Handling Metal Cutting Vibrations in Real Time Using Active Vibration Control

2015 ◽  
Author(s):  
Thomas L. Lago
Keyword(s):  
Vibration Control ◽  
Real Time ◽  
Metal Cutting ◽  
Active Vibration Control ◽  
Cutting Vibrations ◽  
Active Vibration

A nonlinear disturbance rejection vibration control for an all-clamped piezoelectric panel

2020 ◽  
Vol 64 (1-4) ◽  
pp. 403-411
Author(s):  
Shengquan Li ◽  
Chaowei Zhu ◽  
Juan Li ◽  
Qibo Mao
Keyword(s):  
Vibration Control ◽  
Real Time ◽  
Vibration Suppression ◽  
Control Method ◽  
Active Vibration Control ◽  
Laser Vibrometer ◽  
Modeling Uncertainties ◽  
Acceleration Feedback ◽  
Active Vibration ◽  
Nonlinear Extended State Observer

Considering the internal and external disturbances in actual engineering structure, a composite active vibration control method is proposed for an all-clamped piezoelectric panel. First, the theoretical modal analysis and laser vibrometer are employed to obtain the natural frequency and mode shape of the panel, for reasonable arrangement of actuator and accelerometer. Second, a nonlinear extended state observer is introduced to estimate the total disturbances, i.e., modeling uncertainties, high-order harmonics, coupling and external excitations. Third, the estimated value is used to compensate and attenuate the influence of the total disturbances in real time. In addition, the feedback controller based on the proportional differential and acceleration feedback method is designed to enhance the vibration suppression performance of the whole system. Finally, a semi-physical platform is built in MATLAB/Simulink real-time environment with the NI-PCIe6343 acquisition card to verify the effectiveness and superiority of the proposed method.

On Control of Six Freedom Magnetostrictive Smart Structure

2005 ◽  
Vol 475-479 ◽  
pp. 2111-2114 ◽  
Author(s):  
Jian Qin Mao ◽  
Chao Li ◽  
Hui Bin Xu ◽  
Cheng Bao Jiang ◽  
Lin Li
Keyword(s):  
Control System ◽  
Vibration Control ◽  
Real Time ◽  
Computer Control ◽  
Active Vibration Control ◽  
Smart Structure ◽  
Computer Control System ◽  
Magnetostrictive Actuators ◽  
Active Vibration ◽  
Six Degree Of Freedom

A six degree-of-freedom (DOF) Stewart platform is constructed, which consists of six TbDyFe alloy magnetostrictive actuators, and applied to active vibration control. To control the smart structure, a real time computer control system is built. An improved adaptive filtering algorithm is proposed in this paper, which is used for the computer control system. The results of experiments show that the smart structure and the proposed algorithm are efficient for active vibration control. More than 30 dB of vibration attenuation is achieved in real-time experiments.

Sign in / Sign up

Export Citation Format

Share Document