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Volume 15
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Article

Research on the Control System for the Conveying and Separation Experimental Platform of Tiger Nut Harvester Based on Sensing Technology and Control Algorithms

by
Sirui Chen
1,
Jiangtao Qi
1,*,
Jianping Gao
1,
Wenhui Chen
1,
Jiaming Fei
1,
Hewei Meng
1 and
Zhen Ma
2,3,*
1
College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China
2
School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
3
Key Laboratory of Modern Agriculture Equipment and Technology, Jiangsu University, Ministry of Education, Zhenjiang 212013, China
*
Authors to whom correspondence should be addressed.
Agriculture 2025, 15(1), 115; https://doi.org/10.3390/agriculture15010115
Submission received: 11 November 2024 / Revised: 25 December 2024 / Accepted: 5 January 2025 / Published: 6 January 2025
(This article belongs to the Section Digital Agriculture)
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Abstract

Enhancing the intelligence of Tiger nut harvesting equipment with the advancement of agricultural machinery is imperative. Mismatches between excavation feed rate and conveying-separating capacities hinder the efficiency of Tiger nut harvesters. A visualized Tiger nut harvesting platform was designed to address this, incorporating parameters like conveying speed, torque, vibration frequency, and excavation depth. The platform features a mechanical execution part and an automatic control system with speed, torque, frequency, and depth control modules. Mechanical design analysis defined control parameters and methods for each module. An adaptive B-PID controller was proposed for trajectory tracking, combining backstepping and PID. A control model accounting for motion damping and error compensation was derived. Simulink simulations compared B-PID with backstepping controllers, showing B-PID’s robustness and effective trajectory tracking. Actual experiments assessed mechanical-control coordination using relative error metrics. The results showed that the maximum relative error of rotation speed was 3.8%, the maximum relative error of frequency was 3.67%, and the maximum relative error of excavation depth was 1.5%. Correction models for excavation depth and excitation frequency parameters were established. This study offers a theoretical framework to advance the intelligent design of tiger nut harvesting machinery.
Keywords: tiger nut; harvester; transportation separation; automatic control; B-PID tiger nut; harvester; transportation separation; automatic control; B-PID

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MDPI and ACS Style

Chen, S.; Qi, J.; Gao, J.; Chen, W.; Fei, J.; Meng, H.; Ma, Z. Research on the Control System for the Conveying and Separation Experimental Platform of Tiger Nut Harvester Based on Sensing Technology and Control Algorithms. Agriculture 2025, 15, 115. https://doi.org/10.3390/agriculture15010115

AMA Style

Chen S, Qi J, Gao J, Chen W, Fei J, Meng H, Ma Z. Research on the Control System for the Conveying and Separation Experimental Platform of Tiger Nut Harvester Based on Sensing Technology and Control Algorithms. Agriculture. 2025; 15(1):115. https://doi.org/10.3390/agriculture15010115

Chicago/Turabian Style

Chen, Sirui, Jiangtao Qi, Jianping Gao, Wenhui Chen, Jiaming Fei, Hewei Meng, and Zhen Ma. 2025. "Research on the Control System for the Conveying and Separation Experimental Platform of Tiger Nut Harvester Based on Sensing Technology and Control Algorithms" Agriculture 15, no. 1: 115. https://doi.org/10.3390/agriculture15010115

APA Style

Chen, S., Qi, J., Gao, J., Chen, W., Fei, J., Meng, H., & Ma, Z. (2025). Research on the Control System for the Conveying and Separation Experimental Platform of Tiger Nut Harvester Based on Sensing Technology and Control Algorithms. Agriculture, 15(1), 115. https://doi.org/10.3390/agriculture15010115

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