title: A new control structure to reduce time delay of tracking sensors by applying an angular position sensor.
abstract: In this paper, a new tracking control structure is proposed to decrease the time-delay effect of tracking sensor. To achieve this purpose, an angular position sensor, which generally exists in tracking systems, is used together with the tracking sensor. Also, a compensator is designed and applied to a system with time-delay in order to obtain a behavior same as a system without time-delay. Relying only on tracking sensor may lead to reduce the tracking speed and to increase tracking error. However, it is shown that by using the proposed reformative structure, the speed of tracking and the tracking error can be compensated significantly. In the next step, the performance of the new structure in two cases of constant time-delay and variable time-delay are evaluated and their stability conditions are analyzed. Finally, robustness of the proposed structure is analyzed.
authors.affiliation: Faculty of Electrical Engineering, Amirkabir University of Technology, Tehran, Iran. Electronic address: mysam_yadegar@yahoo.com.
authors.forename: Meysam
authors.initials: M
authors.lastname: Yadegar
authors.affiliation: Faculty of Electrical Engineering, Amirkabir University of Technology, Tehran, Iran. Electronic address: fkarami@aut.ac.ir.
authors.forename: Farzaneh
authors.initials: F
authors.lastname: Karami
authors.affiliation: Faculty of Electrical and Computer Engineering, K.N. Toosi University of Technology, Tehran, Iran. Electronic address: Nobari@eetd.kntu.ac.ir.
authors.forename: Jafar H
authors.initials: JH
authors.lastname: Nobari
keywords: Angular position sensor; Constant time-delay; Stability and robustness analysis; Tracking sensor; Tracking system; Variable time-delay