交流伺服系统谐振频率偏移现象及陷波策略研究  

Research on Resonant Frequency Deviation of AC Servo System and Notch Strategy

作　　者：杜大伟 赵云 DU Dawei;ZHAO Yun(School of Electrical and Electronic Engineering,Hubei University of Technology,Wuhan 430068,China)

机构地区：[1]湖北工业大学电气与电子工程学院,武汉430068

出　　处：《组合机床与自动化加工技术》2025年第3期119-123,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：湖北省中央引导地方科技发展资金项目(2023EGA027)。

摘　　要：交流伺服系统的传动装置具有一定柔性,易引发机械谐振,影响系统性能。工业上常采用陷波滤波器抑制机械谐振,然而谐振频率偏移现象会影响传统陷波方法的效果。针对上述问题,建立双惯量系统模型,结合控制器模型分析谐振频率偏移的机理,提出一种陷波策略,通过改进SOGI-FLL的抗斜坡信号干扰能力,使其能从暂态响应信号中辨识出系统自然谐振频率,以正确设置陷波滤波器。仿真结果表明,在谐振频率偏移情况,通过该方法设置的陷波滤波器对谐振振幅的抑制效果优于传统方法。The transmission device of the AC servo system has a certain degree of suppleness,which can easily cause mechanical resonance and affect system performance.In industry,notch filters are commonly used to suppress mechanical resonance,but the problem of resonance frequency deviation can affect the effectiveness of traditional notch methods.In response to the above issues,a dual inertia system model is established,and the mechanism of resonant frequency deviation is analyzed in combination with the controller model.A notch strategy is proposed,which improves the anti-slope signal interference capability of SOGI-FLL,enabling it to identify the natural resonant frequency of the system from transient response signals and correctly set the notch filter.The simulation results show that in the case of resonance frequency deviation,the notch filter set by this method has a better suppression effect on resonance amplitude than traditional methods.

关 键 词：交流伺服系统 谐振抑制 谐振频率辨识 陷波滤波器 

分 类 号：TH165[机械工程—机械制造及自动化] TG659[金属学及工艺—金属切削加工及机床]