公开(公告)号：US4488096A

公开(公告)日：1984-12-11

申请号：US296861

申请日：1981-08-27

申请人： Hinrich Cap ,  Johann von der Heide ,  Rolf M/u/ ller

发明人： Hinrich Cap ,  Johann von der Heide ,  Rolf M/u/ ller

IPC分类号： H02P6/06 ,  H02P7/288 ,  H02P5/16

CPC分类号： H02P7/2885 ,  H02P6/06 ,  Y10S388/91 ,  Y10S388/915 ,  Y10S388/916

摘要： A first capacitor is discharged with every pulse of a train of pulses of a frequency proportional to the actual speed of a rotary machine under control and is charged up during intervals between these pulses. The voltage of the first capacitor provides a signal to a threshold circuit which operates to provide a second signal whenever the voltage of the first capacitor exceeds a predetermined voltage which may be set in order to set the speed at which the machine is to be controlled. During the presence of the second signal a second capacitor is charged, beginning at a predetermined voltage, preferably zero. The regulating magnitude for the machine to be controlled is derived from the voltage of the second capacitor either directly or indirectly through a controller circuit and a power stage. The circuit is particularly useful for control of the speed of machines that run slowly or can conveniently provide only relatively few speed-indicating pulses per revolution.

摘要翻译： 第一电容器以与控制的旋转机器的实际速度成比例的频率脉冲串的每个脉冲放电，并且在这些脉冲之间的间隔期间被充电。 第一电容器的电压向阈值电路提供信号，该阈值电路每当第一电容器的电压超过预定的电压而工作时提供第二信号，该电压可以被设置以便设定机器的控制速度。 在存在第二信号期间，第二电容器被充电，从预定电压开始，优选为零。 要控制的机器的调节幅度通过控制器电路和功率级直接或间接地从第二电容器的电压得到。 该电路对于控制缓慢运行的机器的速度或每转可以方便地提供相对较少的速度指示脉冲特别有用。