Control system for reversing the rotation of a field wound...

H - Electricity – 02 – P

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H02P 7/00 (2006.01) B60L 3/00 (2006.01)

Patent

CA 1263884

A CONTROL SYSTEM FOR REVERSING THE ROTATION OF A FIELD WOUND MOTOR ABSTRACT A control system for reversing the rotation of a field wound motor is used in electric power steering systems. The system responds to control signals from a control means 25 to energize opposite legs of a bridge circuit 14 to direct current through the field winding in the correct direction. At the same time the armature winding is energized. The control system provides a failure detection means 18 for the checking of the various control signals and the operation of the system to determine if there is any system failure to provide for a failsafe operation. (FIGURE 1)

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