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Decarbonization goals across the globe are leading to an increased adoption of electric vehicles. With electric car sales soaring, even the most successful...
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Articles: Motion Control
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Briefs: Materials
Briefs: Motion Control
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Articles: Manufacturing & Prototyping
Stepper motors and stepper-based linear actuators are often selected for open-loop motion control devices and equipment. These can be found in a wide range of products and...
Briefs: Motion Control
Double-Fed Induction Linear Alternator
This technology was developed to address the limitations of traditional, single-fed linear alternators that require permanent magnets, adhesive bonding organics, and heavy iron laminations for flux control. They experience eddy-current losses and require electromagnetic interference protection. Furthermore,...
Briefs: Propulsion
Improved Directed Flux Motor
Electromagnetic motors typically convert electrical energy into rotational mechanical energy and are employed across a wide array of applications. While motors represent relatively mature technology, practitioners continue to seek ways to enhance motor operation including a decrease in cost, drop in size/weight,...
Articles: Mechanical & Fluid Systems
Smarter, better, faster, less expensive — those words are the mantra of today’s global economy. As organizations seek to streamline operations and do more with less, they...
Briefs: Materials
Making electric cars lighter also involves reducing the weight of the motor. One way to do that is by constructing it from fiber-reinforced polymer materials. A new cooling concept...
Briefs: Motion Control
Precision Low-Speed Motor Controller
Innovators at NASA Johnson Space Center have developed a method for controlling precise motion of a brushless DC (BLDC) motor using relatively inexpensive components. Precision motors are usually quite expensive and inefficient when operating at slow speeds. Current motors are only capable of operating at...
INSIDER: Software
Oak Ridge National Laboratory scientists have created open source software that scales up analysis of motor designs to run on the fastest computers available.
Articles: Mechanical & Fluid Systems
Integrating lead screws with stepper motors is a simple and cost-effective method for getting precise linear motion. But achieving that precision requires...
Articles: Mechanical & Fluid Systems
Step motors are widely used in automation due to their high resolution, precision positioning, minimal control electronics, and low cost. As an open loop system, traditional...
Briefs: Robotics, Automation & Control
An eel-like robot was developed that can swim silently in salt water without an electric motor. Instead, the robot uses artificial muscles filled with water to propel itself. The...
Briefs: Aerospace
NASA Langley Research Center has developed Greased Lightning, the first unmanned aerial vehicle (UAV) that combines vertical take-off and landing (VTOL) capability with...
Briefs: Aerospace
NASA Langley Research Center has developed a novel aircraft design that can carry 150+ passengers over a range of 3,500 nautical miles. Key features include a turboelectric propulsion system, twin...
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