公开(公告)号：US20120234934A1

公开(公告)日：2012-09-20

申请号：US13421203

申请日：2012-03-15

申请人： MICHAEL D. SCORE ,  DAVID A. SCORE

发明人： MICHAEL D. SCORE ,  DAVID A. SCORE

IPC分类号： E01C19/20

CPC分类号： A01C17/005 ,  E01C19/203 ,  E01C23/07 ,  E01C2019/2075

摘要： A special drive system that provides automatic and uniform application control of granular materials. It provides an automatic application control of a granular material from a granular material spreader and is comprised of (a) at least one electric motor for driving the conveyor and spinner at a speed, the said speed which determines a rate of discharge of the granular material; (b) a power source for the motor; (c) a means for controlling the power from the power source to the at least one motor; (d) a means for inputting a signal to the means for controlling the power; (e) a wiring harness with control and power electrical connectors; and (f) a means to mechanically mount the special drive system to the grain spreader wherein the result of the system is an accurately controlled rate of discharge and hence dispensing of the granular materials.

摘要翻译： 一种特殊的驱动系统，可以自动统一应用粒状材料的应用。 它提供了一种粒状材料撒布机对颗粒状材料的自动应用控制，并且包括（a）至少一个用于以一定速度驱动输送机和旋转器的电动机，所述速度决定了颗粒材料的排出速率 ; （b）电动机的电源; （c）用于控制从电源到至少一个电动机的电力的装置; （d）用于将信号输入到用于控制电力的装置的装置; （e）带控制和电源电气连接器的线束; 和（f）将专用驱动系统机械地安装到撒布机上的装置，其中系统的结果是精确控制的排出速率并因此分配颗粒材料。

公开(公告)号：US06614297B2

公开(公告)日：2003-09-02

申请号：US09900396

申请日：2001-07-06

申请人： Michael D. Score ,  Paras M. Dagli ,  Roy C. Jones, III ,  Wayne T. Chen

发明人： Michael D. Score ,  Paras M. Dagli ,  Roy C. Jones, III ,  Wayne T. Chen

IPC分类号： H03F338

CPC分类号： H03F3/2173 ,  H03F3/217 ,  H03F2200/384

摘要： A ternary modulation scheme for filterless switching amplifiers with reduced EMI reduces the common mode component of the signal by allowing only one state with zero differential voltage across the load to exist. The ternary modulation scheme is more efficient than the quaternary modulation scheme when applied to class-D filterless switching amplifiers since the gates of the power MOSFETs are being charged and discharged at only a small duty cycle instead of 50% duty cycle.