Automated fastening machines require precise velocity and torque control. Winding machines need high-speed wire take up, and precise tension control. That's where Copley Control's Model 5424AC could simplify controls on fastening or winding machines--as well as pick-and-place, robots, automated assembly equipment, and material testing machines.
It features remote speed/torque mode switching, and drives brushless dc servomotors (to 2.5 hp continuous) with power direct from AC mains.
The servoamplifier's current monitor provides feedback to the controller. As fasteners take up toward the end of travel, sensors detect increasing winding current and signal the controller which then cues the amplifier to switch from velocity to torque mode. In the torque mode maximum current settings prevent the motor from applying excessive torque to delicate loads, and from overheating.
Three velocity loops add to the servoamplifier's flexibility. A frequency-to-voltage (F/V) converter emulates traditional motor-driven tachogenerators. Result: speed feedback without a separate motor-driven tachometer. Another velocity mode uses the F/V converter to transform digital shaft encoder signals to analog velocity feedback. The third mode uses IR compensation to control the motor back emf and maintain constant velocity as the load changes. Adjustable soft start capability smooths mechanical operations.
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.