摘要
针对摩擦力矩对高精度转台速度稳定性能的影响,考虑到转台系统的实际工作情况,本文提出了一种基于变结构的双闭环控制方法。该方法根据变结构控制的不变性特点,采用指数趋近律规则,构造了基于变结构的双闭环控制方式。通过比对传统双闭环控制和基于变结构的双闭环控制在转台系统低速转动时的仿真分析及实验结果,表明本文提出的基于变结构的双闭环控制比传统双闭环控制可以更有效的克服摩擦力矩对高精度转台速度稳定性的影响,提高转台的速度稳定性能。
In consideration of the requirement and structure of the practical turntable, the indispensable research on the force of friction is analyzed, which impacts the speed stability performance. A kind of control strategy based on the Variable Structure Control （VSC） is introduced. According to the invariant features and the exponentially approaching rule of the VSC, the new control strategy is designed by the application of traditional double closed loop control system and VSC system. According to the simulating results and the debugging results of the control strategy on the practical turntable system, we can validate that it agrees to the simulating results, which demonstrate the effectiveness of the control strategy based on VSC in improving the speed stability performance.
出处
《光电工程》
CAS
CSCD
北大核心
2011年第3期14-18,共5页
Opto-Electronic Engineering
关键词
高精度转台
速度稳定性
双闭环控制
变结构控制
high precision turntable
stable speed
double closed loop control system
variable structure control
