振镜系统自适应离散滑模控制器设计与仿真  

Design and Simulation of Adaptive Discrete Sliding Mode Controller for Galvanometer System

作　　者：王云龙 陈光胜[1] Wang Yunlong;Chen Guangsheng(School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学机械工程学院,上海市200093

出　　处：《农业装备与车辆工程》2021年第12期9-12,共4页Agricultural Equipment & Vehicle Engineering

基　　金：国家重点研发计划“典型硬脆构件的超快激光精密制造技术及装备”(2017YFB1104600,2017YFB1104602)。

摘　　要：针对数字式激光振镜系统易受参数变化、外部扰动等不确定性因素的影响,采用了一种基于趋近率的自适应离散滑模变结构控制方案。首先建立振镜系统的数学模型,然后基于指数趋近率建立滑模变结构控制器,并通过自适应控制在线调整趋近律中的控制增益来调节系统状态轨迹到达滑模面的趋近速度,提高了系统动态品质,最后在计算机软件中建立振镜系统及控制器模型并进行仿真实验并用相应指标进行评价。仿真结果表明受控系统具有良好的性能,能够满足实际应用条件。An adaptive discrete sliding mode variable structure control scheme based on approach rate is proposed for the digital laser oscillator system which is subject to the uncertainties such as parameter variation and external disturbance.First,the mathematical model of the vibroscope system is established.Then,the sliding mode variable structure controller is established based on the exponential approach rate,and the approach speed of the system state trajectory to the sliding mode surface is adjusted online by the adaptive control gain in the approach law,which improves the dynamic quality of the system.Finally,the model of galvanometer system and controller is established in the computer software,and the simulation experiment is carried out and the corresponding indexes are evaluated.The simulation results show that the controlled system has good performance and can meet the practical application conditions.

关 键 词：振镜系统 趋近率 自适应 离散滑模 变结构控制 计算机仿真 

分 类 号：TP273.2[自动化与计算机技术—检测技术与自动化装置]