SAY YOU WANT A MACHINE CONTROL REVOLUTION?

摘要

If you attended last month's International Manufacturing Technology Show (IMTS), you might think that you've seen it all when it comes to automation equipment. But wait… there's a disruptive machine control technology you may not see until the next IMTS in 2010-active disruptive-rejection control (ADRC). The inventor sees it as a replacement for today's proportional-integral-derivative (PID) control technology. ADRC, being an active control concept, offers significant user advantages, says the inventor, Cleveland State University's Zhiqiang Gao, associate professor of electrical and computer engineering. Gao says PID's old feedback loop approach can't correct a problem experienced by a machine until product flow is disturbed. "In contrast, the ADRC approach rejects disturbances before operations are affected."