Zusammenfassung der Ressource
Aggregate planning today
- Aggregate planning
- A firm plan its
manufacturing
activities
- Vatiety of levels
- Operate it
as a system
- Covers a
time
between 3 to
18 months
- Goal
- Achieve a
production
plan
- Effectively utlize
resources to satisfy
expected demand
- Good
resource
input mix
- Influence
- Demand
- Marketing
and
operations
- Supply
- Price,
advertising
and
product
mix
- Lack of acceptance
- Complex models
- Aggregate
planning in
perspective
- Characteristics
- Time
horizon=12
months
- Level
product
demand=one
or a few
categories
- Demand=fluctuating,seasonal
or uncertain
- Change
supply/demand
- Low inventories,
good labour
relations, low cost,
flexibility & good
customer service
- Fixed cannot
be expanded
- Facilities
- Planning
- Physical capacity
- Deals with
acquisition of
resources
- Scheduling
- Short range
- Deals with
allocating
available
resources
- Decision options
- Those modifying
- Demand
- Supply
- Basic strategies
- Maintain
- Level of
workforce
- Steady
output rate
- Match
demand
- Combination
of decision
variables
- 2 factors
- Policy
- Cost
- Models
- Try to
minimize:
Total relevant
cost
- Minimize the
deviations from
prioritized goals
- Techniques
- Informal
- Mathematical
- Linear
programming &
extentions
- Linear decision rule
- Heurestic and
simulation
- Management
coefficients approach
- Simulation search
procedures
- New developments
- Simulation model
- Communications
can be established
among production
- Levels for
inventory,
service and
production can
be set.
- Heurestic method
- RPCC
- Represents
the relative
value of the
cost of
changing the
production
level to the
one of carrying
inventory
- Indicators
- Current period ratio
- Planning horizon ratio
- Production switching rule
- Accomodate discrete
production environments
which rely on crew loading
- Allows incorporation of
overtime options & is
interactive in options
- Hierarchical
production planning
- Reduce complexity
- 4 modules
- Forecasting
- APP
- Disaggregate PP
- Sequencing