“…Although the simplicity of the controllers' design (PID), the effect of proposed technique and designing the controllers by GA is shown in terms of tracking errors and stability, even with the big angles, subsequently, high velocities response and high dynamic performances, this is in contrast to works that used the PID with linearized model [12], [14], [15], [16], the variation of the angles is limited between -10° and 10° which is the linear range, so, limit the dynamics by low performance. Moreover, compared of [34], which is a similar work, when the GA was used to tune the PID's parameters, but in the evaluation's phase, they didn't use a high dynamic trajectory and the angles never exceeded the linear range. Even some works, where a nonlinear control is designed in, the used trajectory to evaluate the controller doesn't contain high dynamics with big range of angles; [1], [6], [7], and [35].…”