(c) the speed tracking controller proposed in the paper in terms of optimal

linear control theory for linearized system has a better performance in contrast with conventional PI control algorithm, and the simulation results in three different cases prove the validity and feasibility of the designed method.

To illustrate this result, the closed-loop behaviour of the nonlinear control system with LQ control is compared to the closed-loop behaviour of the nominal

linear control system with LQ control.

Table III: Comparative Simulation results of

linear control and proposed fuzzy control converters.

The device demonstrates a

linear control input slope with output voltage and is packaged to form, fit and function as an industry-recognized standard.

[15] have shown that based on flatness control is robust and provides improved performance monitoring transience compared to a traditional method of

linear control (PI).

When nonlinear control is used, it possible to enlarge the working interval even in the case the

linear control does not guarantee the sufficient quality of control.

Also, the CPM modulator must be capable of providing full 360 [degrees]

linear control of the carrier signal phase.