Adversarial Attacks on Machinery Fault Diagnosis
This work addresses the robustness problem for machinery fault diagnosis systems, which is incremental as it applies known adversarial attack methods to a specific domain.
The paper tackles the vulnerability of neural network-based machinery fault diagnosis models to adversarial attacks, showing that adding small perturbations can greatly reduce model accuracies, and proposes a protection scheme to improve robustness.
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.