CONTROL LOOP PERFORMANCE MONITORING

Control loop monitoring can be used to improve the performance of proc esses in industry, The monitoring tools presented are concerned with r educing the output variance of regulation loops: As a result, three di fferent estimators are used to determine the minimum achievable output variance, the time delay and the static input-output relationship of the process, These three properties can be used together or individual ly to provide insights into the process, Once the methods are introduc ed and their algorithms outlined, the monitoring tools are tested on d ata from industrial processes, These results show the capabilities and limitations of the proposed estimation methods and the potential bene fits to be obtained from monitoring.