交流永磁伺服系统的分数阶滑模控制研究  

Fractional order sliding mode control research of AC permanent magnetic servo system

作　　者：柴华伟[1] 张锁荣[1] 周江明[1] 范真[1] 李志刚[2] 

机构地区：[1]江苏理工学院,江苏常州213001 [2]南京理工大学,南京210094

出　　处：《工业仪表与自动化装置》2015年第3期10-12,共3页Industrial Instrumentation & Automation

基　　金：江苏省科技项目(BY2013025-2)支持

摘　　要：某型火箭炮交流永磁伺服系统的转动惯量、系统的模型参数以及外部干扰等,在火箭炮发射过程控制中是时变的,因此导致数学模型参数严重不确定,是一个典型的非线性、时变不确定系统。如何确保系统在如此恶劣的工况,依然拥有良好的性能,即具备较强的鲁棒性是控制领域的一大难题。现代控制理论中的滑模控制具有实现简单、鲁棒性强的优势,已经得到了广泛应用。但是对于抖振仍无能为力,该文将一种分数阶滑模控制策略应用到系统控制中,利用分数阶系统随时间缓慢衰减的特性减小抖振。实验结果表明,与常规PID控制器相比,该控制器可削减抖振,减小误差,同时具有较强的鲁棒性。Rotation inertia, model parameters and outer disturbance of an AC PMSM system are continuously varying during launching, thus its mathematical model is seriously uncertain, and it is a typical nonlinear, time varying system. How to guarantee the system possess good performances under such a bad circumstance is a big problem for control field. Sliding mode control （ SMC） of modern control theory has simple realization and strong robustness, and is widely used. But it is useless to chattering. Based on such a background, a fractional order SMC is utilized to system control, which uses character of slow descending versus time of fractional order system. Experimental results show that compared with PID control, this controller can decrease chattering and error, and has strong robustness.

关 键 词：伺服系统 分数阶 滑模控制 

分 类 号：TP271.72[自动化与计算机技术—检测技术与自动化装置]