To insure product quality, a number of springs are tested on a fatigue testing system on a daily basis. The system will vary the force in a sinusoidal manner accruing cycle counts as it proceeds.
This customer has since incorporated some automation to improve speed and flexibility along with more diagnostic information. The implementation of a "smarter", more flexible closed-loop controller returned dividends of twice the testing speed, improved testing repeatability and reliability and has also expedited the customers product development process.