A two-axis gimbaled stabilization system in air vehicles must stabilize the line of sight of the payload toward a target against the external motion induced by air vehicle maneuvering and aerodynamic forces. The target tracking and pointing performances of the air vehicles are largely affected by air vehicle motion decoupling capability. In this work, the $H_{\infty }$ controller design is carried out for a two-axis gimbal system. The plant model is generated using experimental frequency response data and mathematical formulation of the system. The mixed sensitivity problem is posed and weighting functions are selected so that they not only fulfill all the design goals but also accommodate the modeling uncertainties. The stabilization loop is designed and implemented in digital signal processor-based hardware for only one axis (in azimuth).

航空器中的两轴万向稳定系统必须稳定有效载荷朝向目标的视线，以抵抗由航空器操纵和空气动力引起的外部运动。航空器的目标跟踪和指向性能在很大程度上受到航空器运动解耦能力的影响。在这项工作中，$H_{\infty }$控制器设计是针对两轴云台系统进行的。使用实验频率响应数据和系统的数学公式生成工厂模型。提出了混合灵敏度问题，并选择了加权函数，以便它们不仅可以满足所有设计目标，而且可以适应建模的不确定性。稳定环路是在仅基于一个轴（方位角）的基于数字信号处理器的硬件中设计和实现的。