Digital automatic control system of phase-lock motor drive

Actually, the research of phase-lock motor drives is carried out with use of methods of the nonlinear control systems theory. These methods are rather difficult for calculations. The authors make the assumption of use of digital control systems methods for the analysis of the electric drive in a certain area of shaft speed. Digital control systems methods allow to simplify calculations and to receive difficult control laws of the motor drive. The algorithm developed in the Matlab soft is applied to define lower bound of rpm range. The results were received allow to construct a mathematic model of digital phase-lock motor drive and carry out the analysis of dynamic characteristics. Computer parametrical optimization was made to find maximum speed in transient mode of digital phase-lock motor drive.