Posts Tagged ‘Feed Forward’
Who Should Use Feed Forward Control? What applications are best for Feed Forward?
It’s not uncommon for process control discussions to focus on use of the PID to improve a loop’s ability to track Set Point. Oftentimes tweaks to controller tuning parameters either seek incremental reduction in Settling Time or strive to limit Overshoot. Indeed, many PID tuning courses position optimization of a control loop’s Set Point Tracking as the ultimate goal. Such a bias overlooks the value of other strategies like Feed Forward Control.
Read MoreThe Benefits of Feed Forward Control
By nature most people are reactive when it comes to dealing with life’s big expenditures. Think of happy occasions such as graduations and weddings. Then consider more somber milestones like retirement. By most accounts the average worker is wholly unprepared to absorb the costs linked to these and other of life’s events. Even though the timing and amount of those costs can be forecasted, the typical approach to saving for the future isn’t up to the task. Face it: As a species we’re wired to be reactive!
Read MoreWhat is Feed Forward Control?
To no practitioner’s surprise, process control exists as a discipline because manufacturing is complex. It’s erratic and occasionally unpredictable. At many facilities it is highly hazardous. Variability – whether localized to a single process or reverberated throughout a plant – can transform production from a well-managed operation to a highly turbulent task. Variability is a key reason why manufacturing is difficult. So it’s no wonder that process engineers focus their efforts on controlling disturbances – those unplanned upsets which drive variability from one process to the next.
Read MoreReducing Energy Cost Through Improved Disturbance Rejection
Two of the most popular architectures for improving regulatory performance and increasing profitability are 1) cascade control and 2) feed forward with feedback trim.
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