1. A Manufacturing System
Internal Disturbances
External Disturbances
Raw Materials
Socio-Political
Environment
Information
Demand
Energy
Suppliers
OPERATIONS O U T P S I N P U T S
Products
Service
Information
Profit
Physical Objects Measurable Parameters
Machine Tools Production Rate
Tools Cycle Times
Matl. Handling Equipment Defects per Million
People Unit Cost
Customer

2. What is a Manufacturing System?
“A ROI-oriented, highly interactive network of processes through which materials and information flow.”
Adapted from
Hopp and Spearman
Factory Physics

3. What is a Manufacturing System?
The arrangement and operation of machines, tools, people, suppliers, material and information to produce a value- added product, whose success and cost are characterized by measurable parameters.

4. Why are Mfg Systems so hard to manage?
Interactions
Time lags
Non-linearities
People
Conflicting goals
Short-term vs Long-term benefits
Effect of uncontrollable external forces
Must interface with
design & suppliers
CLASSIC SYSTEMS BEHAVIOR !
A COMPLEX, TIGHTLY COUPLED NETWORK