is attractive narrow research area. Among many technologies to realize micro/nano-sized machine elements, piezoelectric drives and actuators are the most commonly used technology today due to its many advantages such as non-contact operation, fast response, small size, ability to generate large forces, and simplicity. Among piezoelectric drives and actuators, 1300600078 is a newly developed piezoelectric device. This paper reviews the operating, design and application fields of 1300600078.

The 1300600078 is a commercial piezoelectric actuator product with an A-shape design for mid-range force-displacement applications. It contains a piezoelectric stack sandwiched between two aluminum plates. The piezoelectric stack consists of hundreds of wafers of piezoelectric ceramic, each wafer is made of a core material of lead zirconate titanate (PZT) and an aluminum nitride (AlN) internal electrode. A metalized AlN external electrodes are placed on the top and bottom of the wafers, provides active area for generating displacements. The 1300600078 is about 39 mm in length and 10.3 mm in outside diameter, with a total weight of only 14.4g. The area of the active electrode is 4.5 cm[sup]2[/sup]. The terminations of the 1300600078 are gold-plated rings and high strength Tin/silver silicone insulated wires. A thin silicone protective coating is applied to further protect the device.

The working principle of 1300600078 is based on the inverse piezoelectric effect of the PZT material, that when an electric field is applied across piezoelectric material, it will deform and generate a mechanical force. When a voltage (electric field) is applied across the 1300600078, the piezoelectric stack changes its shape due to the induced stresses, resulting in a displacement, rising from zero to 40μm in a time period of 0.136 s in the positive direction. When the voltage is reversed, the device moves back to its original position in a similar time scale. The maximum displacement of 1300600078 can reach 40 μm in one direction, and total displacement can reach up to 80 μm in two steps. The maximum force generated by the 1300600078 is 0.8 N. The resonance frequency of a single 1300600078 is around 450 Hz.

The 1300600078 piezoelectric device finds applications in industrial and military fields such as precision motion, vibration control, shock and vibration dampener, etc. They are also extremely suitable for mission critical applications with their excellent long-term reliability and durability. The combination of their small size, low power consumption and high force output makes them especially suitable for robotics and actuator design. In addition to the built-in force-displacement monotonic actuation using the inversion effect on the Piezoelectric material, the 1300600078 also offers the capability for higher precision motion and force control due to the low level of hysteresis in the force-displacement curve.

In summary, the 1300600078 piezoelectric actuators are low profile, high force output devices with high long-term reliability and very low power consumption. They can be used for mission critical applications and precisely controlled motion due to their low hysteresis force-displacement characteristic. Their small size, mass and wide range of operating voltages make them suitable for a variety of applications in industry and military fields.