执行机构
控制理论(社会学)
电压
压电
打滑(空气动力学)
流离失所(心理学)
跳跃
平滑度
声学
转子(电动)
计算机科学
材料科学
机械
物理
机械工程
工程类
数学
控制(管理)
心理学
数学分析
量子力学
人工智能
心理治疗师
热力学
作者
Zhaochen Ding,Huadong Yu,Xiaoqin Zhou,Zhi Xu,Jing Dong,Wen Qiu
摘要
Existing kinds of stepping piezoelectric actuators have difficulty in maintaining smooth stepping characteristics in motion, especially with applied loads, because they are limited by their driving principle and structural design. However, non-smooth stepping characteristics not only reduce the output performance of piezoelectric actuators but also greatly limit the applications of piezoelectric actuators. In this paper, a bipedal cooperative drive method for the stick-slip actuator is proposed to improve stepping characteristics and achieve smooth motion under different conditions. Two flexible driving feet alternately push the rotor to rotate clockwise. Experimental results show that the stepping characteristics vary with the driving voltage, and the displacement curve transitions from non-smooth to smooth to sudden jump as the driving voltage rises. Furthermore, the displacement curves can maintain good smoothness within a horizontal load range of 20-30 g. The maximum angular speed of the designed actuator is 1452 mrad/s when the driving voltage and driving frequency are 100 V and 1400 Hz, respectively. These features help broaden the practical application of actuators.
科研通智能强力驱动
Strongly Powered by AbleSci AI