连续项 meaning in English
continuous item
Examples
- The dissertation refers to comparatively full literatures in the field of vsc , and the development history and characteristics of vsc are summarized , and the elementary concepts , elementary definitions , elementary properties , elementary principles and design methods are particularly introduced , and the causes of the chattering phenomenon are systematically analysed , and the study status of the chattering phenomenon and the main methods to eliminate the chattering are elaborated . for the deficiencies of traditionary methods , three improved methods are developed , which are improved exponent reaching law solution , variable boundary layer solution and the solution by adding an auxiliary continuous control term . for uncertain linear systems , an adaptive fuzzy integral variable structure control stategy ( afivsc ) is put forward to eliminate the chattering around the sliding plane , which introduces fuzzy logic to soften the non - linear discontinuous sig nal in the control variable and utilizes adaptive theory to adjust output membership function according to how much the uncertainty of the system is
比较全面地查阅了关于变结构控制理论的文献，总结了滑模变结构控制的发展历史和特点，详细介绍了变结构控制的基本概念、基本定义、基本性质、基本原理以及设计方法；系统分析了变结构控制系统抖振产生的机理，并阐述了国内外目前对抖振问题的研究现状以及消除抖振的主要方法；针对传统抑制和消除抖振方法的不足，改进了传统方法，得到了三种新的消除抖振的方法? ?即改进的指数趋近律法、可变边界层法和附加连续项法；针对不确定性线性系统，在变结构控制策略中引入模糊逻辑和自适应理论来消除滑动平面上的抖振，提出了一种自适应模糊积分变结构控制方案( afivsc ) ，利用模糊逻辑来柔化控制量中非线性不连续部分，采用自适应理论，根据系统不确定性大小在线调整模糊输出量的隶属函数，另外，鉴于模糊控制本质上是有静差的，所以本文选择了带积分项的切换函数，由于积分项的存在使系统较正为无静差系统。