| 摘要 |
PURPOSE:To decrease the variation of torque by connecting a resistor in series with a common terminal of the pulse motor and controlling phase currents. CONSTITUTION:The coils 23-26 of the pulse motor each correspond to respective phase phi1-phi4 of the pulse motor. The series circuits of the resistors 28, 29 and transistors 30, 31 are connected to the common terminals of several two coils 23, 24 and coils 25, 26. When excitation signals are inputted to signal input terminals 12-20 and the terminals are driven only by a half step, the pulse motor is turned by predetermined torque. |
