Research Directions
1. Internal Model Approach to the Cooperative Output Regulation
The cooperative output regulation problem is to find a cooperative control law for a group of agents the common goals of which are to asymptotically track a class of reference inputs and to reject a class of disturbances while maintaining overall closed-loop stability. To this end, distributed control laws are more practical than centralized ones because of less information exchange. The distributed control laws used to solve this problem can be classified into two categories: feedforward approach and internal model approach. The feedforward approach involves a feedforward gain that relies on the solution of a set of equations consisting of the agent and leader dynamics (i.e., regulator equations). Therefore, this approach is known to be not robust to parameter uncertainties. On the other hand, the internal model approach is robust with respect to small variations of the plant parameters.
References
Publications
[1] Koru, A. T., Sarsılmaz, S. B., Yücelen, T., and Johnson, E. N. (2020). Cooperative Output Regulation of Heterogeneous Multiagent Systems: A Global Distributed Control Synthesis Approach. IEEE Transactions on Automatic Control, 66(9), 4289–4296. (link)
[2] Koru, A. T., Yücelen, T., Johnson, E. N., and Sarsılmaz, S. B (2020, July). On cooperative control of linear multiagent systems over networks with limited bandwidth. In IEEE American Control Conference (ACC), Denver, CO, USA. (link)
[3] Koru, A. T., Maadani, M., Sarsılmaz, S. B., Johnson, E. N., Butcher, E. A., and Yucelen, T. (2020, Jan). Adaptive consensus control of rigid body attitude motion based on rotation matrices. In AIAA Scitech Forum, Orlando, FL, USA. (link)
[4] Yıldırım, E., Sarsılmaz, S. B., Koru, A. T., and Yücelen, T. (2019). On control of multiagent systems in the presence of a misbehaving agent. IEEE Control Systems Letters, 4(2), 456–461. (link)
[5] Koru, A. T., Yücelen, T., Sipahi, R., Ramirez, A., and Doğan, K. M. (2019, June). Stability of human-in-the-loop multiagent systems with time delays. In IEEE American Control Conference (ACC) (pp. 4854–4859), Philadelphia, PA, USA. (link)
