Estimating Disturbance Torque Effects on the Stability and Control Performance of Two-Axis Gimbal Systems
https://doi.org/10.32603/1993-8985-2022-25-4-63-71
Abstract
Introduction. Two-axis gimbal systems are applied for stabilizing and controlling the line of sight (LOS) of an optical or imaging system mounted on a moving vehicle. Gimbal systems are intended to isolate various disturbance torques and control the LOS toward the direction of a target. Two-axis gimbals can be of two main types, namely Yaw-Pitch and Swing-Roll type. In this article, we focus on investigating mathematical models of two-axis gimbals, which describe the impact of cross-disturbance torques on their stability and control performance. Simulations were conducted to compare advantages and disadvantages of the two types of two-axis gimbals.
Aim. To study mathematical models describing the impact of cross-disturbance torques on the stability and control performance of two-axis gimbals.
Materials and methods. Mathematical models of two-axis gimbal systems were synthesized by the Lagrange method. The operation of two-axis gimbal systems was simulated in the Matlab-Simulink environment. Results. Mathematical models and structural diagrams of the synthesized Yaw-Pitch and Swing-Roll gimbals were obtained. The conducted simulations of typical cases revealed different cross-disturbance effects.
Conclusion. Motion equations for Swing-Roll and Yaw-Pitch gimbals were derived using similar methodology. The impact of cross-disturbance torques on gimbal systems was evaluated. The obtained results form a basis for selecting an optimal structure of tracking systems meeting the desired characteristics.
About the Authors
Ngoc Hung Nguyen
Le Quy Don Technical University
Viet Nam
Viet Nam
Ngoc Hung Nguyen, Master in "Control and Automation Engineering" (2014), postgraduate student, lecturer at the Department of Aerospace Control Systems
236 Hoang Quoc Viet St., Bac Tu Liem, Ha Noi
Van Phan Do
Le Quy Don Technical University
Viet Nam
Viet Nam
Van Phan Do, PhD (Eng.) (2014), lecturer at the Department of Aerospace Control Systems
236 Hoang Quoc Viet St., Bac Tu Liem, Ha Noi
Hoa Tien Vu
Le Quy Don Technical University
Viet Nam
Viet Nam
Hoa Tien Vu, PhD (Eng.) (2005), Associate Professor (2014), specialist in systems engineering control and automation, visiting lecturer at the Department of Aerospace Control Systems
236 Hoang Quoc Viet St., Bac Tu Liem, Ha Noi
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Review
For citations:
Nguyen N.H., Do V.P., Vu H.T. Estimating Disturbance Torque Effects on the Stability and Control Performance of Two-Axis Gimbal Systems. Journal of the Russian Universities. Radioelectronics. 2022;25(4):63-71. (In Russ.) https://doi.org/10.32603/1993-8985-2022-25-4-63-71
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