| 摘要 |
A feature of this invention is the provision of a reversible, D.C. shunt field motor having an armature and two separate field windings, each field winding being capable of producing rated field flux. The motor is capable of bidirectional rotation having one field energizable for CW rotation and the other field energizable for CCW rotation. A servo system couples the two field windings and has only one active control element in the high current armature circuit to control the magnitude of the armature current, and two low power amplifiers, each low power amplifier having an active control element and each controlling the magnitude of the field flux (and thereby the magnitude of armature current under certain circumstances) in a given respective direction. |
