带阻滤波器
控制理论(社会学)
固有频率
自适应滤波器
数字滤波器
带宽(计算)
机械共振
物理
振荡(细胞信号)
计算机科学
低通滤波器
滤波器(信号处理)
频率响应
电子工程
声学
工程类
振动
电信
遗传学
生物
电气工程
计算机视觉
人工智能
控制(管理)
作者
Yangyang Chen,Ming Yang,Jinlin Long,Kun Hu,Dianguo Xu,Frede Blaabjerg
出处
期刊:IEEE Transactions on Industrial Electronics
[Institute of Electrical and Electronics Engineers]
日期:2019-01-01
卷期号:66 (1): 90-101
被引量:45
标识
DOI:10.1109/tie.2018.2825300
摘要
Mechanical resonance is a common problem in drive systems with elastic coupling. On-line adaptive notch filter is widely used to make systems stable and the key of this method is to identify natural torsional frequency from a speed feedback signal. However, because of common adoption of digital control and expansion of system bandwidth, oscillation frequency of the system is more likely to deviate from natural torsional frequency to a higher one. When oscillation frequency is shifted, the enabled notch filter with erroneous notch frequency causes an oscillation with a lower frequency and even makes resonance more severe. In order to explain this phenomenon, the classical two-mass model based classification of resonances is checked at first. Then, by taking digital control, current loop delay, and saturation nonlinearity into consideration, an improved digital mechanical resonance model is proposed and a criterion for oscillation frequency deviation is finally obtained. Furthermore, a more widely applicable and robust notch filter tuning strategy with no oscillation rebound is presented. In the end, the validity of aforementioned analysis and strategy is verified by experimental results.
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