PECULIARITIES OF Gcost

• Closed form expression not available

• Severely constrained objective function

• Extremely difficult to specify feasible starting point

• Penalty Function approach

  • Objective Function = Gcost + Penalty
  • Penalty = ivk iactk wk constrk
    • k = number of constraints
    • constrk = numerical value of kth constraint
    • ivk = 1 if constrk > tolk , = 0 otherwise
    • tolk = tolerance on target value for kth constraint
    • iactk = 1 if kth constraint is active, = 0 otherwise
    • wk = weight on the value of kth constraint

Previous slide

Next slide

Back to first slide

View graphic version