随机非线性量化反馈系统的自适应模糊控制研究

项目名称： 随机非线性量化反馈系统的自适应模糊控制研究

项目编号： No.61503223

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 自动化技术、计算机技术

项目作者： 王芳

作者单位： 山东科技大学

项目金额： 20万元

中文摘要： 本项目旨在研究随机非线性量化反馈系统的自适应模糊控制问题。在新设计的量化器基础上，提出量化器输出的一种非线性分解策略，建立一套全新的自适应模糊控制方案补偿量化误差，系统地解决随机非线性系统的量化反馈控制研究的难点，开辟随机非线性系统量化控制的新途径。主要研究内容包括：1.研究具有输入量化的随机非线性系统的反馈控制问题，获取自适应模糊控制器的设计方法。2.研究同时具有输入非线性和输入量化的随机非线性系统的性能控制问题。在输入非线性参数未知及量化参数时变的情况下，尝试设计出新的控制方案。3.针对系统状态不可测的随机非线性量化系统，设计一种与系统匹配的观测器，提出相应的输出反馈控制方案以确保系统具有良好的控制性能。4.研究具有输入量化和输出量化的随机非线性系统的控制问题，设计出能够保证系统稳定的控制器。该项目的成功研究将为量化控制理论的发展提供新思路，推动我国网络化控制系统技术的发展。

中文关键词： 自适应模糊控制；Backstepping设计技术；随机非线性系统；量化反馈控制

英文摘要： In this project, the quantized feedback control problems for stochastic nonlinear systems are investigated by employing the adaptive fuzzy theory. Based on the designed time-varying hysteretic quantizer, a kind of nonlinear decomposition strategy for an output of quantizer is put forward, and then an entirely novel adaptive fuzzy control scheme is to be established to compensate a quantization error. As a result, the difficulties of quantized feedback control for stochastic nonlinear systems are coped with systematically so as to work out a way to the quantized control of stochastic nonlinear systems. The main works include: 1.The adaptive fuzzy controller is designed for stochastic nonlinear systems with quantized input. 2. The tracking control problem for stochastic nonlinear systems with quantized input and input nonlinearity is investigated, and a novel adaptive fuzzy control scheme is proposed while the parameters of input nonlinearity are unknown and the parameter of the quantizer is time-varying. 3. A new observer matching the stochastic nonlinear systems with immeasurable state is designed, and then a corresponding output feedback control scheme is proposed to ensure the good performance of the systems. 4. An adaptive fuzzy output feedback controller is constructed for stochastic nonlinear systems with quantized input and quantized output. The research achievements in this project will provide new ideas for the development of the quantized feedback control, and will promote the development of the networked system control technology of our country.

英文关键词： adaptive fuzzy control;Backstepping design technique;stochastic nonlinear system; quantized feedback control