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郎佳红,何志伟,邱伟,等. 基于STC32G的电梯抱闸电源设计[J]. 安徽工业大学学报(自然科学版),xxxx,x(x):x-xx. doi: 10.12415/j.issn.1671-7872.24028
引用本文: 郎佳红,何志伟,邱伟,等. 基于STC32G的电梯抱闸电源设计[J]. 安徽工业大学学报(自然科学版),xxxx,x(x):x-xx. doi: 10.12415/j.issn.1671-7872.24028
LANG Jiahong, HE Zhiwei, QIU Wei, LU Mingjin, CHENG Jie. Process Design of Elevator Brake Power Supply Based on STC32G[J]. Journal of Anhui University of Technology(Natural Science). DOI: 10.12415/j.issn.1671-7872.24028
Citation: LANG Jiahong, HE Zhiwei, QIU Wei, LU Mingjin, CHENG Jie. Process Design of Elevator Brake Power Supply Based on STC32G[J]. Journal of Anhui University of Technology(Natural Science). DOI: 10.12415/j.issn.1671-7872.24028

基于STC32G的电梯抱闸电源设计

Process Design of Elevator Brake Power Supply Based on STC32G

  • 摘要: 针对抱闸电源在模拟芯片控制下存在成本高、可控性差等不足,设计1种基于数字控制器的抱闸电源系统。以STC32G单片机为控制器,通过整流滤波电路将交流电压转换成直流电压,再通过Buck变换器进行降压处理对抱闸线圈供电;由STC32G自带的12位高精度模拟数字转换器(ADC)模块对电压电流进行采样,且实时调节电压反馈;以滑模控制理论为基础,对趋近律函数进行改进,设计新型非奇异终端滑模控制器,进一步提高抱闸电源的动态响应和抗干扰性能;最后,搭建基于MATLAB/Simulink的仿真模型和STC32G的实验平台进行仿真和实验,验证设计电源的有效性。结果表明:在抱闸电源系统中相比于PI控制器,新型非奇异终端滑模控制器在参考电压改变和负载突变的情况下电压恢复时间分别提高了62.5%和66.7%以上,设计的抱闸电源系统具有较好的动稳态性能和抗干扰能力。

     

    Abstract: Aiming at the deficiencies of high cost and poor controllability of holding brake power supply under analog control chip, a kind of holding brake power supply system based on digital controller was designed. Using the STC32G microcontroller as the controller, the AC voltage is converted into DC voltage through a rectification and filtering circuit, and then the Buck converter was used for voltage reduction to supply power to the holding brake coil.STC32G built-in 12 bit high-precision analog-to-digital converter (ADC) module was used to sample voltage and current, and adjust voltage feedback in real-time.Based on sliding mode control theory, the approaching law function was improved, and a new type of non singular terminal sliding mode controller was designed to further improve the dynamic response and anti-interference performance of the holding brake power supply.Finally, a simulation model based on MATLAB/Simulink and an STC32G experimental platform was built to verify the effectiveness of the designed power supply.The results show that compared to the PI controller, the new non singular terminal sliding mode controller in the bandgap power supply system improves the voltage recovery time by more than 62.5% and 66.7% under the conditions of reference voltage change and load mutation, respectively. The designed bandgap power supply system has good dynamic and steady-state performance and anti-interference ability.

     

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