A multiple axis servo control implements a multi-tasking PWM control unit
to provide PWM signals for multiple axes in a single unit. A time slice
mechanism provides axis selection signals based on a system clock signal
to permit control parameters of the selected axis to be processed to
control the selected motor drive axis. The single unit PWM control
mechanism eliminates complex and costly multiple axis networks typically
associated with independent servo motor controls for each axis in a
multi-axis system. A single PWM unit implementation also permits the
reduction of components for closed loop current control and closed loop
velocity control in the multi-axis servo control system.