利用旋转型压电执行器驱动的人工眼球结构  

Artificial eyeball structure driven by rotary piezoelectric actuator

作　　者：权令伟 陈学磊 易超 鹿存跃[1] QUAN Ling-wei;CHEN Xue-lei;YI Chao;LU Cun-yue(School of Electronic Information and Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《沈阳工业大学学报》2021年第3期259-264,共6页Journal of Shenyang University of Technology

基　　金：国家自然科学基金项目(11174206);上海交通大学深蓝计划(SL2020ZD103).

摘　　要：针对微型化人工眼球转动驱动长期以来存在的难题,提出一种利用惯性冲量式压电执行器构造紧凑旋转驱动结构的技术方案,并使用不对称锯齿波信号激励的压电陶瓷叠堆作为驱动源.结果表明,在驱动信号上升沿占周期比为0.95、激励电压为125 V、激励频率为1 kHz、滑动摩擦力为1 N的条件下,结构最外端的微镜头线速度可达2.08 mm/s.该方案具有结构紧凑、精度高、响应快等特点,为仿生眼球等视觉目标跟踪设备提供了一种新的精密驱动手段.Aiming at the long-standing hard problem in the rotary driving of miniaturized artificial eyeballs,a technical scheme using inertial impulse piezoelectric actuators to construct a compact rotary drive structure was proposed.The piezoelectric ceramic stack excited by asymmetric sawtooth wave signals was used as the driving source.The results show that the linear speed of outermost micro-lens can reach 2.08 mm/s under the conditions of rising edge ratio 0.95 in one period,excitation voltage 125 V,excitation frequency 1 kHz and sliding friction 1 N.The as-proposed scheme has the characteristics of compact structure,high precision and fast response,providing a novel precise driving method for visual target tracking devices such as bionic eyeballs.

关 键 词：微型化 人工眼球 惯性冲量 压电叠堆 视觉目标跟踪 压电执行器 锯齿波 滑动摩擦力 

分 类 号：TM359.4[电气工程—电机]