MSPDC-LSTM-based Fault Diagnosis of AUV Thruster

DU Wenliao; YANG Yin; TIAN Shuxia; WANG Hongchao; GONG Xiaoyun; GAO Yiyuan; ZHAO Binbin; HOU Dongdong

doi:10.12382/bgxb.2024.1063

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MSPDC-LSTM-based Fault Diagnosis of AUV Thruster

更新时间：2026-04-24

- MSPDC-LSTM-based Fault Diagnosis of AUV Thruster
- Acta Armamentarii Vol. 47, Issue 2, Pages: 241063(2026)
- 作者机构：
  
  郑州轻工业大学机电工程学院，河南郑州 450002
  中国船舶集团有限公司第七一三研究所，河南郑州 450015
- 作者简介：
- 基金信息：
- DOI：10.12382/bgxb.2024.1063
  CLC： TH165+.3
- Received：24 November 2024，
  
  Online First：25 December 2025，
  
  Published：28 February 2026
- 稿件说明：
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DU Wenliao, YANG Yin, TIAN Shuxia, et al. MSPDC-LSTM-based Fault Diagnosis of AUV Thruster[J]. Acta Armamentarii, 2026, 47(2): 241063.
DOI：

DU Wenliao, YANG Yin, TIAN Shuxia, et al. MSPDC-LSTM-based Fault Diagnosis of AUV Thruster[J]. Acta Armamentarii, 2026, 47(2): 241063. DOI： 10.12382/bgxb.2024.1063.

摘要

自主式水下航行器（Autonomous Underwater Vehicle，AUV）推进器的运行信号表现出强耦合性和非线性特性。针对常规智能故障诊断方法面临的计算复杂度高和诊断精度低的挑战，提出了一种基于长短期记忆网络的多尺度并行空洞卷积的故障诊断方法。为有效捕捉推进器故障的多尺度空间特征，在多尺度网络中引入并行空洞卷积模块。该模块通过并行处理不同尺度的特征，并在不增加参数的情况下扩大感受野，从而提高模型在处理复杂数据时的表现和效率。结合长短期记忆模块增强网络对振动信号时序信息特征的捕捉能力，进一步提高处理复杂序列数据的准确性。通过深度提取信号的时空特性，增强特征学习能力，显著提升诊断的鲁棒性。为验证新方法的可行性，使用AUV实验数据进行实验。研究结果表明，新方法的平均准确率达到99.67%，在2dB强噪声干扰下依然实现了平均95.97%的准确率，可有效识别和判断推进器故障，证明了该方法的有效性和鲁棒性。

Abstract

The operational signals of autonomous underwater vehicle(AUV)propeller exhibit strong coupling and nonlinear characteristics. In the aspect of fault diagnosis of propuller the conventional intelligent fault diagnosis methods has high computational complexity and low diagnostic accuracy. A fault diagnosis method based on multi-scale parallel dilated convolution and long short-term memory(MSPDC-LSTM)is proposed. In order to effectively capture the multi-scale spatial features of propeller faults

a parallel dilated convolution module is introduced in the multi-scale network. This module processes the features at different scales in parallel and expands the receptive field without increasing the number of parameters

thereby enhancing the performance and efficiency of model when handling complex data. The network's ability to capture the temporal information characteristics of vibration signals is improved by integrating the LSTM module

further increasing the accuracy of processing the complex sequential data. The feature learning capability was enhanced by deeply extracting the spatiotemporal characteristics of the signals

significantly improving the robustness of fault diagnosis. To validate the feasibility of the proposed method

the experiments are conducted using AUV experimental data. The results show that the proposed method achieves an average accuracy of 99.67%

and even under strong noise interference at 2 dB

it still reaches an average accuracy of 95.97%. This demonstrates that the method can effectively identify and diagnose the failures of AUV propeller

thereby proving its effectiveness and robustness.

关键词

Keywords

references

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Related Author

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Related Institution

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