Variation of CONWIP Systems

The paper describes the workings for four models of CONWIP systems used till date; the basic CONWIP system, the hybrid CONWIP system, the multi-product CONWIP system, and the parallel CONWIP system. The final novel model is introduced in this paper in a general form. These models may be adopted for analysis for both simulation studies and implementation on the shop floor. For each model, input parameters of interest are highlighted and their impacts on several system performance measures are addressed.




References:
[1] M. L. Spearman, D. L. Woodruff, and W. J. Hopp. "CONWIP: a pull
alternative to kanban," Int. J. Prod. Res., vol. 28, pp. 879-894, 1990.
[2] E. A. Silver, D. F. Pyke, and R. Peterson, "Inventory management and
production planning and scheduling," 3rd ed., New York: John Wiley &
Sons, 1998.
[3] M. C. Bonney, Z. Zhang, M. A. Head, C. C. Tien, and R. J. Barson, "Are
push and pull systems really so different?" Int. J. Prod. Econ., vol. 59,
pp. 53-64, 1999.
[4] E. G. A. Gaury, H. Pierreval, and J. P. C. Kleijnen, "An evolutionary
approach to select a pull system among kanban, CONWIP and hybrid,"
J. Intell. Manuf., vol. 11, pp. 157-167, 2000.
[5] J. Slomp, J. A. C. Bokhorst, and R. Germs, "A lean production control
system for high-variety/low-volume environments: a case study
implementation," Prod. Plan. Contr., vol. 20, ed. 7, pp. 586-595, 2009.
[6] H. Ayhan, and M. A. Wortman, "An approximation for computing the
throughput of closed assembly-type queueing networks," Eur. J. Oper.
Res., vol. 112, pp. 107-121, 1999.
[7] B. Golany, E. M. Dar-El, and N. Zeev, "Controlling shop floor
operations in a multi-family, multi-cell manufacturing environment
through constant work-in-process," IIE Trans., vol. 31, pp. 771-781,
1999.
[8] P. B. Luh, X. Zhou, and R. N. Tomastik, "An effective method to reduce
inventory in job shops," IEEE Trans. Robot Autom., vol. 16, pp. 420-
424, 2000.
[9] K. Takahashi, Myreshka, and D. Hirotani, "Comparing CONWIP
synchronized CONWIP, and kanban in complex supply chains," Int. J.
Prod. Econ., vol. 93-94, pp. 25-40, 2005.
[10] D. Cao, and M. Chen, "A mixed integer programming model for a two
line CONWIP-based production and assembly system," Int. J. Prod.
Econ., vol. 95, pp. 317-326, 2005.
[11] N. Cheikhrouhou, C. Hachen, R. Glardon, "A Markovian model for the
hybrid manufacturing planning and control method ÔÇÿDouble Speed
Single Production Line-," Comput. Ind. Eng., vol. 57, pp. 1022-1032,
2009.
[12] J. Geraghty, and C. Heavey, "A comparison of hybrid push/pull and
CONWIP/pull production inventory control policies," Int. J. Prod.
Econ., vol. 91, pp. 75-90, 2004.
[13] C. C. Huang, and A. Kusiak, "Manufacturing control with a push-pull
approach," Int. J. Prod. Res., vol. 36, ed. 1, pp. 251- 275, 1998.
[14] J. A. Buzacott, and G. J. Shanthikumar, "Stochastic models of
manufacturing systems," Englewood Cliffs, NJ: Prentice Hall, 1993.
[15] J. M. Framinan, R. Ruiz-Usano, and R. Leisten, "Input control and
dispatching rules in a dynamic CONWIP flow-shop," Int. J. Prod. Res.,
vol. 38, pp. 4589-4598, 2000.
[16] S. M. Ryan, B. Baynat, and F. F. Choobineh, "Determining inventory
levels in a CONWIP controlled job shop," IIIE Trans., vol. 32, pp. 105-
114, 2000.
[17] A. Smalley, "Creating level pull," Cambridge, MA: Lean Enterprise
Institute, 2009.
[18] M. Y. Chong, S. A. Mustafa, J. Prakash and J. F. Chin, "Parallel kanban-
CONWIP for a high-mix multi-stage production system with entrance of
rework," submitted for publication to Int J Prod Res.
[19] J. Prakash, M. Y. Chong, S. A. Mustafa and J. F. Chin, "Parallel
CONWIP for a high-mix multi-stage production system with entrance of
rework," to be published by J. Prod. Res. Manag.
[20] G. N. Krieg, "Kanban-controlled manufacturing systems," New York:
Springer-Verlag Berlin Heidelberg, 2005.