Abstract
Many sampled-data controllers based on various principles have been developed and reported during the last ten years. Most of them belong to the analogue type. From the economical viewpoint, they are more advantageous in smaller-scale control systems than those of digital type. While, in large-scale systems having many control systems, the merits of the analogue type controller would be lost, because many analogue-memory units will be requied.
On the other hand, some digital controllers that have been reported belong to the stored program system. But, for the function of a general purpose computer, the computation and its control sequence in the usual sampled-data control are too simple and repetitious, and its routine is fixed. In this paper, a simple sequential digital type controller is presented and the trial production made in our laboratory is reported. The magnetostrictive delay line, the binary rate multiplier, the revercible counter and the sequential operation control unit are treated as the important factors. In addition several methods of linking the above controller with a superviser computer are considered, as well as several methods of using it as a controller of multi-point control systems.
