The laboratory Twin Rotor Multiple Input Multiple Output System (TRMS) serves as a model of a helicopter. Station keeping or hovering in spite of uncertainties like sensor and/or actuator failures is important in Helicopter system and in TRMS. The paper discusses the design of H infinity controller, which is made reliable for TRMS sensor and actuator failure. The desired state feedback law is constructed in terms of a positive definite solution of an Algebraic Riccati equation. Further, closed loop stability of TRMS along with the H infinity controller is tested and its robust stability bound has been obtained.
Rao, Vidya S.
"Design of Reliable Controller for Twin Rotor MIMO System and Closed Loop Stability Analysis,"
Manipal Journal of Science and Technology: Vol. 2:
1, Article 5.
Available at: https://impressions.manipal.edu/mjst/vol2/iss1/5