Absolute stability for the lateral-directional BWB model with rate limited actuator

• Main Authors: Ionel IORGA, Claudia STATE
• Format: Article
• Language: English
• Published: National Institute for Aerospace Research “Elie Carafoli” - INCAS 2012-06-01
• Series: INCAS Bulletin
• Subjects: oscillations; Lurie Control Problem; Popov Criterion; Blended Wing Body configuration
• Online Access: http://bulletin.incas.ro/files/state_c_iorga_i_v4_iss_2_full.pdf

In this paper the authors present a study regarding the interaction between the human pilot and the aircraft which may result in a dangerous phenomenon called Pilot Induced Oscillations (PIO), in the context of the lateral directional motion. The theoretical model of the airplane used is a Blended Wing Body (BWB) configuration and the human operator is expressed by the Synchronous Pilot Model (represented by a simple gain). The Popov criterion, in the case of the infinite parameter, is applied in order to investigate the absolute stability of the pilot-airplane linearized system in the presence of the rate saturation of the actuator.