China Mechanical Engineering ›› 2011, Vol. 22 ›› Issue (24): 2958-2961.

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Analysis of Stepper Motor Velocity Saturation Nonlinearity

Xu Hongwei1,2;Xu Fang1;Zhang Ren1
  

  1. 1.Key Laboratory of E&M,Ministry of Education & Zhejiang Province,Zhejiang University of Technology,Hangzhou,310032
    2.China Jiliang University,Hangzhou,310018
  • Online:2011-12-26 Published:2011-12-29
  • Supported by:
     
    International S&T Cooperation Program of China( No. 2005DFA70380);
    National Natural Science Foundation of China（No. 60905034）

步进电机速度饱和非线性特性分析

徐红伟1,2;胥芳１;张任1
  

  1. １.浙江工业大学特种装备制造与先进加工技术教育部/浙江省重点实验室,杭州,310032
    2.中国计量学院,杭州,310018
  • 基金资助:
    国际科技合作重点项目(2005DFA70380)；浙江省重点学科建设基金资助项目(102090314)；国家自然科学基金资助项目(60905034) 
    International S&T Cooperation Program of China( No. 2005DFA70380);
    National Natural Science Foundation of China（No. 60905034）

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Abstract:

The velocity saturation nonlinear characteristics of stepper motor tracking control with the describing function method was studied herein. Research results
show that, along with the rotation excitation field amplitude or frequency of the
stepper motor increases, stepper motor output will gradually appear distortion
component; when the product of excitation magnetic field amplitude and frequency is greater than a certain value, stepper motor output appears complete distortion. If distortion degree is
bigger,the stepper motor output nonlinearity is stronger and frequency characteristics
are worse.Step motor digital servo valve velocity saturation nonlinearity simulation
proves the effectiveness of the analyses.

Key words: stepper motor, velocity saturation nonlinearity, describing function method, frequency characteristics

摘要：

用描述函数法分析了步进电机跟踪控制的速度饱和非线性特性,研究表明：随着步进电机旋转激励磁场的幅值或频率的增大,电机输出将逐渐出现部分失真;当激励磁场的幅值与频率的乘积大于某个特定值时,输出表现为完全失真;失真程度越大,步进电机输出非线性越强,频率特性越差。步进电机数字伺服阀速度饱和非线性的仿真验证了分析的有效性。

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