舰船电力系统的稳定性

舰船电力系统的稳定性，对于舰船来说，具有特别重要的意义。舰船长期航行于海洋上，当其发生故障时，不可能立刻得到岸上的支援，而如果重要部件发生故障，可能会发生船毁人亡的悲剧，这就使得舰船对电力供应的依赖性非常大，它要求舰船电力系统不仅能在一般情况下保证船上用电设备的正常运行，还必须保证在特殊情况下具有一定的稳定性，能够最大限度的保障和提高舰船的生命力。此外，随着舰船电力系统规模的不断增加，传统的基于经验的稳定性分析方法，已经不能满足舰船电力系统运行的要求。

首先，本文论述了课题的研究背景与研究意义；阐述了舰船电力系统的概念、组成及其特点。

其次，阐述了电力系统稳定性的有关概念与定理；介绍了常用的稳定性分析方法；接着对舰船电力系统的非线性数学模型进行了详细的分析，并在模型中考虑了参数摄动和外界常值扰动对系统的影响。

再次，将反步法引入到自适应控制中，设计了系统的鲁棒自适应控制器，并用MATLAB语言编写了仿真程序，进行了计算机仿真。计算机仿真的结果都表明该控制器具有良好的控制效果，系统的功角特性得到了良好的控制。当系统中具有参数不确定性和外界常值扰动时，该控制器具也能够保证系统具有良好的稳定性，可以很快的回到平衡状态。

最后，将模糊控制与滑模变结构控制相结合，设计了系统的模糊变结构控制器，并用MATLAB语言编写了仿真程序，进行计算机仿真。计算机仿真结果都表明，与传统的滑模变结构控制器相比，该控制器消弱了滑模变结构控制中所固有的“抖振”现象，且具有良好的控制效果，系统的功角特性得到了良好的控制。在系统存在参数摄动时，该控制器也具有较强的鲁棒性，可以使系统很快的回到平衡状态。

Ships power system stability, and ships are particularly important for a long time. ships sail on the oceans, as it broke down, could not immediately received the support of the shore, and if an important component failure may be in the crash of the tragedy that the ship due to the electricity supply is very large, its power to adapt the system can not only in general to ensure that the ship in the normal operation，but also ensure that in exceptional circumstances have to the stability, the maximum security and improving the viability of the ship. in addition, with ships the size of the power system increases, the traditional based on experience of stability analysis, will not be able to meet the requirements of ships power systems.

Firstly, this paper discusses the background study the subject of research and meaningful ；the ships of the concept of power system, and features. secondly, the power system stability of the relevant concepts and theorems ；introduced a stability analysis methods ；to adapt the power systems of the nonlinear models made

detailed analysis, and was considered a model parameters and outside 常值disturbance to the system.

Again, will be introduced to the steps to control, the design of the system to control and matlab languages in the emulator, computer simulations. the computer simulation results show that the controller has good control, the work of the corner of the system properties have a control system. as a parameter uncertainty and disturbance 常值the outside the control device can guarantee system has good stability, you can quickly back to balance。

Finally, will be blurred 滑模变control and control structures, a system design of structure and become a blur in the emulator matlab languages, computer simulations. the computer simulation results show that the traditional modes of the change in structure, the controller crippled 滑模变structure inherent in control of the "out" shake, and with good control, the system work of the characteristics of the good of control. In the system is a parameter, the controller also have strong robustness of systems, you can make a quick return to the balance.