Backstepping Control of Electrical Load Simulator with Adaptive Tracking Performance Controller

Abstract:

Electrical Load simulator (ELS) is an important aerodynamics forces/torque loading device which is used for qualification of flight actuation system in ground based experiments. This paper focuses on Backstepping control design with fuzzy logic compensator for extra torque disturbance. To reduce number of fuzzy rules and processing time LuGre model based friction compensation scheme is proposed. Practically fuzzy logic compensation may induce approximation error. A novel PI type tracking performance controller is proposed to compensate tracking error due to parametric uncertainty in the ELS system and LuGre friction model. The tracking performance controller is tuned online based on saturation function based adaptive law derived from the error dynamics between state predictor and actual plant to eliminate chattering from control signal. The validity of control scheme is verified using numerical simulations for desired tracking performance.

• Periodical: Applied Mechanics and Materials (Volume 245)
• Pages: 310-315
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.245.310
• Online since: December 2012
• Authors: Nasim Ullah, Shao Ping Wang
• Keywords: Backstepping Control, Electrical Load Simulator, Extra Torque, Friction, Self-Adaptive Compensation

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