Intelligent mixed H-2/H-infinity FOPID controller optimized for radar guided missile

Yaghi M., EFE M. Ö.

6th International Conference on Control Engineering and Information Technology (CEIT), İstanbul, Turkey, 25 - 27 October 2018 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • City: İstanbul
  • Country: Turkey
  • Hacettepe University Affiliated: Yes


A mixed weighted H-2/H-infinity tuning algorithm for fractional order PID controller is introduced and optimized for missile guidance system. The missile dynamics are highly nonlinear and the performance of the controller is usually degraded near the impact region which could cause the missile to miss the target. Therefore, a new tuning strategy is introduced to put weights for H-2/H-infinity which depends on the range between the missile and the target. The introduced tuning procedure makes the controller more optimized in tracking the target near the impact region and eventually hit the target with more accuracy and less miss distance. Genetic algorithm is used to search the space for minimum H-2/H-infinity value especially near the impact region. The control system is compared with Zeigler-Nichols tuning method applied on the standard PID controller, and the simulation results demonstrated the accuracy and superiority of the proposed controller over the conventional one.