Abstract: A root-locus method for the analysis of nonlinear servomechanisms is developed, using the complex convolution theorem of the Laplace transformation. The nonlinear servomechanisms that can be ...

Based on Quansar’s two-degree-of-freedom helicopter, which has two DC motor propellers for controlling pitch angle θ and yaw angle ψ. Discrete-time controllers are designed for each of these two ...