in a control apparatus for a pulse motor , both a smooth acceleration property and a stable constant speed operation characteristic are realized in a process wherein the motor starts to run and then is accelerated to enter a constant speed operating state . a target value for the rotor phase , and motor speeds at n different phase switching times during an acceleration period of the pulse motor are determined in advance . then , phase control values and speed control values are integrated with each other in accordance with a predetermined weighting function , and then executed . in an early stage of acceleration , the weight of the phase control predominates . as the motor speed increases , the speed control is weighted more and more heavily relative to the phase control . when the motor speed reaches the target speed for constant speed operation in a final stage of acceleration , only the phase control is once more conducted exclusively and only once , so that the rotor phase at a phase switching time is merged into the target phase switching phase , thereby achieving constant speed operation .