Alan Shea is an SBE-certified engineer working with HCJB. He recalls us mentioning a UPS that is not frequency-sensitive, though costly. That earlier Workbench article concluded with the statement ...

Machine Design welcomes submissions on how to solve a specific engineering or technical problem. In the following article, an actuator/speed control recommendation improves reliability in a generator ...

In a speed controller, the motor’s speed (or velocity) is being controlled. There is an element that detects speed, whether it be a tachometer or some sort of encoder. This monitoring element provides ...