| 摘要 |
PURPOSE:To easily attain the positioning control with high accuracy by adding the output of a position controller which defines the position deviation equal to the position error component against the speed setting action done precedingly by a cycle as a reference amount to the speed command value as a correction amount. CONSTITUTION:A positioning device for a band-shaped member 10 which is carried in the fixed direction by a bridle controller 12 contains side guides 14 and 16 for control of position against the width of the member 10 and a width detector 18. The position of both guides 14 and 16 are controlled by a motor 20 which is driven by a variable speed controller 18. At the same time, the width detector 18 detects the control width (target position). Then the deviation between the target position signal and the actual position value given from a digital integrator 28 is obtained by an adder 30. Then the speed command value is obtained by a speed arithmetic unit 32 with said deviation of the adder 30 defined as a reference amount. While the speed correcting signal is obtained from the target position signal, etc., obtained after a fixed cycle by a position controller 38. These speed command value and speed correcting signal are added together by an adder 40 and supplied to the controller 18 for positioning control of widths of both guides 14 and 16.
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