An On-Line Control Technique for a Hierarchically           Structured Manufacturing Control System
{'Code': '07030000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'CMMI', 'LongName': 'Div Of Civil, Mechanical, & Manufact Inn'}}
{'SignBlockName': 'K. (Cheena) Srinivasan'}
The objective of this research is the development of a                          methodology for the repeated production of parts over the                       planning horizon of a shop.  The primary focus is the regulation                of parts flow among available resources utilizing real-time shop                and cell controllers which enable automation of the process.  The               shop controller dispatches batches of work parts and schedules                  them among cells.  The cell controller schedules a batch of parts               among workstations.  The fundamental analytical and design                      concepts underlying this approach are:  resource grouping, real-                time scheduling, hierarchical control, stability, and state-space               representation of the system.  The methodology includes a                       hierarchical decision/control structure consisting of shop and                  cell levels, dynamic grouping of a pool of resources (machines,                 robots, transporters) into virtual cells by the shop controller,                the use of minimax algebra to permit state-space representation                 of repeated discrete events, and implementation based on linear                 control theory.
[{'FirstName': 'Nicholas', 'LastName': 'Odrey', 'EmailAddress': 'ngo0@lehigh.edu', 'StartDate': '08/15/1986', 'EndDate': None, 'RoleCode': 'Principal Investigator'}, {'FirstName': 'George', 'LastName': 'Wilson', 'EmailAddress': 'GRW3@LEHIGH.EDU', 'StartDate': '08/15/1986', 'EndDate': None, 'RoleCode': 'Co-Principal Investigator'}]
{'Name': 'Lehigh University', 'CityName': 'Bethlehem', 'ZipCode': '180153005', 'PhoneNumber': '6107583021', 'StreetAddress': 'Alumni Building 27', 'CountryName': 'United States', 'StateName': 'Pennsylvania', 'StateCode': 'PA'}
{'Code': '1468', 'Text': 'Manufacturing Machines & Equip'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1986&All=true', 'xml': '8605972.xml'}