At the top of each hour, a proprietary controller sends a signal via RS-485 link to twin controllers, causing them to execute a motion profile program that drives each of two sculptures. A NEMA 34 stepper motor running in the open-loop mode in conjunction with a 15:1 right angle gearhead provides enough torque to drive the system. An open gear reduction of 5:1 between the gear-head output pinion and the slewing ring gear on the stage platen maintains a favorable inertia ratio between the rotating sculpture and the motor. This configuration allows the system to accelerate the sculptures at approximately 1 rev/sec2 to speeds in excess of 20 rpm when executing their motion profile. The completed rotary stage is repeatable to ±2 degrees, with most of the position error due to backlash in the open gearing comprising the final stage of the drive train. The easy programmability of the ZETA system allowed for a dynamic and realistic motion profile.
Robots that walk have come a long way from simple barebones walking machines or pairs of legs without an upper body and head. Much of the research these days focuses on making more humanoid robots. But they are not all created equal.
The IEEE Computer Society has named the top 10 trends for 2014. You can expect the convergence of cloud computing and mobile devices, advances in health care data and devices, as well as privacy issues in social media to make the headlines. And 3D printing came out of nowhere to make a big splash.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.