Adaptive pulse-pump controller for X-Y mode frequency-locked stepping servomechanism

A microprocessor-based adaptive pulse-pump controller (mu P-APPC) for X-Y mode frequency-locked stepping position servo control system (XY-FLSPS) is proposed. A control strategy in mu P-APPC for fasting the system locking process is developed. A discrete frequency set is built to represent the servo position so as to raise the accuracy of position lock and reduce the conversion error in the signal processing, The mu P-APPC can respectively provide proper X's and Y's motion profiles for guiding their movements according to the detected position errors, An X-Y pulse rate identifier (XY-RI) is built to prescribe the instant X-axis and Y-axis motion speeds so that both X and Y motors can reach the target at approximately the same time, System modeling for analysis and computer simulation is constructed, A prototype of the XY-FLSPS with mu P-APPC controller is developed for assessing system performance, and the X-Y position and speed responses are described by three-dimensional display.