FENG G M, JIN M L.Study on control strategy of DC motor lifting system of vending machine[J].Journal of Henan Polytechnic University(Natural Science) ,2022,41(6):137-144.

doi:10.16186/j.cnki.1673-9787.2021050038

Received:2021/05/09

Revised:2021/07/09

Published:2022/11/25

Study on control strategy of DC motor lifting system of vending machine

FENG Gaoming, JIN Minglei

School of Electrical Engineering and Automation， Henan Polytechnic University，Jiaozuo 454000，Henan，China

Abstract:In order to improve the accuracy and speed of the position control system of DC motor，the differential negative feedback was added on the basis of the traditional three closed-loop system.By predicting the change trend of the position，the overshoot was restrained，the speed of the dynamic response of the system was ensured，and the anti-load-disturbance ability was improved.Under the differential negative feedback without overshoot，the feedforward compensation was introduced.Therefore，higher tracking performance and accuracy were obtained.Through simulation analysis，it was proved that the strategy had such charters as no overshoot，fast response，anti-load-disturbance and high performance tracking.The performance of the lifting and receiving device of the vending machine was improved.

Key words:lifting and receiving mechanism of vending machine;differential negative feedback;feedforward compensation;no overshoot;anti-load-disturbance

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