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The Engineer - Repoint project develops fault tolerant railway switch

Researchers at Birmingham University are developing Repoint, a new railway switch technology to improve on a design that has been in use for over 200 years.

United-kingdom , Roger-dixon , Physics-research-council , Birmingham-centre-for-railway-research , Technology-readiness-level , Railway-engineering-science , Control-systems-engineering , Birmingham-centre , Railway-research , United-kingdom-rail-safety , Standards-board , Birmingham-university

"Development of a Magnetorheological Elastomer Actuator for a Mixed Rea" by Matthew Daniel Christie, Taine Fredericksen et al.

The implementation of wearable haptic devices has enabled fully immersive environments to be implemented in virtual and augmented reality applications. Advances in these technologies utilize various methods and stimuli to develop realistic sensations of touch, with a key focus area on the hands and fingertips. In haptic devices, magnetorheological elastomers (MREs) are yet to be fully explored, providing an opportunity for an application of an MRE haptic actuator to a wearable haptic glove. Through application of established MRE modelling techniques such as magnetic field simulations, a novel design of an MRE haptic actuator is developed. The device is then experimentally characterized, showing a maximum output force of 161 mN, increasing linearly with current supplied to the included electromagnet. Some paths towards optimization are then explored for improving output force and miniaturization before investigation of an experimental approach to integrate with mixed reality technologies.

Actuators , Ctuators-in-mechatronic-systems , Irtual-reality-and-human-interface ,

ABQ Techzonics Tech Superstore - Electronic,Scientific,Industrial

ABQ Techzonics,Albuquerque,NM,electronic components,electronic parts,equipment,tools,hardware,devices,special materials,books,manuals,software,electronics,scientific,industrial

United-states , New-mexico-state-university , New-mexico , Albuquerque , John-williams , El-paso , Bookmark-now-tell-your-friends-associates , National-institutes-of-health , Products-services , Lone-star-consulting-inc , Industrial-scientific-laboratory , Electronics-weapons-design

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founded out of mit and has developed a technology that can actively adapt the pressure and suspension of a vehicle to give the impression of smoothing out any bumps on the tarmac. using independently driven dampers and actuators in all four wheels, along with some processing power under the hood, the system can dynamically adjust and adapt in real time. so, what we do, when you drive down the road with the wheel, the wheel will sense an acceleration, depending what kind of obstacle you hit. so, this acceleration is measured by our device. it's built into the device accelerometer. based on that, we calculate how fast the wheel wants to go up and then we say, ok, how do we calculate the counter—force accordingly? but if we do that only on one wheel, you might get a rock on one side, but not getting this smooth ride we all expect. so, the... these signals get sent to a central body controller,

Technology , Pressure , Vehicle , Bumps , Suspension , Tarmac , Smoothing , Impression , Mit , System , Wheel , Road

Click

clearmotion is a company founded out of mit and has developed a technology that can actively adapt the pressure and suspension of a vehicle to give the impression of smoothing out any bumps on the tarmac. using independently driven dampers and actuators in all four wheels, along with some processing power under the hood, the system can dynamically adjust and adapt in real time. so, what we do, when you drive down the road with the wheel, the wheel will sense an acceleration, depending what kind of obstacle you hit. so, this acceleration is measured by our device. it's built into the device accelerometer. based on that, we calculate how fast the wheel wants to go up and then we say, ok, how do we calculate the counter—force accordingly? but if we do that only on one wheel, you might get a rock on one side, but not getting this smooth ride

Technology , Pressure , Clearmotion , Vehicle , Suspension , Company , Impression , Mit , System , Bumps , Wheels , Dampers

Click

of a vehicle to give the impression of smoothing out any bumps on the tarmac. using independently driven dampers and actuators in all four wheels, along with some processing power under the hood, the system can dynamically adjust and adapt in real time. so, what we do, when you drive down the road with the wheel, the wheel will sense an acceleration, depending what kind of obstacle you hit. so, this acceleration is measured by our device. it's built into the device accelerometer. based on that, we calculate how fast the wheel wants to go up and then we say, ok, how do we calculate the counter—force accordingly? but if we do that only on one wheel, you might get a rock on one side, but not getting this smooth ride we all expect. so, the... these signals get sent to a central body controller, in vehicle, where our software resides. it calculates the synchronisation between all four wheels and based

