Another consideration worth mentioning is the use of ramp tables to drive stepper motors. In certain applications, depending upon motor type, performance requirements, loading and operating speed, ramp tables are used to gradually 'ramp' up from a slower speed to the faster speed. This helps prevent the motor from stalling as it goes up to the faster speeds (which typically have different torque values than the slower speeds).
Altair has released an update of its HyperWorks computer-aided engineering simulation suite that includes new features focusing on four key areas of product design: performance optimization, lightweight design, lead-time reduction, and new technologies.
At IMTS last week, Stratasys introduced two new multi-materials PolyJet 3D printers, plus a new UV-resistant material for its FDM production 3D printers. They can be used in making jigs and fixtures, as well as prototypes and small runs of production parts.
In a line of ultra-futuristic projects, DARPA is developing a brain microchip that will help heal the bodies and minds of soldiers. A final product is far off, but preliminary chips are already being tested.
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