While you might find some *individual courses* related to production systems offered online as part of a broader online master's or even PhD program in a related field (like industrial engineering, manufacturing engineering, or operations research), a complete PhD program focused solely on production systems delivered entirely online is highly unlikely.
To pursue a PhD in a related area, you should search for programs in:
* Industrial Engineering: Many industrial engineering PhD programs have significant components related to production systems.
* Manufacturing Engineering: This field directly addresses production system optimization and design.
* Operations Research: This field uses mathematical and computational methods to optimize production systems.
* Supply Chain Management: While not directly "production systems," this area often overlaps significantly.
Look for universities with strong reputations in these fields and then carefully examine the curriculum of their PhD programs to see if it aligns with your interest in production systems. Remember to check if any components require on-campus presence.