CAJ | 학술논문

为了解决谷物籽粒撞击信号码间串扰问题，实现联合收获机工作过程中谷物损失量的实时监测，并提高监测的精度，设计了一种新的籽粒清选监测系统。该系统采用Kalman 滤波的方法缩短了籽粒撞击板信号的衰减时间，从而可以有效地降低信号的码间串扰。为了验证系统的有效性和可靠性，对籽粒清选系统进行了测试，选取了两组饱满程度不同的籽粒作为研究对象，通过测试得到了两组籽粒的撞击电压响应曲线，并分别对比了Kalman滤波和未滤波的信号衰减曲线和籽粒的清选误差。由对比结果可以发现：Kalman 滤波能明显地缩短信号的衰减时间，降低了籽粒间码间串扰对系统监测精度的影响及清选误差，大大提高了籽粒损失监测系统的工作效率，为联合收割机的优化设计提供了理论参考。
위료해결곡물자립당격신호마간천우문제，실현연합수획궤공작과정중곡물손실량적실시감측，병제고감측적정도，설계료일충신적자립청선감측계통。해계통채용Kalman 려파적방법축단료자립당격판신호적쇠감시간，종이가이유효지강저신호적마간천우。위료험증계통적유효성화가고성，대자립청선계통진행료측시，선취료량조포만정도불동적자립작위연구대상，통과측시득도료량조자립적당격전압향응곡선，병분별대비료Kalman려파화미려파적신호쇠감곡선화자립적청선오차。유대비결과가이발현：Kalman 려파능명현지축단신호적쇠감시간，강저료자립간마간천우대계통감측정도적영향급청선오차，대대제고료자립손실감측계통적공작효솔，위연합수할궤적우화설계제공료이론삼고。
In order to reduce the impact of interference signal code of cereal grains , achieve real-time monitoring work combine harvester process quantity , and improve the monitoring accuracy , it designs a new seed sorting and monitoring system .The system uses the method of Kalman filtering to shorten the decay time of the impact plate grain collision sig-nal , which can effectively reduce the interference problem between signal code .In order to verify the validity and relia-bility of the system , the grain cleaning system has been tested by choosing two groups of different grain plumpness degree as the research objects .Through the test has been bombarding voltage response curves of two groups of grain .Finally , respectively Kalman filter and the unfiltered signal attenuation curve and grain cleaning error , by contrast the results , it can be found that Kalman filter can shorten the signal decay time obviously , which reduces the influence among grain in-ter symbol interference on the system monitoring precision , and reduces the cleaning error .And it greatly improves the grain loss monitor of the working efficiency in the system , which provides the theory reference for optimization design of combine harvester .