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首页> 外文期刊>International Journal of Control >MIMO H-infinity control of three-axis ship-mounted mobile antenna systems
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MIMO H-infinity control of three-axis ship-mounted mobile antenna systems

机译:MIMO H-INFINITY控制三轴船舶移动天线系统

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摘要

The need for on-line information in any environment has led to the development of mobile satellite communication terminals. These high data-rate terminals require inertial antenna pointing error tolerance within fractions of a degree. However, the base motion of the antenna platform in mobile applications complicates this pointing problem and must be accounted for. Gimbaled motorised pedestals are used to eliminate the effect of disturbance and maintain uninterrupted communication. In this paper, a three-axis ship-mounted antenna on a pedestal gimbal system is studied. Based on the derived dynamic model of the antenna pedestal multi input-multi output PID and H-infinity linear controllers are designed to stabilise the antenna to keep its orientation unaltered towards the satellite while the sea waves disturb the antenna. Simulation results are presented to show the stabilisation performance of the system with the synthesised controllers. It is shown through performance comparison and analysis that the proposed H-infinity control structure is preferable over PID controlled system in terms of system stability and the disturbance rejection.
机译:在任何环境中对在线信息的需求导致了移动卫星通信终端的开发。这些高数据速率终端需要惯性天线指向程度的级分钟内的误差容差。然而,移动应用中的天线平台的基本运动使这个指点问题复杂化并且必须考虑。 Gimbaled电动台座用于消除干扰的效果并保持不间断的通信。本文研究了基座万向节系统上的三轴乘坐天线。基于天线基座的衍生动态模型多输入 - 多输出PID和H-Infinity线性控制器的设计用于稳定天线以使其取向不会朝向卫星的定向,而海浪扰乱天线。提出了仿真结果以显示与合成控制器系统的稳定性能。通过性能比较和分析,在系统稳定性和扰动抑制方面,在PID控制系统中优选提出的H-Infinity控制结构。

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