| 引用本文: | 李 松,陈宗祥,刘 康,张武林,陈克难.改进型自抗扰控制在 DC / DC 变换器中的应用(J/M/D/N,J:杂志，M：书，D：论文，N：报纸).期刊名称,2023，40（5）：34-40 |
| CHEN X. Adap tive slidingmode contr ol for discrete2ti me multi2inputmulti2 out put systems[ J ]. Aut omatica, 2006, 42(6): 4272-435 |
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| 摘要: |
| 针对 DC / DC 变换器在实际应用中不断扩大,对输入波动、响应速度、稳定性等要求越来越高,而传统的 PID
控制算法无法在复杂的变换器控制系统中获得理想的控制效果,以 Buck 变换器为研究对象,提出了一种改进型自
抗扰控制策略。 在基于传统的线性自抗扰控制的基础上,对其进行广义数学分析,在传递函数中引入自定义的零
点,同时,对输入通道和测量的干扰,设计了测量滤波器,并设计了二阶自抗扰控制器。 最后,搭建以 DSP28377 为
控制器的硬件试验平台,对比分析传统 PI 控制和改进型自抗扰控制受干扰情况下的动态性能,验证了改进型自抗
扰控制的方案可行性,所提出的改进型控制策略不仅将传统的 PID 控制具有的缺点克服,又将其结构简单的特点
保留。 实验结果表明:较传统的 PID 算法而言,加载过程中,调节时间减少 125 μs,超调量较少 0. 8%;减载过程中,
调节时间减少 165 μs,超调量减少 2. 8%。 可以得出改进型自抗扰控制策略不但具备快速和高精度特点,还具有更
好的鲁棒性和抗扰动性能。 |
| 关键词: DC / DC 变换器 自抗扰控制 改进型自抗扰控制 |
| DOI： |
| 分类号: |
| 基金项目: |
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| Application of Improved Active Disturbance Rejection Control in DC / DC Converter |
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LI Song CHEN Zongxiang LIU Kang ZHANG Wuling CHEN Kenan
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School of Electrical and Information Engineering Anhui University of Technology Anhui Maanshan 243032 China
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| Abstract: |
| With the continuous expansion of DC / DC converter in practical application the requirements for input
fluctuation response speed and stability are higher and higher while the traditional PID control algorithm cannot obtain
ideal control effect in complex converter control system. Taking Buck converter as the research object an improved active
disturbance rejection control ADRC strategy is proposed. Based on the traditional linear ADRC a generalized
mathematical analysis is carried out and a self-defined zero point is introduced into the transfer function. At the same
time for the interference of input channel and measurement the measurement filter is designed and the second-order
ADRC is designed. Finally a hardware test platform with DSP28377 as the controller is built the dynamic performance
of traditional PI control and improved ADRC under interference is compared and analyzed and the feasibility of the
improved ADRC scheme is verified. The proposed improved control strategy not only overcomes the shortcomings of
traditional PID control but also retains its simple structure. The experimental results show that compared with the
traditional PID algorithm the adjustment time is reduced by 125 μs and the overshoot is less than 0. 8% during the
loading process. During the load shedding process the adjustment time is reduced by 165 μs and the overshoot is reduced
by 2. 8%. It can be concluded that the improved ADRC strategy not only has the characteristics of high speed and high
precision but also has better robustness and anti-disturbance performance. |
| Key words: DC / DC converter active disturbance rejection control improved ADRC |
