04_Assembly Line Blancing

Introduction in Assembly line Balancing

What is a Assembly Line balancing (Introduction) and name the advantages.

What are the objektives in an Assembly Line Balancing Problem (Introduction)?

What are the classifications of ALB problems?

What types of Line controls exist in ASB? (Introduction)

What types of processing times exist in ALB?

Give the six Line Layouts from the lecture? In which one quality controll can start at the beginning and the end?

Neues Model: Single Model Assembly Line

Welche SALB (Single Assembly Line Balancing) types exists and which ones ar NP-Hard and NP-complete? Which type aif Layout does SALB have?

What are the Assumptions of Single Model Assembly Lines bzw. Simple assembly line balancing (SALB)

What are the variables in single model Assembly Lines (SALB)?

Give the formulas für Earliest station and latest station. What are they for ? Compute this for two from the give graph.

Neus Model: Feasibility Problem (SALB-F)

Was we want to find in a in (SALB-F) and what does it not have?

What is the decision variable and the decision formulation of SALB-F. Give the constraints for. Which constraints has to be done for ?

• Occurence constraints

• Cycle time constraints

• Precendence constraint

Compute with the following table the feasibility problem for task 6, station 3 and the precendence 2 —> 5

Neues Model:: Optimization Problems: SALB-1, SALB-2, SALB-E (Single Model Assembly Lines)

Give the Objective and the application for:

• Salb-1

• Salb-2

• Salb-3

And now give the mathematical formulation vor:

• Salb-1

• Salb-2

• Salb-3

Neues Model: Ranked Positional Weight heuristic

Explain the ranked positional weight heuristic and name the heuristic which is quite similiar to this one. Do the example for that problem:

Neues Model: U-Shaped Assembly Lines (Single Model Assembly Lines-Salb-1). Unterscheide zwischen UALB vs SALB.

Neus Model: Mixed Model Assembly Lines

Which type of products are produced on mixed assembly lines and what tpe of problems Exists in mixed model assembly lines?

NEUES Model: Line Balancing (Mixed Model Assembly Lines)

What are the additional assumptions to SALB? (Line Balancing, Mixed Model Assembly Lines)

Give the variables of Line Balancing (Mixed Model Assembly Lines) and give the variables in tasks perspective and stations perspectives?

Give the time of each station from the Joint Model

How the different Models (in Line Balancing ist hier nicht mathematisches Model gemeint, sondern wirklich die unterschieldlichen Modelle/Produkte) can be combined?

Give for that example the explanation how t (tau), is computed? How the models are connected

Is the Cycle time exceeded?

Gib the Obectives of

• MALB-F

• MALB-1

• MALB-2

• MALB-E

(its same like SALB)

Which ones are NP-Hard or NP-Complete?

When inefficiencies occur ? And what types are there and how? (Schritt: Wann treten inefficiencies auf und wie decken wir die Inefficiency auf bzw. wie zeigen wir sie? How we gonna handle variations of station utilization?

How we gonna handle when inefficiencies occur (wie gehen wir jetzt gegen die violation vor)

Give the 3 objectives for Smoothed station loads. Give also the advantages and disadvanteges of objective 1-3

NEUES Model: Line sequencing/ MSP (Mixed Assembly Lines).

Give the characteristics and the Assumptions of MSP (Line sequencing (Mixed Model Assembly Lines). What are the Objectices and which one is the most important objective

give the formulation of the problem

Give the connection between the planning horizons