期刊
JOURNAL OF VIBRATION AND CONTROL
卷 27, 期 7-8, 页码 790-801出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1077546320933477
关键词
Vibration; adaptive control; harmonic steady state; multiple-input multiple-output
This study presents a combined feedback-feedforward adaptive regulator for active vibration control in machining processes. Through simulations and experimental campaigns, the system is proven effective in reducing vibration amplitudes, with a maximum reduction of 43.7% at critical frequencies.
This study presents a combined feedback-feedforward adaptive regulator applied to an active vibration control tool holder platform to contain the effect of machining vibrations. The proposed mechatronic solution can be integrated in a milling machine tool as an interface between the beam (Z-axis) and the tool holder. The aim is to counteract vibrations in the broadband frequency range (100 Hz-900 Hz), controlling the tool position in real time. The active vibration control system is based on the harmonic steady-state concept due to the sinusoidal representation of the disturbance signals. The study focuses on the regulator architecture and the main logics applied to satisfy the required performance. A full investigation is executed through simulations and experimental campaigns, proving the disturbance reduction. The active vibration control system is implemented on a 4-axis machine tool and validated using multitonal disturbances. The system is evaluated in compensating a set of undesired effects, such as vibrations generated by unbalanced tools or hard material cutting processes. The obtained results show a maximum reduction of the vibration amplitude by 43.7% at the critical frequency.
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