Thrust Vector Controller Comparison for a Finless Rocket

The paper focuses on comparing applicability, tuning, and performance of different controllers implemented tested a finless rocket during its boost phase. objective was to evaluate the advantages disadvantages each controller, such that most appropriate one would then be developed in real-time rocket. compared were Linear Quadratic Regulator (LQR), Gaussian (LQG), Proportional Integral Derivative (PID). To control attitude rocket, emphasis is given Thrust Vector Control (TVC) component (sub-system) through gimballing engine. launcher commanded input thrust gimbal angle δ, while output parameter expressed terms pitch θ. After deriving linearized state–space model, stability addressed before controller implementation testing. comparative study showed both LQR LQG track changes rapidly, thus providing efficient closed-loop dynamic tracking. Tuning Q R weighting matrices, illustrates how variations directly affect system by varying values feedback gain (K). provides more realistic profile because, general, not all variables are measurable available for feedback. However, disturbances affecting better handled reduced with PID overcoming steady-state errors due aerodynamic model uncertainty. Overall evaluated overshoot, settling rise time, error.