首页|Development and performance evaluation of a guide vane inclination automatic control system for corn threshing unit based on feedrate monitoring
Development and performance evaluation of a guide vane inclination automatic control system for corn threshing unit based on feedrate monitoring
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
? 2022 Elsevier B.V.The crop threshing process and the material movement speed are difficult to control with the fluctuation of feedrate in the longitudinal axial flow threshing unit, which results in the decline of threshing performance. We developed a corn threshing unit with an electric-hydraulic top cover guide vane inclination automatic control system based on the feedrate to overcome these problems. The optimal control model of feedrate and guide vane inclination was established for the control system: When the feedrates were 6, 8, and 10 kg/s, the optimal guide vane inclinations were 22°, 24°and 26°, respectively. Taking the constant guide vane inclination (20°) as the control group, the operational performance of the automatic control system of guide vane inclination was evaluated. The test bench results showed that the steady-state response time was 0.15 s, and the error was maintained within 0.27°, the control algorithm can meet the design requirement. Moreover, results demonstrated that the threshing unit with control system outperformed the one with the constant guide vane inclination, with the average torque range of the threshing rotor axis, average peak torque, the broken grain rate (BGR)、the unthreshed grain rate (UGR) and the grain-entrainment loss rate (EGR) decreasing by 17.39%, 19.03%, 1.63%, 0.06%, and 0.19%, respectively. Thus it can be seen that corresponding to different feedrates conditions, a proper guide vane inclination from the threshing unit with the developed automatic control system could obtain better working quality than the results with constant guide vane inclination.
NSTL
Elsevier
