Control circuit regulating unit

摘要

The control circuit has a "fuzzy" regulator and a level setter that makes variable pulse width modulation possible. The level setter has a "range-split" unit (6) which decides, in each case according to the sign and value of the output value YR whether the output regulator (2) for heating or cooling should be controlled. The regulating unit, depending on the output value, produces a manipulated variable y, and the value range of this output value is divided into at least two regions Wi, each with a pulse Pi of a certain length. The unit gives a pulse Pi = k when the output value YR lies in the value region Wi = k, in a time interval Pmax and for a threshold value ai.