使变模糊

It's an effective measure of fast valving in improving the dynamic stabilities of power system and preventing the overspeed of steam turbines, but the fast valving technique available can satisfy the need of modern steam turbines no more. On the basis of the new type fluid logic valve, which combines the regulating systems and safety systems happily, the steam turbine EHC based on new principle is put forward, one of its outstanding characteritics is, the fast valving is operating in a closed control loop. For the implementation of control for steam generator regulation and safety systems with nonlinear mult-operating modes, a new methodology for designing a fuzzy logic controller is proposed, which is based on the combination of"error phase plane"and"variable universe of discourse". Application of a double-mode FLC with the new methodology is presented, the validity of the design methodolody is desmonstrated by test; A new methodolody is also presented to improve the design and tuning of a FLC using variable structure control theory.

本文还详细讨论了快关控制在提高电力系统暂态稳定性及超速保护中的应用，分析了现有的快关控制规律的局限性，研究出一种基于新型快关阀的汽轮机电液控制系统，其突出特点是使汽轮机闭环快关成为现实，指出这种基于新的组成原理与设计方法的汽轮机电液控制系统对不同工况下的适应能力；针对汽轮发电机组多工况、非线性的特点，提出一种把&误差相平面&方法与&可变论域&思想有机结合的双模FLC设计与调整的新方法，试验结果表明该系统具有良好的动、静态特性；为改善FLC控制规则的设计与调整，作者还介绍了一种把滑模变结构理论成功应用于模糊系统设计的新方法。

For motor asynchronous vector control system for electrical parameters and load factors such as fluctuations in the deterioration of the problem, design a two-dimensional fuzzy controller as a self-adjusting induction motor vector control system the speed regulator, the induction motor vector Control system not only dynamic and static performance have been improved, but also is robust.

针对异步电机矢量控制系统因电机参数变化和负载波动等因素性能变差的问题，设计了一种二维自调整模糊控制器作为异步电机矢量控制系统的速度调节器，使异步电机矢量控制系统不仅动态和稳态性能都得到提高，而且具有较强的鲁棒性。

The linear combination of the error and its derivative are selected as switch surface, and then the tendency law method is used to design VSC control law. T-S FNN is imported, so that the actual output can trail the given value.

选择误差及其各阶导数的线性集结作为切换面，用趋近律方法设计变结构控制律，引入T-S模糊神经网络，使实际输出始终跟踪给定值。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。