Optimization of project networks with goal programming and fuzzy linear programming
Proceedings of the 12th annual conference on Computers and industrial engineering
Fuzzy programming approach to multicriteria decision making transportation problem
Fuzzy Sets and Systems
Fuzzy multiple objective programming and compromise programming with Pareto optimum
Fuzzy Sets and Systems
Multi-objective inventory models of deteriorating items with some constraints in a fuzzy environment
Computers and Operations Research
Multi-item fuzzy EOQ models using genetic algorithm
Computers and Industrial Engineering
The Korean Journal of Computational & Applied Mathematics
Stochastic optimal control and algorithm of the trajectory of horizontal wells
Journal of Computational and Applied Mathematics
Impulsive optimal control model for the trajectory of horizontal wells
Journal of Computational and Applied Mathematics
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In this paper, multi-objective models for designing 3D trajectory of horizontal wells are developed in a fuzzy environment. Here, the objectives of minimizing the length of the trajectory and the error of entry target point are fuzzy in nature. Some parameters, such as initial value, end value, lower bound and upper bound of the curvature radius, tool-face angle and the arc length of each curve section, are also assumed to be vague and imprecise. The impreciseness in the above objectives have been expressed by fuzzy linear membership functions and that in the above parameters by triangular fuzzy numbers. Models have been solved by the fuzzy non-linear programming method based on Zimmermann [1] and Lee and Li [2]. Models are applied to practical design of the horizontal wells. Numerical results illustrate the accuracy and efficiency of the fuzzy models.