A Novel Hybrid Error Criterion-Based Active Control Method for on-Line Milling Vibration Suppression with Piezoelectric Actuators and Sensors

Sensors

Xingwu Zhang²  Chenxi Wang²  Robert X. Gao¹  Ruqiang Yan¹  Xuefeng Chen²  Shibin Wang² 

[1] Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH 44106, USA;State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China;

关键词: active control;    hybrid error criterion;    milling process;    vibration suppression;   

DOI  :  10.3390/s16010068

来源: mdpi

【 摘 要 】

Milling vibration is one of the most serious factors affecting machining quality and precision. In this paper a novel hybrid error criterion-based frequency-domain LMS active control method is constructed and used for vibration suppression of milling processes by piezoelectric actuators and sensors, in which only one Fast Fourier Transform (FFT) is used and no Inverse Fast Fourier Transform (IFFT) is involved. The correction formulas are derived by a steepest descent procedure and the control parameters are analyzed and optimized. Then, a novel hybrid error criterion is constructed to improve the adaptability, reliability and anti-interference ability of the constructed control algorithm. Finally, based on piezoelectric actuators and acceleration sensors, a simulation of a spindle and a milling process experiment are presented to verify the proposed method. Besides, a protection program is added in the control flow to enhance the reliability of the control method in applications. The simulation and experiment results indicate that the proposed method is an effective and reliable way for on-line vibration suppression, and the machining quality can be obviously improved.

【 授权许可】

CC BY   
© 2016 by the authors; licensee MDPI, Basel, Switzerland.