feasible direction
1.Lastly, the paper presents derivatives of the unsteady aerodynamic load with respect to design variables and investigates the optimum design subjected to flutter constraint by means of a feasible-direction method.
3.The linear discrete-time large scale systems (LSS) is discussed here. An approach is proposed for the design of decentralized optimum controllers of systems, in other words, the feedback gain matrix K is restricted to be block diagonal, and the parameters of K is selected to get the disperse controller of sub- system by means of the gradient technique and the feasible direction method.
6.Calculating the translation of beacon based on discrete Fourier transform(DFT) and maximum likelihood criterion,need solve two nonlinear equations,and the linearly approximated result shows that the total translation error is below 0.5 pixel,the translation error in X direction is 3.3%,and the translation error in Y the direction is 2.7%,can meet the need of deep space optical communication,so it is a feasible scheme.
