文章摘要
非最小相位时滞系统的新型Smith自抗扰控制及其鲁棒性
A new type of active disturbance rejection control with Smith and its robustness for non-minimum phase time-delay systems
投稿时间:2018-07-12  修订日期:2018-08-26
DOI:
中文关键词: 不稳定极点  时滞系统  改进Smith预估器  自抗扰控制  鲁棒稳定性
英文关键词: unstable pole  time-delay system  modified Smith predictor  ADRC  robustness and stability
基金项目:国家自然科学基金(61573199,61573197).
作者单位E-mail
陈增强 南开大学 chenzq@nankai.edu.cn 
王永帅 南开大学  
孙明玮 南开大学  
孙青林 南开大学  
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中文摘要:
      非最小相位对象是工业控制中的典型难题,尤其当不稳定极点或零点与时滞同时存在时,系统更难实现稳定控制。基于含不稳定极点的一阶时滞对象,通过引入两个比例反馈设计了新型Smith自抗扰控制器,分析了两个反馈的作用机理,并得到了系统模型误差的最大允许边界。当对象参数摄动时,运用仿真研究了系统的频域和时域特性,绘制了不同模型下的最大误差边界值与频率的关系。最后,通过蒙特卡罗试验验证了新型Smith自抗扰控制器的抗扰能力优于改进Smith-PID控制器。
英文摘要:
      Non-minimum phase plant is the typical problem in industrial control, especially when unstable poles or zeros and time-delay exist simultaneously, and it is more difficult to achieve stable control. Based on first-order time-delay plant with unstable pole, a new type of ADRC-Smith is designed by introducing two proportional feedbacks along with the mechanism analysis, and the maximum boundary of model error is obtained. When there is parameter perturbation, it analyzes the characteristics of systems in frequency and time domain, and obtains the relationship between the maximum error boundary and frequency for different plants. Finally, Monte Carlo test is used to verify that the disturbance rejection capability for the new type of ADRC-Smith is better than modified PID -Smith controller.
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