To improve motor performance and lower manufacturing costs, rotor-embedded flat NdFeB magnets replace surface-mounted curved magnets. The design effectively doubles the magnet's power volume providing flux for higher torque to inertia, and reduced size and weight.
Stainless-steel center shaft, non-magnetic-retainer rings and glass-fiber rods prestress the rotor assembly. The prestressed rotor cage delivers torque allowing center-shaft elimination in small-diameter motors. High mechanical stiffness allows increased current-loop gains.
The design secures magnets even at high speeds, eliminating the need for special rotor banding. Schlenker Enterprises has designed the synchronous ac servo motor in four diameters rated from 1 Nm to 147 Nm.
Schlenker Enterprises Ltd., 5143 Electric Ave., Hillside, IL 60162-1099, Fax: (708) 449-5703.
Some humanoid walking robots are also good at running, balancing, and coordinated movements in group settings. Several of our sports robots have won regional or worldwide acclaim in the RoboCup soccer World Cup, or FIRST Robotics competitions. Others include the world's first hockey-playing robot and a trash-talking Scrabble player.
A recent example of a major CAE revamp is MSC Apex, released last month by MSC Software Corp. In a discussion with Design News, MSC executives noted that its next-generation platform is designed to substantially reduce CAE modeling and process time, “in some cases from weeks down to hours.”
The Thames Deckway would run for eight miles close to the river’s edge, rising and falling slightly with the tidal cycle. It will generate its own energy from a series of devices that will line the pathway and use a combination of sources to make the path self-sustaining.
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