Optimal Online Resonance Suppression in a Drive System Based on a Multifrequency Fast Search Algorithm

The resonant frequency drift caused by the change in mechanical parameters will cause the servo mechanism of CNC machine tools, robots and other equipment to produce mechanical resonance again. To address this problem, we propose a novel identification method of mechanical resonance based on the Fib...

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Bibliographic Details
Published in:IEEE access 2021, Vol.9, p.55373-55387
Main Authors: Xia, Jiakuan, Guo, Zhiyan, Li, Zexing
Format: Article
Language:English
Subjects:
Fibonacci principle
Filtering algorithms
Filtering theory
Frequency drift
Identification methods
Machine tools
Mechanical properties
mechanical resonance frequency drifts
notch filter
Notch filters
Optimization
optimization theory
Parameter identification
phase angle loss
Real-time systems
Resonance
Resonant frequencies
Resonant frequency
Search algorithms
Servo mechanism
Servomechanisms
Servomotors
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Summary:The resonant frequency drift caused by the change in mechanical parameters will cause the servo mechanism of CNC machine tools, robots and other equipment to produce mechanical resonance again. To address this problem, we propose a novel identification method of mechanical resonance based on the Fibonacci principle and a novel design method of notch filters based on optimization theory. First, by using a multifrequency sinusoidal signal, we design a fast search algorithm to search for the drift resonance frequency online; then, we optimize the notch filter to achieve fast and real-time resonance suppression by optimization theory. Compared with commonly employed passive resonance suppression methods, the proposed method can rapidly identify the parameters, more accurately suppress the resonance, minimize the phase angle loss and maintain the stability of the system. Finally, we apply the method to a 2-mass system experimental platform. The experimental results show that the proposed method is superior to the conventional passive resonant suppression method under the resonant frequency drift and other states and has strong robust performance.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2021.3071344