Event-Triggered Adaptive Neural Network Controller in a Cyber-Physical Framework

• Published in: IEEE transactions on industrial informatics 2019-04, Vol.15 (4), p.2101-2111
• Main Authors: Kar, Aniket K., Dhar, Narendra Kumar, Verma, Nishchal K.
• Format: Article
• Language: English
• Subjects: Actuators; Adaptive control; Adaptive neural network (NN) controller; Adaptive systems; Air conditioners; Air conditioning; Artificial neural networks; Automated guided vehicles; Case studies; Control systems design; Controllers; cyber–physical system; Data communication; Data transmission; Defense industry; delay; Delays; event-triggered controller; incremental PID controller; Internet; Neural networks; Path tracking; Proportional integral derivative; Remote control; Remote sensors; System dynamics; Uncertainty; Ventilation
• ISSN: 1551-3203; 1941-0050
• DOI: 10.1109/TII.2018.2861904

The importance of remotely placed controller in a cyber space with sensor-controller-actuator network has increased significantly in industrial, defense, and surveillance sector. Such network has large amount of sensor and controller data. A time-triggered control technique may generate redundant control signals and put unnecessary data on network. Therefore, an event-triggered adaptive controller that generates control action at required instants using state- and error-based conditions has been developed in this paper. A data transmission framework has also been designed in this paper that addresses network delay and packet losses. The proposed controller-communication methodology has been validated through two case studies, first, temperature tracking for heating ventilation and air conditioning system and, second, real-time path tracking by automated guided vehicle. The proposed methodology has also been duly compared with its time-triggered counterpart. The control updates are reduced to approximately 41% and 64% in the two case studies, respectively. The experimental results also prove the designed controller to be efficient when compared with event-triggered incremental PID controller using the same data transmission framework.