Electric Boat Corporation

Michael J Lubas

Alberto Franco

Marvin E Rosen

Vladimir Odessky

Spyro Pappas

Michael Gheorghiu

David Atwell

In the particular embodiments of the invention described in the specification, a first signal generator produces a signal which changes in cycles having approximately straight line segments between maximum and minimum values at a first rate and a second signal generator produces a signal which changes in cycles having approximately straight line segments at a second rate which is an order of magnitude greater than the first rate. The maximum level of the second signal during any cycle is dependent upon the instantaneous signal level of the first signal and the minimum level of the second signal during any cycle is dependent upon a selected fraction of the instantaneous signal level of the first signal. The second signal is used to control the speed of a motor in a continuously changing random manner.

Continuously changing random signal generating arrangement and method

In the embodiments described in the specification, a permanent magnet machine has a stator assembly containing a circular array of stator windings and a rotor assembly containing passages for permanent magnets and supported for rotation within the stator windings. The rotor assembly contains dummy magnet blocks in each passage during assembly of the rotor assembly in the stator assembly and a loading fixture containing energized permanent magnets is aligned with each passage in succession into which it supplies a row of permanent magnets while the dummy magnet blocks are removed by a retrieving fixture at the opposite end of the passage. After the permanent magnets have been inserted an end cover is mounted at each end of the passage to hold the energized permanent magnets in position.

Installation and removal of energized permanent magnets in permanent magnet rotors

A permanent magnet motor rotor arrangement including a rotor core having radial and angular positioning surfaces provides for inexpensive and precise positional control of rotor components.

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Basking Ridge, NJ, United States of America

Michael J Lubas