-
公开(公告)号：EP0247624A2
公开(公告)日：1987-12-02
申请号：EP87107826.7
申请日：1987-05-29
发明人： Guzik, Nahum , Mangeym, Gennady , Jones, James W.
IPC分类号： G05D13/62
CPC分类号： H02P6/06 , H02P23/22 , Y10S388/90 , Y10S388/902 , Y10S388/912
摘要： A motor speed control system comprises an encoder (12) which produces a series of indicator pulses related to the motor's speed. The period of the pulse is compared with that of a crystal-controlled reference period produced by a period generator (14). Comparison is made by means of a period comparator (16) consisting of logic elements, including flip-flops (F1, F2, F3) and gates (G1 and G2). Digital outputs of the period comparator control UP and DOWN charge pumps whose integrated value controls the motor through a power driver. Advantages of the system are precise digital control with crystal accuracy.
摘要翻译： 电动机速度控制系统包括编码器（12），其产生与电动机速度相关的一系列指示器脉冲。 将脉冲的周期与由周期发生器（14）产生的晶体控制的参考周期进行比较。 通过包括触发器（F1，F2，F3）和门（G1和G2）的逻辑元件的周期比较器（16）进行比较。 周期比较器的数字输出控制UP和DOWN电荷泵，其积分值通过电源驱动器控制电机。 该系统的优点是具有晶体精度的精确数字控制。
-
公开(公告)号：EP0247624A3
公开(公告)日：1989-10-04
申请号：EP87107826.7
申请日：1987-05-29
发明人： Guzik, Nahum , Mangeym, Gennady , Jones, James W.
IPC分类号： G05D13/62
CPC分类号： H02P6/06 , H02P23/22 , Y10S388/90 , Y10S388/902 , Y10S388/912
摘要： A motor speed control system comprises an encoder (12) which produces a series of indicator pulses related to the motor's speed. The period of the pulse is compared with that of a crystal-controlled reference period produced by a period generator (14). Comparison is made by means of a period comparator (16) consisting of logic elements, including flip-flops (F1, F2, F3) and gates (G1 and G2). Digital outputs of the period comparator control UP and DOWN charge pumps whose integrated value controls the motor through a power driver. Advantages of the system are precise digital control with crystal accuracy.
-
搜索结果
2 条记录 (耗时 0.01 秒)
