现代控制理论与交流电机调速(Ⅴ)——滑模变结构控制

Modern control theory and speed adjustment of AC motor——variable structure control with sliding mode

介绍变结构系统的基本概念、数学表达设计问题及其在交流电机调速系统中的应用。阐述滑模理论在变结构系统中的重要作用。指出设计变结构控制系统的核心思想是通过不连续控制,强迫这种类型的运动朝向状态空间的某个特定区域(滑动流形)并保持下去;同时指出,对于非线性不确定性系统,采用滑模变结构控制可能使跟踪误差最小化,并使复杂过程与系统控制的工程实现相对简单。

It is introduced the basic concept, mathematical expression artd design problems of the variable structure system and the application of AC motor speed adjustment system. The importance of the sliding mode theory, in the variable structure system is expressed. It is pointed out that the core idea in the design of variable structure control system is to fore the movement towards a specific area in the state space and keep it. For non-linear and non-specific system, the tolerance could be minimized through the variable structure control with stiding mode and the complex procedures as well as the engineering of system control is fairly simplified.