APPLYING MULTIPLE MODEL ADAPTIVE CONTROL TO ADJUSTMENT OF SATELLITE ANTENNA POSITION WITH TIME VARYING INPUT DELAY

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ALLAHVERDIZADEH FIROUZ; KHAKI SEDIGH ALI; ROWSHANIAN JAFAR

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Journal: Modares Mechanical Engineering Year:2018 | Volume:18 | Issue:1 Page(s): 75-84

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Title

APPLYING MULTIPLE MODEL ADAPTIVE CONTROL TO ADJUSTMENT OF SATELLITE ANTENNA POSITION WITH TIME VARYING INPUT DELAY

Author(s)

ALLAHVERDIZADEH FIROUZ | KHAKI SEDIGH ALI | ROWSHANIAN JAFAR | Issue Writer Certificate

Keywords

MULTIPLE MODEL ADAPTIVE CONTROLQ1

DELAY SYSTEMSQ1

DELAY TIME ESTIMATION METHODSQ1

WEIGHTED SWITCHING METHODQ1

SATELLITE COMMUNICATIONQ1

Abstract

In this paper, a new MULTIPLE MODEL ADAPTIVE CONTROL (MMAC) is proposed to control of the satellite antenna position with time varying input delay. Selecting of adequate delay estimation method and weighting algorithm using delay estimation error are features of proposed controller. Input delay can be effect on the performance of the closed loop system and if delay time is unknown and time varying, the closed loop system will probably be unstable. At these cases, delay time must be identified to adopt control signal. It is assumed that upper bound of the delay time is known. Delay time is divided into several small bounds and then an adequate PI controller is designed for each bound to guarantee closed loop system performance and stability. In the on-line mode, delay time is identified by adequate estimation algorithm and the control signal is constructed by a weighted sum of the designed controllers output. Control signals weights are a function of the absolute error between the estimated and the average delay time in each bound. Performance of the proposed method and stability of closed-loop system is assessed using several simulations of the system. Simulation results confirm the effectiveness of the proposed algorithm with respect to conventional PI controller.

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APA: Copy

ALLAHVERDIZADEH, FIROUZ, KHAKI SEDIGH, ALI, & ROWSHANIAN, JAFAR. (2018). APPLYING MULTIPLE MODEL ADAPTIVE CONTROL TO ADJUSTMENT OF SATELLITE ANTENNA POSITION WITH TIME VARYING INPUT DELAY. MODARES MECHANICAL ENGINEERING, 18(1 ), 75-84. SID. https://sid.ir/paper/179385/en

Vancouver: Copy

ALLAHVERDIZADEH FIROUZ, KHAKI SEDIGH ALI, ROWSHANIAN JAFAR. APPLYING MULTIPLE MODEL ADAPTIVE CONTROL TO ADJUSTMENT OF SATELLITE ANTENNA POSITION WITH TIME VARYING INPUT DELAY. MODARES MECHANICAL ENGINEERING[Internet]. 2018;18(1 ):75-84. Available from: https://sid.ir/paper/179385/en

IEEE: Copy

FIROUZ ALLAHVERDIZADEH, ALI KHAKI SEDIGH, and JAFAR ROWSHANIAN, “APPLYING MULTIPLE MODEL ADAPTIVE CONTROL TO ADJUSTMENT OF SATELLITE ANTENNA POSITION WITH TIME VARYING INPUT DELAY,” MODARES MECHANICAL ENGINEERING, vol. 18, no. 1 , pp. 75–84, 2018, [Online]. Available: https://sid.ir/paper/179385/en

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