Adaptive state estimation for cyber physical systems under sparse attacks

作者：Zhang, Hao; Peng, Chen^*; Sun, Hongtao; Du, Dajun

来源：TRANSACTIONS OF THE INSTITUTE OF MEASUREMENT AND CONTROL, 2019, 41(6): 1571-1579.

DOI：10.1177/0142331217730123

• Cyber physical system (CPS)
• sparse attacks
• state estimation
• optimization algorithm
• variable step-size

This paper investigates the state estimation problem for cyber physical systems under sparse attacks. Firstly, the fundamental state estimation problem is transferred to an optimization problem with a unique solution. Secondly, an adaptive estimation method for sparse attacks is proposed, which convergence property is well proved. The advantage of proposed method is that the step-size can be adaptively adjusted based on the dynamic estimation errors. Therefore, the computing time is less than some existing methods while guaranteeing the desired performance. Then, a suitable state feedback is designed to improve the computing speed while enhancing the resiliency for the destroyed system. Finally, the speed performance and accuracy of proposed algorithm are verified by two numerical examples.

• 出版日期2019-4
• 单位上海大学