| 摘要 |
PURPOSE:To exactly perform synchronous driving, by stopping the driving of all pulse motors, when the difference of a driving degree between the pulse motors is more than a previously set allowable slippage. CONSTITUTION:The rotational quantity of each pulse motor (a) is always detected by each rotation detecting means (d), and the detection signal of each rotation detecting means (d) is transmitted to a first discriminating means (e). By the first discriminating means (e), the detection signals are compared with each other, and a difference between the signals is compared with a previously set allowable slippage, and when its difference due to the comparison exceeds the allowable slippage, then signal showing its phenomenon, as driving-stop signal, is transmitted to each pulse motor (a). Accordingly, the driving of all pulse motors (a)... is stopped, and so the difference of a driving degree between the respective pulse motors (a) is not to be more than a specified allowable slippage. |
