Title :
Discrete sliding mode control of seeker scan loop using adaptive reaching law
Author :
Kurode, Shailaja ; Balajiwale, Shweta
Author_Institution :
Dept. of Electr. Eng., Coll. of Eng., Pune, India
Abstract :
This paper presents a discrete sliding mode control (DSMC) for seeker system, which consists of two axes gimbal system and an infrared sensor. The main objective of the discrete controller is to compensate the parametric uncertainties and disturbance due to cross-coupling torque between the two gimbals. A DSMC is designed using adaptive reaching law. A spiral scan loop is generated using a sinusoid and a cosinusoid waveform of varying amplitude and the seeker is made to follow this spiral pattern for searching. Su´s disturbance estimator is used to compensate total lumped matched disturbance. The performance of the controller is validated in simulations.
Keywords :
adaptive control; discrete systems; infrared detectors; variable structure systems; DSMC; Su disturbance estimator; adaptive reaching law; cosinusoid waveform; cross-coupling torque; discrete sliding mode control; infrared sensor; parametric uncertainties; seeker scan loop; seeker system; spiral pattern; two axes gimbal system; varying amplitude; Adaptation models; Adaptive systems; DC motors; Mathematical model; Sliding mode control; Torque; Adaptive Reaching Law; Discrete Sliding Mode Control (DSMC); Seeker System; disturbance estimation;
Conference_Titel :
Control Applications (CCA), 2013 IEEE International Conference on
Conference_Location :
Hyderabad
DOI :
10.1109/CCA.2013.6662832