| 摘要 |
PURPOSE:To reduce shocks at the time of changeover, rotation and stoppage, to adjust the angle of rotation easily and to improve facility by unifying a setter, a forward rotation circuit and a reverse rotation circuit with a stepping motor. CONSTITUTION:Voltage having forward and reverse polarity corresponding to the forward and reverse changeover directions applied between input terminals T1, T2 is connected to the stator coils of a stepping motor 10, and connected to each circuit element (not shown in the figure) integrated with the motor 10. The four-phase driving-pulse output terminals phi1-phi4 of a stepping- motor driver 32 are bonded with the stator coils of the stepping motor 10. The driver 32 forward rotates or reversely rotates the motor 10 only by an angle Ntheta equal to the product of the number (N) of pulses fed to forward- rotation input terminal CW or a reverse-rotation input terminal CCW and the stepping angle(theta) of the stepping motor 10. Rotational speed can be changed easily by fluctuating the output frequency of a clock generator 30 by operating a half fixed resistor 30a. |
