| 摘要 |
PURPOSE:To obtain a controller for controlling a mechanical position, which scarcely causes overshoot or vibration, and is capable of shortening an arrival time, by resetting an integral operating circuit when an output of a proportional operating circuit reaches zero, in a controlling operation process. CONSTITUTION:When a set value A is varied like a pulse at time t=0, a deviation against an actual value C is impressed to a proportional operating circuit 21 of a control fundamental part 20. The proportional operating circuit 21 applies a signal E being proportional to said deviation to a comparator 24 and an integral operating circuit 22. The signal E is added to an output signal D of an integral operating circuit for integrating the signal E, at an adding point 23 and becomes a control output. The comparators 24, 25 output ''1'' and ''0'' when outputs of the operating circuits 21, 22 are positive and negative, respectively. Therefore, as for an EXOR gate 26, when the signal E is shifted to negative from positive at time t=ta, namely, at the time of A=C, its output is inverted to ''1'' from ''0''. As a result, a pulse generating circuit 27 resets the integral operating circuit 22, and sets a control output to zero. |
