摘要
设计一种带有压电陶瓷执行机构的弹性支承干摩擦阻尼器,对其减振效果进行了实验验证.首先介绍了弹性支承干摩擦阻尼器的基本工作原理,接着回顾了一种电磁铁作动方式的弹性支承干摩擦阻尼器,提出了将压电陶瓷运用于其执行机构的方案,该方案可简化其结构,减少其质量,最后对该方案的减振效果进行了实验验证.结果表明:带有压电陶瓷执行机构的弹性支承干摩擦阻尼器对转子系统的振动具有明显的抑制作用,转子经过临界转速点的振幅最大减小约66%,并且与原阻尼器相比,结构更简单,质量减少一半,且功耗仅为5W.
An elastic support/dry friction damper using piezoelectric ceramic was de signed and its effectiveness of reducing rotor vibration was experimentally verified. Firstly, the basic operation mode of elastic support/dry friction damper was introduced. Then based on the previous structure using an electromagnet, an elastic support/dry friction damper u sing piezoelectric ceramic which was simpler and lighter was designed, and its effectiveness of reducing rotor vibration was experimentally verified. The experimental results show that the elastic support/dry friction damper using piezoelectric ceramic can significantly reduce vi bration in a rotor system the maximum reduction of vibration amplitude is about 66% at the critical speed. Compared with the previous design, the structure is much simpler, the weight is reduced by half and the power consumption is just 5 W.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2013年第10期2223-2227,共5页
Journal of Aerospace Power
关键词
弹性支承干摩擦阻尼器
压电陶瓷
转子系统
临界转速
振动控制
elastic support/dry friction damper piezoelectric ceramic
rotor systemcritical speed vibration control