Patent ID: 8909360
Filing Date: 2014-12-09
Classification: G05B

Abstract:
1. A method of diagnosing a process control loop comprising a plurality of process control loop devices, wherein the process control loop is controlled based on adaptive process loop parameters calculated from an adapted model of the process control loop for a plurality of parameters of the process control loop, the method comprising: evaluating on a computer a performance of the process control loop; evaluating on the computer a condition of a process control loop device within the process control loop; evaluating on the computer a quality of the adapted model of the process control loop; evaluating on the computer a stability of the process control loop; generating on the computer a diagnostic index from each of the evaluations evaluating on the computer a condition of the process control loop from one or more of the diagnostic indices; and automatically adjusting on the computer a process variable filter based on evaluating on the computer a condition of the process control loop from one or more of the diagnostic indices.