The ABCs of PID control. Considerations for interfacing elements in the electrical circuit to accomplish those parts of the PID function for position control. Firmware code implementation.

This article was updated on June 18, 2025. It was orginally published Nov. 15, 2002. Proper installation and maintenance are essential to bearing performance and premature failure prevention due to ...

Design refinements boost performance of self-aligning ball bushing while maintaining their error-correcting nature.

Grade school math students are likely familiar with teachers admonishing them not to just guess the answer to a problem. But a new proof establishes that, in fact, the right kind of guessing is ...