Design and Experiment of Side-Shift Stubble Avoidance System for No-Till Wheat Seeder Based on Deviation-Perception Fusion Technology

Abstract

To improve the stubble avoidance rate of no-till wheat seeders under the environment of corn stubble, the side-shift stubble avoidance system was developed in the present study based on deviation-perception fusion technology. Firstly, the amount of implement deviation compensation was accurately obtained by the information sensing system. Then, a fuzzy PID algorithm was proposed to optimize the performance of the control system. Finally, the simulation model of the control system was developed by Matlab/Simulink. The simulation results showed that the regulation time required for the system response curve to reach the steady state was 1.0 s, and the maximum overshoot was 8.2%. To verify the performance of the side-shift stubble avoidance system, an orthogonal test was conducted. The optimal combination of parameters was obtained, including the operation speed of 1.3 m/s, the hydraulic cylinder speed of 25 mm/s, and the straw mulch amount of 1.2 kg/m2. The field verification test was performed under the optimal parameters, showing the stubble avoidance rate was 90.6%, and the mean value of the sowing variation coefficient was 27.12%, which fully satisfied the requirements of stubble avoidance and sowing operation.

Design and Test of Seed–Fertilizer Replenishment Device for Wheat Seeder

“…Researchers combine theoretical analysis and experimental data to carry out structural improvement and optimization designs of different structural types of seed metering devices such as mechanical, pneumatic, and centrifugal types, and they obtain the optimal operating parameters through simulation methods such as finite element and discrete element analysis to achieve high-speed seeding with a low breakage rate. By introducing intelligent control algorithms such as information-sensing fusion technology and adaptive fuzzy PID, the accuracy of the seeding volume has been significantly improved compared with traditional control methods, and the efficiency of precision seeding has been greatly improved [9][10][11][12][13][14][15][16][17]. However, the current seed box capacity of wheat seeders is limited and cannot meet the needs of continuous operation in large areas.…”