Nonlinear control optimization of digital PID controller of load－sensing pumps;

In this article,we introduce the idea of using Lie series to give an approximation of the optimal tra- jectory of a nonlinear optimal control problem by a discrete process.

First, the nonlinear optimal control algorithm was applied to plan the reference trajectories of automatic lane changes.

Aero-engine performance seeking control(PSC) is one of the most important aspects of integrated flight/propulsion control.

Minimal Specific Fuel Consumption control pattern is been researched in the Engine Performance seeking control under cruise state.

The limit cutting depth of the machining system with optimal controlling spindle speed is studied by experiments.

The research state of the on line optimal control on spindle speed is discussed.

This paper presents a new method to suppress cutting chatter by on line optimal control on machine tool spindle speed with the use of phase shift angle ψ as an optimal parameter.

By considering the evaluation results,the nonlinear optimal excitation control or PID+PSS excitation control is chosen,namely,when the stability situation of power system is changed,the excitation control tactics which is suitable for the present power system will be chosen.