Small, hollow, multilayer actuators with a diameter of 3 mm were fabricated by the stacking method from piezoelectric hard lead zirconate titanate (PZT) ceramics. Langevin vibrators were also constructed with the hollow multilayer actuators. The performance capabilities of the actuator and Langevin vibrator samples were examined under high-power conditions. The high-power vibration level at a given sinusoidal drive voltage was significantly enhanced by using a multilayer structure under either a nonresonance or resonance condition. A maximum vibration velocity of 0.17 m/sec was obtained for the 9-layer actuator sample under nonresonance conditions. The vibration velocity was further improved with the Langevin vibrator driven at the resonance frequency. The temperature rise due to heat generation under high-power conditions was the immediate limitation on the maximum accessible vibration velocity for the stacked actuators.
展开▼
机译:通过堆叠方法,用压电硬质钛酸锆钛酸铅(PZT)陶瓷制造了直径为3 mm的小型中空多层致动器。 Langevin振动器也与空心多层执行器一起构造。在大功率条件下检查了执行器和兰格文振动器样品的性能。通过在非共振或共振条件下使用多层结构,在给定正弦驱动电压下的大功率振动水平得到了显着提高。在非共振条件下,9层致动器样品的最大振动速度为0.17 m / sec。用以共振频率驱动的兰格文振动器可进一步提高振动速度。由于在大功率条件下产生热量而引起的温度升高是对堆叠式执行器最大可到达振动速度的直接限制。
展开▼