Adversarial Attacks on Machinery Fault Diagnosis

TL;DR

This paper investigates the vulnerability of neural network-based machinery fault diagnosis models to adversarial attacks and proposes a simple, effective scheme to enhance their robustness against such perturbations.

Contribution

It reformulates various adversarial attacks for machinery fault diagnosis and introduces a universal protection scheme to defend against these attacks.

Findings

Model accuracy drops significantly under adversarial perturbations.

The proposed protection scheme effectively improves model robustness.

Experimental validation on six models demonstrates the scheme's effectiveness.

Abstract

Despite the great progress of neural network-based (NN-based) machinery fault diagnosis methods, their robustness has been largely neglected, for they can be easily fooled through adding imperceptible perturbation to the input. For fault diagnosis problems, in this paper, we reformulate various adversarial attacks and intensively investigate them under untargeted and targeted conditions. Experimental results on six typical NN-based models show that accuracies of the models are greatly reduced by adding small perturbations. We further propose a simple, efficient and universal scheme to protect the victim models. This work provides an in-depth look at adversarial examples of machinery vibration signals for developing protection methods against adversarial attack and improving the robustness of NN-based models.