基于混合维云模型定性推理的调距桨螺距控制

云模型是采用期望值Ex，熵En和超熵He来描述定性概念的一种数学方法，它将定性概念所具有的模糊性、随机性有机地结合在一起，是实现定量与定性相互转换的一种新途径。文中阐述了定性概念的一维和二维云模型数学描述，提出了基于混合维云模型的混合推理方法、复杂控制规则的简化方法，设计了一种新型的智能控制器——云控制器，并将其应用于调距桨螺距控制过程中。仿真结果表明，该控制器简易、直观、控制性能良好、鲁棒性强，较常规模糊控制具有更好的控制品质。

Controllable Pitch Propeller Control Based on Qualitative Reasoning of Variant Dimension Cloud Model

The cloud model is a mathematical representation of a qualitative concept with expected value Ex, entropy En and hyper entropy He , integrates the fuzziness and randomness of a qualitative concept in a unified way, and is a new method for transformation between qualitative and quantitative. Emphasis is laid on such one and two dimensional cloud models of qualitative concept. A hybrid reasoning method based on variant dimension cloud model and a simplified method for the complex control rules are proposed. A new intelligent controller cloud controller is designed, and applied in the controllable pitch propeller system. Simulational result shows that the cloud controller is simple and easy, has good control performance, strong robustness, and a better control quality than the normal fuzzy controller.