System , Bumps , Vehicle , Wheels , Dampers , Smoothing , Tarmac , Processing-power , Actuators , Hood , Impression , Four

"Actuator Materials for Environmentally Powered Engines" by Geoffrey M. Spinks, Burhan B.A. Abbasi et al.

The first solid-state engine that converted heat into continuous mechanical motion using a thermally responsive actuating material was introduced almost a century ago. These engines used vulcanized rubber where the cyclically heating and cooling of the rubber generate continuous mechanical power in pendulum or wheel type engines. The development of solid-state heat engines has seen several waves of activity with interest stimulated by the introduction of new actuating materials capable of responding to different environmental stimuli. Opportunities for improved engine outputs are afforded by recently developed artificial muscle materials. A theoretical connection between engine output and the characteristics of the actuator material is developed to compare the performances of vulcanized rubber, shape memory alloys (SMAs), and twisted and coiled polymer (TCP) fiber artificial muscles. It is shown that with an engine designed to suit the actuation performance of TCPs engines powered by the tensile actuation of such materials would exceed the output of SMA heat engines. The properties needed in actuator materials to further enhance engine output are identified and polymer structures that may produce such properties are described.

Actuators , Rtificial-muscles , Ngine , Hape-memory-alloys , Wisted-and-coiled-polymers ,

Actuators and Valves Market Expected to Reach $204.63 Billion, Globally, By 2031 at 7.13% CAGR: Allied Market Research

Surge in demand for Actuators and Valves, industrial automation, water treatment and healthcare sector drives the growth of the global actuators and valves market PORTLAND, Ore., Feb. 28

Malaysia , Australia , Japan , Philippines , Portland , Oregon , United-states , Hong-kong , United-kingdom , Pune , Maharashtra , India

"Design and Control of a Novel Variable Stiffness Series Elastic Actuat" by Emre Sariyildiz, Rahim Mutlu et al.

This article expounds the design and control of a new variable stiffness series elastic actuator (VSSEA). It is established by employing a modular mechanical design approach that allows us to effectively optimize the stiffness modulation characteristics and power density of the actuator. The proposed VSSEA possesses the following features: no limitation in the work range of output link; a wide range of stiffness modulation (∼20 N·m/rad to ∼1 KN·m/rad); low-energy-cost stiffness modulation at equilibrium and nonequilibrium positions; compact design and high torque density (∼36 N·m/kg); and high-speed stiffness modulation (∼3000 N·m/rad/s). Such features can help boost the safety and performance of many advanced robotic systems, e.g., a cobot that physically interacts with unstructured environments and an exoskeleton that provides physical assistance to human users. These features can also enable us to utilize variable stiffness property to attain various regulation and trajectory tracking control tasks only by employing conventional controllers, eliminating the need for synthesizing complex motion control systems in compliant actuation. To this end, it is experimentally demonstrated that the proposed VSSEA is capable of precisely tracking the desired position and force control references through the use of the conventional proportional–integral–derivative controllers.

Actuators , Ompliant-robotics , Echatronics , Odulation , Hysical-robot-environment-interaction , Obots , Afe-robotics , Eries-elastic-actuators-seas- , Olid-modeling , Prings , Orque

Smart gifts will soon unwrap themselves

With the help of the high-brilliance X-ray source PETRA III, a German-Swedish research group has developed a new cellulose polymer material that can be specifically animated to move by moisture, m ...

Germany , Sweden , Stockholm , German , Swedish , Qing-chen , Stephan-roth , Helmholtz-centre-for-heavy-ion-research , Royal-institute-of-technology-stockholm , Royal-institute , Technology-stockholm , Helmholtz-centre