Tuning the Forgotten Loop: We can tune PID controllers, but what about tuning the operator?

摘要

The purpose of tuning loops is to reduce errors and thus provide more efficient operation that returns quickly to steady-state efficiency after upsets, errors, or changes in load. State-of-the-art manufacturers in process and discrete industries have invested in advanced control software, manufacturing execution software, and modeling software to "tune" everything from control loops to supply chains, thus driving higher quality and productivity. The "forgotten loop" has been the operator, who is typically trained to "average" parameters to run adequately under most steady-state conditions. "Advanced tuning" of the operator could yield even better outputs, with higher quality, fewer errors, and a wider response to fluctuating operating conditions. This article explores the issue of improving operator actions, and a method for doing so.