New general-purpose AC drives have been added to the IronHorse brand. These new VFDs support three control modes, including V/Hz, slip compensation, and sensorless vector, and come in various voltage and horsepower ratings at a very affordable price. 

Kollmorgen has released its new PCMM2G programmable motion controller.

Closed Loop control systems can handle a wide range of motions with a wide range of loads if the control system and mechanics are properly designed for the task. A couple of the more difficult combinations to design for are high inertial mismatches and backlash with hard gearing. The question is not just how to make the system stable, but rather how to also get the desired performance.