| switching system with closed action path containing at least one binary storage element so that beginning from a start command a constant manipulated variable acts on the controlled system in order to reduce the absolute value of the difference (w−x) until the value of the controlled variable x reaches the value of the reference variable w for the first time SEE: Figure 12. Note 1 to entry: A reset circuit has an open action in spite of the fact that the structure has a closed action path. (see Figure 12). Note 2 to entry: This entry was numbered 351-26-56 in IEC 60050-351:2006.
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