title: Novel controller design for plants with relay nonlinearity to reduce amplitude of sustained oscillations: Illustration with a fractional controller.
abstract: This paper proposes a novel constrained optimization problem to design a controller for plants containing relay nonlinearity to reduce the amplitude of sustained oscillations. The controller is additionally constrained to satisfy desirable loop specifications. The proposed formulation is validated by designing a fractional PI controller for a plant with relay.
authors: Department of Avionics, Indian Institute of Space Science and Technology (IIST), Thiruvananthapuram-695547, India.
authors: Ameya Anil
authors: AA
authors: Kesarkar
authors: Department of Avionics, Indian Institute of Space Science and Technology (IIST), Thiruvananthapuram-695547, India. Electronic address: n_selvag@iist.ac.in.
authors: N
authors: N
authors: Selvaganesan
authors: Department of Avionics, Indian Institute of Space Science and Technology (IIST), Thiruvananthapuram-695547, India.
authors: H
authors: H
authors: Priyadarshan
keywords: Describing function; Limit cycles; Relay nonlinearity