| 一种引入电流前馈的DC/DC数字控制算法的设计与实现 |
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| 引用本文： | 杜红霞.一种引入电流前馈的DC/DC数字控制算法的设计与实现[J].电子器件,2012,35(6):727-730. |
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| 作者姓名： | 杜红霞 |
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| 作者单位： | 陕西科技大学电气与信息工程学院 |
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| 摘 要： | 根据BUCK DC/DC变换器工作原理推导出以电感电流为变量的一种易于实现的数字控制策略。将该方法以电流前馈方式与带滞环PID控制方法相结合,形成一种电流前馈控制策略。并以Buck DC/DC为例进行仿真与实现。仿真和实验结果表明:该控制策略能够使Buck DC/DC具有良好的输入电压调整特性及开关误差校正能力,符合动态性能要求较高的数字控制应用。与常规控制方法相比,具有算法实现简单,响应速度快,电压过充小,整定参数少的优点。
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| 关 键 词： | BuckDC/DC变换器 带滞环的PID控制 数字控制 动态性能 |
The design and implementation of a DC/DC digital control method with the introduction of feed-forward current |
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| DU Hongxia,ZHENG Enrang.The design and implementation of a DC/DC digital control method with the introduction of feed-forward current[J].Journal of Electron Devices,2012,35(6):727-730. |
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| Authors: | DU Hongxia ZHENG Enrang |
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| Affiliation: | (Electrical and Information Engineering,Xi’an,Shaanxi University of Science and Technology,Xi’an 710021,China) |
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| Abstract: | Abstract: According to the working principle of the BUCK DC/DC converter, a digital control strategy easy to implement based on the inductor current is derived in this paper. And combine it with the PID control method with hysteresis, a DC-DC control strategy with feed-back current is designed. And as the Buck DC-DC an example, complete the simulation and implementation. The Simulation and experimental results show that the proposed control strategy enables the Buck converter with good input voltage adjustment and switch error correction capability. Meet the digital control application require high dynamic performance. And compared with normal conventional control method, it has the advantages of easy to implement, simple algorithm, fast response, small overshoot, etc. |
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| Keywords: | Buck DC/DC converter: PID control with hysteresis loop digital control dynamic performance |
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