Robust gain scheduled control of a space launcher by introducing LQG/LTR ideas in the NCF robust stabilisation problem

A space launcher is a time-varying plant which is known to be hard to control, due to time and frequency-domain constraints and parameters uncertainties. In this paper, this problem is solved by interpolating LTI controllers designed for different instants of the flight. Such controllers are obtained by combining the NCF robust control problem with the LQG/LTR approach, the later being useful to design the compensators included in the first one.