Implementation of system operation modes for health management and failure prognosis in cyber-physical systems

Ruiz Arenas, S.; Rusak, Z.; Mejía-Gutierrez, Ricardo; Horvath, I.

doi:10.3390/s20082429

Implementation of system operation modes for health management and failure prognosis in cyber-physical systems

Title

Implementation of system operation modes for health management and failure prognosis in cyber-physical systems

Author

Ruiz Arenas, S. (TU Delft Internet of Things; Universidad EAFIT)
Rusak, Z. (TU Delft Internet of Things)
Mejía-Gutierrez, Ricardo (Universidad EAFIT)
Horvath, I. (TU Delft Cyber-Physical Systems)

Date

2020

Abstract

Cyber-physical systems (CPSs) have sophisticated control mechanisms that help achieve optimal system operations and services. These mechanisms, imply considering multiple signal inputs in parallel, to timely respond to varying working conditions. Despite the advantages that control mechanisms convey, they bring new challenges in terms of failure prevention. The compensatory action the control exerts cause a fault masking effect, hampering fault diagnosis. Likewise, the multiple information inputs CPSs have to process can affect the timely system response to faults. This article proposes a failure prognosis method, which combines time series-based forecasting methods with statistically based classification techniques in order to investigate system degradation and failure forming on system levels. This method utilizes a new approach based on the concept of the system operation mode (SOM) that offers a novel perspective for health management that allows monitoring the system behavior, through the frequency and duration of SOMs. Validation of this method was conducted by systematically injecting faults in a cyber-physical greenhouse testbed. The obtained results demonstrate that the degradation and fault forming process can be monitored by analyzing the changes of the frequency and duration of SOMs. These indicators made possible to estimate the time to failure caused by various failures in the conducted experiments.

Subject

Cyber-physical systems
Failure prognosis
Health management
System maintenance
System operation modes
System reliability

To reference this document use:

http://resolver.tudelft.nl/uuid:0aa7cf5b-bb82-4ae3-99e0-96df07c83a7a

DOI

https://doi.org/10.3390/s20082429

ISSN

1424-8220

Source

Sensors, 20 (8)

Part of collection

Institutional Repository