Cost effectiveness model and optimization of weapon system based on cost as an independent variable

Cost effectiveness analysis is to select the best alternative based on the value of effectiveness, which can be obtained by the life cycle cost. Inspired by the thought of cost as an independent variable (CAIV), this paper attempts to turn the evaluation and decision problem into a programming problem. We estabilish the system effectiveness model with the logarithm method and the cost model with the logistic curve. Then according to the cost effectiveness decision-making criteria, we estabilish cost effectiveness model of the weapon system, which can be approximated by a continuous piecewise linear (CPWL) surrogate model. To solve the obtained problem, we utilize CPWL programming methods. The feasibility of model and optimization is validated by an example of cost effectiveness model of armed helicopter.