The ability to compensate for seeding rates of planter units has the potential to mitigate the problem of inaccurate seed application rates due to lateral speed differences of planter units when planters are turning. This would result in an increase in crop yields and a reduction of the seed usage. In this article, a GPS-based turn compensation algorithm was designed to offset the seeding rates of planter units, and a simulation model in which the turning radius varied was built using MATLAB Simulink to evaluate the factors (the positioning accuracy, frequency of the GPS receiver, and travel speed) affecting the performance of the developed turn compensation system. Field experiments indicated that a four-row planter equipped with the developed turn compensation control system had better seeding accuracy (above 97%) and seeding coefficient of variation (below 1.52%) values than those of a non-compensation planter under equivalent working conditions, and a uniform seed spacing between planting rows could be obtained regardless of the change in the turning radius, indicating that the developed system could offset the seeding rates of every row automatically by turn compensation. The GPS used in this paper can be shared with a tractor automatic navigation system or any farm machinery equipped with a GPS device, which facilitates the manufacturing cost reduction and as well as the integration of this system and other agricultural machinery control modules.

补偿播种机单元的播种率的能力有可能减轻由于播种机转动时播种机单元的横向速度差异导致的种子施用率不准确的问题。这将导致作物产量增加和种子使用量减少。本文设计了一种基于 GPS 的转向补偿算法来抵消播种机的播种量，并利用 MATLAB Simulink 建立了一个改变转向半径的仿真模型，对影响因素（定位精度、GPS 频率）进行了评估。接收器和行驶速度）影响开发的转弯补偿系统的性能。田间试验表明，在同等工况下，采用研制的轮转补偿控制系统的四行播种机比无补偿播种机具有更好的播种精度（97%以上）和播种变异系数（1.52%以下）值，并且无论转弯半径如何变化，都可以获得均匀的种植行间距，表明所开发的系统可以通过转弯补偿自动抵消每行的播种量。本文使用的GPS可以与拖拉机自动导航系统或任何装有GPS设备的农机共享，有利于降低制造成本，以及该系统与其他农机控制模块的集成。52%) 值比同等工作条件下的非补偿播种机的值高，并且无论转弯半径如何变化都可以获得均匀的种植行间距，表明开发的系统可以抵消每行的播种率自动轮流补偿。本文使用的GPS可以与拖拉机自动导航系统或任何装有GPS设备的农机共享，有利于降低制造成本，以及该系统与其他农机控制模块的集成。52%) 值比同等工作条件下的非补偿播种机的值高，并且无论转弯半径如何变化都可以获得均匀的种植行间距，表明开发的系统可以抵消每行的播种率自动轮流补偿。本文使用的GPS可以与拖拉机自动导航系统或任何装有GPS设备的农机共享，有利于降低制造成本，以及该系统与其他农机控制模块的集成。表明开发的系统可以通过轮流补偿自动抵消每行的播种率。本文使用的GPS可以与拖拉机自动导航系统或任何装有GPS设备的农机共享，有利于降低制造成本，以及该系统与其他农机控制模块的集成。表明开发的系统可以通过轮流补偿自动抵消每行的播种率。本文使用的GPS可以与拖拉机自动导航系统或任何装有GPS设备的农机共享，有利于降低制造成本，以及该系统与其他农机控制模块的集成。