Development of a hydraulic variable-diameter threshing drum control system for combine harvester part II: Controller design and field performance

IF 4.4 1区农林科学 Q1 AGRICULTURAL ENGINEERING

Biosystems Engineering Pub Date : 2025-04-17 DOI:10.1016/j.biosystemseng.2025.104160

Yanbin Liu , Yaoming Li , Kuizhou Ji , Zhiwu Yu , Zheng Ma , Lizhang Xu , Changhe Niu

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Abstract

It is important to adjust the diameter of the hydraulic variable-diameter threshing drum adaptively according to the change of feeding rate for the combine harvester. To solve the problem that the drum diameter cannot be adaptively controlled, the variable universe fuzzy PID (VUFPID) controller with adaptive contracting-expanding factor was developed and its field performance was verified. The VUFPID controller with adaptive contracting-expanding factor and the fuzzy PID controller were established using MATLAB, and the simulation was compared and analysed. The simulation results showed that the VUFPID controller with adaptive contracting-expanding factor had better control characteristics. Field experiment results showed that the adaptive control system can adjust the drum diameter to change the threshing gap in real time according to the change of feeding rate. When the adaptive control system was turned on, the average grain entrainment loss rate was reduced by 8.72 % compared with that without the adaptive control system.

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联合收割机液压变直径脱粒鼓控制系统的研制。第二部分：控制器设计与现场性能

针对联合收割机进料速率的变化，对液压变径脱粒鼓的直径进行自适应调整是十分重要的。针对滚筒直径不能自适应控制的问题，设计了自适应缩胀因子的变域模糊PID （VUFPID）控制器，并对其现场性能进行了验证。利用MATLAB建立了带自适应伸缩因子的VUFPID控制器和模糊PID控制器，并对仿真结果进行了对比分析。仿真结果表明，自适应扩缩因子的VUFPID控制器具有较好的控制特性。现场试验结果表明，该自适应控制系统可以根据进料速率的变化，实时调节滚筒直径，改变脱粒间隙。当自适应控制系统开启时，平均颗粒夹带损失率比未开启时降低了8.72%。

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来源期刊

Biosystems Engineering 农林科学-农业工程

CiteScore

10.60

自引率

7.80%

发文量

239

审稿时长

53 days

期刊介绍： Biosystems Engineering publishes research in engineering and the physical sciences that represent advances in understanding or modelling of the performance of biological systems for sustainable developments in land use and the environment, agriculture and amenity, bioproduction processes and the food chain. The subject matter of the journal reflects the wide range and interdisciplinary nature of research in engineering for biological systems.