Abstract The brushless DC motor is driven by a square wave. Compared with the sinusoidal synchronous motor, control simple. airborne radar servo system described in this paper uses drive, PWM control, and angular position. speed detection feedback loop composed of resolver for digital converters. adopts current, speed, position closed-loop design. design simulation carried out using MATLAB/Simu...

The area of control system engineering that mainly deals in obtaining the robustness of system in the existence of uncertainties is known as robust control. In this paper, a graphical design method is developed for obtaining the entire range of PID controller gains that stabilize a D.C. servo plant robustly with the existence of time delays and additive uncertainty employed. This method of desi...

For reducing the steady state speed ripple, especially in high performance speed servo system applications, the steady state precision is more and more important for real servo systems. This paper investigates the steady state speed ripple periodic disturbance problem for a permanent magnet synchronous motor (PMSM) servo system; a fuzzy adaptive repetitive controller is designed in the speed lo...