Category: Analyzers Analyzer Dead Time Analyzer Cycle Time Batch Control Enhanced PID Wireless Control
Submitted by Greg McMillan on Mon, 07/06/2015 - 18:04
What if you could use at-line analyzers and even off-line analyzers for control of batch and continuous processes without the need to retune the PID despite long and variable cycle times? What if the lab analyzers could be used for closed loop control without having to be concerned about the...
Submitted by Greg McMillan on Mon, 12/15/2014 - 20:18
When is a controller in automatic not able to do anything to reduce an oscillation? When will a controller amplify an oscillation? In both of these cases, the controller is doing more harm than good by wearing out valves and upsetting other loops.
Submitted by Greg McMillan on Wed, 11/05/2014 - 14:14
Before the 1990s relatively few choices in PID structure were offered. There were also various supplier specific rules as to how to set the proportional mode and integral mode tuning settings to get proportional-only and integral-only control. A different model controller may have been needed for a different structure.
Category: External Reset Feedback Dead Time Enhanced PID Feedforward Control Valve Position Control Tips
Submitted by Greg McMillan on Fri, 04/18/2014 - 16:59
The power of the PID largely remains underutilized. Most of the options and parameters other than scale ranges and tuning settings remain at their defaults. Here we look how to tap into the incredible capability of the PID to minimize batch cycle time and start-up time and to maximize production...
Category: Deadtime Compensator Feedforward Control PID Options Override Control Valve Position Control Tips Enhanced PID External Reset Feedback Open Loop Backup
Submitted by Greg McMillan on Fri, 04/04/2014 - 12:23
Advanced regulatory control seeks to incorporate knowledge of process dynamics, disturbances, constraints, and objectives to increase process efficiency and capacity. The PID power and flexibility enables an incredible spectrum of creative opportunities to achieve these goals.