流离失所(心理学)
压电
控制理论(社会学)
执行机构
前馈
PID控制器
压电马达
压电加速度计
声学
电压
工程类
压电系数
物理
计算机科学
控制工程
电气工程
控制(管理)
温度控制
心理学
人工智能
心理治疗师
作者
Yujian Tong,Chong Li,Jiwen Fang,Jichun Xing,Xiaorui Fu
出处
期刊:International Journal of Applied Electromagnetics and Mechanics
[IOS Press]
日期:2023-03-31
卷期号:72 (2): 175-197
被引量:1
摘要
To increase the output displacement of the linear piezoelectric actuator, a linear piezoelectric actuator with large displacement and three operation modes is proposed. The operating principle of the piezoelectric actuator is presented. The magnification factor of the displacement amplification mechanism is deduced and verified by finite element analysis. To improve the output precision of the actuator, a feedforward PID control model is established. Based on the experimental test platform, the output characteristics of the piezoelectric actuator are tested. Results show the maximum output displacement of the piezoelectric actuator is 558.3 μm under a driving voltage of 150 V with two piezoelectric stacks. When the driving frequencies are less than 3 Hz, the control accuracy of feedforward PID is higher than that of PID, and the error between the measured displacement and the ideal value is less than 10% after applying the control to the piezoelectric actuator.
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