THE USE OF MAGNETIC AMPLIFIERS TO DRIVE TWO-PHASE SERVO MOTORS
POLYTECHNIC INST OF BROOKLYN NY MICROWAVE RESEARCH INST
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Consideration is given to the use of magnetic amplifiers as sources of power for miniature 2-phase induction motors in instrument or computer servo systems. The effects of the interaction between the motor and amplifier are discussed. Various types of magnetic amplifier circuits were investigated with regard to bias adjustment and external characteristics. Whenever possible, an attempt was made to justify a functional transfer-type description of the amplifier behavior. Similarly, the motor was viewed externally as 2 terminals and a shaft protruding from a black box. A method of calculating the complete family of speed-torque characteristics is presented which requires only 2 measurements to obtain the necessary data. In addition, a new equivalent circuit for the motor is proposed which considers the motor as an equivalent speed or torque generator and enables easy computation of system performance. Data are presented which are based on 2 different sets of 4, matched, tape-wound, Hipernik V cores and a Diehl FPE 25-11 servomotor.
- Electricity and Magnetism