| 摘要 |
In a system for driving an electric pulse motor by changing the exciting phase in turn and stepping the rotor of the electric pulse motor, the present invention utilizes a control circuit which repeats the forward and reverse stepping signals in a ratio according to the step position, and stops or vibrates the rotor in a predetermined position between the step positions which are determined by the number of exiting phases and the number of teeth per each phase. According to the present invention, a number of steps per unit distance larger than the number of steps per unit distance which are determined by the number of exciting phases and the number of teeth per each phase can be obtained by suitably determining the sequence of input pulses of a logic circuit which determines the exciting phases. According to the exciting system of the present invention, the number of steps and the quantity of steps are not restricted by the number of phases nor by the driving system. In the driving system, by further detecting the position of the displacement of the mechanical system driven by the pulse motor and providing an error detector circuit which operates on the pulse motor via the above-mentioned control circuit so as to bring detected value into coincidence with the command value, a more precise numerical control system can be provided. |
