International Journal of Computer Applications |
Foundation of Computer Science (FCS), NY, USA |
Volume 187 - Number 34 |
Year of Publication: 2025 |
Authors: MD Masud Rana, Bo Sun |
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MD Masud Rana, Bo Sun . Secure Extended Kalman Filter-Based State Estimation and PID Controller for Resilience Water Systems under Sensor False Data Injection Attacks. International Journal of Computer Applications. 187, 34 ( Aug 2025), 1-5. DOI=10.5120/ijca2025925357
Secure state estimation and optimal control in cyber-physical systems (CPS) such as interconnected water tanks are necessary to ensure reliability, safety, and stability under adversarial conditions. This paper identifies three key research challenges: (1) Develop an attack-resilient water level state estimation process under false data injection attacks, (2) Design an optimal controller for maintaining stability of water levels, and (3) Conduct extensive simulations to find a suitable solution for practical water system implementation under adversarial conditions. These are critical business issues, as water cannot be stored in a large- scale, however water is essential for daily life and industries. Therefore, it is important to know the water level observability through state estimation process, afterward we will need to apply the control framework to maintain the water level stability as an acceptable level. To address these important challenges, this paper proposes the Chi-square residual based extended Kalman filter algorithm for accurate water level estimation under adversarial conditions. Afterwards, the PID controller is adopted to maintain the stability of the water level at the reference position. Extensive simulations demonstrate that the proposed algorithm can estimate and maintain water level at an acceptable level in a short period of time. Hopefully, these contributions and findings can significantly help cybersecurity education, CPS secure control ecosystems, and water reservoir framework development.