Global Journal of Technology and Optimization

Clay J Humphreys

Publications

• Research Article
  A Hybrid Optimization Technique Applied to the Intermediate-Target Optimal Control Problem
  Author(s): Clay J Humphreys, Richard G Cobb, David R Jacques and Jonah A ReegerClay J Humphreys, Richard G Cobb, David R Jacques and Jonah A Reeger
  
  The DoD has introduced the concept of Manned-Unmanned Teaming, a subset of which is the loyal wingman. Optimal control techniques have been proposed as a method for rapidly solving the intermediate-target (mid-point constraint) optimal control problem. Initial results using direct orthogonal collocation and a gradient-based method for solving the resulting nonlinear program reveals a tendency to converge to or to get `stuck’ in locally optimal solutions. The literature suggested a hybrid technique in which a particle swarm optimization is used to quickly find a neighborhood of a more globally minimal solution, at which point the algorithm switches to a gradient-based nonlinear programming solver to converge on the globally optimal solution. The work herein applies the hybrid optimization technique to rapidly solve the loyal wingman optimal control problem. After establishing the.. Read More»
  

  Abstract PDF