Integration of multivariate statistical process control ...
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Integration of multivariate statistical process control ...
Abstract Statistical process control is being used along with classical feedback control systems (which are also termed as Engineering Process Control, EPC) for ...
Int J Adv Manuf Technol DOI 10.1007/s00170-014-6641-6
ORIGINAL ARTICLE
Integration of multivariate statistical process control and engineering process control: a novel framework Yasir A. Siddiqui & Abdul-Wahid A. Saif & Lahouari Cheded & Moustafa Elshafei & Abdur Rahim
Received: 17 March 2014 / Accepted: 23 November 2014 # Springer-Verlag London 2014
Abstract Statistical process control is being used along with classical feedback control systems (which are also termed as Engineering Process Control, EPC) for the purposes of detecting faults and avoiding over adjustment of the processes. This paper evaluates the effectiveness of integrating SPC with EPC for both fault detection and control. A novel framework for fault detection using Multivariate Statistical Process Control (MSPC) is proposed here and illustrated with a case study. The simultaneous application of MSPC control charts to process inputs and outputs or in other words “joint monitoring” of process inputs and outputs is shown here to provide efficient fault detection capabilities. An example of Heating Ventilation and Air Conditioning (HVAC) systems is simulated here and used as a case study to demonstrate the detection capabilities of the proposed framework. Moreover, the capabilities of the proposed framework were enhanced by inclusion of a corrective action scheme, thus leading to a complete control system with fault detection and correction.
