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Production control
systems can be classified as pull and push systems (Spearman et al. 1990
[1]). In a push system, the production order is scheduled, froma demand forecast, and the material is pushed into the
production line. In a pull system no part is allowed to enter the start of each product assembly process without demand from the process that consumes its outputs. Thus production is triggered by pull from the end of production line.
There currently exist three basic topologies for pull production control system, namely
KANBAN,
CONWIP (Constant Work In Process) or single cell KANBAN, and Base Stock
[2] but these have not taken into account the circular nature of systems (Vildosola 2002
[3]).
Circular - VARiable Work in Process (C-VARWIP) is the synthesis to both Push (first generation) and Pull (second generation) production control systems when the system is taken as unitary, when whole-system analysis is performed.
Of primary relevance to systems engineering is the problem of telos or purpose, C-VARWIP gives purpose to observed behavior in push production control systems as well as pull production control systems.
See also
References
1.
^ Spearman, M., Woodruff, D. and Hopp, W. (1990) CONWIP: a pull alternative to kanban. International Journal of Production Research 28, 879-894
2.
^ Eric G.A. Gaury,Jack P.C. Kleijnen,Henri Pierreval. Customized Pull Systems for Single-Product Flow Lines, (
Downloadable from website)
3.
^ Vildosola, L., (2002) C-VARWIP: circular-variable work in process. Research Papers in Economics (
Downloadable from website )
System may refer to:
- System a set of entities, real or abstract, comprising a whole.
- In biology, a biological system is a group of organs, and an ecosystem is an entity comprised of a large number of organisms and their environment.
..... Click the link for more information. production line is a set of sequential operations established in a factory whereby materials are put through a refining process to produce an end-product that is suitable for onward consumption; or components are assembled to make a finished article.
..... Click the link for more information.
Kanban (in kanji 看板 also in katakana カンバン, where "kan 看 カン" means visual, and "ban 板 バン" means card or board) is a concept related to Lean or Just In Time (JIT) production,
..... Click the link for more information.
CONstant Work in Process (CONWIP) system (Spearman et al. 1990) which is known for its ease of implementation.
CONWIP is a kind of single-stage kanban system and is also a hybrid push-pull system.
..... Click the link for more information.
CONstant Work in Process (CONWIP) system (Spearman et al. 1990) which is known for its ease of implementation.
CONWIP is a kind of single-stage kanban system and is also a hybrid push-pull system.
..... Click the link for more information.
JIT may refer to:
- Various meanings of Just In Time:
- Just-in-time compilation - a technique for improving the performance of Virtual Machines in computing.
..... Click the link for more information. Kanban (in kanji 看板 also in katakana カンバン, where "kan 看 カン" means visual, and "ban 板 バン" means card or board) is a concept related to Lean or Just In Time (JIT) production,
..... Click the link for more information.
The initialism
MRP or
M.R.P. can stand for many things:
- Material requirements planning or Material resource planning and Manufacturing resource planning (MRP II)
- Maximum retail price
- Manufacturer's recommended price
- Machine-readable passport
..... Click the link for more information.