Size really does matter when it comes to direct-drive linear actuators. The smaller the actuator, the more that can be crammed side-by-side into the tight spots normally occupied by pneumatic cylinders or ball screws. But size isn't everything. Force and acceleration capabilities matter too. So does ease-of-installation. Copley Controls has just developed a compact actuator that balances all of these needs. Sized to mount on 28-mm centers, the new ServoTube Model STA11 is the company's most compact direct-drive linear actuator to date. Yet it's no weakling. The STA11, which has an 11-mm thrust rod, offers a peak force of 92N and continuous force of 23.5N. It has maximum velocity of 5.6 m/sec, accelerates instrumentation-type loads to 25g, and provides a 14- to 232-mm stroke. Read more about the new actuator here, including comments from one of the first engineers to use it.
Festo's BionicKangaroo combines pneumatic and electrical drive technology, plus very precise controls and condition monitoring. Like a real kangaroo, the BionicKangaroo robot harvests the kinetic energy of each takeoff and immediately uses it to power the next jump.
Design News and Digi-Key presents: Creating & Testing Your First RTOS Application Using MQX, a crash course that will look at defining a project, selecting a target processor, blocking code, defining tasks, completing code, and debugging.
These are the toys that inspired budding engineers to try out sublime designs, create miniature structures, and experiment with bizarre contraptions using sets that could be torn down and reconstructed over and over.
PowerStream is deploying the microgrid at its headquarters to demonstrate how people can generate and distribute their own energy and make their homes and businesses more sustainable through renewables.
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