PMID- 35017612
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20220211
LR  - 20220211
IS  - 2045-2322 (Electronic)
IS  - 2045-2322 (Linking)
VI  - 12
IP  - 1
DP  - 2022 Jan 11
TI  - A trend extraction method based on logistic functions and envelopes.
PG  - 530
LID - 10.1038/s41598-021-04596-8 [doi]
LID - 530
AB  - A method of step characteristic trend extraction based on logistic functions and 
      envelopes (LFEs) is proposed in this paper. Compared with the existing trend 
      extraction methods, the LFE method can determine the starting position of the 
      step trend using a logistic function and extract the local trend using upper and 
      lower envelopes. This method enhances the extraction accuracy and reduces the 
      computation time. To verify the effectiveness of the LFE method, a simulated 
      signal with a step trend feature was compared with the five-spot triple smoothing 
      method, wavelet transform method and empirical mode decomposition-based method. 
      All of these methods were applied to a real shock signal. The results demonstrate 
      that the LFE method can reliably and accurately extract the trends with step 
      characteristics based on less prior knowledge. Moreover, the proposed technique 
      is suitable for industrial online applications.
CI  - (c) 2022. The Author(s).
FAU - Zhang, Jingjing
AU  - Zhang J
AD  - School of Mechatronic Engineering and Automation, Foshan University, Foshan, 
      528225, China.
FAU - Luo, Jinglin
AU  - Luo J
AD  - Foshan Zhishi Technology Co., Ltd, Foshan, 528225, China. 151809425@qq.com.
FAU - Zhang, Xuan
AU  - Zhang X
AD  - Tianjin Aerospace Reliability Technology Co., Ltd, Tianjin, China.
LA  - eng
GR  - 52005106/National Natural Science Foundation of China/
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20220111
PL  - England
TA  - Sci Rep
JT  - Scientific reports
JID - 101563288
SB  - IM
PMC - PMC8752829
COIS- The authors declare no competing interests.
EDAT- 2022/01/13 06:00
MHDA- 2022/01/13 06:01
PMCR- 2022/01/11
CRDT- 2022/01/12 06:23
PHST- 2021/09/02 00:00 [received]
PHST- 2021/12/21 00:00 [accepted]
PHST- 2022/01/12 06:23 [entrez]
PHST- 2022/01/13 06:00 [pubmed]
PHST- 2022/01/13 06:01 [medline]
PHST- 2022/01/11 00:00 [pmc-release]
AID - 10.1038/s41598-021-04596-8 [pii]
AID - 4596 [pii]
AID - 10.1038/s41598-021-04596-8 [doi]
PST - epublish
SO  - Sci Rep. 2022 Jan 11;12(1):530. doi: 10.1038/s41598-021-04596-8.