Achieving higher torque is a never-ending goal for motor engineers. Pacific Scientific, for example, introduced a high torque step motor earlier this year. And Oriental Motor just announced a new hybrid step motor that has higher torque for a given package. So industry consultant Dan Jones, VP at Motion Media Group (Thousand Oaks, CA) may not have exactly been going out on a limb when he told us that motor torque density will nearly double over the next ten years. He attributes the improvement to new developments in magnets and optimization of motor designs. Magnets improve about 5% each year due to better materials, he says, noting the University of Delaware's research on nano-composites (combinations of soft iron, rare earth elements, and composites). Engineers also are employing finite element analysis to improve pole shaping and exploit more of the effective force of the magnet, and increasing the amount of copper in the windings. Five years ago, the typical motor had less than 60% slot fill—today that number is in excess of 70% and going up. Earlier this year, for example, Anorad introduced a line of LC linear motors. One of the main selling points: Higher copper fill in the windings. Engineers are also looking to reduce the size of the non-working parts of the motor, which depending on the profile of the motor can take up 50% of the package's real estate.
Some cars are more reliable than others, but even the vehicles at the bottom of this year’s Consumer Reports reliability survey are vastly better than those of 20 years ago in the key areas of powertrain and hardware, experts said this week.
Many of the materials in this slideshow are resins or elastomers, plus reinforced materials, styrenics, and PLA masterbatches. Applications range from automotive and aerospace to industrial, consumer electronics and wearables, consumer goods, medical and healthcare, as well as sporting goods, and materials for protecting food and beverages.
While many larger companies are still reluctant to rely on wireless networks to transmit important information in industrial settings, there is an increasing acceptance rate of the newer, more robust wireless options that are now available.
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