ABSTRACT
ABB (https://www.abb.com/) Emerson (https://www2.emersonprocess.com/) GE (https://www.ge.com/) Honeywell (https://www51.honeywell.com/) Invensys (https://www.icca.invensys.com/) Rockwell Automation (https://www.rockwellautomation.com/) Siemens (https://www.siemens.com/) Yokogawa (https://www.yokogawa.com/)
Batch-Control and Management Software
Aspen Technology (https://www.aspentech.com/) OSIsoft (https://www.osisoft.com/) Proleit (https://www.proleit.com/) SAP (https://www.sap.com) Werum Software & Systems (https://www.werum.com/)
In continuous processes, such as the distillation of crude oil or the manufacture of bulk chemicals and fertilizers, the product is manufactured continuously. In batch processes, used in food, pharmaceutical, and ne chemical industries, products are manufactured in groups called batches. Batch processes are sequential, where the control functions (called phases), such as charging, mixing, heating, cooling, and testing, are performed in an ordered fashion. Each phase may require many process steps, such as the opening and closing of valves, starting and stopping of pumps, and setting and resetting of control loops. In addition to the normal stepby-step control actions, batch-process control requires many other functions, for example, responding to abnormal or failure conditions, keeping batch records, maintaining recipes, and scheduling batches.
