公开(公告)号：US3728596A

公开(公告)日：1973-04-17

申请号：US3728596D

申请日：1971-03-08

Applicant: ASEA AB

Inventor： HERMANSSON B ,  GUSTAFSSON J

IPC: B60L3/10 ,  H02P5/50

CPC classification number: B60L3/10 ,  B60L2200/26 ,  Y02T10/646 ,  Y02T10/648

Abstract: A slip controlled driving means for traction purposes includes a plurality of direct current motors connected to various wheel shafts. They are provided with control rectifiers forming valve control systems to control the motor current. The rectifiers respond to a first reference value supplied to the system by a first reference value transducer, a current transducer for the rotor current and a tachometer for each motor. A minimum selector is provided to compare the output values of all the tachometers and to pick out the lowest one. A reference value transducer can be set for the permissible difference between a certain motor speed and the speed of the motor rotating at the lowest speed. A summation device produces the sum of the lowest tachometer value and this difference reference, and a plurality of comparison devices are each connected to a tachometer and arranged to produce the positive difference between the output value of one tachometer and such sum. This positive difference is supplied to each of the control systems in such a way as to reduce the driving current of the motor.

Abstract translation: 用于牵引目的的滑动控制驱动装置包括连接到各种轮轴的多个直流马达。 它们配有控制整流器，形成阀控制系统以控制电机电流。 整流器响应由第一参考值传感器，用于转子电流的电流传感器和每个电动机的转速计提供给系统的第一参考值。 提供一个最小选择器来比较所有转速表的输出值，并选出最低的转速。 可以设置参考值换能器，以确定某个电机速度与以最低速度旋转的电机转速之间的允许差值。 求和装置产生最低转速计值和该差分参考值的和，并且多个比较装置各自连接到转速计，并且被布置成产生一个转速计的输出值与这样的和之间的正差。 以这样一种减小电动机的驱动电流的方式将这个正差异提供给每个控制系统。