基于LMI的开式循环涡轮机系统鲁棒控制器设计

【作者】 肖楠；

【导师】 钱志博；

【作者基本信息】 西北工业大学 ， 武器系统与运用工程， 2007， 硕士

【摘要】 鱼雷的战术性能主要取决于其采用的动力装置，而鱼雷动力装置的综合性能在很大程度上又取决于其采用的控制系统。随着科技的迅猛发展，现代海战对鱼雷的航程、航速、航深及机动性要求越来越高，在鱼雷动力装置中应用先进的控制系统，提高动力装置的综合性能，就显得尤为迫切。 本论文以开式循环涡轮机系统为研究对象，建立了描述其运动学和动力学特性的非线性数学模型，并对该模型进行了仿真，分析了涡轮机系统的稳态特性和过渡过程。通过对已建立的数学模型进行线性化处理，得到了涡轮机系统的结构参数摄动的状态空间模型。之后基于线性矩阵不等式(LMI)方法，求解得到了涡轮机系统的鲁棒状态反馈控制器。对加入反馈控制之后的系统进行仿真，仿真结果表明设计的控制器较好的实现了鱼雷的定深变速，定速变深以及变深变速等机动要求。更多还原

【Abstract】 The tactical qualities of torpedo depend on the torpedo propulsion system. When a propulsion system is selected, the qualities of the propulsion were mostly decided by the control system applied on it. Higher and higher qualities were required to adapt to the modern warfare. Modern torpedoes need to be faster, cruise father and submerge deeper. It is urgent to apply advanced control theory to the design of the control system.In this thesis, open-loop turbine engine is studied. The exact kinematic and dynamic formulas of open-loop turbine engine have been built. The stationary state and the transition process have been analyzed. The structural parameters perturbed state-space model has been built through the linearization of the kinematic and the dynamic formulas. And the state feedback controller was designed based on the LMI (Linear Matrix Inequality) theory. The simulation result with the state feedback indicates that the controller can promote the performance of the whole system. In the speed- changing process of the same depth, the respond time was decreased. And there is hardly any error in the depth-changing process of the same speed.更多还原