Event-triggered output feedback control for distributed networked systems

Area of Science:

• Control Engineering
• Networked Systems
• Systems Theory

Background:

• Distributed networked control systems (DNCS) face challenges in communication efficiency and control under partial state information.
• Event-triggered communication strategies offer a promising solution to reduce network load compared to time-triggered systems.

Purpose of the Study:

• To develop an event-triggered output-feedback control scheme for distributed systems with partial state availability.
• To formulate the control design problem as a linear matrix inequality (LMI) feasibility problem.

Main Methods:

• The proposed scheme utilizes local observers within subsystems to estimate states.
• Information is shared among neighboring subsystems only when a local error threshold is exceeded.
• The control design is framed as a linear matrix inequality (LMI) feasibility problem, enabling systematic solution.

Main Results:

• The event-triggered output-feedback control scheme effectively manages communication in distributed systems.
• The LMI formulation provides a feasible approach for designing controllers for systems with partial state information.
• Demonstrated effectiveness through a coupled cart example from existing literature.

Conclusions:

• The developed event-triggered output-feedback control is a viable strategy for enhancing communication efficiency in DNCS.
• The LMI-based design approach offers a robust method for addressing control problems with limited state information.
• This work contributes to the advancement of efficient and decentralized control strategies for networked systems.