| 摘要 |
PURPOSE:To simplify a pulse processor for obtaining an angle difference by setting the number of pulses of an encoder which is mounted on the output shaft of a reduction gear to N times (where 1/N represents the reduction gear ratio of a reduction gear) of the number of the pulses of an encoder mounted on the rotational shaft of a motor. CONSTITUTION:The output of a motor 1 is transmitted through a reduction gear 2 to a mechanical element 3. Encoders E1, E2 are respectively mounted on the rotational shaft of the motor 1 and the output shaft of the gear 2. The number of pulses of the encoder E2 is set to N times (where 1/N represents the reduction gear ratio of the gear 2) of the number of the pulses of the encoder E1. Thus, the twist of the gear 2 becomes proportional to the difference of the rotary pulse of the motor and the rotary pulse of the gear. Accordingly, the outputs of the encoders E1, E2 are discriminated for normal and reverse, counted by counters 5, 7, the counted value of the counter 5 is subtracted by the counted value of the counter 7 by a calculator 8, and the twisting angle signal is output. |
